Harbour launch

The harbour launch was a type of small launch used by the Royal Navy for general duties around Royal Naval dockyards and sea ports. The first were built in the 1850s with the advent of the steam engine and were originally designated harbour service launches. From the 1890s to the 1960s they were built to the same common design, first with steam engines and later with diesel engines, by small yards contracted locally by dockyards and bases. In 1942, following the introduction of the Type Two 63 ft HSL by the Royal Air Force, Admiralty Fleet Order 1518 re-designated the harbour service launch as "harbour launch (steam)" or "harbour launch (diesel)", depending on the type of engine.[1][2]

A harbour launch (diesel) of HMS Malabar at the Royal Naval Dockyard, Bermuda ca 1988
Class overview
Operators:  Royal Navy
Built: 1850s-1968
In commission: 1850s-1990s
General characteristics HL(S) and HL(D)
Type: Harbour launch
Displacement: 24.6 t
Length: 56ft
Beam: 13ft 6in
Draught: 5ft 5in
Propulsion: Steam engine or diesel engine
Speed: 9.5 kn (17.6 km/h)
Range: 230 Miles

Vlet

A "Vlet" is a non-military motor launch, popular in Holland, that somewhat similar to a harbour launch. "Vlet" is a Dutch term for a motor cruiser, usually built of steel and with a fixed wheelhouse, and often capable of some inshore navigation.

References

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