The 105-foot Harbor Class tractor tugs are U.S.-flag vessels designed for ship assist and escort. These tugs feature Voith Schneider twin cycloidal propulsion and a hydrofoil-shaped skeg that provides for greatly improved steering, control and seakeeping ability when the vessel is running at high speeds in the skeg-first direction. In addition, the unique hydrodynamics of the hull result in increased tons of steering and braking force, which are available to assist or control a vessel at higher speeds.
Crowley innovations incorporated into the design of these tugs include a pilothouse control console arranged for maximum visibility and ease of use.
All Crowley tugs are fully instrumented, with pilothouse-controlled engine rooms, and are equipped with the latest in navigational and communications technology.
Vessel Design Portfolio
Crowley Tug Participates in Blackout Test with Ultra-Deepwater, Semisubmersible Noble Jim Day Rig in U.S. Gulf of Mexico
Crowley Heavy Deck Strength Barge Helps Launch U.S. Navy’s Newest Littoral Combat Ship, USS Montgomery
Crowley Opens Full-Service Project Management and Logistics Solutions Office in Singapore
Crowley Christens New Ocean Class, Dynamic Positioning 2 (DP2) Tugboat in Houston – Ocean Sky
75 Crowley Vessels Honored with Jones F. Devlin Awards in Recognition of 510 Combined Years of Safe Operations