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MERCHANT SHIPPING (REGISTRATION) (TONNAGE) REGULATIONS - SCHEDULE 5
TONNAGE REGULATIONS APPLICABLE TO SHIPS REFERRED TO IN PARTS III, IV, V AND VI
Caution: This is a past version. See the current version here.
[regulations 12, 13, 16, 17 & 18]
Definitions
In addition to the definitions prescribed in regulation 2, in this Schedule
and Appendices 1 to 5 inclusive, unless the context otherwise requires- "crew
accommodation" (船員艙房) includes sleeping rooms, mess rooms, sanitary
accommodation, hospital accommodation, recreation accommodation, store rooms
and catering accommodation provided for the use of the crew but does not
include any accommodation which is also used by or provided for the use of
passengers; (74 of 1990 Sch. 5) "dry cargo space" (乾貨艙) means space
appropriated for the carriage of cargo other than liquid or gaseous matter in
bulk; "overall length" (整體長度) in relation to a pleasure vessel to
which Part IV of this Schedule applies means the distance between the foreside
of the foremost fixed permanent structure and the aftside of the aftermost
fixed permanent structure of the vessel; "propelling machinery space"
(推進機械艙) means space below the upper deck appropriated for the main
or auxiliary propelling machinery of a ship, and includes-
(a) ventilation, light or escape trunks serving any such space;
(b) space appropriated for boilers serving such machinery;
(c) shaft tunnels;
(d) engineers' storerooms and workshops not exceeding in total tonnage 3/4
of 1 per cent of the gross tonnage of the ship;
(e) oil fuel settling tanks serving the main or auxiliary propelling
machinery, having a total capacity sufficient to provide not less than
24 or more than 96 hours steaming for the ship at maximum speed, and
shall also include framed-in spaces on or above the upper deck
described in paragraph 4(1)(e) and included in the gross tonnage of
the ship in accordance with that provision; "second deck"
(第二層甲板) means the deck next below the upper deck, being a
deck-
(a) which is fitted as an integral part of the ship's structure;
(b) which is continuous at least between peak bulkheads both fore and aft
and transversely; and
(c) in which all hatchways are fitted with substantial and durable covers,
a deck being taken to be continuous for this purpose notwithstanding
the presence in it of-
(i) openings serving propelling machinery space or leading to
ladder-ways or stairways;
(ii) hatch or ventilation trunks, provided that they do not extend
fore and aft from one main transverse bulkhead to another;
(iii) chain locker or cofferdams; or
(iv) a break or breaks the aggregate height of which above the line
of continuation of the deck does not exceed 4 feet; "surveyor"
(驗船師) (except in proviso (i) to paragraph 10 of this
Schedule) means a surveyor appointed by a Certifying Authority;
"tonnage deck" (量噸甲板) means the second deck except in
the case of single deck ships, in which case it means the
upper deck; "upper deck" (上甲板) means the uppermost
complete deck exposed to sea and weather fitted as an integral
part of the ship's structure, being a deck all openings in the
weather portions of which are fitted with permanent means of
closing and below which all openings in the sides of the ship
are fitted with permanent means of watertight closing, but
shall in the case of an open ship be taken to be the upper edge
of the upper strake of the gunwale.
PART I
1. Ascertainment of tonnage
The tonnage of any ship to which Parts III and IV of these regulations and
this Schedule applies and which is to be registered in Hong Kong shall be
ascertained in accordance with this Schedule: Provided that in the case of
novel types of craft with constructional features which render the application
of the provisions of this Schedule unreasonable or impracticable, the tonnage
shall be determined as required by the Director.
(74 of 1990 Sch. 5)
2. Method of measurement
(1) The owner and the master of a ship to be measured shall upon payment of
the appropriate fee make it available for measurement by a surveyor and afford
all necessary facilities for its inspection and measurement and shall produce
for the surveyor's use and retention if required such plans, drawings,
specifications and other documents relating to the ship as he may require.
(2) Subject to sub-paragraph (3) of this paragraph, the tonnage of a ship
shall be measured in the manner specified in Rule I of Appendix 1 and in
Appendix 2 to this Schedule.
(3) In any case in which the surveyor is satisfied that by reason of the
ship's being laden or otherwise measurement of the tonnage of the ship below
the upper deck in accordance with sub-paragraph (2) of this paragraph is not
reasonably practicable, such tonnage shall be measured in the manner specified
in Rule II of Appendix 1 and in the case of a ship so measured the provisions
of paragraphs 12 and 13 shall not apply.
(4) The Certifying Authority may on the application of the owner of any ship
the tonnage of which below the upper deck has been measured in accordance with
sub-paragraph (3) direct such tonnage to be measured in accordance with
sub-paragraph (2) and furnish the particulars of such measurement to the
Registrar who shall alter the particulars relating to the registered tonnage
of the ship accordingly. (74 of 1990 Sch. 5)
(5) All measurements required by this Schedule shall be taken and expressed in
feet and fractions of a foot, and such fractions shall be expressed in
decimals.
(6) Tonnage in relation to any ship or space in a ship shall be measured in
terms of cubic capacity, 100 cubic feet representing one ton.
3. Certificates of Hong Kong tonnage
(1) The Certifying Authority shall issue to the owner of every ship registered
in Hong Kong, the tonnage of which has been ascertained in accordance with
this Schedule, a certificate of Hong Kong tonnage certifying the registered
tonnage of the ship and containing the following particulars-
(a) the name, port of registry and official number of the ship;
(b) its registered dimensions;
(c) its gross tonnage and the tonnage of each of the components thereof
specified in paragraph 4(1);
(d) its register tonnage and the deductions and allowances made pursuant
to paragraphs 10 and 11 respectively in ascertaining that tonnage;
(e) in the case of a ship to which gross and register tonnages have been
assigned in accordance with paragraph 12 or to which alternative
tonnages have been assigned in accordance with paragraph 13,
particulars of the spaces the tonnage of which has been excluded by
virtue of the provisions of paragraph 12 or paragraph 13, as the case
may be, in ascertaining such tonnages;
(f) the position in which any tonnage mark assigned to the ship is to be
placed.
(2) The gross and register tonnages as stated in that certificate shall,
unless any alteration is made in the form or capacity of the ship or it is
discovered that the tonnage of the ship has been erroneously computed, be
taken for that purpose to be the gross and register tonnages of the ship.
