Hatch covers provide a primary structural and weathertight barrier to prevent water ingress into
cargo holds. Rigorous inspection, regular maintenance and prompt repair of damaged covers
securings and supports are essential to maintain fitness for purpose and, in particular:
•to maintain sufficient strength to resist green seas landing on hatches in extreme weather;
•to maintain a barrier against ingress of water during normal seagoing weather conditions.
Failure to maintain hatch covers correctly can lead to physical loss of a cover in extreme weather
and hold flooding and possible foundering. Minor leakage can cause cargo damage and, if over a
prolonged period, damage to the ship’s internal structure. Long-term structural decline can lead to
structural collapse and total loss