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