(3) On remeasurement of a ship any certificate of Hong Kong tonnage in force
in relation to that ship shall be delivered up to the Certifying Authority
and the Certifying Authority shall issue a new certificate in place thereof.
(74 of 1990 Sch. 5)
PART II
A. GROSS TONNAGE
4. Components of gross tonnage
(1) Subject to the provisions of Part III of this Schedule, the gross tonnage
of a ship shall be the sum of-
(a) the underdeck tonnage of the ship ascertained in accordance with the
provisions of paragraph 5 and paragraph 1 of Rule I of Appendix 1 to
this Schedule;
(b) the tonnage of between deck space between the second deck and the
upper deck ascertained in accordance with the provisions of paragraph
2 of the said Rule I;
(c) the tonnage of permanently closed-in spaces on or above the upper deck
including that of breaks situated above in line of the deck but
excluding-
(i) the tonnage of hatchways described in paragraph 6;
(ii) the tonnage of framed-in spaces on or above the upper deck
which contain any part of the propelling machinery or which
light or ventilate space appropriated for such machinery;
(iii) any space excluded by virtue of the provisions of paragraph 7,
ascertained in accordance with the provisions of paragraphs 3,
4 and 5 of the said Rule I;
(d) the tonnage of hatchways described in paragraph 6, ascertained in
accordance with the provisions of that paragraph and paragraph 5 of
the said Rule I;
(e) the tonnage of framed-in spaces on or above the upper deck which
contain any part of the propelling machinery or which light or
ventilate space appropriated for such machinery, ascertained in
accordance with the provisions of paragraph 5 of the said Rule I,
subject to the conditions that-
(i) the owner of the ship has made written application to the
Certifying Authority for the inclusion of such spaces in the
propelling machinery space of the ship;
(ii) the are permanently marked by a notice stating their purpose;
and
(iii) they are certified by a surveyor as safe and seaworthy and
properly constructed for their purpose, as reasonable in extent
for that purpose, and as being such that they cannot be used
for any other purpose.
(2) In the case of a ship the tonnage of which below the upper deck has been
measured in accordance with Rule II of Appendix 1, that tonnage shall be
included instead of the tonnages specified at (a) and (b) in sub-paragraph
(1).
(3) For the purpose of this Schedule and Appendices 1 to 5 the expression
"permanently closed-in spaces on or above the upper deck" (上甲板或以
上的永久封閉艙位) shall include-
(a) a poop, bridge or forecastle notwithstanding the presence of an
opening in the end transverse bulkhead thereof, unless the opening
extends from deck to deck for one half or more of the breadth of the
deck in way of the bulkhead;
(b) a deck house notwithstanding the presence of an opening in one of the
boundary bulkheads thereof exposed to the weather, unless the opening
extends from deck to deck for one half or more of the length of the
bulkhead in which it is situated and is 4 feet wide or more;
(c) a structure extending from side to side of the ship notwithstanding
the presence in it of an opening in the ship's side, unless the
opening extends for one half or more of the length of the space which
it serves and exceeds in height one third of the distance from deck to
deck in way of the opening or 2 feet 6 inches, whichever is the
greater;
(d) a passage way at the ship's side, unless it is 4 feet wide or more and
is completely open to the weather at one end, or both ends, of its
length;
(e) a recess, unless it extends from deck to deck for 3 feet or more of
its width and is exposed to the weather; and
(f) any space having an opening in the deck over being a deck exposed to
the weather, unless the area of the opening is one quarter or more of
the deck area over the space.
5. Underdeck tonnage
The underdeck tonnage of a ship shall be the sum of-
(a) the tonnage of the space below the tonnage deck bounded by-
(i) the tonnage deck;
(ii) the upper surface of the double bottom tanks, open floors or
ceiling as the case may be; and
(iii) the inner face of the timbers, frames or sparring as the case
may be, measured in accordance with the provisions of paragraph
1 of Rule I of Appendix 1 to this Schedule, but subject to such
limitations specified in Appendix 2 as may be applicable in the
circumstances of the case, and excluding the tonnage of breaks
above the line of the tonnage deck; and
(b) the tonnage of shaft bossings and any other appendages forming part of
the hull of the ship below the tonnage deck whether or not they
project beyond the extreme points of measurement of that deck.
6. Tonnage of hatchways
The tonnage of all hatchways leading to space included in the gross tonnage of
the ship other than internal hatchways totally enclosed within such space
shall be measured in accordance with paragraph 5 of Rule I of Appendix 1 to
this Schedule and from the aggregate thereof there shall be deducted 1/2 of 1
per cent of the ship's gross tonnage excluding such aggregate. The remainder
(if any) shall be the tonnage of hatchways, customarily referred to as "excess
of hatchways" (艙口超額噸位), to be included in the gross tonnage of the
ship.
7. Closed-in spaces on or above the upper deck not to be included in gross
tonnage
Permanently closed-in spaces of the following kinds situated on or above the
upper deck shall not be included in the gross tonnage of the ship-
(a) dry cargo space, unless situated in a break above the line of the
upper deck;
(b) space fitted with and appropriated for the use of machinery or
condensers;
(c) the wheelhouse and chartroom, and space fitted with and appropriated
for the use of radio and navigational aids;
(d) skylights, domes and trunks which light or ventilate the space they
serve;
(e) chain lockers, and space appropriated for working the anchor gear and
capstan;
(f) space appropriated for the storage of safety equipment or batteries;
(g) companions and access hatches serving as protection for stairways or
ladderways leading to space below, and openings over such stairways
and ladderways;
(h) the galley, and any separate bakery fitted with ovens, provided in
either case that no part thereof is appropriated for use for any other
purpose;
(i) washing and sanitary accommodation forming part of the crew
accommodation or appropriated for the use of the master;
(j) workshops and storerooms appropriated for the use of pumpmen,
engineers, electricians, carpenters and boatswains, and the lamp-room;
(k) water ballast tanks not appropriated for use for any other purpose;
(l) shelter space providing weather protection only for use, free of
charge, by deck passengers in ships intended for use only on voyages
not exceeding 10 hours duration;
(m) sheltered promenade space, glassed in and unfurnished except for
deckchairs or similar light portable seating, in ships intended for
use on international voyages: Provided that this paragraph shall not
apply in any case other than that specified at sub-paragraph (a)
unless the space is certified by a surveyor as being reasonable in
extent, and properly constructed, for its purpose and is permanently
marked by a notice stating that purpose.
