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Gunboat Photo Archive

USS Impulse (PG 68)

Impulse call sign:
Nan - George - Charlie - Mike

ex-HMS Begonia (K 66)

Impulse served the Navies of the Great Britain and the United States.

British Flower Class Corvette/Temptress Class Patrol Gunboat:

  • Laid down as HMS Begonia (K 66) by Cook, Welton and Gemmill, Hull (Beverly), England
  • Launched 18 September 1940
  • Transferred to the U.S. Navy 10 March 1942
  • Commissioned USS Impulse (PG-68), 16 March 1942 at London, England
  • Decommissioned 22 August 1945 at Harwich, England and returned to the Royal Navy
  • Struck from the Naval Register 17 September 1945
  • Sold 22 July 1946 and renamed Begonlock
  • Sold in 1949 to Luzuriag Shipyards of Abaltzisketa, Spain and renamed Fundiciones Molinao
  • Renamed Astiluzu in 1951
  • Acquired by Naviera Compostela S.A. and renamed Rio Mero in 1956
  • Ran aground 21 January 1970 off Almeria, Spain and foundered
  • Scrapped in place.


  • Displacement 1,375 t.
  • Length 205' 2"
  • Beam 33'
  • Draft 14' 7"
  • Speed 16.5 kts.
  • Complement 87
  • Armament: One 4"/50 gun mount, one 3"/50 dual purpose gun mount, two 20mm gun mounts and two depth charge tracks
  • Propulsion: Two 225psi Scotch boilers, one 2,750ihp Charles D. Holmes vertical triple expansion engine, one shaft.
    Click on thumbnail
    for full size image
    Size Image Description Source
    HMS Begonia (K 66)
    Impulse 72k c. 1941
    Line drawing of HMS Begonia
    Joe Radigan
    Flower Class Corvette
    Flower Class Corvette 168k "Escort Vessel (Corvette) - (Flower Class) - With Extended Forecastle, Increased Sheer, & Fuller Lines Fwd." U.S. Navy preliminary design plan, copied from Smith Dock Co., Ltd., Drawing No. 232. This plan, dated April 1941, is for a modification of the British "Flower" class corvette. Scale of the original drawing is not given, but appears to be 1/16" = 1'. The original plan is in the 1939-1944 "Spring Styles Book" held by the Naval Historical Center.
    U.S. Navy photo S-511-30
    Naval Historical Center
    USS Impulse (PG 68)
    Impulse 93k The crew saluting the stars and stripes during the commissioning ceremony aboard the USS Impulse (PG-68) on March 16, 1942 at Albert Docks
    Imperial War Museum Admiralty Official Collection, by Smith, J.H. (Lt), Photo No. IWM (A 7789)c. January 1970
    Mike Green
    Impulse 107k The commissioning ceremonies complete, the captain of the USS Impulse (PG-68) addresses the ship's crew on March 16, 1942 at Albert Docks
    Imperial War Museum Admiralty Official Collection, by Smith, J.H. (Lt), Photo No. IWM (A 7788)
    Impulse 29k . Walter Laurence Welch
    via David L. Welch
    Impulse 91k Photo by Lieutenant S. J. Beadell, official Royal Navy photographer
    Imperial War Museum photo No. A5483 from collection No. 4700-01
    Robert Hurst
    Impulse 116k 27 August 1942
    U.S. Navy photo
    Joe Radigan
    Impulse 74k
    Impulse 106k
    SS Rio Mero
    Impulse 119k c. January 1970 website

    View the Impulse (PG-68)
    DANFS History entry located on the Haze Gray & Underway Website
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    This page created by Gary P. Priolo and maintained by Joe Radigan
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