Lakehead Tug Boats Inc. Operates a fleet of 4 harbour tugs at the Port of Thunder Bay and surrounding area, providing safe, reliable ship assist to domestic and International vessels. Lakehead Tug Boats Inc. owes its beginnings with its founding parent company Gravel & Lakes Services Ltd. which has been servicing the Port of Thunder Bay since 1933. Performing a large variety of marine work in the industry over the years which included ship assist, ice breaking, construction, diving, towing and salvage operations, as well as conducting operations with various forest industry companies. The operational focus changed in 1959, with the opening of the St. Lawrence Seaway, to its present focus on providing safe, reliable ship assist to domestic and international shipping companies operating in the great lakes. more... See more text