Cape Fourcroy

Commanding Officer
Cape Class
Role Patrol Boat
International Callsign
Home Port
Austal Ships, Fremantle
Dimensions & Displacement
Length 58.1 metres
Beam 10.6 metres
Draught 3.1 metres
Speed 25 knots (top speed)
Range 4000 nautical miles (12 knots)
Crew 21
Machinery 2 x Caterpillar 3516C diesels; 2 shafts; 1 bow thruster
Horsepower 6770
Guns Two 12.7mm machine guns
News Articles
Image Gallery

Australian Defence Vessel (ADV) Cape Fourcroy and her sister ship ADV Cape Inscription are Cape Class Patrol Boats, and along with 13 sister Armidale Class Patrol Boats are Navy’s principal contribution to the nation’s fisheries protection, immigration, customs and drug law enforcement operations. The vessels work hand-in-hand with other Government agencies as part of the Australian Border Force. In the event of war they would be tasked to control the waters close to the Australian mainland.

ADV Cape Fourcroy is one of two Cape Class Patrol Boats introduced into service with the Royal Australian Navy to supplement the Armidale Class Patrol Boat capability.

ADV Cape Fourcroy has been seamlessly integrated into service as a result of the close working relationship between Navy and the Australian Border Force which also operates a fleet of the Cape Class Patrol Boats.

ADV Cape Fourcroy is manned by two crews, ‘Port’ and ‘Starboard’, with one crew embarked and one disembarked at any given time.

Most importantly, Patrols Boats are a primary enabler of the Australian Defence Force contribution to Operation SOVEREIGN BORDERS, which is a whole of government effort to protect Australia’s borders and offshore interests.

Our operations in association with Border Force, Australian Fisheries and Australian Federal Police protect against unauthorised entry, breaches of customs, immigration and drugs legislation, other illegal activity and in support of law enforcement, preserve the integrity of our national fish-stocks, our marine environment and other natural resources.

When protecting our borders, Patrol Boat crews are typically employed on a range of constabulary duties involving tracking, intercepting, stopping and boarding other vessels, and sometimes arresting their crews and seizing cargo.

ADV Cape Fourcroy departs HMAS Coonawarra to conduct continuation training as part of Operation RESOLUTE.
ADV Cape Fourcroy departs HMAS Coonawarra to conduct continuation training as part of Operation RESOLUTE.

Patrol Boat service


The Patrol Boat Group is headquartered in Darwin with vessels home ported in Darwin and Cairns.

Life in Australia’s tropical North has many advantages with easy access to Asia for leave, stunning National Parks, including Kakadu and Litchfield, just outside Darwin, a great outdoor lifestyle, camping, fishing, water sports and 4WD opportunities. There are also numerous cultural and artistic events, including festivals. Although in Darwin the cost of living is a little higher than elsewhere in Australia, this is compensated for by District Allowance. There are also travel allowances for RAN members and their dependants.

The region is monsoonal, and is characterised by two seasons - a wet season from late December until the end of April, and a dry season from May to December. Temperatures are warm all the year round, but the dry season is cooler at night and much less humid than the wet. The transition between the dry and the wet, between October and December, is a time of increasing humidity and rainfall, and is referred to as the build-up. The cyclone season runs from 1 November to 30 April each year.

Family services


Defence is dedicated to recognising the very important and valuable role of ADF members and their families in the achievement of the Defence mission. While carrying out their daily tasks, whether here in Australia or deployed overseas on operations, our personnel need to be assured that their families are well cared for and have the support they need. For this reason Defence has tasked Defence Member and Family Support (DMFS) (formerly Defence Community Organisation - DCO) to support commanders in looking after the welfare of Defence families. DMFS does this by providing a wide range of services that all members and their families can access to help them cope with aspects of the Defence lifestyle.

ADV Cape Fourcroy rescued nine Papua New Guinean fishermen after they drifted in the Torres Strait for six days.
ADV Cape Fourcroy rescued nine Papua New Guinean fishermen after they drifted in the Torres Strait for six days.