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April 2018 MAINE COASTAL NEWS Page 23. U. S. C G N


6 February Despite fl ooding, engine failure, U.S. ice- breaker completes Antarctica operation MCMURDO STATION, Antarctica – The crew of U.S. Coast Guard Cutter Polar Star completed their mission Tuesday in support of National Science Foundation (NSF) after cutting a resupply channel through 15 miles of Antarctic ice in the Ross Sea and escorting supply vessels to the continent. The Polar Star sailed from Seattle to


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assist in the annual delivery of operating supplies and fuel for NSF research stations in Antarctica during Operation Deep Freeze by carving a navigable path through season- al and multi-year ice sometimes as much as 10-feet thick. Operation Deep Freeze is the logistical support provided by the U.S. Armed Forces to the U.S. Antarctic Pro- gram.


On Jan. 16, Polar Star’s shaft seal failed


causing fl ooding in the cutter’s engine room at a rate of approximately 20-gallons per minute. The crew responded quickly, using an emergency shaft seal to stop the fl ow of freezing, Antarctic water into the vessel. The crew was able dewater the engineering space and eff ect more permanent repairs to the seal to ensure the watertight integrity of the vessel. There were no injuries as a result of the malfunction. Flooding was not the only engineering


challenge the crew of Polar Star faced during their trek through the thick ice. On Jan. 11, their progress was slowed after the one of the cutter’s three main gas turbines failed. The crew uses the cutter’s main gas turbine power to breakup thick multi-year ice using its propellers. The crew was able to trou- bleshoot the turbine fi nding a programing issue between the engine and the cutter’s 1970s-era electrical system. The crew was able to continue their mission in the current ice conditions without the turbine. “If the Polar Star were to suff er a cat-


astrophic mechanical failure, the Nation would not be able to support heavy icebreak- er missions like Operation Deep Freeze, and our Nation has no vessel capable of rescuing the crew if the icebreakers were to fail in the ice,” said Vice Adm. Fred Midgette, commander, U.S. Coast Guard Pacifi c Area in Alameda, California. The cutter refueled at McMurdo Sta-


tion Jan. 18 and continued to develop and maintain the ice channel in preparation for two resupply ships from U.S. Military


Sealift Command, Ocean Giant and Maersk Peary. The crew of Polar Star escorted the vessels to the ice pier at McMurdo Station, an evolution that requires the cutter to travel about 300 yards in front of the supply ships to ensure they safely make it through the narrow ice channel. The crew escorted the Ocean Giant to the ice pier at McMurdo Jan. 27 and conducted their fi nal escort of the Maersk Peary to Antarctica Feb. 2. The crew escorted Maersk Peary safely out of the ice Feb. 6 after supply vessel’s crew transferred their cargo. The Polar Star departed their homeport


in Seattle Nov. 30, 2017, and are expected to return to the U.S. in March 2018. The 399- foot Polar Star is the only operational heavy icebreaker in the U.S. fl eet. The cutter, which was built more than 40 years ago, has a crew of nearly 150 people. It weighs 13,500 tons and uses 75,000 horsepower to break ice up to 21 feet thick. The U.S. military is uniquely equipped


to assist the National Science Foundation in accomplishing its USAP mission. This includes the coordination of strategic inter-theater airlift, tactical intra-theater airlift and airdrop, aeromedical evacuation support, search and rescue response, sealift, seaport access, bulk fuel supply, port cargo handling, and transportation requirements supporting the NSF, the lead agency for the USAP.


Coast Guard investigates tug collision, monitors sunken boat


BOSTON — The Coast Guard is investigat- ing the cause of a tug collision that occurred about three miles south of Kennebunk, Maine, early Thursday, and monitoring the site where one of the stricken vessels sank. One of the two crewmen aboard the 40-foot tugboat Helen Louise alerted Coast Guard watchstanders Wednesday that their vessel collided with the 80-foot tugboat Capt Mackintire while they had it in tow. The Capt Mackintire had no crew aboard. A response boat crew from Coast


Guard Station Portsmouth Harbor, in New Hampshire, and the 87-foot Coast Guard Cutter Reef Shark, homeported in Boston, deployed to assist.


Once on scene, the Station Portsmouth


Harbor boat crew confi rmed there were no injuries to the two-man tug crew. The Coast Guard then escorted the tug Helen Louise, with the two people aboard, into Ports-


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mouth, New Hampshire, where it safely moored. The Coast Guard Cutter Reef Shark


established a tow with the tugboat Capt Mackintire, with intentions to bring the boat into Portland, Maine. While in transit to Portland early Thurs-


day, the Capt Mackintire began taking on water, forcing the crew to cut the towline where it sunk in about 158 feet of water. The Coast Guard is working with fed-


eral, state, and local authorities to evaluate pollution potential and respond to reports of sheening in the area where the tug sank. The investigation is ongoing.


17 March Coast Guard monitors progress of repairs for MV Martha’s Vineyard BOSTON — The Coast Guard is continu- ing to work with the Steamship Authority Sunday to determine why a ferry lost power Saturday night while en route Woods Hole from Martha's Vineyard.


After the captain of the Motor Vessel


Martha's Vineyard reported being disabled and anchored outside Vineyard Haven be- tween the East and West Chop, the Coast Guard Cutter Hammerhead and a response boat crew from Coast Guard Station Woods Hole waited on scene while the ferry awaited commercial tow. The MV Woods Hole also initially re-


sponded to assist if passengers needed to be disembarked. The MV Martha's Vineyard, with all


passengers and crew aboard, was towed by three tugs into the Vineyard Haven ferry terminal at 1:30 a.m. All 78 passengers and 10 crewmembers


were safely offl oaded, with no reported in- juries.


The MV Martha’s Vineyard is current-


ly undergoing repairs and sea trials before resuming service.


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