8. Application
(1) Sub-paragraph (2) of this paragraph applies-
(a) to ships registered in Hong Kong before 1 March 1968 the tonnage of
which is to be measured under this Schedule; and
(b) to ships previously registered elsewhere than in Hong Kong which are
to be so registered; and
(c) to ships registered elsewhere than in Hong Kong in respect of which
application is made for a certificate of Hong Kong tonnage pursuant to
paragraph 3(2). (74 of 1990 Sch. 5)
(2) Without prejudice to the provisions of paragraph 7, space situated on or
above the upper deck of a ship to which this paragraph applies, being space-
(a) which, in the case of a ship described in sub-paragraph (1)(a), was by
virtue of openings in it not included in the gross tonnage of the ship
under the law in force immediately prior to 1 March 1968; or
(b) which, in the case of a ship described in sub-paragraph (1)(b) or (c),
was by virtue of there being or having been openings in it not
included in the gross tonnage of the ship specified in the national
certificate of registry in force in respect of the ship immediately
prior to her registry in Hong Kong, or the said application as the
case may be, shall not be included in the gross tonnage of the ship
irrespective of whether such openings have been closed or not, if-
(i) there has been no change since the date on which the tonnage of
the ship was last measured in the purpose for which the space
is used; and
(ii) in the case of a ship described in sub-paragraph (1)(b) or
(c) , the space is such that it would not, had the ship been registered in
Hong Kong prior to 1 March 1968 with the openings unclosed, have been
included in her gross tonnage.
B. REGISTER TONNAGE
9. Ascertainment of register tonnage
Subject to the provisions of Part III of this Schedule, the register tonnage
of a ship shall be the tonnage obtained by deducting from its gross tonnage-
(a) the tonnage of spaces specified in paragraph 10; and
(b) the tonnage allowance for propelling machinery space described in
paragraph 11: Provided that-
(i) the deduction shall in each case be subject to any condition,
limit or restriction expressed to be applicable in that case;
and
(ii) no deduction shall be made of or in respect of the tonnage of
any space which has not first been included in the ship's gross
tonnage.
10. Space to be deducted
The spaces referred to in paragraph 9(a) are-
(a) space appropriated for the accommodation of the master;
(b) crew accommodation, except space appropriated for the storage of fresh
water and space appropriated for the storage of provisions (other than
fresh water), being in the latter case space in excess of 15 per cent
of the aggregate of-
(i) space appropriated for the accommodation of the master; and
(ii) crew accommodation other than space appropriated for the
storage of provisions and fresh water;
(c) the wheelhouse and chartroom, and space fitted with and appropriated
for the use of radio and navigational aids;
(d) chain lockers and space appropriated for, or for the working of, the
steering gear, anchor gear and capstan;
(e) space appropriated for the storage of safety equipment or batteries;
(f) workshops and storerooms appropriated for the use of pumpmen,
electricians, carpenters and boatswains, and the lamp-room;
(g) space occupied by the donkey engine and boiler if they are outside the
propelling machinery space and connected to the main pumps of the
ship;
(h) space occupied by the main pumps of the ship if they are outside the
propelling machinery space;
(i) in the case of ships wholly propelled by sails, space appropriated for
the storage of sails, so however that the total tonnage of such space
does not exceed 2 1/2 per cent of the ship's gross tonnage; and
(j) water ballast tanks not appropriated for use for any other purpose, so
however that the total tonnage so to be deducted, when added to the
tonnage of spaces appropriated for water ballast not included in the
gross tonnage of the ship consisting of double bottom space, space
below bottom floor level or space above the upper deck, does not
exceed 19 per cent of the ship's gross tonnage: Provided that no
deductions shall be made-
(i) in respect of any space specified in sub-paragraph (b) unless
it is certified by a Marine Department surveyor as complying
with all applicable provisions as to crew accommodation
contained in the relevant legislation; and (74 of 1990 Sch. 5)
(ii) in respect of any space specified in sub-paragraphs (a) or (c)
to (j) unless it is certified by a surveyor to be reasonable in
extent, and properly constructed, for its purpose and is
permanently marked by a notice stating that purpose.
11. Allowance for propelling machinery space
The tonnage allowance for propelling machinery space to be deducted pursuant
to paragraph 9(b) shall be determined as follows-
(a) in the case of ships propelled by screws-
(i) if the tonnage of the propelling machinery space is 13 per cent
or over but less than 20 per cent of the gross tonnage the
allowance shall be 32 per cent of the gross tonnage;
(ii) if the tonnage of the propelling machinery space is less than
13 per cent of the gross tonnage the allowance shall be that
lesser percentage of the gross tonnage multiplied by 32/13;
(b) in the case of ships propelled by paddle wheels-
(i) if the tonnage of the propelling machinery space is 20 per cent
or over but less than 30 per cent of the gross tonnage the
allowance shall be 37 per cent of the gross tonnage;
(ii) if the tonnage of the propelling machinery space is less than
20 per cent of the gross tonnage the allowance shall be that
lesser percentage of the gross tonnage multiplied by 37/20;
(c) in the case of ships to which sub-paragraphs (a) and (b) do not apply,
the allowance shall be-
(i) in the case of ships propelled by screws, 1 3/4 times the
tonnage of the propelling machinery space;
(ii) in the case of ships propelled by paddle wheels, 1 1/2 times
the tonnage of the propelling machinery space: Provided that-
(i) in no case save that of tugs intended to be used exclusively as
such shall the allowance exceed 55 per cent of that portion of
the tonnage of the ship which remains after deducting from its
gross tonnage the deductions authorized by paragraph 9(a); and
(ii) such deductions shall be subject to the propelling machinery
space and space appropriated for its lighting and ventilation
being certified as adequate by a surveyor and being permanently
marked by notices stating their purpose.
PART III
MODIFIED AND ALTERNATIVE TONNAGES AND TONNAGE MARKS
12. Modified gross and register tonnage of ships with certain freeboards
(1) This paragraph shall apply to a ship in respect of which greater than
minimum freeboards have been assigned under the Load Line Rules and the
positions of the load lines-
(a) are not higher than would have been the case if the freeboards
assigned to the ship and the position of the load lines appropriate
thereto had been calculated treating the second deck as the freeboard
deck; or
(b) are such that the uppermost load line is not higher than the position
of the tonnage mark determined in accordance with Appendix 4 to this
Schedule.
