Type | Nominal Size | Opening Model | Storm Cover | Application |
Heavy Type | ∅200mm | Right & Left Opening, Joint hinged | Hook type,Pawl type | Water tight and gas tight requirements,above full load water line ,below freeboard. |
∅250mm | ||||
∅300mm | ||||
∅350mm | ||||
∅400mm | ||||
Medium Type & Light Type | ∅200mm | Above freeboard,first deck. | ||
∅250mm | ||||
∅300mm | ||||
∅350mm | Right & Left Opening | - | Above freeboard for passenger ships. | |
∅400mm | ||||
∅450mm |