D class lifeboat
Encyclopedia
The D class lifeboat EA16 is a class of inflatable boat
Inflatable boat
An inflatable boat is a lightweight boat constructed with its sides and bow made of flexible tubes containing pressurised gas. For smaller boats, the floor and hull beneath it is often flexible. On boats longer than , the floor often consists of three to five rigid plywood or aluminium sheets fixed...
formally operated by the Royal National Lifeboat Institution
Royal National Lifeboat Institution
The Royal National Lifeboat Institution is a charity that saves lives at sea around the coasts of Great Britain, Ireland, the Channel Islands and the Isle of Man, as well as on selected inland waterways....
of the United Kingdom
United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...
and Ireland
Ireland
Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...
. It has been replace by the D class lifeboat (IB1)
Utilization
For more than 40 years the D-class has served as the workhorse of the RNLI Inshore LifeboatLifeboat (rescue)
A rescue lifeboat is a boat rescue craft which is used to attend a vessel in distress, or its survivors, to rescue crewmen and passengers. It can be hand pulled, sail powered or powered by an engine...
(ILB) fleet. Significantly smaller in comparison to the rest of the inshore fleet, the D-class is also one of the few RNLI types not to feature a rigid hull. The main aspect of the boat would be both its size and weight - only 436 kg (961.2 lb). The D-class has been specifically designed as a light and highly manoeuvrable rapid response craft.
Design and construction
The D-class lifeboat consists of two sponsonSponson
Sponsons are projections from the sides of a watercraft, for protection, stability, or the mounting of equipment such as armaments or lifeboats, etc...
s, together housing seven inflatable segments intersected by baffles. The main construction fabric is Hypalon
Hypalon
Hypalon is a trademark for chlorosulfonated polyethylene synthetic rubber noted for its resistance to chemicals, temperature extremes, and ultraviolet light. It was a product of DuPont Performance Elastomers, a subsidiary of DuPont....
-coated Nylon
Nylon
Nylon is a generic designation for a family of synthetic polymers known generically as polyamides, first produced on February 28, 1935, by Wallace Carothers at DuPont's research facility at the DuPont Experimental Station...
which provides a durable, non-tear surface.
This is one of the smaller classes of lifeboat operated by the RNLI, and they are a common sight at lifeboat stations around the coast. Unlike other members of the ILB fleet, the D-class does not have a rigid hull; all others, with the exception of the Arancia, hovercraft and ALB Tenders, are Rigid Inflatable Boats (RIBs).
The D-class normally has a crew of three or four 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 pagers going off.
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