YARRA sloops (1936-1940)
Swan 1940
Swan 1960
| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
| 1st group | |||||||
| Swan | L74 - U74, 1950- F74 | Cockatoo DYd | 5.1935 | 28.3.1936 | 1.1937 | TS 1955, sold 6.1964 | |
| Yarra | L77 - U77 | Cockatoo DYd | 5.1934 | 28.3.1935 | 1.1936 | sunk 4.3.1942 | |
| 2nd group | |||||||
| Parramatta | L44 - U44 | Cockatoo DYd | 11.1938 | 18.6.1939 | 4.1940 | sunk 27.11.1941 | |
| Warrego | L73 - U73, 1950- F312 | Cockatoo DYd | 5.1939 | 10.2.1940 | 8.1940 | survey vessel 1955, BU 4.1965 | |
|
Displacement standard, t |
1055 - 1070 |
|
Displacement full, t |
1480 - 1510 |
|
Length, m |
81.2 |
|
Breadth, m |
11.0 |
|
Draught, m |
3.02 - 3.07 deep load |
|
No of shafts |
2 |
|
Machinery |
2 sets Parsons geared steam turbines, 2 Admiralty 3-drum boilers |
|
Power, h. p. |
Swan, Yarra: 2000 Parramatta, Warrego: 2200 |
|
Max speed, kts |
Swan, Yarra: 16.5 Parramatta, Warrego: 16.85 |
|
Fuel, t |
oil 317 |
|
Endurance, nm(kts) |
5350(15) |
|
Armament |
Swan, Yarra: 3 x 1 - 102/45 QF Mk V, 1 x 4 - 12.7/62, 2 DCT, 1 DCR (15) Parramatta, Warrego: 1 x 2 - 102/45 QF Mk XVI, 1 x 1 - 102/45 QF Mk XVI, 1 x 4 - 12.7/62, 2 DCT, 1 DCR (15) |
|
Electronic equipment |
Yarra, Swan: type 126 sonar Parramatta, Warrego: type 127S sonar |
|
Complement |
100 |
Project history: First six sloops were designed under 1931
(Grimsby and Leith), 1932 (Lowestoft and Wellington) and 1933 (Deptford and
Londonderry) programs.
Unlike the ships of previous programs, Grimsby class sloops, first of all,
intended for escort service and had no
minesweeping equipment. Architecture of the hull and machinery as a whole
repeated the previous designs, and changes concerned first of all armament. The
artillery has been strengthened at the expense of transition from 102mm to 120mm
guns. New guns were not DP, and ships were equipped with 76mm antiaircraft gun.
Aberdeen and Fleetwood were designed under the 1934 program. They were designed
as previous Grimsby class, but being fitting out armament structure is changed.
Single-purpose 120mm guns have replaced by 102mm DP guns: 4 single on Aberdeen
(the place is provided, actually only two were installed, three since August,
1939), two twin on Fleetwood.
Australian sloops are created on the basis of Grimsby class design for RAN, but were a little bit larger. The second group had hardly more powerful machinery and on 0.35kts faster.
Modernizations: 1941, Parramatta: - 1 x 1 - 102/45; + 1 x 2 - 102/45 QF Mk XVI
1942, Swan: - 3 x 1 - 102/45, 1 x 4 - 12.7/62; + 2 x 2 - 102/45 QF Mk XVI, 1 x 1 - 40/60 Bofors Mk III, 6 x 1 - 20/70 Oerlikon Mk II/IV, presumably type 271, type 291 radars
1942, Warrego: - 1 x 2 - 102/45, 1 x 1 - 102/45, 1 x 4 - 12.7/62; + 2 x 2 - 102/45 QF Mk XVI, 1 x 1 - 40/60 Bofors Mk III, 6 x 1 - 20/70 Oerlikon Mk II/IV, presumably type 271, type 291 radars
1943 - 1944, both survived: + 2 DCT, 1 DCR, DC stowage rose up to 90
1955, Swan, Warrego: all old armament was replaced by 1 x 2 - 102/45 Mk 19, 1 x 1 - 40/60 Mk 7
Naval service: Parramatta was torpedoed by German submarine U559 in Mediterranean sea 27.11.1941. Yarra was sunk in action with Japanese cruisers and destroyers in Java sea 4.3.1942.
© Ivan Gogin, 2015