Regulation 17

Hinged covers of hatchways, manholes and other openings shall be protected against accidental closing. In particular, heavy covers on escape hatches shall be equipped with counterweights, and so constructed as to be capable of being opened from either side of the cover. (2) In every new ship the dimensions of access hatches shall not be less than 600 millimetres by 600 millimetres or 610 millimetres by 280 millimetres or 600 millimetres diameter. (3) Hand-holds shall be provided over escape openings. (4) Skylights or other similar openings shall be fitted with protective bars spaced not more than 350 millimetres apart. (5) The surface of all decks shall be so designed or treated as to minimise the possibility of personnel slipping. In particular, decks of working areas such as in machinery spaces, galleys, at winches and at the foot and head of ladders and in front of doors, shall be provided with anti-skid surfaces.