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  USCGC Tiger (WSC-152, Polar Merchant)
USCG
Active-class patrol boat

232 Tons
125' x 23.6' x 7.6'
As Built 1927-1941
1 x 3"/27 gun

World War II 1941–1945
1 x 3"/27 gun
2 x depth charge racks

Click For Enlargement
USCG 1927
Ship History
Built by American Brown Boveri Electric Corp in Camden, New Jersey at a cost of $63,173. Laid down February 1, 1927 with yard number 346 as the 28th Active-class patrol boat with two 6-cylinder, 300 hp engines. Launched April 18, 1927 as No. 346 from slipway J. Acquired April 27, 1927 by the U.S. Coast Guard (USCG). Commissioned May 3, 1927 as USCGC Tiger (WSC-152).

Assigned to Coast Guard Base Two in Stapleton, New York and during the prohibition era used to intercept "rum runners" attempting to transport alcohol by sea. On June 6, 1933 moved to Norfolk, Virginia. During the 1930's the engine was replaced by a more powerful 8-cylinder units that gave the vessel an additional 3 knots of speed. Afterwards, proceeds via the Panama Canal and operates from Honolulu.

In the middle of 1941, placed under the jurisdiction of the U.S. Navy (USN) and assigned to the local defense force of the 14th Naval District at Honolulu. Equipped with two depth charge racks and listening gear and patrolled off Honolulu with sister ship USCGC Reliance (WSC-150) and USCGC Taney (WPG-37). On November 1, 1941 under Executive Order 8929 the U.S. Coast Guard (USCG) was transferred to the U.S. Navy (USN).

Wartime History
On December 7, 1941 in the early morning, USCGC Tiger was patrolling off the south coast of Oahu. At 5:00am, patrolling off the south shore of Oahu at various courses at half speed. At 6:45am off Barber's Point picked up a sounding. This might have been one of the Japanese midget submarines approaching Pearl Harbor. At 7:15am detected an underwater object and maneuvered to ascertain the position and stopped the engines but the sounding faded out. During the Japanese attack on Pearl Harbor and Oahu, fired on by Japanese aircraft and U.S. coastal artillery on southern Oahu that missed. Tiger did not return fire against either. For her actions, she earned a battle star.

In late December 1941, takes under tow a lifeboat from SS Manini sunk December 17, 1941 by Japanese submarine I-72.

On December 20, 1941 aids a lifeboat with thirty survivors from SS Lahaina damaged by Japanese submarine I-9 on December 11, 1941 and sunk December 12, 1941 and helps them to reach Sprecklesville Beach east of Kahului on Maui.

On December 27, 1941 Tiger discovered a lifeboat with fourteen survivors from SS Prusa sunk December 18, 1941 by Japanese submarine I-72.

On March 29, 1942 while patrolling off Honolulu boards American gasoline screw Simba and found an unauthorized passenger and orders the vessel back to Honolulu.

For the remainder of the Pacific War, Tiger and Reliance guard Honolulu Harbor and escort ships and convoys arriving and departing with one ship on duty with the other on standby.

Postwar
On November 12, 1947 decommissioned. On June 14, 1948 sold off, likely to Tacoma Boiler Works in Tacoma, Washington and renamed Polar Merchant. Used as a tug that operated between Puget Sound and Alaska, Later, used as a fishing boat.

Fate
During the 1980s or 1990s moved to Tyee Marina and had the superstructure removed down to the gunnel and the hull gutted then filled with foam. Used as a breakwater at the entrance to Tyee Marina at the edge of Commencement Bay near Tacoma, Washington State and remains today.

Awards
For her World War II service, earned one battle star for her actions on December 7, 1941.

References
U.S. Coast Guard - Tiger, 1927 (photo)
USCGC Tiger served at Pearl Harbor, used as floating hull at Tyee Marina December 4, 2016

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Last Updated
December 26, 2025

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