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USCGC Bollard breaking light ice.
Class overview
Builders	Gibbs Gas Engine, 1961–1962 Barbour Boat Works, 1962–1963 Western Boat Builders, 1966–1967
Operators	United States Coast Guard
Preceded by	64 foot harbor tug
Built	1961–1967
In commission	1961–
Completed	15
Active	11
Retired	4
General characteristics (1961)
Type	Small harbor tug (WYTL)
Displacement	74 tons
Length	64 ft 11 in (19.79 m)
Beam	19 ft 1 in (5.82 m) max
Draft	9 ft (2.7 m) max
Propulsion	(1) 400 hp diesel, single screw
Speed	10.6 knots max (1964)
Range	1,130 miles at maximum sustained speed of 10.6 knots 3,690 miles at 7.0 knots economic speed (1964)
Complement	5 men
Sensors and processing systems	SPN-11 (1964)
Armament	none

The USCG 65' small harbor tug is a class of fifteen tugs used by the United States Coast Guard for search and rescue, law enforcement, aids-to-navigation work and light icebreaking. The tugs are capable of breaking 18 in (0.46 m) of ice with propulsion ahead and 21 in (0.53 m) of ice backing and ramming. They were designed with steel hulls to replace the 64 ft (20 m) wooden-hulled tugs that had been in service since the 1940s and were built by Gibbs Gas Engine Company, Jacksonville, Florida; Barbour Boat Works of New Bern, North Carolina; and Western Boat Builders Corporation, Tacoma, Washington from 1961 to 1967. They were originally powered by a single 400 horsepower diesel engine, however several have been re-powered with 500 horsepower main drive engines since they were constructed.

Ships

Notes

Footnotes

1. Currently is M/V Swivel owned and operated by Governors Island Preservation and Education Corporation (GIPEC), Governors Island, New York
2. Currently Training Vessel Towline owned and operated by Massachusetts Maritime Academy, Buzzard's Bay, Massachusetts
3. Currently is Training Vessel Growler owned and operated by U.S. Merchant Marine Academy, Kings Point, New York
4. Currently is Research Vessel Clifford A. Barnes owned by the National Science Foundation and operated by the University of Washington, School of Oceanography

Citations

1. ^ "65-foot Small Harbor Tug (WYTL)", Assets: Aircraft, Boats, and Cutters, U.S. Coast Guard
2. ^ USCGC Chock (WYTL-65602), Data Sheet (26 September 2012), U.S. Coast Guard
3. "Gibbs Gas Engine Company"' Small Shipbuilders and Boatbuilders List, Shipbuilding History.com
4. "Barbour Boat Works", Small Shipbuilders and Boatbuilders List, Shipbuilding History.com
5. "Western Boat Builders Corp.", Small Shipbuilders and Boatbuilders List, Shipbuilding History.com
6. ^ Scheina, pp 105-106
7. "Governors Island Alternative Transportation Study", (2012), p 16, John A. Volpe National Transportation Systems Center
8. "Marine Facilities", Our Campus, Massachusetts Maritime Academy
9. T/V Growler, About USMMA/Our fleet, U.S. Merchant Marine Academy
10. "R/V Barnes", School of Oceanography website, University of Washington

References cited

• "65-foot Small Harbor Tug (WYTL)" (asp). Assets: Aircraft, Boats, and Cutters. U.S. Coast Guard. Retrieved 8 October 2013.
• "Barbour Boat Works". Small Shipbuilders and Boatbuilders List. Shipbuilding History.com. Retrieved 10 October 2013.
• "Gibbs Gas Engine Company". Small Shipbuilders and Boatbuilders List. Shipbuilding History.com. Retrieved 10 October 2013.
• "Governors Island Alternative Transportation Study" (PDF). John A. Volpe National Transportation Systems Center. 2012. Retrieved 10 October 2013.
• "Marine Facilities". Our Campus. Massachusetts Maritime Academy. Retrieved 10 October 2013.
• "R/V Barnes". School of Oceanography website. University of Washington. Retrieved 2 October 2013.
• "T/V Growler". About USMMA/Our fleet. U.S. Merchant Marine Academy. Retrieved 10 October 2013.
• "USCGC CHOCK (WYTL-65602)" (PDF). Data Sheet (26 September 2012). U.S. Coast Guard. Retrieved 10 October 2013.
• "Western Boat Builders Corp". Small Shipbuilders and Boatbuilders List. Shipbuilding History.com. Retrieved 10 October 2013.
• Scheina, Robert L. (1990). U.S. Coast Guard Cutters & Craft, 1946–1990. Naval Institute Press, Annapolis, Maryland. ISBN 978-0-87021-719-7.

• Ships of the United States Coast Guard
• Auxiliary tugboat classes