Australian Defence Vessel (ADV) Reliant, is a Norwegian-built Offshore Support Vessel (OSV) launched in Norway in 2017. Reliant arrived in Sydney on 04 July 2022 and underwent numerous trials and preparations. On 30 August 2022, Navy accepted ADV Reliant into service, as a Naval Auxiliary Vessel in her home port of Brisbane.

ADV Reliant has the range, endurance and equipment to undertake a diverse range of activities. It is able to support specialist multi-agency teams across numerous roles, to contribute to a collective safe, secure and resilient region; enabling Australia to be a more responsive and effective partner. It can respond to Pacific Nation’s needs and priorities while remaining equipped and prepared for humanitarian aid and disaster relief (HADR) missions. While the ship is managed through Navy, it remains a Whole-of-Government asset contributing to regional support and assistance, search and rescue, maritime surveillance, training, mentoring and capacity building.

With its pre-existing capabilities from build to the additional landing craft and jet-boats installed upon acceptance, and the numerous other capabilities and systems being considered for the future, ADV Reliant will continue to remain agile and responsive to the Government of Australia, ADF and Pacific Nations.

The ship is crewed through a combination of a Naval Liaison Officers (NLO) and Contracted Vessel Operators (CVO). The current CVO is Teekay Shipping, engaged to crew, operate and maintain the vessel.


Type Auxiliary Naval Vessel
Role Pacific support vessel
International callsign VMNC
Home port HMAS Moreton
Builder Kleven Verft AS, Norway
Launched 30 August 2022
Displacement 9360 tonnes
Length 103 metres
Beam 20 metres
Draught 6.50 metres
Speed 13.1 knots (top speed)
Range 36,206 nautical miles (9.0 knots)
Crew 22
  • 4 x Caterpillar Generator (2230eKW)
  • 1 x Harbour Generator (550eKW)
  • 2 x 2200kw Azimuth Thruster (Aquamaster US255FB)
  • 1 x 880kw Azimuth Thruster Drop Down (UL 1201)
  • 2 x 925kw Bow Thruster (TT2000)


Auxiliary naval vessel