A bulkhead light is a light fixture whose shape looks like a ship’s porthole.
They are made of brass or bronze and feature a heavy and thick glass to protect the lamp, which is enclosed by a wire or solid brass mesh.
The light fixture is waterproof and can be mounted on the wall or ceiling.
In Mediterranean countries, it is also known as a turtle light (helona).
In the old days, this light fixture was used to illuminate ship decks.
Today, it is used for the decoration of the outdoor areas of a house, or for storerooms and other areas.
Bulkhead A general term that has dozens of different meanings, depending on the environment.