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The Bay-class tugboat is a class of icebreaking
USCG page
{{DEFAULTSORT:Bay-class icebreaking tug Ships built by Tacoma Boatbuilding Company
tugboat
A tugboat or tug is a marine vessel that manoeuvres other vessels by pushing or pulling them, with direct contact or a tow line. These boats typically tug ships in circumstances where they cannot or should not move under their own power, suc ...
s of the United States Coast Guard
The United States Coast Guard (USCG) is the maritime security, search and rescue, and Admiralty law, law enforcement military branch, service branch of the armed forces of the United States. It is one of the country's eight Uniformed services ...
, with hull numbers WTGB-101 through to WTGB-109.
They can proceed through fresh water ice up to thick, and break ice up to thick, through ramming. They can also ram pressure ridges of up to eight feet in thickness. These vessels are equipped with a system to lubricate their progress through the ice, by bubbling air through the hull.
Service Life Extension Program (SLEP)
A SLEP is a major overhaul intended to extend a vessel's service life; it is typically scheduled as the vessel approaches the end of its originally planned service life. The Bay-class tugboat SLEP project includes significant system upgrades and improvements to the propulsion plant; to the heating, ventilation, and air conditioning systems; installation of an engine-room fire-suppression system; boat launching davit replacement; Oily Water Separator replacement; stack exhaust configuration modifications; hull air-ice lubrication system; and crew habitability improvements to meet current standards (including removal of lead paint). When the Coast Guard described the Bay-class tugboat SLEP to the U.S. Congress in 2015, the first SLEP was scheduled to take 12 months; however, the Coast Guard anticipated that after the third SLEP the Coast Guard Yard would have enough familiarity with the process to complete two SLEPs per year, with an anticipated duration of 9 months each. The first of nine cutters (''Morro Bay'') entered SLEP at the Coast Guard Yard on July 1, 2014. ''Morro Bay'' returned to her homeport of Cleveland in September 2015 http://www.uscgnews.com/go/doc/4007/2605666/Coast-Guard-Cutter-Morro-Bay-returns-to-Cleveland-following-14-month-overhaul
Ships
* (WTGB-101) ''Katmai Bay'' (Homeport - Sault Ste. Marie, MI / Builder: Tacoma Boatbuilding Company) * (WTGB-102) ''Bristol Bay'' (Homeport -Detroit, MI
Detroit ( , ) is the List of municipalities in Michigan, most populous city in the U.S. state of Michigan. It is situated on the bank of the Detroit River across from Windsor, Ontario. It had a population of 639,111 at the 2020 United State ...
/ Builder: Tacoma Boatbuilding Company)
* (WTGB-103) ''Mobile Bay'' (Homeport - Sturgeon Bay, WI / Builder: Tacoma Boatbuilding Company)
* (WTGB-104) ''Biscayne Bay'' (Homeport - St. Ignace, MI / Builder: Tacoma Boatbuilding Company)
* (WTGB-105) ''Neah Bay'' (Homeport - Cleveland, OH / Builder: Tacoma Boatbuilding Company)
* (WTGB-106) ''Morro Bay'' (Homeport - Cleveland, OH / Builder: Tacoma Boatbuilding Company]
* USCGC Penobscot Bay (WTGB-107), (WTGB-107) ''Penobscot Bay'' (Homeport - Bayonne, NJ / Builder: Bay City Marine Incorporated)
* (WTGB-108) ''Thunder Bay'' (Homeport - Rockland, ME / Builder: Bay City Marine Incorporated)
* (WTGB-109) ''Sturgeon Bay'' (Homeport - Bayonne, NJ / Builder: Bay City Marine Incorporated)
* (WTGB-110) ''Curtis Bay'' (Construction cancelled)
See also
* Bay-class lifeboat - three vessels with the Canadian Coast Guard * Samuel Risley-class icebreaker and buoy tender with the Canadian Coast GuardReferences
External links
USCG page
{{DEFAULTSORT:Bay-class icebreaking tug Ships built by Tacoma Boatbuilding Company