The Navy currently operates four relatively small fleets of vessels for important tasks such as offshore resource protection, border security, hydrographic and oceanographic environmental assessments and clearing sea mines. This significantly increases whole-of-life ownership costs and personnel overheads. Smaller vessels also have less seagoing capacity and a reduced scope for installing more capable sensor or weapons systems over time.
9.20 The Government has therefore decided that Defence will develop proposals to rationalise the Navy's patrol boat, mine counter measures, hydrographic and oceanographic forces into a single modular multirole class of around 20 Offshore Combatant Vessels combining four existing classes of vessels. This has the potential to provide significant operational efficiencies and potential savings. The new vessels will be larger than the current Armidale class patrol boats, with an anticipated displacement of up to 2,000 tonnes.
9.21 This concept relies on the use of modular unmanned underwater systems for both mine countermeasures and hydrographic tasks. These systems are envisaged to be containerised and portable modules capable of being used in any port or loaded onto any of the Offshore Combatant Vessels or other suitable vessels.
9.22 The future Offshore Combatant Vessel will be able to undertake offshore and littoral warfighting roles, border protection tasks, long-range counter-terrorism and counter-piracy operations, support to special forces, and missions in support of security and stability in the immediate neighbourhood. Defence will examine the potential for these new ships to embark a helicopter or UAV, to allow a surge in surveillance and response capabilities without the need to deploy additional ships. This increased capability will also ensure that major surface combatants are free for more demanding operations.