They're tugging (pulling); like in a tug a war contest.
Tug boats
They are called "Tug boats", or simply "Tugs".
No, tugjobs is not just a website for employment on tug boats. It also has job listings for pushboats or other maritime jobs like water taxis or ferries.
Tug boats,
ocean going liners,tug boats,scooners,yachts lunches and other water crafts.
Swamp Boat.....
Tug boats are boats that are very maneuverable and have a lot of torque their job is to position ships in harbors and tow them if they are broken down.
There are many states that offer work on tug boats but the best state to get a job in by far is Alaska.
Boats/ships don't measure speed in mph.
There are a few different types of tug boats that exist. They all serve different functions. The different types include; Seagoing, Harbor, and River.
56,972 mini tug boats
A tug is the tow vehicle used around the airport to pull containers or "Trains" of cargo wagons. I do not know who currently make those in use by FEDEX Sometimes, the vehicles used to push the planes into and out of position are also called tugs.