July 7, 2010
Avtron upgrades third WTGB
Avtron Automation, Independence, Ohio, recently upgraded the electrical propulsion system of a third U. S. Coast Guard WTGB-class ice breaker, the Penobscot Bay, with an Avtron ADD-32 electric drive propulsion system.
The upgrade was undertaken under a recent U.S. Coast Guard contract to upgrade the main propulsion system on their fleet of all nine WTGB ice breaking tugs.
The work on the Penobscot Bay was carried out in Bayonne, N.J. It followed the upgrade of the Neah Bay in Cleveland and the Bristol Bay in Detroit.
The WTGBs are 140 ft diesel-electric vessels which operate on the Great Lakes and in the northeastern U.S. Their mission requires them to be operational at all times. However, the WTGBs' existing electric drive control systems were obsolete and therefore unsupportable.
Based on previous successful Avtron drive projects with the 175 ft WLM Buoy Tenders and 240 ft WLBB Mackinaw, the Coast Guard chose Avtron for the WTGB-class.
Over the next three years, Avtron will provide new Avtron DMG motor and generator field supplies, PLC, metering, and updated bridge controls for the entire WTGB class of vessels.
The WTGB fleet joins a family of Avtron driven vessels that, besides U.S. Coast Guard vessels, includes ferries, dredges, ice breakers, research vessels, and commercial ships.