A collective term for primary supporting structural members.

Deck girder – A continuous stiffening member which runs fore and aft along a ship to support the deck.

Double bottom girder – A longitudinal, vertical plate extending from the bottom shell to the inner bottom, usually with large holes for access and weight saving.

Hull girder – The components of a hull structure that contribute to its strength when subjected to longitudinal and/or transverse bending e.g. the shell plating, decks, inner bottom, longitudinals, bulkheads and girders.

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