An airtight chamber, open at the bottom, that is lowered on a cable underwater to operate as a base or a means of transport for a diver or a small number of divers
A diving bell is a container shaped like a bell, in which people can breathe air while they work under water. A large vessel for underwater work, open on the bottom and supplied with air under pressure. a metal container that is open at the bottom and filled with air under pressure, in which people can work under water