The U.S. Army Corps of Engineers’ Detroit District in May took delivery of two new icebreaking tugboats, the H.J. Lawson and the R.J. Pearce, which are now plying the St. Marys River in Michigan. The vessels’ primary responsibility is to keep the Soo Locks in Sault Ste. Marie, Mich., free of ice. They also tow barges and assist in maintenance operations.

Curtin Maritime, Long Beach, Calif., announced on that Snow & Co., Seattle, has launched the Tiger C, the second battery-electric ship-assist tug in an eight-vessel series.