Solent-class lifeboat

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Builders
Operators
Preceded byWatson
SucceededbyTyne
Sea Guardian, formerly R. Hope Roberts (ON 1011) at Australian National Maritime Museum, 2015
Class overview
Builders
Operators
Preceded byWatson
Succeeded byTyne
Built1969–1973[1]
In service1969–2021
Completed11
Retired11
General characteristics
Typemotor lifeboat
Displacement27 tons
Length48 ft 6 in (14.78 m)
Beam14 ft (4.3 m)
Draught4 ft 8 in (1.42 m)
Propulsion2 x 110 bhp Gardner 6LX diesel engines
Speed9.5 knots (10.9 mph)
Range150 nautical miles (280 km)
Crew7

The Solent-class lifeboat is a steel-hulled version of the 48-foot-6-inch (14.78 m) Oakley-class self-righting lifeboat and is sometimes referred to as the 48-foot, 6-inch Oakley-class Mark III.[2] Solent Operational Numbers followed on from the first three 48-foot, 6-inch Oakleys and were interrupted by the last two Oakleys (48-12) and (48-13). The operational numbers of the Solent-class had three digits in the suffix to indicate a metal hull (as with Clyde, Waveney, Thames and Tyne classes, one Arun class and the first eleven Merseys). Two digits indicates a wooden, glass-reinforced plastic or fiber-reinforced composite hull.

The Solent was powered by twin 110 bhp Gardner 6LX diesel engines which gave the boat a top speed of 9.5 knots (17.6 km/h; 10.9 mph). There were twin spade rudders installed which were coupled to Mathway manual steering gear.[3]

Apart from the steel hull, the Solent-class differed from the Oakley-class in its self-righting mechanism. The Oakley used a water ballast system, while the Solent class was inherently self-righting as a result of its watertight superstructure. The Solent was the last class of traditional displacement-type lifeboats designed by the Royal National Lifeboat Institution.[2]

There were two versions of the Solent, unofficially known as "Mark I" and "Mark II". The "Mark I" boats have a vertical steering wheel. Sliding doors provide access to the forward end of the wheelhouse on each side. The "Mark II" boats have a seated steering position with hinged wheelhouse doors at the after end of the wheelhouse. These boats entered service in 1972.[2]

The first four Solent-class boats (ON 1007 – ON 1010) and the last three (ON 1019 - ON 1021) were built by Groves & Guttridge at Cowes. The second four (ON 1011 – ON 1014) were built by Camper & Nicholson at Gosport.[4]

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Notes

References

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