Small tugboats can be deployed for various activities ranging from the transfer of crew, over the tugging of pontoons, to the execution of survey activities. These vessels are usually standard designs built at specialised shipyards. They have a length up to 15m - 16 m, a propulsion power of up to 2 x 450 kW and reach speeds up to about 10 knots. In some cases faster tugboats are deployed for crew transfers or fur survey activities. These reach speeds up to 20 knots.