Wartime boats became ferries, yachts, and homes

Were wartime motor boats sold for civilian use after their naval service?

Yes; many became ferries, pleasure craft, or houseboats, and the surviving Steam Gun Boat Grey Goose was living a civilian afterlife as a houseboat.

A substantial number of surplus boats passed into civilian hands. Owners converted them into ferries, pleasure craft, and houseboats rather than retaining their wartime equipment. Grey Goose survived as a houseboat, while MTB 219 became the subject of restoration hopes. Their afterlives show how preservation can depend on decades of adaptive reuse before a craft becomes recognized as naval heritage.