256 SOCIETY NAVAL ARCHITECTS AND MARINE ENGINEERS. 



side shall be reduced to the minimum, either by making each discharge serve for as many as 

 possible of the sanitary and other pipes or in any other satisfactory manner. 



(8) Discharges led through the vessel's skin from spaces below the margin line shall 

 be fitted with efficient and accessible means for preventing water from passing inwards. It 

 is pennissible to have either one valve, fitted with a means of working it at a distance, or 

 two valves without such gear, one of these valves being always accessible. In either case, 

 the accessibility of the valves or of the means of working shall be assured by their being 

 situated above the deck referred to in paragraph (1) (a) of this Article. 



(9) In no case shall gangway, cargo, and coaling ports be fitted below the load water 

 line. None of these ports shall be fitted, even toward the ends of the vessel, in a space 

 below the lowest 'tween deck space in the amidship region of which it is permissible to fit 

 such ports. 



(10) Gangway, cargo, and coaling port in the vessel's side below the margin Hne shall 

 be efliectively closed and made secure before the vessel leaves port, and kept closed during 

 navigation. 



(11) The inboard openings of ash shoo s, rubbish shoots, etc., shall not be lower than 

 the deck referred to in paragraph (1) (a) of this Article. They may be permitted above 

 this deck if fitted, to the satisfaction of the Administration, with covers, which shall be 

 watertight if below the margin line. Such covers shall be so arranged as to prevent their 

 being clogged in any way, and shall be at least as easily and effectively closed as watertight 

 doors and side scuttles. 



Article XVII. 



CONSTRUCTION AND TESTS OF WATERTIGHT DOORS, SIDE SCUTTLES, ETC. 



(1) The design and the materials used in the construction of watertight doors, side 

 scuttles, gangway, coaling and cargo ports, valves, pipes, ash and rubbish shoots shall be to 

 the satisfaction of the Administration." 



(2) Watertight doors shall be tested by a water pressure equal to that prescribed for 

 the bulkhead where the doors are located. The test shall be made before the vessel is put 

 in service, and either before or after the door is fitted. 



Article XVIII. 



CONSTRUCTION AND INITIAL TESTS OF WATERTIGHT DECKS, TRUNKS, ETC. 



(1 ) Watertight decks, trunks, and ventila ors shall be of the same strength as the water- 

 tight bulkhead at the place where they occur. The means used for making them watertight 

 and the arrangements adopted for closing the openings in them shall be to the satisfaction 

 of the Administration. If watertight covers are used for closing these openings, they shall 

 be fitted before the vessel leaves port, and kept closed during navigation. 



(2) After completion a hose or floodi ig test shall be apphed to watertight decks 

 and a hose test to watertight trunks. Watertight ventilators and trunks shall be carried at 

 least up to the margin line. 



(3) No change shall be made in the structure of watertight decks, trunks and ventila- 

 tors after the survey without the permission of the Administration. 



