Tunnel Thrusters

Thrusters Overview

Improved Vessel Control and Easier Maneuvering

Initially used in the bows of ferries and tugs, these versatile control devices soon became popular in offshore oil servicing boats and larger ocean-going craft. They permit unassisted maneuvering alongside of oil rigs, vessels, loading platforms and docks - and provide precise control at slow speeds through locks, narrow channels and bridges. Today, Thrusters are found in applications all over the world where precision vessel control is needed.

The Tunnel Thruster is installed athwartship in a tunnel low down in the bow. Sometimes a second unit is installed in the stern; for dynamic positioning and station-keeping, as many as five units have been used in a single application.

With 180 thrust --90 to either port or starboard -- the Thruster gives added maneuverability and control for docking and slow-speed operations. Because the thruster is relatively small in its awthwartship dimension, it can be installed in a ship with fine entrance lines and can be located in the optimum position for maximum turning moment. Complete overhaul, maintenance and removal of the mechanism is often accomplished without dry-docking.

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