### Merchant Shipping (Safety) (Cargo Ship Construction and Survey) (Ships Built On or After 1 September 1984) Regulations 《商船(安全)(貨船構造及檢驗)(1984年9月1日或之後建造的船舶)規例》

1. Citation, interpretation, application and exemption
(1) These regulations may be cited as the Merchant Shipping (Safety) (Cargo Ship Construction and Survey) (Ships Built On or After 1 September 1984) Regulations.
(1A) (Omitted as spent)(2) In these regulations—
“accommodation spaces” (起居艙) means passenger spaces, corridors, lavatories, cabins, offices, crew spaces, hairdressing salons, pantries not containing cooking appliances, lockers and similar spaces;
alteration (改動), for the purposes of the definition of constructed

2. Structural strength
The structural strength of every ship and the number and disposition of transverse watertight bulkheads shall be adequate for the service for which the ship is intended. The hull, superstructure, structural bulkheads, deck and deckhouses shall be constructed of steel or other equivalent material except that the crowns and casings of machinery spaces of Category A shall be constructed only of steel.

### Merchant Shipping (Safety) (Cargo Ship Construction and Survey) (Ships Built On or After 1 September 1984) Regulations 《商船(安全)(貨船構造及檢驗)(1984年9月1日或之後建造的船舶)規例》

3A. Double bottoms
(1) This regulation applies to post 1992 ships.
(2) In every ship other than tankers, a double bottom shall be fitted extending from the collision bulkhead to the afterpeak bulkhead, provided that the Certifying Authority may permit a double bottom to be dispensed with in compartments where its fitting would not be compatible with the design and proper working of the ship.
(3) Where a double bottom is required by this regulation to be fitted in a ship, its depth shall be to the satisfaction of the Certifying Authority and the inner bottom shall be continued out to the ship’s sides in such a manner as to protect the bottom to the turn of the bilge.
(4) Wells constructed in the double bottom for the purpose of drainage shall not be larger nor extend in depth more than is necessary for such purpose except that a well extending to the outer bottom may be constructed at the after end of the shaft tunnel of the ship.
(5) Wells for purposes other than drainage shall not be constructed in the double bottom. The Certifying Authority may exempt any ship from the requirement of this subregulation in respect of any well which it is satisfied will not diminish the protection given by the double bottom.
(6) Nothing in this regulation shall require a double bottom to be fitted in way of watertight compartments used exclusively for the carriage of liquids, if in the opinion of the Certifying Authority the safety of the ship will not be impaired in the event of bottom damage by reason of the absence of a double bottom in that position.
(L.N. 415 of 1995)

### Merchant Shipping (Safety) (Cargo Ship Construction and Survey) (Ships Built On or After 1 September 1984) Regulations 《商船(安全)(貨船構造及檢驗)(1984年9月1日或之後建造的船舶)規例》

4. Construction and testing of watertight bulkheads, decks and inner bottoms
(1) In every ship each transverse and longitudinal watertight subdivision bulkhead shall be constructed in such a manner that it shall be capable of supporting, with a proper margin of resistance, the pressure due to the maximum head of water which it might have to sustain in the event of damage to the ship. The head of water shall be at least that due to a head of water up to the freeboard deck.
(2) Steps and recesses in the bulkheads shall be watertight and of strength equivalent to that of the bulkhead.
(3) Frames or beams that pass through a watertight deck or bulkhead shall be made structurally watertight without the use of wood or cement.
(4) Watertight compartments shall be tested either by flooding or by a hose test at the most advanced stage of the fitting out of the ship to establish that the watertight bulkheads are effective.
(5) The forepeak, double bottoms, duct keels and inner skins shall be tested by flooding with water to the head prescribed in subregulation (1).
(6) Tanks intended to hold liquids and which form part of the subdivision of the ship shall be tested by flooding with water to a head corresponding to the deepest subdivision load line or to two thirds of the depth from the top of the keel to the freeboard deck whichever is the greater. In no case shall the test head be less than 0.9 metre above the top of the tank.
(7) The tests prescribed in this regulation shall not necessarily be regarded as a test of fitness of any compartment for the storage of oil fuel or for other special purposes for which a test of a superior character may be appropriate.

5. Construction and testing of watertight decks, trunks, tunnels, duct keels and ventilators
(1) In every ship the watertight decks, trunks, tunnels, duct keels and ventilators shall be of the same strength as the watertight bulkheads at corresponding levels. The means used for making them watertight and the arrangements adopted for closing openings in them shall be to the satisfaction of the Certifying Authority. Watertight ventilators and trunks shall be watertight at least up to the freeboard deck.
(2) Watertight decks shall be subjected to a hose or flooding test after completion. Watertight trunks, tunnels and ventilators shall be subjected to a hose test on completion.

5A. Opening in shell plating below freeboard deck
A ship constructed on or after 1 July 1998 must comply with the applicable requirements on the opening in the shell plating below the freeboard deck specified in regulations 17 and 17-1 of specified Chapter II-1.
(L.N. 251 of 2018)

### Merchant Shipping (Safety) (Cargo Ship Construction and Survey) (Ships Built On or After 1 September 1984) Regulations 《商船(安全)(貨船構造及檢驗)(1984年9月1日或之後建造的船舶)規例》

6. Watertight doors
(1) In every ship in which a watertight door is provided to maintain the watertight integrity of a bulkhead or deck, every such watertight door shall be made of suitable material and shall be efficiently constructed for its intended duty.
(2) (a) Every watertight door of the sliding type shall be capable of being operated by efficient hand operated gear both at the door itself and from an accessible position above the bulkhead deck.
(b) The operating gear for operating from above the bulkhead deck any sliding watertight door fitted in the bulkhead of a machinery space shall be situated outside the machinery space.
(3) Where there is access from the lower part of a machinery space to a watertight shaft tunnel the access opening shall be provided with a sliding watertight door which shall be capable of being operated locally from both sides of the door.
(4) Means shall be provided at remote operating positions to indicate when a sliding door is closed.
(5) Watertight doors shall be capable of being operated when the ship is listed up to 15 degrees either way.

7. Tests of watertight doors
Each watertight door in every ship shall be tested by water pressure equivalent to the head up to the freeboard deck.

### Merchant Shipping (Safety) (Cargo Ship Construction and Survey) (Ships Built On or After 1 September 1984) Regulations 《商船(安全)(貨船構造及檢驗)(1984年9月1日或之後建造的船舶)規例》

9. General
(1) This Part applies to tankers designed to carry—
(a) crude oil and petroleum products which have a closed flash-point not exceeding 60oC and the Reid vapour pressure of which is below that of atmospheric pressure, or
(b) other liquids having a similar fire hazard,
except chemical tankers and gas carriers which comply with the constructional requirements specified in the Codes referred to in the definitions of such ships in regulation 1.
(2) The hull, superstructures, structural bulkheads, decks and deckhouses shall be constructed of steel or other equivalent material except that the crowns and casings of machinery spaces of Category A and the exterior boundaries of superstructures and deckhouses which are required to be insulated to A60 standard under regulation 133 of the Merchant Shipping (Safety) (Fire Protection) (Ships Built On or After 1 September 1984) Regulations (Cap. 369 sub. leg. Y) shall be constructed only of steel.