(1) Where air pipes to tanks and void spaces below
deck extend above the working or the superstructure decks, the exposed
parts of the pipes shall be of strength equivalent to the adjacent
structures and fitted with appropriate protection. Openings of air
pipes shall be provided with means of closing, permanently attached
to the pipe or adjacent structure.
(2) The height of air pipes above deck to the
point where water may have access below shall be at least 760 mm on
the working deck and at least 450 mm on the superstructure deck. The
Administration may accept reduction of the height of an air pipe to
avoid interference with the fishing operations.