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Military


WAGB-83 Mackinaw

Class Mackinaw Class Icebreaker
Builder Toledo Shipbuilding Company
Keel Laid 20 March 1943
Launched 4 March 1944
Commissioned 20 December 1944
Decommissioned 10 June 2006
Cost $8,830,198 (hull & machinery); reportedly over $10 million total cost
Length 290'
Beam 74' 4" - 74.5
Draft 19' maximum
Displacement
  • 5,200 tons (1944)
  • 5,252 tons
  • Propulsion
  • 3 electric motors driven by
  • 6 Westinghouse DC generators driven by
  • 6 Fairbanks Morse, 10-cylinder, 2-cycle diesels; 12,000 SHP;
  • propellers
  • two 14-foot diameter stern propellers;
  • one 12- foot diameter bow propeller
  • powertotal 10,000 shp (7,500 kW)
    Performance
    Max 16 knots (1944); 18.5 knots (1975) 15 kn (28 km/h; 17 mph)
    Economic...
    Fluid Capacities (in gallons)
    Diesel Oil
  • 346,910 U.S. gal
  • 276,000 U.S. gal (1,040,000 L)
  • Potable Water 40,200 U.S. gal
    Heel & Trim Ballast Water 345,828 U.S. gal
    Lubrication oil 7,000 U.S. gal (26,000 L)
    Deck Gear
  • 2 x 12-ton cranes (removed & replaced with a Hiab Cargo Crane, 1,000-lbs. maximum load)
  • 1 x Almon Johnson Constant Tension Towing Winch w/ 94,000 lbs. maximum-rated pull
  • 4 x Constant Tension Winches (2 forward; 2 stern)
  • Anchors 2 x Dunn Bower 6,000-lbs anchors
    Complement
  • 144 (1944);
  • 75 (1975) 8 Officers, 67 Enlisted
  • Armament none (small arms only)
    Small Boats 25-foot MSB (1975)
    Electronics SL-1 radar (1944)



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