2 × Westinghouse Electric DC electric motors driving the 2 aft propellers, 1 × 3,000 shp (2,200 kW) Westinghouse DC electric motor driving the detachable and seldom used bow propeller.
Wind-class icebreakers had hulls of unprecedented strength and structural integrity, with a relatively short length in proportion to the great power developed, a cut away forefoot, rounded bottom, and fore, aft and side heeling tanks. Diesel electric machinery was chosen for its controllability and resistance to damage.[6]
Southwind, along with the other Wind-class icebreakers, was heavily armed for an icebreaker due to her design being crafted during World War II. Her main battery consisted of two twin-mount 5-inch (127 mm) deck guns. Her anti-aircraft weaponry consisted of three quad-mounted Bofors 40 mm anti-aircraft autocannons[2] and six Oerlikon 20 mm autocannons. She also carried six K-gundepth charge projectors and a Hedgehog as anti-submarine weapons. After her return from Soviet service she had a single 5"/38 caliber gun mount forward and a helicopter deck aft. In 1968 the forward mount was removed.[3][5]
First U.S. Coast Guard service
On 15 July 1944, she was commissioned as USCGC Southwind (WAG-280).
The ship served in the Soviet merchant marine under the name Admiral Makarov (Russian: Адмирал Макаров, named in honor of Stepan Makarov) until being returned to the U.S. Navy on 28 December 1949 at Yokosuka, Japan.
U.S. Navy service
In 1950 the ship was transferred to the U.S. Navy and rechristened as USS Atka (AGB-3), after the small Aleutian island of Atka. Upon arrival at her home port of Boston, Atka entered the Boston Naval Shipyard for a thorough overhaul and modernization. The work was completed late in May 1951, and Atka began operations from Boston, Massachusetts in July 1951.
Throughout her career in the American navy, the icebreaker followed a routine established by the changing seasons. In the late spring, she would set sail for either the northern or southern polar regions to resupply American and Canadian air bases and weather and radar stations. In early fall, she would return to Boston for upkeep and repairs. In the winter, the ship would sail various routes in the North Atlantic Ocean to gather weather data before returning to Boston in early spring for repairs and preparation for her annual polar expedition.
The ship often carried civilian scientists who plotted data on ocean currents and ocean water characteristics. They also assembled hydrographic data on the poorly charted polar regions. Atka was also involved in numerous tests of cold weather equipment and survival techniques.
She served in the Atlantic fleet and completed three Arctic tours.
On 31 October 1966 she was transferred to the United States Coast Guard and christened again as USCGC Southwind (WAGB-280), changed homeport to the United States Coast Guard Yard at Curtis Bay, Baltimore, Maryland.
After a shakedown cruise to Bermuda she proceeded on its first operational cruise north to Thule, Greenland.
She deployed to the Arctic in 1967, 1969, 1970, 1971, 1972 and 1973, as well as to the Antarctic in December 1967, December 1968 and January 1972. In 1968 she was involved in a diplomatic incident between Chile and Argentine about navigation rights in the Beagle channel.[9]
In September 1970, Southwind visited the port of Murmansk, being the first U.S. naval vessel to visit a Soviet port since the start of the cold war. During that visit, she took aboard a boilerplate (BP-1227) from the Apollo program. The boilerplate had been lost in the North Sea in early 1970, recovered by a Soviet fishing trawler in the Bay of Biscay, transferred to the Soviet Union, and passed to Southwind on 5 September 1970.[10][11]
From December 1972 to 31 May 1974 Southwind was stationed in Milwaukee to do icebreaking on the Great Lakes.[12]
Southwind was decommissioned on 31 May 1974, and sold for scrap on 17 March 1976 for $231,079.00 to Union Mineral & Alloy Corporation of New York.
^Harry, Stephanie (5 April 2017). "Atka (AGB-3): 1950-1966". Naval History and Heritage Command. Archived from the original on 9 May 2017. Retrieved 23 March 2019.
^Dater, Henry M. (February 1965). "Voyage of USS Atka (1954-1955)"(PDF). Bulletin of the U.S. Antarctic Projects Officer. 6 (4): 14–25. Archived(PDF) from the original on 24 March 2019. Retrieved 24 March 2019.
