CFR /  Title 46  /  Part 45  /  Sec. 45.127 Position of structures, openings, and fittings.

For the purposes of this part--

(a) Position 1 means in an exposed position on--

(1) The freeboard deck or a raised quarter deck;

(2) A superstructure deck or a trunk deck and forward of a point \1/4\ L from the forward perpendicular; or

(3) A trunk deck whose height is less than Hs.

(b) Position 2 means--

(1) On a superstructure deck aft of a point \1/4\ L abaft the forward perpendicular; or

(2) On a superstructure and trunk combination, that is Hs or more n height, aft or a point \1/4\ L abaft the forward perpendicular.