Please report any broken links or trouble you might come across to the Webmaster. Please take a moment to let us know so that we can correct any problems and make your visit as enjoyable and as informative as possible.

NavSource Online:
Submarine Chaser Photo Archive


Call sign:
Nan - Easy - Victor - Sugar

PC-451 class Submarine Chaser:

  • Laid down as Hull No.166, 28 September 1939 by the DeFoe Boat and Motor Works, Bay City, MI under the Experimental Small Craft program of 17 May 1938
  • Called X-Boats they differed in detail and were listed as 165 footers
  • Launched 23 May 1940
  • Commissioned USS PC-451, 12 August 1940
  • Assigned to the American theater of war on the east coast
  • Rams and sinks U.S. tug Nancy Moran 26 December 1941 off the east coast of Florida
  • Decommissioned 2 December 1945
  • Struck from the Naval Register 8 January 1946
  • Transferred to the Maritime Commission for disposal in January 1947
    Naval Vessel Register of 1 January 1949 lists plan for decommissioning and placing in reserve as December 1946
  • Fate unknown.


  • Displacement 374 t.
  • Length 163'
  • Beam 20' 9"
  • Speed 18.8 kts.
  • Complement 65
  • Armament: Two 3"/50 dual purpose mounts, two twin 20mm mounts, two single 20mm mounts, two Mk 20 Mousetrap projectors, two k-gun depth charge projectors and two depth charge tracks
  • Propulsion: Two 2,880bhp General Motors 16-258S diesel engines (Serial 5584 and 5585), two General Motors 6-233A diesel engine, 75 kw generator sets (Serial 5586 and 5587), Farrel-Birmingham
    single reduction gear, two shafts.

    Click on thumbnail
    for full size image
    Size Image Description Source
    PC-451 322k c. 1940
    Cover of Instructions For Care and Operation of General Motors Diesel Engine Model 6-233A Auxiliary Generator Set plus photos of same
    Ed Zajkowski
    PC-451 320k
    PC-451 289k
    PC-451 304k
    PC-451 125k 23 May 1940
    Prior to launching at Defoe Boat Works
    Dan Treadwell
    PC-451 146k 23 May 1940
    PC-451 71k .
    PC-451 202k c. 1940 .
    PC-451 165k c. August 1940
    Line drawing by A. D. Baker, III from U.S. Small Combatants: An Illustrated Design History, by Norman Friedman
    Robert Hurst
    PC-451 177k Original photo: c. 1941
    U.S. Navy photo on undated post card
    Replacement photo: Running trials
    Photo from U.S. Small Combatants: An Illustrated Design History by Norman Friedman
    Original photo: William Schaff
    Replacement photo: Robert Hurst
    PC-451 102k c. 1943
    Key West, FL.
    E. J. Comeau PC 553/1228
    PC-451 108k c. 1942 - 1944
    Photo from the collection of CMoMM Anthony J. Pellachio
    Tony Pellachio
    PC-451 85k c. 1942 - 1944
    Firing depth charge
    Photo from the collection of CMoMM Anthony J. Pellachio
    PC-451 98k c. 1942 - 1944
    Depth charge explosion
    Photo from the collection of CMoMM Anthony J. Pellachio
    PC-451 77k c. 1942 - 1944
    Coxswain Edward F. Koenig getting around in rough seas
    Photo from the collection of CMoMM Anthony J. Pellachio
    PC-451 75k
    PC-451 79k c. 1942 - 1944
    Rough seas
    Photo from the collection of CMoMM Anthony J. Pellachio

    Commanding Officers
    01LT Joe Wood Boulware, USN - USNA Class of 1927
    Awarded the Navy Cross (1944) and the Bronze Star - Retired as Rear Admiral
    12 August 1940 - 1942
    Courtesy Wolfgang Hechler and Ron Reeves

    View the PC-451 Crew Photos
    There is no DANFS History currently available for PC-451
    Additional Resources and Web Sites of Interest
    Patrol Craft Sailors Association
    Back To The Main Photo Index Back to the Patrol Craft/Gunboat/Submarine Chaser Ship Index Back To The Submarine Chaser (PC) Photo Index

    Comments, Suggestions, E-mail Webmaster

    This page created by Gary P. Priolo and maintained by Tom Bateman
    All pages copyright NavSource Naval History