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In-Service Vessel Sustainment (ISVS) Program.


Seventh 140-Foot Icebreaking Tug Arrives For Renovation Work  

Coast Guard Cutter Thunder Bay arrived at the Coast Guard Yard in Curtis Bay, Maryland, Nov. 7, 2017, to begin service life extension work as part of the In-Service Vessel Sustainment (ISVS) Program. The ship is the seventh of nine 140-foot icebreaking tugs to undergo service life extension work through the ISVS Program. Work includes replacement of the boat-launching davit, habitability improvements, and upgrades to propulsion and electrical systems. Thunder Bay entered service in 1986; the renovations will help keep it in service for about 15 more years. U.S. Coast Guard photo.

For more information: In-Service Vessel Sustainment program page