Page 62: of Maritime Reporter Magazine (April 2001)

Propulsion Report tion, but with two ruder blades project- ing from it. The configuration enables two modes of operation, passive and active. The passive mode is used for cruising/high speed maneuvering, and in this mode only the rotor casing performs partial rotations in both directions, thus the locked rudder blades are adjusted relative to the flow and act like conven- tional rudders. For slow speed maneu- vering the VCR uses the active mode.

The uniform rotation of the rotor casing is superimposed by an oscillating move- ment of both blades around their own axis. In essence, this mode allows for an identical thrust to be generated in all directions.

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Rolls-Royce Delivers Largest

Steerable Water Jet

The first pair of Kamewa 200 SII water jets, and two smaller units (140

SII water jets), are currently being installed on a 459 ft. (140 m) fast ferry at Alstom Leroux Naval's yard in

France. Dubbed the world's largest steerable water jet, this Kamewa 200 SII unit has an inlet diameter of 200 cm.

The vessel, a Corsaire 14000 design steel-construction, monohull ferry will be driven by a combination of gas tur- bines and diesel engines, producing a cumulative 66,200 kW and a speed of 40+ knots. The ferry is being built for

Greece's NEL Lines, and will enter ser- vice able to carry 1,800 passengers this summer.

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STN Atlas Offers New Range

Of Shaft Alternators

STN Atlas Marine Electronics has extended its range of shaft alternators for supplying mains power driven via ship's engine with the introduction of a new series of high voltage units capable of providing power ratings from 4,000 to 10,000 kW.

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MAN B&W Targets Mid-Size

Containership Niche

While much of the innovation in the containershipping segment has been focused on ever-larger ships, MAN

B&W has made a point of ensuring that its engine ranges best suited for the medium-size containershipping segment — up to 3,000 teu — maintains its tech- nological edge to ensure ship owners get the power, economy and efficiency they demand. While the larger containership- ping segment has garnered a well- deserved portion of attention given the technological challenges, the engine maker notes in its new publication "Propulsion of Medium Sized Contain- erships" that the market for new con- tainership construction is expected to grow seven to eight percent per annum, at least for the next five to 10 years.

While the market for ultra large contain- erships will undoubtedly grow, so too will the demand for smaller, feeder car- riers, as the number of ports able to han- dle the largest ships will still be limited.

Another factor boding well for the segment is the age of the fleet, with many ships approaching 35 to 40 years old and heading for scrapping. Some analysts estimate a need for between 100 to 120 ships per year in the 1,000 to 3,000 teu range. To fulfill the tremen- dous power need, MAN B&W offers its

MC engine program covering the power span from 1,600 to more than 68,500 kW. The latest additions to the range include the L60MC-C and the L70MC-

C specifically targeting the RoRo and the medium-sized container vessel mar- ket. For a copy of the technical publica- tion from MAN B&W

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Maneuver.. .Propel.. .Position

Harbormaster thrusters and outdrives are found around the world in ships, boats and barges where economical performance is required.

For unassisted maneuvering in tight quarters. For easily-moved, deck-mounted propulsion.

For critical dynamic positioning.

For precision vessel control.

Harbormaster Marine products are designed to customer specification and built with utmost care and highest quality.

They provide years of durable service and are backed by a reliable support system.

Tunnel Thrusters 100 to 2000 HP

Fast world-wide support!

If you operate a Harbormaster or

Murray & Tregurtha product anywhere in the world, we can provide spare parts and on-site field service. Call us first!

Outboard and through- the-hull azimuthing drives 50 to 1500 HP

Harbormaster

Harbormaster Marine, Inc. 31777 Industrial Road

Livonia, Ml 48150 USA (734) 425-1080 Fax (734) 425-1850

Website: http://www.harbormastermarine.com

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