NAVYPEDIA

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
Algonquin (ex-Valentine, ex-Kempenfelt)	R17 - DDE224		John Brown, Clydebank, UK	10/1942	2.9.1943	2/1944	BU 4.1971
Sioux (ex-Vixen)	R64 - DDE225		White, Cowes, UK	10/1942	14.9.1943	2/1944	BU 8.1965

Technical data

Data variant	as completed	type 15 frigate
Displacement standard, t	1780 - 1810	2240
Displacement full, t	2505 - 2545	2850
Length, m	103.5 pp 110.6 oa	103.5 pp 109.2 oa
Breadth, m	10.9	10.9
Draught, m	4.32 - 4.37 deep load	4.20 - 4.30
No of shafts	2	2
Machinery	2 sets Parsons geared steam turbines, 2 Admiralty 3-drum boilers	2 sets Parsons geared steam turbines, 2 Admiralty 3-drum boilers
Power, h. p.	40000	40000
Max speed, kts	36.75	36.75
Fuel, t	oil 588
Endurance, nm(kts)	4675(20)	3000 (20) (with 476 t of oil)
Armament	4 x 1 - 120/45 QF Mk IX, 1 x 2 - 40/56 Bofors Mk VIII/IX, 4 x 2 - 20/70 Oerlikon Mk II/IV, 2 x 4 - 533 TT, 4 DCT, 2 DCR (70 - 130 DC)	1 x 2 - 102/45 Mk 19, 1 x 2 - 76/50 Mk 22, 2 x 1 - 40/60 Mk 9, 2 x 3 - 305 Limbo Mk 10 ASWRL
Electronic equipment	type 276, type 285, type 291 radars, type 144 sonar	type 278, type 262, type 293 radars, type 170, type 174 sonars
Complement	180 - 225	195

Standard scale images

Project history

By designing of 8 ships of "S" class, ordered in 1941, attempt considerably has been made to strengthen antiaircraft armament as at the expense of transition from 40mm quadruple pompom to the newest twin 40mm Bofors-Hazemayer MG with radar aiming, and introductions of 120mm/45 guns in mounts with elevation angle increased to 55°. Shield of this mount had strongly oblique face, that together with stem fulfilled on Tribal class with bigger, than at "J" class, declination (for decrease of splashing on full speed), gave to the new ships very elegant kind. Under the design armament supplemented 4 single Oerlikons, however by the moment of the completion there was a possibility to change them on the twin MG of the same brand. At the same time, because of an availability delay, Hazemayers have not got on Scorpion and Savage on which their absence indemnified by increasing of Oerlikons number. Latter has been chosen for tests of twin 114mm DP turret mount created for "Battle" class: the first in the RN, intended for placing on so small ship as destroyer. Two single mounts of same 114mm calibre were placed aft, in order to avoid problems with supply by shells of two different types. Thus, this destroyer carried at once two new artillery systems (114mm single mounts were planed to introduce on subsequent destroyer classes).

The ships of two following classes, "Т" and "U", were designed on "S" class specification (difference was only in absence of the Arctic equipment). Shortage of Hazemayers has also affected: only three ships of "T" class were entered service with designed armament. Tumult was equipped with two experimental fixed torpedo tubes instead of the TT No1, soon after completion they were removed and replaced by regular TT bank.

The last 16 ships of "V" and "W" classes differed by Arctic equipment ("V" class, it is demounted early 1945) and transition to a new fire control system ("W" class). Only three of them not received Hazemayers.

Modernizations

1945, Sioux: - 2 x 2 - 20/70; + 2 x 1 - 40/56 Bofors Mk III

1956, Algonquin: type 15 frigate, as given in the table. Ship had taken fully new silhouette, forecastle was enlarged and new aluminium alloy superstructure fitted.

Naval service

No significant events.

© Ivan Gogin, 2015