【法规名称】
【法规编号】 58774 什么是编号？
【正 文】
第5页 CAP 369AT MERCHANT SHIPPING (SAFETY) (SUBDIVISION AND DAMAGE STABILITY OF CARGO SHIPS) REGULATION
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[接上页] PART IV CALCULATION OF FACTOR "si" 1. The factor "si" shall be determined for each compartment or group of compartments according to the following- 1.1 In general for any condition of flooding from any initial loading condition "s" shall be- s = C [0.5(GZmax)(range)]2 with- C = 1, if θe≦25°; C = 0, if θe>30°; C = (30 - θe)/5, otherwise; GZmax = maximum positive righting lever (in metres) within the range as given below but not more than 0.1 m;range = range of positive righting levers beyond the angle of equilibrium (in degrees) but not more than 20°, however the range shall be terminated at the angle where openings not capable of being closed weathertight are immersed;θe = final equilibrium angle of heel (in degrees). 1.2 s = 0, where the final waterline taking into account sinkage, heel and trim, immerses the lower edge of openings through which progressive flooding may take place. Such openings shall include air-pipes, ventilators, and openings which are closed by means of weathertight doors or hatch covers, and may exclude those openings closed by means of watertight manhole covers and flush scuttles, small watertight hatch covers which maintain the high integrity of the deck, remotely operated sliding watertight doors, access doors, and access hatch covers, of watertight integrity, normally closed at sea and sidescuttles of the non-opening type. However, if the compartments so flooded are taken into account in the calculations the requirements of this Part shall be applied. 1.3 For each compartment or group of compartments "si" shall be weighted according to draught considerations as follows- si = 0.5s1 + 0.5sp where- s1 is the "s" factor at the deepest subdivision load line; "sp" is the "s" factor at the partial load line. 2. For all compartments forward of the collision bulkhead, the "s" value, calculated assuming the ship to be at its deepest subdivision load line and with assumed unlimited vertical extent of damage, is to be equal to 1. 3. Wherever a horizontal subdivision is fitted above the waterline in question the following applies. 3.1 The "s" value for the lower compartment or group of compartments shall be obtained by multiplying the value as determined in paragraph 1.1 by the reduction factor "v" according to paragraph 3.3, which represents the probability that the spaces above the horizontal subdivision will not be flooded. 3.2 In cases of positive contribution to index "A" due to simultaneous flooding of the spaces above the horizontal subdivision, the resulting "s" value for such a compartment or group of compartments shall be obtained by an increase of the value as determined by paragraph 3.1 by the "s" value for simultaneous flooding according to paragraph 1.1, multiplied by the factor (1 - v). 3.3 The probability factor "vi" shall be calculated according to- vi = (H - d)/(Hmax - d) for the assumed flooding up to the horizontal subdivision above the subdivision load line, where "H" is to be restricted to a height of "Hmax"; vi = 1, if the uppermost horizontal subdivision in way of the assumed damaged region is below "Hmax", where- H is the height of the horizontal subdivision above the baseline (in metres) which is assumed to limit the vertical extent of damage; Hmax is the maximum possible vertical extent of damage above the baseline (in metres); or Hmax = d + 0.056Ls(1 - Ls/500), if Ls≦250 m;Hmax = d + 7, if Ls>250 m,whichever is less. PART V PERMEABILITY For the purpose of the subdivision and damage stability calculations of this Regulation, the permeability of each space or part of a space shall be as follows- Space Permeability Appropriated to stores 0.60 Occupied by accommodation 0.95 Occupied by machinery 0.85 Void spaces 0.95 Dry cargo spaces 0.70 Intended for liquid 0 or 0.95** whichever results in the more severe requirements. |
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