Ferry Simulation Available For Shiphandling Training At MarineSafety/CAORF

Two classes of ferryboats and two fully equipped terminals have been simulated by the Computer Aided Operations Research Facility (CAORF) which is operated by MarineSafety International (MSI) at Kings Point, N.Y. These detailed computer models of vessel response and terminal characteristics can be used in conjunction with simulated tides, currents and winds to provide visual shiphandling training for ferryboat masters and mates to help prevent collisions or groundings, and to assure cost-effective service.

The smaller of the two ferries which have been modeled is a multideck, single-ended type which is propelled by twin controllable-pitch propellers and has twin rudders and bow thrusters. It is approximately 130 meters (about 426.5 feet) in length and has a loaded displacement of 5,800 tons.

A precise hydrodynamic model also has been prepared for a much larger ferry capable of carrying close to 500 automobiles. The larger ferry, 170 meters (about 558 feet) in length and over 11,000 tons dis- placement, uses twin high-lift rudders and a powerful bow thruster to make it highly maneuverable at low speeds.

One of the terminals has a clear approach with little protection from strong winds and has a strong crosscurrent.

A ferry's approach is affected by tidal currents and winds during the transition from open to sheltered waters at this terminal.

The simulated terminal has ranges, dolphins, wing walls and docking ramps. Dolphin forces on the ferry are as they are in the real world.

The second terminal that is simulated has a more difficult approach, with numerous navigational hazards.

The approach and berthing procedure at this terminal requires a 180-degree turn to permit docking stern-to. Since these turns are done within the confines of the terminal, they can become tricky in the presence of strong ebb tides and winds., especially in restricted visibility.

Since the vessels and terminals embody many elements that are common to all ferry operations, the simulations can be used by all ferry operators for training masters and mates. Risk reduction courses can be conducted for experienced or newly promoted personnel.

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Maritime Reporter Magazine, page 9,  Sep 1990 Alaska

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