The USCG has designed and built new aluminum 47 foot lifeboats, with Textron Marine and Land Systems awarded the contract to design and build the US model, which was delivered in 1990. After 2 years of testing and evaluation, 5 more were built between 1992 and 1994 incorporating improvements from the prototype model for further testing and evaluation around the country. The first production boat was delivered to the USCG in 1997.
The 47 MLB is the most sophisticated MLB ever built, able to withstand impacts of three times the acceleration of gravity, she can survive a complete roll-over, self-righting in less than 10 seconds with all machinery remaining fully operational. Powered by twin Detroit Diesels producing 435 hp (324 kW) each, the 47 MLB can travel at 25 knots (46 km/h) to reach her destination.
There are currently 117 operational with a total of 200 scheduled to be delivered to the USCG. A further 27 models are being built by MetalCraft Marine under license to the Canadian Coast Guard.
In Britain, the RNLI design and build several types of all-weather motor lifeboats, the Arun class kept permanently afloat, the Tyne class slipway-launched boat and the Mersey class carriage-launched boat. More recently the Arun replacement Trent and Severn class prototype models were delivered in 1992 with the first production Trent arriving in 1994 and the Severn in 1996. The first production Tamar class, replacement for the Tyne went into service in December 2005 and the FCB2 class replacement for the Mersey is being developed for deployment in 2007.
In Germany, the DGzRS (Deutsche Gesellschaft zur Rettung Schiffbrüchiger) has provided naval rescue service since 1865. It is a civilian, non-profit organisation and has a wide variety of boats and ships, the biggest being the 46 meter (150 ft) SK Hermann Marwede. The DGzRS operates from 54 stations in the North Sea and the Baltic Sea. It has 20 rescue cruisers (usually piggybaging a smaller rescue boat) and 41 rescue boats.