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.