USCGC Katmai Bay (WTGB-101)

USCGC Katmai Bay (WTGB-101) is a United States Coast Guard Cutter and icebreaking tug.

USCGC Katmai Bay (WTGB-101)
USCGC Katmai Bay (WTGB-101)
History
United States
Builder: Tacoma Boatbuilding Company
Commissioned: 8 January 1979[1]
Homeport: Sault Ste. Marie, Michigan
Identification:
Status: Active
General characteristics
Class and type: 140' Bay-class Icebreaking Tug (WTGB)
Displacement: 662 tons
Length: 140 ft (43 m)[1]
Beam: 37 ft 6 in (11.43 m)[1]
Draft: 12 ft (3.7 m)[1]
Installed power:
  • 2 × 1,250 shp (930 kW) diesel engines Fairbanks Morse 8 1/8, 2 stroke 8 cylinder
  • 2 × 125 kW auxiliary generators Caterpillar 3306
Propulsion: Single 2500 shp D.C electric motor with single main propulsion shaft[1]
Speed: 14.7 knots (27.2 km/h; 16.9 mph)[1]
Range: 7,413 km (4,606 mi)[1]
Complement: 3 Officers, 2 CPO, 12 Crew

Design

Katmai Bay, namesake of an area of saltwater shoreline in the Katmai National Park and Preserve of Alaska, is the lead ship of a class of icebreaking tugboats designed to have greater multi-mission capabilities than the 110' Calumet-class Harbor Tug (WYTM). The most significant differences include greater horsepower, greater speed, longer range, increased ice-breaking capability, hull lubrication system, greater degree of automation, and better habitability.[1]

Trials were conducted in Whitefish Bay, Lake Superior, Michigan which determined that the ship has a tactical diameter of approximately three ship lengths when using 30 degrees rudder and that the ship could stop in 40 seconds with a reach of four ship lengths from an approach speed of 12.8 knots (23.7 km/h; 14.7 mph) when ordering full astern power. The ship can obtain a speed of 14.7 knots (27.2 km/h; 16.9 mph).[1]

Katmai Bay breaking ice

Deployment

Katmai Bay is stationed at Sault Ste. Marie, Michigan.[2] She is helping the USCGC Mackinaw (WLBB-30) in ice breaking duties.[3][4][5][6][7][8]

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References
  1. Hunt, Robert R.; Hundley, Lowry L. (1979). "Katmai Bay (WTGB-101) Speed, Tactical, and Maneuvering Trials". Bethesda, Maryland: David W Taylor Naval Ship Research And Development Center. Retrieved 10 March 2009. Cite journal requires |journal= (help)
  2. "USCGCGC Katmai Bay (WTGB 101)". United States Coast Guard. 26 January 2012.
  3. King, Dominique (15 April 2014). "From Monroe to Mackinac: Lighthouse moves to Chief Wawatam Park in St. Ignace,". Michigan Midwest Guest. Retrieved 25 April 2017.
  4. "U.S. Coast Guard Sector Sault Sainte Marie". U.S. Coast Guard Sector. Retrieved 30 April 2017.
  5. Heffernan, Tim (25 February 2016). "Ice Breakers: The Coast Guard Crews That Keep the Great Lakes Open for Business". Popular Mechanics. Retrieved 30 April 2017.
  6. Ellison, Garret (8 January 2015). "The freeze is on: Coast Guard begins ice-breaking on western Great Lakes". Mlive. Retrieved 30 April 2017.
  7. Final survey, Great Lakes-St.Lawrence Seaway Navigation Extension: Environmental Impact Statement. 5. Detroit, Michigan: U.S. Army Corps of Engineers. August 1979. p. 95. Retrieved 30 April 2017.
  8. "USCG Cutter Mackinaw Icebreaker Moored in Sault Ste. Marie, Michigan" (Video). 20 March 2014. Retrieved 30 April 2017 – via YouTube.


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