High Quality Content by WIKIPEDIA articles! USCGC Mobile Bay (WTGB-103) is an active Ice cutting Tug under the direction of the United States Coast Guard. Her homeport is located in Sturgeon Bay, Wisconsin. She is one of two ships in her class that has been equipped with a 120-foot Aids-to-Navigation barge operating on the Great Lakes. The vessel was specifically designed to carry out ice cutting missions, but also carries out missions in Search and Rescue, Environmental Pollution Response, Maritime Law Enforcement and Homeland Security.