【法规名称】
【法规编号】 61512 什么是编号？
【正 文】
第5页 CAP 369C MERCHANT SHIPPING (INSTRUCTIONS TO SURVEYORS) (PASSENGER SHIPS) REGULATIONS
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[接上页] Cap 369C reg 8 Method of calculating floodable length Flooding curves are to be developed by a method of calculation which takes due account of the form, draught, and other characteristics of the ship in question. For the present the method described in Appendix I is to be used generally and to the exclusion of independent calculations, provided, however, that where it is shown to the satisfaction of the Principal Surveyor of Ships that a ship is of such unusual form that this method is not completely accurate, an approved alternative method may be used. (See paragraph 75). Cap 369C reg 9 Permeability (1) The definite assumptions referred to in paragraph 7 relate to the permeabilities of the spaces below the margin line. In determining the floodable length, a uniform average permeability shall be used throughout the whole length of each of the following portions of the ship below the margin line- (a) the machinery space as defined in paragraph 6(11); (b) the portion forward of the machinery space; and (c) the portion abaft the machinery space.(2) (a) For steamships the uniform average permeability throughout the machinery space shall be determined from the formula- ﹛ a-c ﹜ 80 + 12.5 ____ where v a = volume of the passenger spaces, as defined in paragraph 6(12) which are situated below the margin line within the limits of the machinery space. c = volume of between deck spaces below the margin line within the limits of the machinery space which are appropriated to cargo, coal or stores. v = whole volume of the machinery space below the margin line. (b) For ships propelled by internal combustion engines, the uniform average permeability shall be taken as 5 greater than that given by the above formula. (c) Where it is shown to the satisfaction of the Principal Surveyor of Ships that the average permeability of the machinery space, as determined by detailed calculation, is less than that given by the formula, the calculated value may be substituted. For the purposes of such calculation, the permeabilities of passenger spaces, as defined in paragraph 6(12), shall be taken as 95, that of all cargo, coal and store spaces as 60, and that of double bottom, oil fuel and other tanks at such values as may be approved in each case by the Principal Surveyor of Ships.(3) The uniform average permeability throughout the portion of the ship before (or abaft) the machinery space shall be determined from the formula- a63 + 35 ____ where va = volume of the passenger spaces, as defined in paragraph 6(12) which are situated below the margin line, before (or abaft) the machinery space, and v = whole volume of the portion of the ship below the margin line before (or abaft) the machinery space. (4) If a between deck compartment between two watertight transverse bulkheads contains any passenger or crew space, the whole of that compartment, less any space completely enclosed within permanent steel bulkheads and appropriated to other purposes, shall be regarded as passenger space. If, however, the passenger or crew space in question is completely enclosed within permanent steel bulkheads, only the space so enclosed need be considered as passenger space. Cap 369C reg 10 Permissible length of compartments (1) Permissible Length: The maximum permissible length of a compartment having its centre at any point in the ship's length is obtained from the floodable length by multiplying the latter by an appropriate factor called the factor of subdivision. (2) Factor of Subdivision: The factor of subdivision shall depend on the length of the ship, and for a given length shall vary according to the nature of the service for which the ship is intended. It shall decrease in a regular and continuous manner- (a) as the length of the ship increases; and (b) from a factor A, applicable to ships primarily engaged in the carriage of cargo, to a factor B, applicable to ships primarily engaged in the carriage of passengers.The variations of the factors A and B respectively shall be expressed by the following formulae- 190 A = ______________ + 18 (L = 430 and upwards) .................................................. (i) L - 198 100 B = ______________ + 18 (L = 260 and upwards) .................................................. (ii) L - 138where L is the length of the ship, as defined in paragraph 6(2). ___________________________________________________________________ Note: In consequence of this paragraph the diagram Plate I in Volume II of the "Instructions as to the Survey of Passenger Steamships" (published by the Ministry of Shipping, London) is cancelled. Cap 369C reg 11 Criterion of service (1) For a ship of given length the appropriate factor of subdivision shall be determined by the Criterion of Service Numeral (hereinafter called the Criterion Numeral) as given by the following formulae where- Cs = the Criterion Numeral; L = length of the ship, as defined in paragraph 6(2); M = the volume of the machinery space, as defined in paragraph 6(11); with the addition thereto of the volume of any permanent oil fuel bunkers which may be situated above the inner bottom and before (or abaft) the machinery space; |
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