HMAS Diamantina, sails into Rabaul Harbour in Papua New Guinea on RENDER SAFE 2011
Commanding Officer
Huon Class
Role Mine Warfare
M 86
International Callsign
Whoever Leads Protects
Home Port
ADI Newcastle
2 December 2000
4 May 2002
Dimensions & Displacement
Displacement 732 tonnes
Length 52.5 metres
Beam 9.9 metres
Draught 3 metres
Speed 14 knots
Range 1,600 nautical miles
Crew 46
  • 1 x Fincantieri GMT diesel
  • 3 x Isotta Fraschini 1300 diesels
  • 3 x electrohydraulic motors
  • Riva Calzoni retractable/rotatable APUs
Guns 1 x MSI DS 30B 30mm
Physical Countermeasures
  • 2 x Bofors SUTEC Double-Eagle Mk 2 mine disposal vehicles
  • 2 x MEL Aviation Super Barricade chaff launchers
Electronic Countermeasures AWADI Prism
Radars Kelvin Hughes 1007
Sonars GEC-Marconi Type 2093
Combat Data Systems GEC-Marconi Nautis 2M
Weapon Control Systems Radamec 1400N optronic surveillance system
Inherited Battle Honours PACIFIC 1941-45
News Articles
Image Gallery
HMAS Diamantina (II) ships badge

HMAS Diamantina (II) is the fifth of six Huon Class Minehunter Coastal vessels delivered to the RAN between 1998 and 2002, and represents the latest in Mine Countermeasures (MCM) technology. Diamantina is able to undertake extended MCM operations in widely dispersed and environmentally diverse threat areas within Australia and regional waters.

The ship is the most advanced of its type in the world. Like her sister ships, Diamantina is made of fibre reinforced plastic and has a unique single skin solid hull that has no ribs or frames and provides high underwater shock resistance and very low magnetic and noise levels. This hull is designed to flex inwards if an undersea explosion occurs nearby. All machinery/equipment is mounted on cradles or suspended from bulkheads to further enhance resistance to shock damage and protect ship systems.

The minehunter's principal task is to keep Australia's maritime focal points for trade free from the threat of mines. The ship uses high frequency sonar to search for, detect and then classify mine-like objects. Once detected, the ship deploys a remote controlled mine disposal vehicle or clearance divers to identify and, if necessary, neutralise the mine.

The Huon Class Minehunters are all named after Australian rivers. Diamantina is the second RAN ship to carry the name. HMAS Diamantina (I) was a River Class Frigate that was in service from 1945-1980. She saw action during WWII, and from 1959 to decommissioning was employed as an oceanographic survey vessel.