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[接上页] (d) No provision. (e) In every ship to which this Part applies, each sidescuttle below the margin line shall be fitted with an efficiently hinged deadlight permanently attached so that it can be readily and effectively closed and secured watertight. (f) In every ship to which this Part applies, a sidescuttle shall not be fitted below the margin line to any space appropriated solely for the carriage of cargo or coal. If sidescuttles are fitted below the margin line to spaces appropriated to carry either cargo or passengers, such sidescuttles and their deadlights shall be fitted with approved locking arrangements.(4) Automatic ventilating sidescuttles shall not be fitted below the margin line in the shell of any ship to which this Part applies. Inlets and discharges (5) (a) In every ship each inlet and discharge led through the shell below the margin line shall be fitted with efficient and readily accessible means for preventing the accidental admission of water into the ship. Lead or other heat-sensitive materials shall not be used for pipes fitted outboard of shell valves in inlets or discharges or in any other place where the deterioration of such pipes in the event of fire would give rise to the danger of flooding. (b) Each discharge led through the shell from any space below the margin line, not being a discharge in connection with machinery, shall be provided with either - (i) one automatic non-return valve fitted at the shell of the ship and having positive means of closure from a position or positions above the bulkhead deck or, in a ship which is marked with a summer load line, from a position or positions above the freeboard deck, whichever is the higher. Such positions shall be readily accessible at all times under service conditions and the means of closure shall be provided in either case with an indicator showing whether the valve is open or closed; or (ii) 2 automatic non-return valves having no positive means of closure in any ship which is marked with a summer load line and in which the vertical distance from the summer load waterline to the inboard end of the discharge pipe exceeds .01L, (where L is the length of the ship as defined in the Merchant Shipping (Safety) (Load Lines) (Length of Ship) Regulations (Cap 369 sub.leg.)) and in any ship which is not marked with a summer load line. One such valve shall be situated as close to the ship's shell as practicable and substantially connected thereto and the inboard valve shall be situated above the deepest load waterline and in a position such that it will at all times under service conditions be readily accessible for examination.(c) In every ship to which these regulations apply and which is marked with a summer load line every discharge led through the shell below the margin line from any space above the margin line, being a space below the freeboard deck or from within any enclosed superstructure or from within any deckhouse on the freeboard deck which is fitted with weathertight doors, not being a discharge in connection with machinery, shall be fitted with either- (i) one automatic non-return valve fitted in compliance with the requirements of subparagraph (b)(i); or (ii) 2 automatic non-return valves fitted in compliance w |