Page 44: of Maritime Reporter Magazine (April 2006)

44 Maritime Reporter & Engineering News dling tower, heavy-duty deck crane and large working deck area to enable con- tainerized tanks and equipment to be transported.

Well intervention and ROV activities translate into a substantial shipboard complement, such that accommodation will be provided in single staterooms for 95 personnel. Stringent Norwegian safe- ty regulations have stipulated that two free-fall lifeboats must be carried on each side of the vessel.

Also equipped with diesel-electric power and propulsion, a pair of new- builds of the UT787CD-type contracted by Island Offshore at Aker Langsten will each combine a deepwater anchor- handling capability with the strictest environmental class.

Offering a bollard-pull capacity of 230-tons, the design includes a moon- pool and A-frame, and will allow the positioning of items of equipment of 150-tons at depths as great as 2,000-m.

Precise placement of equipment and anchor spreads will benefit from onboard facilities for ROV inspection, and an integral hangar will accordingly be provided for a work-class ROV.

An impending 2006 entrant to the

Norwegian fleet, a type UT712L anchor-handler contracted by

Fosnavaag-based Olympic Shipping, features a host of new Rolls-Royce solu- tions, including improved deck working arrangements, DP2 dynamic position- ing, V-type Bergen main engines, and the seminal installation of a rim-drive electric tunnel thruster.

The 12,000-kW design has been con- figured and engineered to undertake mainstream duties in deepwater anchor- handling and towing, along with supply and standby work.

Her station-keeping and vessel motion properties are of an order that reflects the industry's most demanding stipula- tions. Rolls-Royce's endeavors in devel- oping highly mechanized and compre- hensive systems for handling ropes, wires, chains and shackles, which can be under great tension, have found new expression in Olympic's new ship, which is taking final shape at Aker's

Soviknes yard. She has been specified with the equipment supplier's Safer

Deck Operation package, embracing cranes and manipulators, towing pins, shark jaw, centering system and pennant wire coiler.

The UT712L newbuild will provide an early reference for the powerful Bergen

B32:40V12P long-stroke, medium- speed engine. The installation comprises two such engines, driving twin, nozzled propellers, to give an anticipated bollard pull of some 180-tons, and an economic free-running speed in the range of 13-15 knots. The 883-kW swing-up azimuth thruster fitted forward will not only enhance station-keeping and maneuver- ing performance but also augment bol- lard pull, to give a maximum of approx- imately 190-tons.

Olympic Shipping is the first owner to apply Rolls-Royce rim drive technology in the shape of the RT1600 Kamewa

Ulstein Rim Drive thruster. The 800-kW unit will be installed in the aft skeg, complementing a conventional tunnel thruster.

The owner was attracted by the prom- ise of operational benefits in terms of improved overall efficiency, reduced noise and vibration, and easier servic- ing. The technology has been developed in Norway over a period of several years by Rolls-Royce in Ulsteinvik in collabo- ration with Smartmotor of Trondheim, and will be used for a widening range of rim tunnel thrusters and other types of propulsors.

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