Berthon Boat

Berthon Boats are collapsible lifeboats used in the late 19th and early 20th centuries. They have double linings of canvas, sectioned into watertight envelopes that assist buoyancy and give protection from the possibility that the outer canvas could be accidentally torn. The canvas was also coated with "linseed oil, soft soap, and yellow ochre" to make it waterproof.

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