Nautical Term: Rider plates
Definition of Rider plates
Rider plates refer to the flat, horizontal metal plates that are placed on top of the center keelson (if present) to serve as the base or foundation for the pillars or masts to rest on.
For instance, in the context of a sailing ship, the mast or pillar would be secured to the rider plates to ensure the structural integrity of the mast and the entire ship.
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