HMAS Cape Spencer is an Evolved Cape Class patrol boat of the Royal Australian Navy. The vessel contributes to maritime security, surveillance and patrol operations in support of Australia's national interests.

Cape Spencer supports whole-of-government maritime security efforts. Working alongside Australian Border Force and other government agencies, the vessel helps protect of Australia's borders and offshore interests. This work includes surveillance, monitoring and response activities at sea.

Identity

HMAS Cape Spencer is named after Cape Spencer, located at the entrance to Spencer Gulf in South Australia. The name follows Navy's tradition of naming Cape Class patrol boats after Australian capes and coastal landmarks.

Service

The Royal Australian Navy accepted Cape Spencer after its construction at Austal's shipyard in Henderson, Western Australia. The vessel was the ninth Evolved Cape Class patrol boat delivered under Project SEA1445 Phase 1.

Cape Spencer commissioned on 27 August 2026.

Specifications

• Pennant number: 225
• Home port: HMAS Cairns
• Builder: Austal Ships, Fremantle
• Length: 58.1 metres
• Beam: 10.6 metres
• Draught: 3.1 metres
• Speed: 26 knots (top speed)
• Range: 4,000 nautical miles (12 knots)
• Crew: 25
• Machinery:
  • 2 Caterpillar 3516C diesels
  • 2 shafts
  • 1 bow thruster
• Horsepower: 6,770 (4.97 megawatts)
• Armament: two 12.7 mm machine guns