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NATIONAL HARBOR, Md.—Following Bollinger Shipyards’ acquisition of Halter Marine last November, the shipbuilder is expected to begin working on production-related prototype efforts soon that will help inform the ongoing detailed design of the first new U.S. heavy polar icebreaker in decades and hopefully put the company in a position to give a timeline late this summer or early fall on when construction of the ship will begin, a senior Coast Guard official said this week. The prototype modules will include…
