The Liverpool-class motorised lifeboat was a non-self-righting boat operated by the

Royal National Lifeboat Institution The Royal National Lifeboat Institution (RNLI) is the largest charity that saves lives at sea around the coasts of the United Kingdom, the Republic of Ireland, the Channel Islands, and the Isle of Man, as well as on some inland waterways. It i ...

(RNLI) from its stations around the coast of the

United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and North ...

and

Ireland Ireland ( ; ga, Éire ; Ulster Scots dialect, Ulster-Scots: ) is an island in the Atlantic Ocean, North Atlantic Ocean, in Northwestern Europe, north-western Europe. It is separated from Great Britain to its east by the North Channel (Grea ...

. The boats were designed for carriage launching and were developed from the Liverpool-Class Pulling and Sailing type of lifeboats - there were two types built, single and twin engined.

History

The Liverpool class, designed by James Barnett, was derived from the 35ft 6in Self-righting motor-class lifeboat and had many similarities with it. Lifeboatmen at many stations preferred non self-righting boats due to their better stability and the Liverpool class was designed to be light enough for carriage launching at these stations. The single-engined version entered service in 1932 and was powered by an RNLI designed, Weyburn Engineering built AE6 six-cylinder petrol engine mounted in a watertight compartment. Like all early motor lifeboats, the Liverpool class carried an auxiliary sailing rig and had a drop

keel The keel is the bottom-most longitudinal structural element on a vessel. On some sailboats, it may have a hydrodynamic and counterbalancing purpose, as well. As the laying down of the keel is the initial step in the construction of a ship, in Br ...

just forward of the engine room. 28 boats were built between 1931 and 1941. The introduction of tractors to assist with carriage launching enabled the RNLI to consider a heavier, twin-engined version of the Liverpool class and a prototype was ordered but was destroyed in an air raid at the builder's yard at

Cowes Cowes () is an English seaport town and civil parish on the Isle of Wight. Cowes is located on the west bank of the estuary of the River Medina, facing the smaller town of East Cowes on the east bank. The two towns are linked by the Cowes Floa ...

in May 1942. Production got underway early in 1945 and the boat was powered by two Weyburn AE4 four-cylinder petrol engines mounted in a watertight compartment. The extra redundancy of twin engines reduced the need for auxiliary sails. 31 boats were built between 1945 and 1954, the last 21 of which were powered by Ferry Kadenacy FKR3 diesels. The William Cantrell Ashley now July 2017 is in dry standing

Penarth Penarth (, ) is a town and Community (Wales), community in the Vale of Glamorgan ( cy, Bro Morgannwg), Wales, exactly south of Cardiff city centre on the west shore of the Severn Estuary at the southern end of Cardiff Bay. Penarth is a weal ...

marina,

Cardiff Cardiff (; cy, Caerdydd ) is the capital and largest city of Wales. It forms a principal area, officially known as the City and County of Cardiff ( cy, Dinas a Sir Caerdydd, links=no), and the city is the eleventh-largest in the United Kingd ...

Description

The Liverpool class was based on the Self-righting motor introduced in 1929, but had greater

beam Beam may refer to: Streams of particles or energy *Light beam, or beam of light, a directional projection of light energy **Laser beam *Particle beam, a stream of charged or neutral particles **Charged particle beam, a spatially localized grou ...

( rather than ) and much shallower endboxes. The shelter was extended forward to cover the engine compartment, which was watertight and allowed the engine to continue to operate as long as the air intake was not submerged. The single propeller was protected by the keel. The twin-engined variant was visually very similar but had more beam and the twin propellers were in protective tunnels. In the mid-1960s the petrol engines in the first ten boats were replaced by Parsons Penguin diesels (as were a couple of the Ferry engined boats). Only one single-engined boat, ON 832, was re-engined with a diesel engine, a Parsons Porbeagle of 47 hp.

History

Description

Fleet

Single screw boats

Twin screw boats

References

External links