(2) The Certifying Authority may, on the application of the owner of a ship to
which this paragraph applies, assign to the ship as its gross tonnage and
register tonnage a modified gross tonnage and modified register tonnage
ascertained in accordance with sub-paragraph (3) of this paragraph instead of
the gross tonnage and register tonnage ascertained in accordance with Part II
of this Schedule.
(3) The modified gross tonnage and modified register tonnage so to be assigned
shall be ascertained in accordance with Part II of this Schedule subject to
the following modifications-
(a) for references to the upper deck in- paragraph 4(1)(c) and (e), and
(3); paragraph 7; paragraph 8(2); paragraph 10(j); the definition of
"propelling machinery space" in the definitions at the beginning of
this Schedule and Appendix 1, paragraphs 3, 5 and 6, there shall be
substituted references to the second deck; and
(b) paragraph 4(1)(b) and paragraph 2 of Rule I of Appendix 1 shall be
omitted.
(4) Where such tonnages have been assigned to a ship there shall be placed on
each side of the ship a tonnage mark in the form described in Appendix 3 to
this Schedule, in a position in line with the uppermost load line to which the
ship may be loaded but, subject to the foregoing, in a position determined in
accordance with Appendix 4.
13. Alternative tonnages
(1) The Certifying Authority may, on the application of the owner of a ship,
assign to the ship, as an alternative to its gross tonnage and register
tonnage ascertained in accordance with Part II of this Schedule, the modified
gross tonnage and modified register tonnage ascertained in accordance with the
provisions of sub-paragraph (3) of paragraph 12.
(2) Where alternative tonnages have been assigned to a ship there shall be
placed on each side of that ship a tonnage mark in the form described in
Appendix 3 to this Schedule in a position determined in accordance with the
provisions of Appendix 4.
(3) The gross tonnage and register tonnage of the ship shall be taken to be
respectively the modified gross tonnage and modified register tonnage when the
ship is so loaded that the tonnage mark is not submerged. At all other times
the gross and register tonnages of the ship shall be those ascertained in
accordance with Part II of this Schedule.
PART IV
PLEASURE VESSELS UNDER 45 FEET IN LENGTH
14. (1) This Part of this Schedule applies only in relation to
pleasure vessels under 45 feet
(13.7 metres) in overall length which either-
(a) are to be registered in Hong Kong on or after the coming into
operation of these regulations; or
(b) being so registered before that date fall to be re-measured thereafter
pursuant to section 13 of the Ordinance.
(2) Parts I to III of this Schedule shall not apply in relation to
pleasure vessels to which this Part of this Schedule applies.
(74 of 1990 Sch. 5)
15. The tonnage of a pleasure vessel to which this Part of this Schedule
applies shall be ascertained in accordance with paragraph 16 and the tonnage
so ascertained shall be taken to be its gross and register tonnage.
16. (1) The owner of such a pleasure vessel to be measured shall make it
available for measurement pursuant to section 14 of the Ordinance by a
surveyor appointed by the Certifying Authority or a measurer appointed by the
Royal Yachting Association or the Yacht Brokers, Designers and Surveyors
Association being organizations authorized by the Director to appoint persons
to undertake the measurement of pleasure vessels to which this Part of this
Schedule applies and shall afford all necessary facilities for its inspection
and measurement and shall produce for the surveyor's or measurer's use and
retention if required such plans, drawings, specifications and other documents
relating to the pleasure vessel as he may require.
(2) The tonnage of a pleasure vessel to which this Part of this Schedule
applies shall be measured in the manner specified in Appendix 5 to this
Schedule.
(74 of 1990 Sch. 5)
PART V
SPACE TO BE TAKEN INTO ACCOUNT FOR THE PURPOSES OF DETERMINING THE DUES
PAYABLE ON GOODS CARRIED IN SPACES NOT FORMING PART OF THE REGISTERED TONNAGE
17. (1) Space to be taken into account for the purpose of determining the dues
payable where goods are carried in spaces not forming part of the registered
tonnage shall, subject to sub-paragraph (2) of this paragraph, be ascertained
in accordance with the provisions of paragraph 5 of Rule I of Appendix 1 to
this Schedule.
(2) Where-
(a) a ship has been assigned alternative tonnages in pursuance of
paragraph 13; and
(b) the tonnages applicable to the ship are the modified tonnages
ascertained in accordance with paragraph 12(3), no account shall be
taken for the purpose referred to in sub-paragraph (1) of any space,
which is included in the register tonnage ascertained in accordance
with Part II of this Schedule but which is not included in the
modified register tonnage to the extent that the tonnage of such space
exceeds the difference between those register tonnages.
(3) Goods or stores shall not be carried in any permanently closed-in space on
board the ship which has not been included in the registered tonnage of the
ship other than-
(a) dry cargo spaces;
(b) workshops or storeroom appropriated for the use of pumpmen, engineers,
electricians, carpenters and boatswains;
(c) the lamp-room; or
(d) double bottom tanks.
(74 of 1990 Sch. 5)
APPENDIX 1 TO SCHEDULE 5
MEASUREMENT OF TONNAGE
RULE I
Paragraph 2 of Schedule 5
1. Underdeck tonnage
(1) The length of the tonnage deck shall be measured in a straight line in a
middle plane of the ship between the points at the forward and after ends of
the deck where the underside of the deck, or the line of continuation thereof
in way of breaks or discontinuations of the deck, meets the inner face of the
frames, timbers, ceiling or sparring as the case may be. Such length so
measured is hereafter referred to in this Appendix and in Appendix 2 to this
Schedule as the "tonnage length".
(2) In ships which have a break, or breaks, in a double bottom the tonnage
length shall be measured in parts corresponding to the number and position of
such break or breaks.
(3) The tonnage length, or the length of each of the several parts thereof
obtained in accordance with sub-paragraph (2), shall be divided into equal
parts as shown in the following table- length 50 feet or under, into 4 equal
parts; length above 50 feet but not exceeding 120 feet, into 6 equal parts;
length above 120 feet but not exceeding 180 feet, into 8 equal parts; length
above 180 feet but not exceeding 225 feet, into 10 equal parts; length above
225 feet, into 12 equal parts: Provided that the length of any of the several
parts obtained in accordance with sub-paragraph (2) may be divided into 2
equal parts if such length is 30 feet or under.
