Icebreaker Ship Arrives at Uninhabited Nantucket Island: An Essential Mission in Cold New England
The icebreaker Shackle of the U.S. Coast Guard, a 19.8-meter, 63-year-old hero, made a notable visit to the port of Nantucket last Thursday. On a crucial mission to combat the severe cold wave that hit New England, the small but powerful harbor tug has been working tirelessly to keep the navigable waterways open.
Its arrival in Nantucket serves as a reminder of the importance of these ships and their crews in protecting commerce and maritime safety in extreme conditions.
The Performance of the Icebreaker and Its Crew
Departing from its home port in Portland, Maine, 10 days ago, the Shackle has been one of six WYTL class harbor tugs operating continuously throughout the northeast region. Before Nantucket, the ship had already broken ice in strategic ports such as Boston and New Bedford, ensuring navigability in vital areas.
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Sailor Christian Dipaolo, the officer in charge of the Shackle, highlighted the impressive capability of the vessel. “It does very well in the ice,” Dipaolo stated. “With a draft of about 3.6 meters, it can break up to 23 centimeters of ice at this moment.
It is 63 years old, and these boats have been around for a long time. There are six of them spread throughout the northeast to assist in this mission. We have some breaking ice right now in New York, on the Connecticut River, in Boston, and even in Maine.”
The engineering of the Shackle allows it to break ice with both its reinforced hull and its wake, demonstrating its effectiveness even after decades of service. On Thursday, the ship cut through the ice easily near Straight Wharf and the Nantucket Marina, a sight that has become rare for local residents.

The Effectiveness of the Shackle in the Region and the Historical Context of Nantucket
The need for the presence of the Shackle in Nantucket was proven last weekend when ice prevented Hy-Line Cruises from conducting all its trips to the island on Saturday. Although the Steamship Authority was able to maintain its operations, the situation reinforced the urgency for ice-breaking action.
Nantucket’s port chief, Sheila Lucey, who previously served as the chief of the Coast Guard station at Brant Point, revealed that it had been 12 years since a Coast Guard icebreaker was sent to the island.
In 2014, a larger 42-meter icebreaker had been assigned, and before that, the island received similar assistance in the winter of 2004. These intervals highlight the exceptional nature of current conditions and the importance of the Shackle‘s mission.
Nantucket, although today a charming tourist destination known for its historic mansions and lighthouses, has a rich maritime history. Between 1750 and 1840, it was the world’s leading center of the whaling industry, with the port serving as the base for the famous ship Essex, which inspired Moby Dick.
The island, primarily accessible by ferries from Hyannis or New Bedford, in Cape Cod, is recognized as a National Historic District. The presence of the Shackle today connects the island’s maritime past with the ongoing need for resilience and maintenance of maritime routes.

The Importance of the Crew and the Unusual Nature of the Mission
The Shackle‘s six-person crew, under Dipaolo’s command, has demonstrated an exemplary team spirit. Although they usually sleep in cramped quarters below deck, the crew had the opportunity to enjoy better accommodations at some of their recent stops. In Nantucket, they were warmly welcomed by Chief Warrant Officer John Lowell and his team at the Brant Point Coast Guard Station.
Dipaolo praised his crew: “The crew has been impeccable. It’s a small boat, and when you put seven people on board, you kind of become a family. We are a small crew, so we strive to make sure everyone is involved in this mission.”
He also emphasized the unusual nature of the operation: “This type of vessel is generally designed for inland harbor areas, to stay close to home, this type of situation, so seeing us navigating so far south to deal with ice is truly unprecedented.”
The visit of the Shackle to Nantucket is not only a demonstration of the Coast Guard’s ability to keep New England’s waterways open but also a tribute to the dedication of its crews, who face the most challenging conditions to ensure that communities like Nantucket remain connected and safe.

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