McAllister Towing has brought on a new tugboat to handle big boxships coming in and out of US port of Charleston, North Carolina.

The 6,770-bhp Capt. Jim McAllister (built 2019) is the New York-based owner's fourth tug in a series of four 80 metric-tonne bollard pull tugboats and 33rd tractor in its 57-strong fleet.

The tug is powered by 3516E Tier IV Caterpillar engines with twin Schottel SRP4000FP units able to achieve 82.5