(4) The transverse area of the ship at each point of division of the tonnage
length, or of parts of that length as aforesaid, shall be calculated as
follows-
(a) The depth in the middle plane of the ship from the underside of the
tonnage deck to the top of the open floor or double bottom as the case
may be shall be measured, deducting therefrom the average thickness of
ceiling, if fitted, and one-third the round of beam. If the top of the
double bottom falls from the middle plane of the ship, there shall be
added to the depth the mean of the fall; if the top of the double
bottom rises from the middle plane, a corresponding correction shall
be deducted from the depth. In ships of wooden construction the lower
terminal point of the depth shall be the upper side of the floor
timber at the inside of the limber strake, after deducting therefrom
the average thickness of ceiling between the bilge planks and the
limber strake.
(b) If the depth so obtained does not exceed 16 feet at the amidship
division of the total tonnage length, the depth at each point of
division of the tonnage length, or of parts of that length as
aforesaid, shall be divided into 4 equal parts; depths in excess of 16
feet shall be divided into 6 equal parts.
(c) At the point of division between each of the parts obtained in
accordance with sub-paragraph (b) the horizontal breadths to the inner
face of the timber, frame or sparring as the case may be shall be
measured. Numbering these breadths from the tonnage deck, the even
numbered breadths shall be multiplied by 4 and the others, with the
exception of the first and last, by 2; these products shall be added
together, and to the sum there shall be added the first and last
breadths; the quantity thus obtained shall be multiplied by one-third
of the common interval between the breadths and the product shall be
the transverse area in square feet.
(5) The transverse areas so obtained shall be numbered from the extreme
forward point of measurement of the tonnage length, or of the parts thereof as
the case may be; the even numbered areas shall be multiplied by 4 and the odd
numbered areas, other than the first and last, by 2; these products shall be
added together and to the sum there shall be added the area (if any) of the
first and last; the quantity thus obtained shall be multiplied by one-third of
the common interval between the areas; the product so obtained divided by 100
shall be the underdeck tonnage of the ship exclusive of the tonnage of spaces
to be included therein pursuant to paragraph 5(b) of Schedule 2 (appendages).
2. Betweendeck space between the second deck and the upper deck
(1) (a) Betweendeck space between the second deck and the upper deck shall be
measured for length in a straight line in the middle plane of the ship between
the points at the forward and after ends of the space where the inner surface
of the frames, timbers, ceiling or sparring as the case may be meets the
middle plane of the ship at half the height between the upper surface of the
deck and the underside of the deck over.
(b) Where a break exists in the second deck or the upper deck the line of
the deck shall be extended through the break parallel to the raised
part of the break; and the tonnage of the betweendeck space shall be
measured in such a case by reference to the line of the deck so
extended.
(2) The length shall be divided into equal parts as provided in paragraph 1(3)
of this Rule. At each of these points of division the horizontal breadth from
the inner face of the frames, timbers or sparring as the case may be, shall be
measured at half the height of the betweendeck space.
(3) These breadths shall be numbered from the stem, the stem being number 1.
The even numbered breadths shall be multiplied by 4 and the odd numbered,
other than the first and last, by 2. The products shall be added together and
the first and the last breadths shall be added to the sum. The quantity thus
obtained shall be multiplied by one-third of the common interval between the
breadths, and the area thus obtained shall be multiplied by the mean height
between the upper surface of the deck and the underside of the deck over. The
product so obtained divided by 100 shall be the tonnage of the betweendeck
space.
3. Breaks in the upper deck
Breaks in the upper deck shall be measured for length in a straight line in
the middle plane of the ship between the extremities of the break at half the
height of the break, terminal points at the stem or stern being taken as
described in paragraph 2(1) of this Rule. The length so obtained shall be
divided into 2 equal parts for lengths of 50 feet or less, 4 equal parts for
lengths above 50 feet but not more than 225 feet and 6 equal parts for lengths
over 225 feet. At each of the points of division the horizontal breadth at
half the height of the break at the ship's side to the inner face of the
frames, timbers or sparring as the case may be shall be measured. Numbering
these breadths from the foremost terminal point, the even numbered breadths
shall be multiplied by 4 and the odd numbered, other than the first and last,
by 2. The products shall be added together and to the sum there shall be added
the first and last breadths. The quantity thus obtained shall be multiplied
one-third of the common interval between the breadths. The area thus obtained
shall be multiplied by the height of the break. The product divided by 100
shall be the tonnage of the break.
4. Poop, bridge and forecastle
A poop, bridge or forecastle shall be measured as follows- The mean length
thereof shall be measured at half the height between the upper surface of the
deck and the underside of the deck over, terminal points at the stem and stern
being taken as described in paragraph 2(1) of this Rule. The length so
obtained shall be divided into 2 equal parts for lengths of 50 feet or under,
4 equal parts for lengths over 50 feet but not exceeding 225 feet, and 6 equal
parts for lengths exceeding 225 feet. At each of the points of division the
horizontal breadth shall be measured from the inner face of the frames,
timbers or sparring as the case may be at half the height between the upper
surface of the deck and the underside of the deck over. Numbering these
breadths from the foremost terminal point, the even numbered breadths shall be
multiplied by 4 and the odd numbered, other than the first and last, by 2. The
products shall be added together and to the sum there shall be added the first
and last breadths. The quantity thus obtained shall be multiplied by one-third
of the common interval between the breadths, and the area thus obtained shall
be multiplied by the mean height of the poop, bridge or forecastle. The
product divided by 100 shall be the tonnage of the poop, bridge or forecastle.
5. Other permanently closed-in spaces on or above the upper deck
Permanently closed-in spaces on or above the upper deck other than those dealt
with in paragraph 4 shall be measured by ascertaining their mean length,
breadth and height and the product of multiplying these dimensions together
shall, when divided by 100, be the tonnage of the space.
6. Propelling machinery space
(1) Propelling machinery space which extends to the ship's side and is
situated below the upper deck shall be measured as follows- The mean length
shall be measured in each space at half the mean depth, which shall be
measured in the middle plane of the ship from the underside of the deck
forming the crown of the space to the top of the double bottom or open floors,
allowance being made for ceiling if fitted; for amidship spaces 3 equally
spaced breadths shall be used and for spaces abaft amidships 3 equally spaced
breadths shall be used for lengths up to 30 feet, 5 equally spaced breadths
for lengths over 30 feet to 50 feet and 7 equally spaced breadths for lengths
over 50 feet, the breadths being measured from the inner face of the frames,
timbers or sparring as the case may be at half the depth of the space at that
point. The mean length, mean breadth and mean depth so ascertained shall be
multiplied together and the product divided by 100 shall be the tonnage of the
space.
