A hatch cover (1) comprising a cover body (17) and a circumferential skirt (4) depending from the cover body (17). The skirt (4) is provided with a support portion (8) for supporting the hatch cover (1) on a hatch coaming (2) of a ship and the support portion (8) is provided with a central elongate groove (9). A resilient lower sealing member (10) is provided in the central elongate groove (9) such that it protrudes out of said groove (9) for sealing against the hatch coaming (2). The lower sealing member (10) is configured such that it is deformable into the central elongate groove (9) upon pressing together of hatch cover (1) and ship at normal use. A plurality of stiffening bodies (18) is provided on the inside of the cover body (17). The cover body (17), the skirt (4) and the stiffening bodies (18) are made from fiber-reinforced plastics.
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