With the realization that war was approaching, the thirteen Grimsby-class sloops were laid down in the mid- to late-1930s. Of these eight were built in the United Kingdom for the Royal Navy, four in Australia for the Royal Australian Navy and one for India. Armament varied considerably between ships with the four Australian ships being similar to HMS Deptford but armed with an additional 4-inch (100 mm) gun.

Losses during World War II were Grimsby, Yarra and Parramatta. Some survivors of this class served into the 1960s.


  • Type: Sloop
  • Service Period: 1934-1966
  • Characteristics:
    • Length: 266 feet 3 inches (81.15 meters)
    • Beam: 36 feet (10.97 meters)
    • Draught: 10 feet (3.05 meters)
    • Displacement: 990 tons (Standard); 1,510 tons (Full Load)
  • Crew: 100
  • Propulsion: 2 x Admiralty 3-drum boilers, 2 x Parsons geared steam turbines, 2 x shafts, 2,000 shp (1,500 kW)
  • Speed: 16.5 knots (30.56 km/h)
  • Armament:
    • 4 x QF 4.7"/45-caliber Mk.IX dual purpose naval guns (2x2)
    • 10 x Bofors 40mm anti-aircraft guns (5x2)
    • 50 x depth charges

Unit RunEdit

Royal NavyEdit

  • HMS Grimsby (U16)
  • HMS Leith (U36)
  • HMS Lowestoft (U59)
  • HMS Wellington (U65)
  • HMS Londonderry (U76)
  • HMS Deptford (U53)
  • HMS Aberdeen (U97)
  • HMS Fleetwood (U47)

Royal Indian NavyEdit

  • HMIS Indus (U67)

Royal Australian NavyEdit

  • HMAS Yarra (U77)
  • HMAS Swan (U74)
  • HMAS Parramatta (U44)
  • HMAS Warrego (U73)

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