1964_MERCHANT_SHIPPING_(MINIMUM_PASSENGER_SPACE)_REGULATIONS — Page 19

1969 Ed.]

Merchant Shipping (Minimum Passenger Space) Regulations.

[CAP. 281

N 19

[Subsidiary]

(7) Every ventilator coaming shall-

(a) project to the bottom of the beam of the compartment that it serves;

(b) be measured at the narrowest part of the air passage;

and

(c) not exceed 452 square inches in area (24 inches in diameter); and

(d) be not less than 78.5 square inches in area (10 inches in diameter).

(8) If less than 4 ventilators are fitted to any one compartment, suitable trunks shall be provided to ensure proper distribution of air, except where any such ventilator does not exceed 15 inches in diameter, in which case, such trunking shall not be required.

(9) If an odd number of ventilators is fitted, the prescribed inlet and exhaust areas shall be maintained.

(10) If any trunking or air passage has a curved bend or knee and the angle does not exceed 30°, no additional area is required to be provided; but for any curved bend or knee of which the angle exceeds 30°, the following additions to the area shall be made-

(a) for curved bends of angles ranging between 30° to 60°, 5 per centum additional area for each such curved bend;

(b) for curved bends of angles ranging between 60° to 90°, 10 per centum additional area for each such curved bend;

(c) for knees of angles ranging between 30° to 60°, 16 per centum additional area for each such knee; and

(d) for knees of angles ranging between 60° to 90°, 36 per centum additional area for each such knee.

(11) If the radius of the inner side of any curved bend is less than the diameter of the trunk or air passage, the bend shall be regarded as a knee.

23. (1) In every ship to which these regulations apply engaged in the eastern trade area, other than a ship engaged exclusively in the river trade area, every space allocated for the accommodation of unberthed passengers situated-

(a) below the uppermost between deck; or

(b) in a compartment in an upper between deck that is completely covered by a long superstructure,

shall be ventilated by a trunked mechanical ventilation or other air change system approved by the Director:

Mechanical ventilation of unberthed passenger spaces.