(2) Propelling machinery space which does not extend to the ship's side and is
situated below the upper deck shall be measured by ascertaining its mean
length, mean breadth and mean depth, and the product of multiplying these
dimensions together shall, when divided by 100, be the tonnage of the space.
7. Shaft bossings and appendages
The tonnage of shaft bossings and other appendages referred to in paragraph
5(b) of Schedule 5 shall be ascertained by measuring the internal cubic
capacity of the space as accurately as practicable and dividing the result by
100.
RULE II
MEASUREMENT OF TONNAGE BELOW THE UPPER DECK WHERE MEASUREMENT IN ACCORDANCE
WITH RULE I IS IMPRACTICABLE
1. The length of the ship shall be measured on the upper side of the
upper deck from the inside of the outer plate or plank at the stem to the aft
side of the stern-post, or to the fore side of the rudder stock where no
stern-post is fitted. The extreme breadth of the ship shall be measured,
excluding rubbers or fenders. The girth, from the upper edge of the upper deck
at side on one side of the ship to the same point at the other side, shall be
measured on the outside of the ship at the greatest breadth. To half the girth
thus measured there shall be added half the aforesaid breadth. The square of
the sum shall be multiplied by the aforesaid length. This product multiplied
by 0017 in the case of ships built of wood and by 0018 in the case of other
ships shall be the tonnage of the ship below the upper deck.
2. In any case in which the surveyor is satisfied that by reason of the size
of the ship it is not reasonably practicable to measure its girth as provided
in paragraph 1, such girth shall be ascertained by adding the aforesaid
breadth of the ship to twice the depth of the ship from the top of the
upper deck at the side of the ship to the bottom of the keel and multiplying
this sum by 0.98.
APPENDIX 2 TO SCHEDULE 5
LIMITATION OF HEIGHT OF OPEN FLOORS AND DOUBLE BOTTOMS, AND OF DEPTHS OF
FRAMES AND SIDE BRACKETS, FOR PURPOSES OF MEASUREMENT OF UNDERDECK TONNAGE
Paragraph 5 of Schedule 5
The provisions of this Appendix shall have effect for the purposes of the
measurement of underdeck tonnage.
1. Open floors
(1) Any part of an open floor, other than a floor in the main space for the
propelling machinery of a ship, which is situated above the horizontal line
hereinafter described shall be disregarded for the purposes of measurement of
underdeck tonnage, which shall be measured accordingly by reference to the
said line.
(2) The line above referred to shall be a line passing through a point in the
middle plane of the ship at a height consisting of the maximum height of open
floors applicable to a ship of the tonnage length of the ship undergoing
measurement, ascertained by reference to columns A and B of Table I and
corrected by the addition of a distance equal to the rise of the moulded frame
line at one quarter of the breadth of the ship between moulded frame lines at
the said maximum height.
(3) The provisions of this paragraph shall also apply in the case of ships
fitted with longitudinal floors and/or frames.
2. Double bottoms
A double bottom, situated in any part of a ship other than the main space for
the propelling machinery, which is of greater height than a height consisting
of the maximum height of double bottom applicable to a ship of the tonnage
length of the ship undergoing measurement, ascertained by reference to columns
A and C of Table I and corrected by the addition of a distance equal to the
rise of the moulded frame line at one quarter of the breadth of the ship
between moulded frame lines at the said maximum height, shall be treated not
as a double bottom but as an open floor of such height ascertained in
accordance with the provisions of paragraph 1(2) of this Appendix as would be
applicable in the case of a ship of the tonnage length of the ship undergoing
measurement.
3. Bilge brackets
(1) The horizontal width of bilge brackets measured from the shell of the ship
to the inboard toe of the bracket shall not-
(a) if taken at the level of the top of an open floor, exceed the maximum
height of open floor applicable to the ship obtained by reference to
columns A and B of Table I;
(b) if taken at the level of the top of a double bottom, exceed the
maximum height of double bottom applicable to the ship obtained by
reference to columns A and C of that Table.
(2) In any case in which underdeck tonnage is measured by reference to a
height ascertained and applied in accordance with the provisions of paragraphs
1 and 2 of this Appendix, the lowest breadth used in the measurement of
underdeck tonnage area shall be the breadth between the inner sides of the
shell of the ship taken at that height, less twice the maximum height of open
floor applicable to the ship obtained by reference to columns A and B of Table
I or twice the width of the bilge bracket whichever is the less.
4. Allowance for ceiling
The limitations imposed by the preceding three paragraphs are exclusive of an
allowance for ceiling, if fitted.
5. Depth of frames
(1) Subject to sub-paragraph (2), the extent to which the depth of transverse
or longitudinal ship side framing in the case of any ship, measured from its
shell, exceeds the maximum depth of frame applicable to a ship of the
registered breadth of the ship undergoing measurement ascertained by reference
to Table II shall be disregarded and underdeck tonnage shall be measured
accordingly by reference to the maximum depth of frame so ascertained.
(2) In the case of a ship in which alternate deep and shallow frames are
fitted, the depth of frame used for purposes of measurement, measured from the
shell of the ship, shall not exceed whichever is the lesser of the following
dimensions-
(a) twice the depth of the shallow frame; or
(b) the maximum depth of frame applicable to the ship ascertained as
aforesaid.
(3) The limitations imposed by sub-paragraphs (1) and (2) are exclusive of an
allowance for sparring fitted on the toe of the frames.
TABLE I
A Tonnage Length of Ship B
Maximum Height of
Open Floors C
Maximum Height of
Double Bottom
The dimensions shown are to be increased by 50 per cent for the foremost 25
per cent and aftermost 15 per cent of the tonnage length of the ship. in feet
in inches in inches Not exceeding 60 23 34.5 80 24 36 100 25 37.5 120 26 39
140 27 40.5 160 180 28
29 42
43.5 200 30 45 220 31 46.5 240 32 48 260 33 49.5 280 300 34
35 51
52.5 320 36 54 340 37 55.5 360 38 57 380 400 39
40 58.5
60 420 41 61.5 440 42 63 460 43 64.5 480 44 66 500 520 45
46 67.5
69 540 47 70.5 560 48 72 580 49 73.5 600 50 75 620 51 76.5 640 52 78 660 53
79.5 680 54 81 700 55 82.5
In the case of ships of intermediate length, the maximum height of floors or
double bottoms shall be obtained by interpolation, and in the case of ships
exceeding 700 feet, by linear extrapolation.
