RULE 304. At any hatch, if work is to be carried on simultaneously in the upper and lower holds, the open end of the hatch in the higher deck shall be protected by nets or by some other equally suitable means to prevent the fall of persons or cargo.

When working half a hatch a safety net shall be provided where necessary to prevent cargo or employees falling from a height. (See also Rule 318).

When a fork lift is operating in the tween deck with part of the tween deck hatch off, a tight wire, chain or suitable obstruction shall be placed alongside the open portion of such hatch