Hong Kong Regulations

MERCHANT SHIPPING (REGISTRATION) (TONNAGE) REGULATIONS - REGULATION 8

Miscellaneous tonnages; segregated ballast oil tankers and deck cargoes

(1) Where segregated ballast tanks complying with regulation 13 of Annex 1 of
International Convention for the Prevention of Pollution from Ships, 1973 as
modified by the Protocol of 1978 relating to that Convention are provided in
oil tankers, an entry may be made on the International Tonnage Certificate
(1969) indicating the total tonnage of these tanks. The tonnage of such
segregated ballast tanks shall be calculated according to the following
formula: K1 × Vb where: K1 = 0.2 + 0.02 log10 V or as specified in Schedule 3
V = the total volume of all enclosed spaces of the ship in cubic metres Vb =
the total volume of segregated ballast tanks in cubic metres measured in
accordance with regulation 5.

(2) Where cargo is carried in any uncovered space on deck the tonnage of the
space so occupied to be taken into account for the purposes of determining the
dues payable where goods are carried in spaces not forming part of the gross
or net tonnages, shall be determined by the formula: (74 of 1990 Sch. 5) Deck
Cargo Tonnage = 0.353 (mean length x mean breadth x mean height).