TABLE II
Registered Breadth in feet Maximum Depth of Frame
in inches Not exceeding 20 14 30 16 40 18 50 20 60 22 70 25 80 28 90 31 100
and above 34
In the case of ships of intermediate breadths, the maximum depth of frame
shall be obtained by interpolation.
APPENDIX 3 TO SCHEDULE 5
TONNAGE MARK
Paragraphs 12 and 13 of Schedule 5
1. Save as otherwise provided in paragraph 2, the tonnage mark shall consist
as shown in Figure 1 of a horizontal line 15 inches long and 1 inch wide upon
which shall be placed for identification purposes an inverted equilateral
triangle, each side of which is 12 inches long and 1 inch wide, having its
apex on the mid-point of the horizontal line.
2. In the case of a ship intended to operate in fresh or tropical waters as
defined in the Load Line Rules (not being a ship on which tonnage marks have
been placed in accordance with paragraph 12 of Schedule 5), an additional
horizontal line may on the application of the owner of the ship be placed
above the tonnage mark described in paragraph 1 at a distance of one
forty-eighth (1/48th) of the moulded draught to that tonnage mark. This
additional line shall be 9 inches long and 1 inch wide measured from a 1 inch
wide vertical line (shown marked "W" in Figure 1) at the after end of, and
perpendicular to, that tonnage mark. In such a case, at all such times as the
ship so marked is operating in fresh or tropical waters as aforesaid, this
additional line shall be taken to be the tonnage mark in lieu of that
described in paragraph 1.
3. The lines and triangle above mentioned shall be painted in white or yellow
on a dark ground or in black on a light ground, and carefully cut in, centre
punched or welded on the sides of the ship. They shall be so kept and
maintained as to be plainly visible at all times save when submerged.
APPENDIX 4 TO SCHEDULE 5
POSITION OF TONNAGE MARKS
Paragraphs 12 and 13 of Schedule 5
1. The tonnage mark shall be placed on each side of the ship at a distance
below the line where the underside of the second deck stringer plate meets the
ship's side plating amidships, or below the line equivalent to that line as
shown in Figure 2 in cases where the deck is stepped, to be ascertained by
reference to the Tonnage Mark Table at the end of this Appendix.
2. In that Table-
(1) the length Lt in column A is the distance in feet on the second deck
between the points at the forward and after ends of the deck where the
underside of the deck or line of continuation thereof meets the inner surface
of the frames, ceiling or sparring as the case may be in the middle plane of
the ship, using an equivalent length in cases where the deck is stepped as
shown in Figure 2;
(2) the depth Ds is the depth in feet amidships from the top of the keel to
the point at which the underside of the second deck stringer plate meets the
ship's side plating, using an equivalent depth as shown in Figure 2 in cases
where the deck is stepped;
(3) the figures at the top of columns B to J represent the ration Lt/Ds and
the figures below in each column represent distances in inches from the line
where the underside of the second deck stringer plate meets the ship's side
plating amidships (or, in cases where the deck is stepped, from the equivalent
line thereto as shown in Figure 2) to the point at which the upper edge of the
tonnage mark is to be placed.
3. In the case of any ship of intermediate length or having an intermediate
Lt/Ds ratio, the relevant distance to be applied shall be obtained by
interpolation, and in other cases where necessary by linear extrapolation.
4. The effective relevant distance calculated by reference to the Tonnage Mark
Table to be applied in the case of any ship shall be corrected to the nearest
half-inch.
FIGURE 2
THIS SKETCH ILLUSTRATES HOW THE EQUIVALENT SECOND DECK SHOULD BE DETERMINED,
BASED ON EQUAL LONGITUDINAL AREAS
5. In the case of a ship to which load lines have been assigned the tonnage
marks shall, subject to the provisions of paragraph 12 of Schedule 5 be placed
in a position ascertained in accordance with the foregoing provisions of this
Appendix with the apex of the identification triangle at a distance of 21
inches horizontally aft of the centre line of the load line disc: Provided
that in no case shall the tonnage marks be placed above the uppermost load
line to which the ship may be loaded.
6. In the case of a ship to which load lines have not been assigned the
tonnage marks shall be placed in a position ascertained in accordance with the
foregoing provisions of this Appendix with the apex of the identification
triangle at the middle of the length Lt. In every such case the line of the
upper deck shall be shown be a deck line corresponding in form to that
required by the Load Line Rules and placed centrally to a vertical line
bisecting the identification triangle of the tonnage mark.
TONNAGE MARK TABLE
A B C D E F G H I J Lt/Ds 12 13 14 15 16 17 18 19 20 Length Lt in feet
Distances in inches 220 and under 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 230 3.2
2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 240 4.7 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 250
6.3 3.3 2.0 2.0 2.0 2.0 2.0 2.0 2.0 260 8.0 4.8 2.1 2.0 2.0 2.0 2.0 2.0 2.0
270 9.9 6.4 3.5 2.0 2.0 2.0 2.0 2.0 2.0 280 11.8 8.1 4.9 2.1 2.0 2.0 2.0 2.0
2.0 290 13.9 9.9 6.5 3.5 2.0 2.0 2.0 2.0 2.0 300 16.0 11.7 8.1 4.9 2.1 2.0 2.0
2.0 2.0 310 18.3 13.7 9.8 6.4 3.5 2.0 2.0 2.0 2.0 320 20.7 15.8 11.7 8.1 4.9
