The Port of Baltimore’s six harbor-assist tugs push, pull and park the giant cargo carriers that visit the city. They’ve also helped keep marine traffic moving safely through the Key Br… ...

Tugboats, on the other hand, typically measure between 65 and 105 feet in length, and an average U.S. tugboat weighs in at 150 to 200 tons.

Tugboats are typically covered all around with tires hanging from the sides, front, and rear. Here's why those tires are there and what they're used for.

Next up on our list of the most powerful tugboats ever made is the KL Saltfjord, originally built by Tokyo-based Kawasaki Kisen Kaisha (K Line)'s Norwegian unit, K Line Offshore. In 2022, UK-based ...

Tugboats are not massive; no matter what type of tugboat, they get their power from consistent design elements, including how low they sit in the water -- sometimes referenced as a "deep draft." ...

Without tugboats, ships and docks wouldn't work so well. Systems would break down. Precious cargo wouldn't leave or arrive on time. Tugboats have their roles and other vessels have theirs.

Two tugboats, the Eric McAllister and the Bridget McAllister, guided the massive vessel out of the tight spaces of the dock and then released when the ship was safely in the channel.

A version of this article appears in print on Oct. 11, 2023, Section A, Page 14 of the New York edition with the headline: Tugboats, Not Trucks, Haul In Tons of Rocks for J.F.K.’s Major Renovation.

Two tugboats, the Eric McAllister and the Bridget McAllister, guided the massive vessel out of the tight spaces of the dock and then released when the ship was safely in the channel.