bridgedecks

Bridgedecks are decks in a ship’s superstructure that lie directly above the main deck and form the floor of the navigation area. In many vessels the bridgedeck is the level that carries the bridge and adjacent rooms, and may be a distinct deck or an upper extension of the superstructure.

Function and design: The bridgedeck raises the bridge to improve visibility and protects the bridge from weather and spray. It helps define the vessel's watertight envelope and can contribute structural stiffness to the forward superstructure. The space on and around the bridgedeck commonly houses navigation equipment, chart rooms, radio, and sometimes crew or officer accommodations.

Construction considerations: Bridgedecks are typically fabricated as part of the vessel’s steel or aluminum superstructure. They must be designed to carry the weight of the bridge, equipment, and personnel, while maintaining weatherproofing and fire safety between compartments. Seals, window arrangements, and doors are chosen to balance visibility with protection from the elements and flooding.

Variations and use: On modern ships the bridgedeck often serves to separate the bridge from the lower decks, aiding stability and survivability in heavy seas. In larger yachts and passenger vessels, a bridgedeck may form part of a raised observation deck or wheelhouse and can also accommodate crew access to the bridge.

See also: Deck (ship), Bridge (nautical).