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Submarine Chaser Photo Archive


Call sign:
Nan - Able - Roger - Yoke

SC-497 Class Submarine Chaser:

  • Laid down 9 September 1941 by the Mathis Yacht Building Co., Camden, NJ
  • Launched 21 January 1942
  • Commissioned PC-527, 11 May 1942
  • Reclassified SC-527 in April 1943
  • Decommissioned 15 February 1946 at Samar, Philippines
  • Struck from the Naval Register 26 February 1946
  • Transferred to the State Department, Foreign Liquidation Commission 25 May 1947
    Naval Vessel Register of 1 January 1949 lists transfer to the State Department as February 1947
  • Sold in the Philippines in 1948
  • Fate unknown.


  • Displacement 148 t.
  • Length 110' 10"
  • Beam 17'
  • Draft 6' 6"
  • Speed 15.6 kts.
  • Complement 28
  • Armament: One 40mm mount, two .50 cal. machine guns, two depth charge projector "Y Guns," and two depth charge tracks
  • Propulsion: Two 880bhp General Motors 8-268A diesel engines, Snow and Knobstedt single reduction gear, two shafts.
    Click on thumbnail
    for full size image
    Size Image Description Source
    SC-497 161k Exploded view of SC-497 class Subchaser. © 1997 Theodore R. Treadwell

    Commanding Officers
    01LTJG John R. Rogers, USCG11 May 1942
    02LTJG Frank Cvetkovich, USCG.
    03LTJG Charles C. Sears, USCG3 December 1945 - 7 March 1946
    Courtesy Joe Radigan and Therese Cvetkovich

    There is no DANFS history currently available for SC-527
    History Addendum:


    She was laid down on 9 September 1941 by the Mathis Yacht Building Co., Camden, New Jersey. She was launched on 21 January 1942 and commissioned USS SC-527 on 11 May 1942. Her Coast Guard crew reported aboard on 28 May 1942. She was apparently assigned to duty with the Greenland Patrol and was homeported in Boston, Massachusetts.

    Her Record of Movements card indicates that by early 1944 she was still based in Boston and as of 8 April 1944 she was patrolling in Greenland waters (Arluck Fjord). On 14 August 1944 she was reported as "avail" through 26 August 1944. On 11 September 1944 she was at Little Creek, Virginia, where she apparently remained until 26 December 1944 when she was transferred to the 7th Fleet. She arrived at Miami, Florida on 29 December 1944 and departed on 12 January 1945. On 18 January 1945 she was at the Canal Zone and arrived at Pearl Harbor on 16 February 1945. On 25 March 1945 she was at Eniwetok; Leyte on 23 April 1945; Manila on 28 May 1945 and ended up at Samar at an unknown date.

    She was decommissioned at Samar on 15 February 1946 and her Coast Guard crew was removed on 7 March 1946. She was struck from the Naval Register on 26 February 1946 and transferred to the Foreign Liquidation Commission.

    Her commanding officers were (list incomplete): LTJG John R. Rogers; LTJG Frank Cvetkovich; LTJG Charles C. Sears (3 Dec 1945 - 7 March 1946).


    SC-527's Official Coast Guard History


    From 19 to 22 July, 1942, the SC-527 was undergoing repairs at the Boston Navy Yard. On the 24th she departed Boston, escorting four trawlers for Casco Bay. Departing Casco Bay on July 31st she arrived at Sydney, [Nova Scotia] August 14, 1942.


    On August 5, 1942, the SC-527 and SC-528 were escorts of convoy SG-4 consisting of four merchant vessels and five other escorts which left Sydney, N. S., anchoring at Bluie West One, Greenland on the 10th. On the 12th the SC-527 proceeded to the assistance of the wrecked army schooner ARMSTRONG, returning to BW #1 August 15, 1942. She escorted a vessel convoy to Kungnat Bay on the 22nd and on the 27th escorted the DARIEN to BW #1. On September 1, 1942, the SC-527 took aboard six enlisted Coast Guard personnel for transportation to Cruncher Island, Sondre Stromfjord returning as escort of two vessels with the COC ALGONQUIN [WPG-75] to BW #2 arriving September 5, 1942. On the 11th cruised off last Greenland Banks to board Portuguese fishing vessels but sighting none anchored in Holstenborg Harbor. On the 12th she proceeded to Edgesminde Harbor, returning to Sondre Stromfjord on the 14th to board SS HALMA laying to on the fishing bank and bound to Edgesminde with supplies for the Greenland Government. Arriving at Sondre Stromfjord on the 18th she proceeded to Marrak Point on the 28th and on the 29th, uas underway to join the USS BLUEBIRD [AM-72] and SS HALMA for Kungnat Bay. During October and November 1942 she was engaged in patrol duty in West Greenland waters, relieving the SC-528 on sound and lookout watch at Kungnat Bay on December 4, 1942. On the 10th she moored at Ivigtut until the 17th when she proceeded to Torssuktak, piloting the BELLE ISLE into Kungnat Bay on the 18th. Then she performed freight transportation duties until the end of the month.


    From January 1, 1943 to May 20, 1943 the SC-527 was on patrol duty in Greenland waters, acting as guardship at the entrance of Arsuk Fjord, transporting supplies and personnel between Greenland stations or anchoring in Kungnat Bay or at Ivigtut. On May 20, 1943, in company with SC-528 she departed Kungnat Bay with convoy GS-23 and stood into Boston Harbor on June 1, 1943, remaining at Charlestown Navy Yard until July 14, 1943 undergoing overhaul and repairs.


    The SC-527 departed Boston July 14, 1943, in convoy with the USS PINTO [AT-90], towing YNG-27 and YCK-2 in company with USS FALCON [ASR-2] and SC- 528. On the 15th the FALCON collided with the SC-527's port beam and the SC-527 proceeded to Portland, Maine, and moored to survey the damage, returning to Charlestown Navy Yard for hull repairs until July 31, 1943. On August 1, 1943, she was underway to join a convoy for Halifax. N. S., the escort being additionally composed of 3 Canadian corvettes and the COMANCHE [WPG-76]. On the 3rd the SC-527 was ordered to proceed to Halifax independently and moored. Proceeding to Sydney on the 7th and Argentia on 11th. After performing local escort out of Argentia, the SC-527 was underway on the 23rd with the RARITAN [WYT-93] and TAMPA [WPG-48] for Greenland, arriving at Gronne Dal on the 28th. Here she performed local escort duty and stood sound watch until the end of 1943.


    The SC-527 remained on patrol duty in Greenland waters until July 5, 1944. Her duties included ice breaking in the fjords, hospital transport duty, anti-submarine patrol, and local escort duty. On the 25th she proceeded, with SC-528, SC-704, and COMANCHE as guide, for Argentia arriving there on the 30th. On August 5, 1944, in company with SC-704, SC-528, and USS KAWEAH [AO-15] she proceeded to Boston where she was on availability through August 27, 1944. On that date she proceeded to Norfolk where she moored at Little Creek, Va., August 31, 1944. (No further reports of World War II activities are available).

    Taken from: United States Coast Guard. Statistical Division/Historical Section. Public Information Division. Transports and Escorts. V. (2 Vols.) Washington: Public Information Division, U.S. Coast Guard Headquarters, Volume 1, Escorts, Mar 1 1949, p. 172.

    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 Type Index Back to the 110' Submarine Chaser (SC) Photo Index

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    This page created by Joseph M. Radigan and maintained by Tom Bateman
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