2.1 2.0 2.0 2.0 330 23.2 18.0 13.6 9.8 6.4 3.5 2.0 2.0 2.0 340 25.9 20.4 15.7
11.6 8.1 4.9 2.1 2.0 2.0 350 28.7 22.9 17.9 13.6 9.8 6.5 3.6 2.0 2.0 360 31.7
25.5 20.2 15.7 11.7 8.2 5.0 2.2 2.0 370 34.7 28.3 22.7 17.9 13.6 9.9 6.6 3.7
2.0 380 38.0 31.1 25.3 20.2 15.7 11.8 8.3 5.2 2.4 390 41.3 34.1 27.9 22.6 17.9
13.8 10.1 6.8 3.8 400 44.8 37.2 30.7 25.0 20.1 15.8 11.9 8.4 5.3 410 48.2 40.3
33.5 27.7 22.6 18.1 14.0 10.4 7.2 420 51.5 43.4 36.4 30.4 25.2 20.6 16.4 12.7
9.4 430 54.8 46.5 39.4 33.3 27.9 23.2 19.0 15.2 11.8 440 58.4 49.9 42.6 36.4
30.9 26.0 21.7 17.8 14.4 450 62.1 53.4 46.0 39.6 33.9 29.0 24.6 20.6 17.1 460
65.9 57.0 49.5 42.9 37.1 32.1 27.6 23.5 19.9 470 69.8 60.7 53.0 46.3 40.4 35.2
30.6 26.5 22.8 480 73.7 64.4 56.5 49.7 43.7 38.4 33.7 29.5 25.7 490 77.5 68.1
60.0 53.0 46.9 41.5 36.7 32.4 28.5 500 81.6 71.6 63.4 56.2 50.0 44.5 39.6 35.2
31.2 510 84.9 75.1 66.7 59.4 53.0 47.4 42.4 37.9 33.9 520 88.4 78.4 69.9 62.4
55.9 50.2 45.1 40.5 36.4 530 91.8 81.6 72.9 65.3 58.7 52.9 47.7 43.0 38.8 540
95.2 84.8 75.9 68.1 61.4 55.5 50.2 45.4 41.2 550 98.4 87.8 78.8 70.9 64.0 58.0
52.6 47.8 43.4 560 101.6 90.8 81.6 73.6 66.6 60.5 55.0 50.1 45.6 570 104.8
93.8 84.4 76.3 69.2 62.9 57.3 52.3 47.8 580 107.9 96.8 87.2 78.9 71.7 65.3
59.6 54.5 49.9 590 111.0 99.7 90.0 81.5 74.2 67.7 61.9 56.7 52.0 600 114.0
102.5 92.6 84.0 76.5 69.9 64.0 58.8 54.0 610 117.0 105.3 95.2 86.5 78.9 72.1
66.2 60.8 56.0 620 120.0 108.0 97.8 88.9 81.2 74.4 68.3 62.8 58.0 630 122.9
110.7 100.4 91.3 83.5 76.6 70.4 64.8 59.9 640 125.7 113.4 102.9 93.7 85.8 78.7
72.4 66.8 61.7 650 128.6 116.1 105.4 96.1 88.0 80.8 74.4 68.7 63.6 660 131.4
118.7 107.8 98.3 90.1 82.8 76.3 70.6 65.3 670 134.2 121.2 110.2 100.6 92.2
84.8 78.3 72.4 67.1 680 136.9 123.8 112.6 102.9 94.3 86.8 80.2 74.2 68.9 690
139.6 126.3 115.0 105.1 96.4 88.8 82.1 76.0 70.6 700 142.3 128.8 117.3 107.3
98.5 90.8 83.9 77.8 72.3
710 144.9 131.3 119.6 109.4 100.5 92.7 85.7 79.5 73.9 720 147.5 133.7 121.8
111.5 102.5 94.6 87.5 81.2 75.5 730 150.1 136.1 124.0 113.6 104.5 96.5 89.3
82.9 77.1 740 152.7 138.5 126.2 115.7 106.5 98.3 91.1 84.5 78.7 750 155.3
140.8 128.5 117.8 108.4 100.1 92.8 86.1 80.3 760 157.8 143.1 130.6 119.7 110.3
101.9 94.4 87.8 81.7 770 160.2 145.4 132.7 121.7 112.1 103.6 96.0 89.3 83.2
780 162.6 147.6 134.8 123.7 113.9 105.3 97.6 90.8 84.7 790 165.1 149.9 136.9
125.6 115.7 107.0 99.2 92.3 86.1 800 167.5 152.1 138.9 127.4 117.4 108.6 108.8
93.8 87.4
APPENDIX 5 TO SCHEDULE 5
PLEASURE VESSELS UNDER 45 FEET IN LENGTH- ASCERTAINMENT OF TONNAGE
1. Tonnage in relation to any pleasure vessel to which Part IV of this
Schedule applies shall be measured in terms of cubic capacity.
2. (1) The tonnage of the vessel shall be the sum of-
(a) the product of multiplying together its overall length, breadth and
depth, and multiplying the resultant figure by 0.0045; and
(b) the tonnage of any break or breaks defined in paragraph 3 and
calculated in accordance with the provisions of that paragraph.
(2) The breadth of a vessel for this purpose shall be its extreme breadth over
the outside plating, planking or hull, no account being taken of rubbers or
fenders even if they are moulded so as to be integral with the hull.
(3) (a) The depth of a vessel for this purpose shall be measured vertically
midway between the foremost and aftermost points of measurement of its length.
(b) The upper terminal point for depth shall be-
(i) in the case of a decked vessel, the underside of deck on the
middle line or, if there is no deck at the middle line at the
point of measurement, the underside of the deck at side of the
vessel plus the full deck camber;
(ii) in the case of an open vessel, the top of the upper strake or
gunwale.
(c) The lower terminal point for depth shall be-
(i) in the case of a wooden vessel, the upper side of planking at
side of keel or hog;
(ii) in the case of a metal vessel, the top of plating at side of
keel;
(iii) in the case of a glass reinforced plastic vessel, the inside of
hull. Where no keel member is fitted and the keel is of open
trough construction, the lower terminal point for depth shall
be the top of the keel filling, if fitted, or the level at
which the inside breadth of the trough is 4 inches, whichever
gives the lesser depth.
(d) Where a break exists in way of the point of measurement for depth, the
height of the break shall not be included in the measurement of depth.
3. A break for the purpose of paragraph 2(1)(b) shall be a side to side break
existing in the line of the deck, and its tonnage shall be the figure obtained
by multiplying together the mean length, mean breadth and mean height of the
break and dividing the product by 100.
4. In the case of a catamaran or trimaran the tonnage of each hull shall be
measured separately, using the breadth of each hull for the purposes of its
measurement, and the sum of such tonnages shall be the tonnage of the vessel.
5. All measurements shall be taken and expressed in feet and decimals of 1
foot to the nearest one-tenth of 1 foot.
6. Tonnage shall be expressed to two decimal places, the second decimal place
being increased by 1 if the third decimal place is 5 or more. "crew
accommodation" (船員艙房) "dry cargo space" (乾貨艙) "overall length"
(整體長度) "propelling machinery space" (推進機械艙) "second deck"
(第二層甲板) "surveyor" (驗船師) "tonnage deck" (量噸甲板) "upper
deck" (上甲板) "permanently closed-in spaces on or above the upper deck"
(上甲板或以上的永久封閉艙位) "excess of hatchways"
(艙口超額噸位)
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