McAllister Towing and Transportation is one of the oldest marine towing companies in the country dating back to 1864. In 2005, tug boats were redesigned to be more powerful with twin engines that produce 4400 horsepower. The Margaret McAllister tug boat is a juxtaposition of the old style true to old tug boats and the newest technology with the tractor tug system. Her incredible power combined with her crews of up to four men keep the consumer based market thriving throughout the world.