Rolls-Royce Commercial Marine has been contracted to upgrade Interlake Steamship Company’s tug Dorothy Ann. The 124-foot, 7,200-horsepower Z-drive tug is the largest Z-drive ATB tug built to date in North America and
Great Lakes Shipyard, Cleveland, Ohio, has laid the keel of a 60-foot work boat for the Port of Milwaukee. The city of Milwaukee, Wisconsin awarded the contract in June 2011. The vessel
Ocean Marine Services, Inc., Nikiski, Alaska, recently purchased the 1998-built, 194 ft offshore support vessel Sabre from Gulf Coast creditors, according to shipbroker Marcon International, Inc., Coupeville, Wash. The U.S. flag Sabre
Donjon Marine Co., Inc., along with partner SEACOR Holdings Inc. have announced the completion of the tugboat, Ken Boothe, Sr. The 10,700 horsepower tug will work as the barge unit of an
