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D-class lifeboat (IB1)

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D-Class IB1
Introduced: 2004
General Characteristics
Length: 4.9m
Beam: 2m
Displacement: 338kg
Construction: FRC with Hypalon coated polyester collar
Engines: 50hp Mariner Outboard
Speed: 25 knots
Endurance: 3 hours at top speed
Crew: 3 or 4
IB1 Class Lifeboat

IB1 class lifeboats serve the shores of the UK as a part of the RNLI Inshore Lifeboat (ILB) Fleet, although they are known as the IB1 at times they are the successor to the D class lifeboat and as such are mainly called the D-Class also.

This class of lifeboat is one of the smallest operated by the RNLI, and they are becoming a common sight at Lifeboat Stations round the coast. Unlike other members of the ILB fleet the IB1 (D-class) does not have a rigid hull, all others with the exception of the Arancia, hovercraft & ALB Tenders are Rigid Inflatable Boats or RIBs.

The IB1 normally has a crew of three or 4 and is primarily used for surfer/swimmer incidents as well as assisting in cliff incidents where the casualty is near the water. The very nature of its work requires a swift response, and the D-class can normally be afloat within five minutes of the `bleepers` going off..


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Classes of Royal National Lifeboat Institution lifeboats
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All-weather lifeboats
Inshore lifeboats
Small inflatables
Historic lifeboats
Pulling and sailing lifeboats
All-weather motor lifeboats
Up to 10 knots
Above 10 knots
Inshore lifeboats
Experimental lifeboats
Royal National Lifeboat Institution


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