High-speed launch

A high-speed launch (HSL) is a type of military boat typically used for air-sea rescue operations.

The British Royal Air Force (RAF) and others used HSLs especially during World War II.

The 64 ft. high-speed, air/sea rescue launch built by British Power Boat Company (BPBC) was one of the earliest high-speed offshore rescue vessel used by the Royal Air Force.

[2] Later designs included the 1941 Type Two 63 ft HSL "Whaleback", an adaptation of a motor anti-submarine boat, the first HSL to include gun turrets.

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