The first of the Atlantic 21s, and the forerunner of all rigid inflatables now widely used for commercial and leisure purposes.

Developed at Atlantic College and using a rigid buoyant floor surrounded by a continuous inflatable tube.

Type Atlantic 21 Built 1970 Length 21ft Stationed at Relief.

Part of the history of inshore lifeboats. B501 will join 8500 shortly, having been converted to a 'playboat' which children can enjoy in Safety. IBSIS. illustrated, is a temporary exhibit drawn from the Relief Fleet).