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.

Norway-based Kongsberg Maritime ASA announced that it has signed an agreement to acquire Steerprop, a Finnish designer and manufacturer of azimuth propulsion systems.