2021. Hydrographic survey Leeuwin class Two Leeuwin-class survey ships were built for the RAN by NQEA of Cairns. Ordered in 1996, the ships were commissioned in a joint ceremony in 2000. They are capable of charting waters up to deep, and carry three Fantome-class survey boats for shallow-water work. In addition to hydrographic surveying duties, since 2001 both vessels have also operated in support of the RAN patrol force. Paluma class The Paluma-class survey motor launches are large catamarans designed for survey operations around northern and eastern Australia. Four ships were built by Eglo Engineering at Port Adelaide, South Australia between 1988 and 1990. The vessels normally operate in pairs. Non-commissioned vessels Young Endeavour The Sail Training Ship Young Endeavour was built as a gift from the United Kingdom to Australia for the latter's 1988 bicentenary of colonisation. Built by British shipbuilder Brooke Marine, the brigantine rig vessel is operated by the RAN, but is used to facilitate the Young Endeavour Youth Scheme; a sail training program for Australian youth aged between 16 and 23. A 10-strong RAN crew is supplemented by 24–30 youth on ten-day voyages, with 500 applicants selected every year through two ballots. Cape class Eight Cape-class patrol boats were built for the Australian Customs and Border Protection Service (now the Australian Border Force) by Austal between 2012 and 2015, as replacements for the Bay class. Following the loss of and hull issues with the Armidale'' class requiring an intense remedial maintenance program, two Cape-class patrol boats were leased to the RAN from late 2015 until the end of 2016. In naval service, the two rotating crew groups for each of the two vessel are made up of RAN personnel, the patrol boats operate from , and are identified with the Australian Defence Vessel (ADV) prefix, but retain the blue-and-red customs colour scheme. 2 new boats were ordered on 2017 and the 2 leased were returned to the ABF. National Support Squadron In addition to commissioned ships, the RAN is supported by the National Support Squadron which is made up of vessels operated by Teekay Shipping Australia and crewed mainly by civilian mariners. The force comprises: MV Besant (Submarine support) MV Mercator (Navigational training vessel) MV Sycamore (Aviation training vessel) MV Stoker (Submarine support) ADV Ocean Protector (Border protection) ADV Reliant (Pacific support vessel) See also List of Defence Maritime Services vessels List of Royal Australian Navy