Falmouth class Sloops
Name Pennant Builder Completed Fate
Bridgewater group
Bridgewater U01 Hawthorn Leslie 14/3/29 Scrapped 1947
Sandwich U12 Hawthorn Leslie 23/3/29 Scrapped 1946
Hastings group
Folkestone U22 Swan Hunter 25/6/30 Scrapped 1947
Hastings U27 Devenport RDY 26/11/30 Scrapped 1946
Penzance U28 Devenport RDY 15/1/31 Torpedoed U37 off of Greenland, 28/8/40
Scarborough U25 Swan Hunter 31/7/30 Scrapped 1949
Shoreham group
Bideford U43 Devenport RDY 23/2/33 Scrapped 1949
Fowey U15 Devenport RDY 11/9/31 Mercantile Fowlock 1946, scrapped 1950
Rochester U50 Chatham RDY 31/3/32 To tender 1945, scrapped 1951
Shoreham U32 Chatham RDY 2/11/31 Mercantile Jorge Fel Joven 1946, scrapped 1950
Falmouth group
Dundee U84 Chatham RDY 31/3/33 Torpedoed U48 off of Ireland, 19/4/40
Falmouth U34 Devenport RDY 27/10/32 To RNVR as Calliope 1952, scrapped 1968
Milford U51 Devenport RDY 22/12/32 Scrapped 1949
Weston (ex Weston-Super-Mare) U72 Devenport RDY 23/2/33 Scrapped 1947

The Washington Naval Treaty of 1921 did not mention minor vessels, and so this class was put in hand to replace the older sloops, and were little more that modern versions of the "Old Flower" class. The London treaty however, declared vessels under 2000 tonnes, with smaller than 6" guns and less thatn 20 knot speed were not restricted, so this formed the limiting factor of this class, and all subsequent sloops.
By adopting more modern machinery ( the turbine ) and construction, a saving of several hundred tons was made, and with oil fuel, an equal speed but much greater radius was gotten.
Armament was to be a 4" HA gun forward, and a similar LA gun aft, and because the "Old Flower" were excellent minesweepers, minimum draft was worked in so they could revert to this role. They were also capable ocean escorts, the role of the sloop at that time being more along the lines of colonial duties - 'send a gunboat' policy.
The Shoreham and Falmouth groups were 15 ft. longer than the original six units.
War modifications included standardising on 4" AA guns, adding second quad machine gun aft, two 20mm cannon in the wings, SW type 271 and AW type 291 RDF, and later both machine guns were replaced in some by 20mm cannon. Sonars were also updated, an a hedgehog DC launcher was added forward.

Dimensions & Displacements
. Bridgewater / Hastings group Shoreham / Falmouth group
Length 266.25' 281.25
Beam 34' 35'
Draught 8.75' 8.25'
Displacement 1045 tons 1105 tons


Performance & Propulsion
Speed 17.25 knots
2 x Admiralty 3-drum boilers, 2 x Parsons impulse reaction turbines driving 2 shafts @ 2000 shp


Armament & Complement
Complement 100 officers & ratings
  • Gun
    • 1 x 1 x 4" AA
    • 1 x 1 x 4" LA
    • 1 x 4 x 0.5" MG AA.
  • ASW
    • DC throwers
    • DC rails
  • Gun
    • 2 x 2 x 4" AA
    • 2 x 1 x 20mm Oerlikon AA
    • 2 x 4 x 0.5" MG AA or;
    • 2 x 1 x 20mm Oerlikon AA
  • ASW
    • Hedgehog DC launcher
    • DC throwers
    • DC rails
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