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STUART frigates (1963-1964)


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Derwent 1980

Ships


Name No Yard No Builder Laid down Launched Comp Fate
Stuart F21, 1964- D48, 1969- 48   Cockatoo I DYd 20.3.1959 8.4.1961 28.6.1963 decommissioned 7.1991, BU 1992
Derwent F22, 1964- D22, 1969- 49   Williamstown DYd 16.6.1959 17.4.1961 30.4.1964 decommissioned 8.1994, scuttled 12.1994


Technical data


Displacement standard, t

2150

Displacement full, t

2560

Length, m

109.7 pp 112.7 oa

Breadth, m

12.5

Draught, m

3.90 max

No of shafts

2

Machinery

2 sets ASR geared steam turbines, 2 Babcock & Wilcox boilers

Power, h. p.

30000

Max speed, kts

29

Fuel, t

oil 370

Endurance, nm(kts)

4500(12)

Armament

Stuart: 1 x 1 Ikara ASuM (30 Ikara), 1 x 2 - 120/45 Mk 6, 1 x 2 - 40/60 STAAG Mk 2, 1 x 3 - 305 Limbo Mk 10 ASW mortars

Derwent: 1 x 4 Seacat GWS22 SAM (24 Seacat), 1 x 2 - 120/45 Mk 6, 2 x 3 - 305 Limbo Mk 10 ASW mortars

Electronic equipment

Stuart: type 975, type 974, type 293, type 977, type 978, type 903, type 994, LW-02 radars, type 162, type 170, type 177M, type 185 sonars

Derwent: type 975, type 974, type 293, type 977, type 978, type 904, type 994, LW-02 radars, type 162, type 170, type 177M, type 185 sonars

Complement

200 - 235



Graphics


<i>Derwent</i> 1980
Derwent 1980


Project history

In August 1950 plans for six Type 12 frigates were announced, but subsequently the number was cut to four; No 5 and No 6 were later reordered to a modified design. They incorporated all the improvements of the RN Rothesay class, and in addition had MRS 3 fire control and Dutch Signaal LW-02 air warning radar. The second pair had the forecastle deck extended aft to the stern, providing additional accommodation. Stuart was the first to be fitted with the Ikara ASW system, which replaced one of the Limbo Mk 10 mortars aft, and Derwent was the first RAN ship to receive the Seacat GWS22 missile system in lieu of the twin 40mm Bofors.

Modernizations

1965, Derwent: - 1 x 3 - 305 Limbo ASWRL; + 1 x 1 Ikara ASuM (30 Ikara)

1965, Stuart: - 1 x 2 - 40/60, type 903 radar; + 1 x 4 Seacat GWS22 SAM (24 Seacat), type 904 radar

1983, Stuart; 1985, Derwent: - 1 x 3 - 305 Limbo ASWRL, type 293, type 904 radars, type 170, type 177M sonars; + 2 x 3 - 324 TT, SPS-55, WM-22 radars, Mulloka sonar

Naval service

No significant events.