USCGC Katmai Bay

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	IMO number: 7636212 MMSI number: 366999977 Callsign: NRLX
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

USCGC Katmai Bay (WTGB-101) is a United States Coast Guard Cutter, and the lead ship of the Bay-class of icebreaking tugboats. At 140 ft (43 m), she is designed to have greater multi-mission capabilities than the 110' Calumet-class Harbor Tug (WYTM). She is homeported in Sault Ste Marie, Michigan, operating in support of the much larger USCGC Mackinaw (WLBB-30).

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]

References

1. Hunt, Robert R.; Hundley, Lowry L. (1979). "Katmai Bay (WTGB-101) Speed, Tactical, and Maneuvering Trials". Defence Technical Information Center. Retrieved 10 March 2009.
2. "USCGC Katmai Bay (WTGB 101)". United States Coast Guard. 24 August 2023.
3. "U.S. Coast Guard Sector Sault Sainte Marie". U.S. Coast Guard Sector. Retrieved 30 April 2017.

External links