Div 9Means of Operating Sliding Watertight Doors.

Division 9.—Means of Operating Sliding Watertight Doors.

Certain doors to be operated by power.

38.—(1.) Where a Class I. ship is fitted with six or more sliding bulkhead watertight doors or has a criterion numeral exceeding thirty, all sliding bulkhead watertight doors, and all tunnel doors, in the ship shall be operated by power and shall be capable of being simultaneously closed from a central control situated on the bridge of the ship.

(2.) The last preceding sub-regulation does not apply to a ship if—

(a) there is only one sliding bulkhead watertight door, and only one tunnel door, in the ship; and

(b) both of those doors are in the machinery space of the ship.

(3.) In this regulation, “sliding bulkhead watertight door” means a sliding watertight door (other than a door at the entrance of a tunnel)—

(a) which is fitted in a bulkhead;

(b) which is in a position which may require it to be opened at sea; and

(c) the sill of which is below the deepest sub-division load waterline of the ship.

(4.) Subject to the next succeeding sub-regulation, all sliding watertight doors in a Class II. ship or Class III. ship required by paragraph 11 of the First Schedule to have a factor of sub-division of .5 or less shall be operated by power and shall be capable of being simultaneously closed from a central control situated on the bridge of the ship.

(5.) The last preceding sub-regulation does not apply to a ship if there is only one sliding watertight door in the ship and that door is in the machinery space of the ship.

(6.) A sliding watertight door which—

(a) is fitted between bunkers in the between decks of a ship below the bulkhead deck; and

(b) may be required to be opened at sea for the purpose of trimming coal,

shall be operated by power.

(7.) Where, in a ship—

(a) a trunkway which is part of a refrigeration, ventilation or forced draught system is carried through more than one transverse watertight bulkhead;

(b) the sill of an opening by which the trunkway is carried through such a bulkhead is less than seven feet above the deepest sub-division load water-line of the ship; and

(c) a sliding door is fitted to that opening,

that sliding door shall be operated by power.

Control of sliding watertight doors operated by power.

39.—(1.) Where a sliding watertight door in a ship is required by these Regulations to be operated by power from a central control on the bridge of the ship—

(a) the door shall also be capable of being operated by power at the door itself;