Deck: The flat surface upon which the fence, rail and furniture rest.
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Fence: The flat panels that surround the playpen.
Gate: The swinging door through which you enter the pontoon boat’s deck.
Log: A single pontoon tube. Synonymous with tube.
Lounger: A cushioned seat that you can also lie down on.
Motor Pod: An aft extension of the pontoon boat’s substructure meant to improve performance and support a larger outboard.
Playpen: The area on deck inside the fence.
Pontoon: Specifically, pontoon refers to the tubular structures under the deck that the boat floats on top of. More generally, it can refer to the entire boat.
Rails: The framework that supports the fence.
Substructure: The structure that supports the deck, like joists in a floor.
Tube: A single pontoon tube. Synonymous with log. Some pontoons have two tubes, some have three.
Underskin: A flat covering on the underside of a pontoon boat to protect the substructure and improve performance.
Read on for general boat terms every boater should know.