Page 12: of Maritime Reporter Magazine (July 1996)

PROPULSION UPDATE

New Generation Of Propulsors Chosen For New Ferries pair of 2,200-kW Contaz units.

For more information on KaMeWa

Circle 14 on Reader Service Card

Main Particulars of Double-Ended Ferries

Propulsion Diesel Electric 4 x 3,000-kW type ABB Sami megastar

Propulsion units Aquamaster-Rouma 4 Contaz propulsors

Length 465.8 ft. (142 m)

Breadth (over fender) 83.3 ft. (25.4 m)

Mox. draft 19 ft. (5.8 m)

DWT 2,400

Passengers 90

Cars, upper deck 126

Aquamaster-Rauma of Finland has secured an order for eight 3,000-kW Contaz propulsors, to be fitted to a pair of train/car ferries recently ordered by DSB Rederi AS in Denmark. The order is viewed as a milestone by Aquamaster-

Rauma, as it is an important step in establish- ing its propulsion system as a well-known brand.

The double-ended "drive though" passenger/car and railway ferries are built for service around the clock on the ferry route between R0dby in Denmark and Puttgarden in

Germany. The ships will be built for DSB

Rederi AS by 0rskov Staalskibsvaerft,

Denmark, and are scheduled to be delivered in

May and October 1997. The electrically driven propulsors are powered by ABB's Sami

Megastar technology.

The propulsion system is designed for quick maneuvering and operation in all weather con- ditions. The normal service speed will be 16.5 knots, providing a crossing time of 44 minutes.

The maximum service speed of 18.5 knots will provide a 39-minute crossing time.

The Contaz propulsors will be fitted at the sides of each end of the ship, making it possible to obtain an optimum hull form and to fit a spe- cially designed bulbous bow at each end. Based on the model tests, this concept, together with the high efficiency of contra-rotating propellers, is expected to exceed savings as much as 20 per- cent in fuel consumption compared with a con- ventional design. An additional benefit is that the building costs of the ship can be reduced with lower power and noise insulation demand.

The design is based on contra-rotating pro- peller technology, which is known for high pro- peller efficiency, as well as a low noise and vibration level. The Contaz propulsors are designed with a streamlined body form to allow higher speed than traditional thrusters.

The first new generation Contaz units were delivered at the beginning of the year for a

Norwegian platform supply vessel to be sup- plied to DOF Management by Brattvaag

Shipyard next summer. The vessel features a 2 Contaz 2 Contaz 2x3000 kW 2x3000 kW

New Medium-Sized Containership

Design Nears Completion

A flexible new containership design, which maximizes payload and stability with only negligible increases in specific resistance/power requirements, is set to be debuted by a U.S. com- pany

Halter Marine Inc. of the

Trinity Marine Group, in conjunc- tion with the Advanced Research

Projects Agency (ARPA) and the

U.S. Department of Defense (DOD), is nearing completion of the design development of the innovative, medium-sized con- tainership. The Trinity Sea

Shuttle design incorporates inventive concepts intended to make it a profitable vessel throughout its life cycle. "With the increasing requirement for medium-size, high payload con- tainerships to accommodate the medium and short-length ocean and inter-island routes, the

Trinity Sea Shuttle, with its unique flexibility in design, mod- ular construction, and shallow draft and cargo capacity, fills the void nicely," said John Dane III, president, Trinity Marine Group.

The basic design measures 402 ft. (123 m) long and has a maxium capacity of 946 TEUs. A "stretch" version measures 490 ft. (149 m) long and has a capacity of 1,234

TEUs.

Designed for the international market, the Sea Shuttle is avail- able in several configurations including various length and beam dimensions, and either flush deck or hatchless versions.

The vessel was purposely designed to be flexible and modu- lar, so a variety of owner prefer- ences in the vessel configuration and equipment options can be accommodated.

The design of the vessel permits a high degree of flexibility in the final configuration, such as an optional 88-ft. (27-m) mid-body plug, aft ramps for RoRo applica- tions, multiple accommodation layouts, reefer plugs and loading flexibility.

For more information on the new containership design

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Stolt Parcel Takes Delivery Of

Stolt Innovation From Danyard

Stolt Parcel Tankers, Inc., part of the Stolt-

Nielsen SA group, has taken delivery of M/T Stolt

Innovation, the first in a series of ten 37,000-ton

Innovation-class chemical parcel tankers, from the

Danyard shipyard in Frederikshavn, Denmark.

Formally commisssioned on May 29, the new ship incorporates features which set new standards of environmental protection, safety and operating efficiency. Seven of the Innovation-class ships are being built by Danyard, while the other three will be constructed by the Societe Nouvelle des

Ateliers et Chantiers de I'Atlantique du Havre (SNACH) yard in Le Havre, France. The remain- ing nine tankers in the series will be delivered at regular intervals through the end of 1998.

M/T Stolt Innovation has 42 integral and four deck cargo tanks, all constructed of solid stainless steel, and all fitted with separate pump and pipeline and able to handle hazardous and cor- rosive cargoes (IMO Type 1). M/T Stolt

Innovation is thought to be the first chemical tanker to be fitted with medium-speed, diesel-elec- tric propulsion instead of a conventional slow- speed diesel propulsion.

Stolt-Nielsen SA is a leading provider of trans- portation services for bulk liquid chemicals, edible oils, acids and other specialty liquids. 14 (^L^ Telenor Maritime Reporter/Engineering News