Hong Kong Regulations

MERCHANT SHIPPING (INSTRUCTIONS TO SURVEYORS) (PASSENGER SHIPS) REGULATIONS - REGULATION 46

Ash-shoots, rubbish-shoots, etc.

(1) (a) The inboard opening of each ash-shoot, rubbish-shoot, etc., shall be
fitted with an efficient cover.

   (b)  If the inboard opening is situated below the margin line the cover
        shall be watertight and in addition an automatic non-return valve
        shall be fitted in the shoot in an easily accessible position above
        the deepest subdivision loadline. This valve should be of the
        horizontal balanced type, normally closed, and is to be provided with
        a local means for securing it in the closed position.

   (c)  When the shoot is not in use both the cover and the valve are to be
        kept closed and secured. A permanent and conspicuous notice to this
        effect is to be fixed near the hopper.

(2) The foregoing requirements do not apply to those ash ejectors and
expellers, the inboard openings of which must necessarily be below the deepest
subdivision loadline in the stokehold, provided that such ejectors and
expellers are fitted with efficient valves and other fittings for preventing
water entering the ship through them.