2 February 2001

IN SERVICE: 6

Name	No	Builders	Laid down	Laun ched	Comm- issioned
COLLINS	73	Australian Submarine Corp, Adelaide	14 Feb 1990	28 Aug 1993	27 July 1996
FARNCOMB	74	Australian Submarine Corp, Adelaide	1 Mar 1991	15 Dec 1995	31 Jan 1998
WALLER	75	Australian Submarine Corp, Adelaide	19 Mar 1992	14 Mar 1997	10 July 1999
DECHA- INEUX	76	Australian Submarine Corp, Adelaide	4 Mar 1993	12 Mar 1998	June 2000
SHEEAN	77	Australian Submarine Corp, Adelaide	17 Feb 1994	3 May 1999	Oct 2000
RANKIN	78	Australian Submarine Corp, Adelaide	12 May 1995	May 2000	June 2001

Displacement, tons: 3,051 surfaced; 3,353 dived
Dimensions, feet (metres): 255.2 × 25.6 × 23 (77.8 × 7.8 × 7)
Main machinery: Diesel-electric; 3 Hedemora/Garden Island Type V18B/14 diesels; 6,020 hp (4.42 MW); 3 Jeumont Schneider generators; 4.2 MW; 1 Jeumont Schneider motor; 7,344 hp(m) (5.4 MW); 1 shaft; 1 MacTaggart Scott DM 43006 hydraulic motor for emergency propulsion
Speed, knots: 10 surfaced; 10 snorting; 20 dived
Range, miles: 9,000 at 10 kt (snort); 11,500 at 10 kt (surfaced),  400 at 4 kt (dived)
Complement: 42 (6 officers)

Missiles: SSM: McDonnell Douglas Sub Harpoon; active radar homing to 130 km (70 n miles) at 0.9 Mach; warhead 227 kg.
Torpedoes: 6-21 in (533 mm) fwd tubes. Gould Mk 48 Mod 4; dual purpose; wire-guided; active/passive homing to 38 km (21 n miles) at 55 kt or 50 km (27 n miles) at 40 kt; warhead 267 kg. Air turbine pump discharge. Total of 22 weapons including Mk 48 and Sub Harpoon.
Mines: 44 in lieu of torpedoes.
Countermeasures: Decoys: 2 SSE.
ESM: Argo AR 740; radar warning.
Weapons control: Boeing/Rockwell integrated system. Link 11.
Radars: Navigation: Kelvin Hughes Type 1007; I-band.
Sonars: Thomson Sintra Scylla active/passive bow array and passive flank, intercept and ranging arrays.
GEC-Marconi Kariwara (first pair) or Thomson Marconi Narama or Allied Signal TB 23; retractable passive towed array.

Programmes: Contract signed on 3 June 1987 for construction of six Swedish-designed Kockums Type 471. Fabrication work started in June 1989; bow and midships (escape tower) sections of the first submarines built in Sweden.
Structure: Stirling air independent propulsion (AIP) has been tested on a shore rig. Scylla is an updated Eledone sonar suite. Diving depth, 300 m (984 ft). Anechoic tiles are fitted during build to all but Collins which is retrofitted. Pilkington Optronics CK 43 search and CH 93 attack periscopes fitted. Plans for an external mine belt have been abandoned.
Operational: All to be based at Fleet Base West with one or two deploying regularly to the east coast. Dechaineux and Sheean have achieved interim operational capability following modifications to propellers and casing sections and improvements to the hydraulics system and engine reliability. Significant improvements to the noise signature have been achieved. A similar upgrade to Farncomb and Rankin is being undertaken during 2001. Collins and Waller will follow to complete the class upgrade.

Displacement Dived (tonnes):	3406.6
Displacement Surfaced (tonnes):	3099.8
Length (m):	77.8
Beam (m):	7.8
Draught (m):	7
Range (nm):	9000
Speed (knots):	10

WALLER - 5/1999, P Lewis, RAN

COLLINS - 4/2000*,D Yates, RAN

WALLER - 7/1998, S Farrow, RAN

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