【法规名称】
【法规编号】 61512 什么是编号？
【正 文】
第7页 CAP 369C MERCHANT SHIPPING (INSTRUCTIONS TO SURVEYORS) (PASSENGER SHIPS) REGULATIONS
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[接上页] (a) the combined length of the two compartments, separated by the bulkhead in question, does not exceed 90 per cent of the floodable length; or (b) additional subdivision is provided in way of the step to maintain the same measure of safety as that secured by a plane bulkhead.(5) Equivalent plane Bulkheads: Where a main transverse bulkhead is recessed or stepped, and equivalent plane bulkhead shall be used in determining the subdivision. (6) Minimum spacing of Bulkheads: If the distance between two adjacent main transverse bulkheads, or their equivalent plane bulkheads, or the distance between the transverse planes passing through the nearest stepped portions of the bulkheads, is less than .02L+10 feet, only one of these bulkheads shall be regarded as forming part of the subdivision of the ship in accordance with the provisions of paragraph 12. (7) Allowance for Local Subdivision: (a) Where a main transverse watertight compartment contains local subdivision and it can be shown to the satisfaction of the Surveyor of Ships that, after any assumed side damage extending over a length in feet of .02L+10, the whole volume of the main compartment will not be flooded, a proportionate allowance may be made in the permissible length otherwise required for such compartment. In such a case the volume of effective buoyancy assumed on the undamaged side shall not be greater than that assumed on the damaged side.(b) The claim for such allowance shall be accompanied by plans showing the proposed local subdivision and the volumes of the main and sub-compartments concerned. No allowance will be made where the main compartment and sub-compartments are liable to be in open communication, below the level of the margin line, through air, sounding or other pipes, etc.(8) Longitudinal Subdivision: (a) Where it is proposed to fit watertight decks, inner skins or longitudinal bulkheads, watertight or non-watertight, the Surveyor of Ships shall be satisfied that the safety of the ship will not be diminished in any respect, particularly having in view the possible listing effect of flooding in way of such structural arrangements. Except as provided in sub-paragraph (7) no relaxation from the requirements for transverse subdivision shall be made in respect of longitudinal subdivision. (b) The arrangements which fall within the general category of longitudinal subdivision are of such a varied character that it is not possible to lay down definite rules which would apply equitably to all cases that may arise in practice. (c) Calculations of angle of heel or of effect on stability may be necessary and plans showing the proposed longitudinal subdivision are therefore to be submitted for the Principal Surveyor of Ships for consideration and decision as to the calculations to be made and the spaces to be assumed flooded. The object of these calculations is to show: (i) The angle of heel which might result from flooding due to side damage extending over a length in feet not exceeding .02L+10. If this angle is more than 7 degrees, the Surveyor of Ships will as a rule require such arrangements to be made as will enable the list to be expeditiously reduced to an angle not exceeding 7 degrees.(ii) The angle of heel which might result from flooding of such compartments as may reasonably be assumed vulnerable under certain conditions of damage having regard to the arrangements under consideration. If this angle is such that the margin line would not be submerged the arrangements may be allowed, otherwise they will require modification.(iii) The effect on stability of flooding in way of a watertight deck.The result of this calculation will be considered on its merits. (d) In making these calculations the ship is to be assumed to be in the worst anticipated service condition as regards stability, the permeabilities of the spaces assumed to be flooded being taken consistent with this condition as far as possible. (e) The stability conditions assumed in these calculations are to be confirmed after the ship has been inclined (see paragraph 53). Cap 369C reg 14 Peak and machinery space bulkheads, shaft tunnels, etc. (1) Collision Bulkhead: Every ship shall have a fore-peak or collision bulkhead, which shall be watertight up to the bulkhead deck. This bulkhead shall be fitted not less than .05L, and not more than .05L+10 feet from the forward perpendicular. If the ship has a long forward superstructure, the fore-peak bulkhead shall be extended weathertight to the deck next above the bulkhead deck. The extension need not be fitted directly over the bulkhead below, provided it is at least .05L from the forward perpendicular, and the part of the bulkhead deck which forms the step is made effectively weathertight. (See paragraph 18(5)). (2) After-peak and Machinery Space Bulkheads: An after-peak bulkhead, and bulkheads dividing the machinery space, as defined in paragraph 6(11), from the cargo and passenger spaces forward and aft, shall also be fitted and made watertight up to the bulkhead deck. The after-peak bulkhead may, however, be stopped below the bulkhead deck, provided the degree of safety of the ship as regards subdivision is not thereby diminished. |
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