At Burry Port RNLI we currently operate two types of tractors. We have the county (TW44) which launches our Atlantic 75 with the use of a "Drive On - Drive Off" (DO - DO) carriage.
Launching our D-class we use a tracked vehicle known as a ToolTrak (TT16) and that also utalises a DO - DO type of trailer.
TootTrak Launching D-class
ToolTrak Recovering D-class
The RNLI Tooltrak is a compact rubber tracked crawler based tool carrier for use in marine environments for the launch and recovery of lifeboats and other craft. It is designed for operating on extremely soft ground conditions such as estuary mud or sand, or on shingle beaches. The machine is capable of wading to a depth of 0.65m and is able to withstand momentary swamping by wave action (0.65m) front the front or rear without the engine stalling or the windscreens being damaged. In the event of water ingress the Tooltrak is fitted with an automatic bilge pump mounted within the vehicle sump.
Engine: Lombardini 4 cylinder turbo diesel, Capacity 2199CC
Transmission: Fully hydrostatic with servo operated pumps and single speed track motors.
Above referenced from Loglogic.co.uk
PDF of ToolTrak full spec HERE
County Tractor Pushing A85 DO-DO Trailer
County Launching Atlantic 85
Talus MB-764 County Tractor (TW44)
Unlike other tractors in the Talus range this vehicle is a modification of a commercial tractor design. The modifications carried out allow the tractor to wade safely to a depth of 1.5m in calm water. This was the first vehicle design that the Company sold to the RNLI, following the development of two Prototype machines, the second of which was equipped with a propeller and fully amphibious.
The Talus MB-764 tractor is a marinised form of the County tractor, which has been in service with the RNLI since 1975. A total fleet of 30 tractors are operated by the RNLI. The basic operating and performance characteristics are little changed from the base vehicle, with the exception of the wading capability.
Above referenced from claytonengineering.co.uk