The 15m wind farm support and crew transport catamaran
Rhoscolyn Head, one of the fast growing fleet of UltraJet-fitted vessels deployed by Turbine Transfers, part of Holyhead Towing (Credit: Ultra Dynamics).
new generation of 500tonnes vessels. With a growing population of
equipment worldwide, the company has recently implemented a restructure and reinforcement of its organisation. Up to delivery of the equipment from the factory, a dedicated project group oversees all facets, including contacts with subcontractors and the classification society. Once the waterjets have been shipped, an
aſter-sales group takes care of all contacts during installation at the yard, start-up, sea trials and vessel delivery. Tis team will lend its knowledge and experience to the yard to ensure the most suitable installation arrangements in the interests of long-term product performance and service life. The after-sales group also handles training and is responsible for warranty issues as well as dealings with customers once the guarantee has expired. Besides extended warranties, the various after-sales offers include exchange and conversion packages, such as sensor and control system upgrades, and renovation of worn-down impellers. Rolls-Royce Marine has strengthened its
stake in the Middle East market by way of a contract from the United Arab Emirates’ navy for 24 lightweight waterjets. Each of 12 fast patrol boats will be equipped with two FF600 waterjets, to ensure a maximum
Ship & Boat International July/August 2010
speed of more than 35kts. Te newbuild series is under construction by Abu Dhabi Ship Building, and the first-of-class is due to be commissioned in 2012. Interceptors fitted on the waterjets
will confer a tighter turning capability, improved stability and reduced overall fuel consumption. Rolls-Royce’s Incorporated Interceptor Control (IIC) arrangements obviate the need for interceptors to be purchased, installed or controlled separately, a feature which can yield savings in the shipbuilding process. Rolls-Royce waterjets have also
been fitted in a new generation of fast patrol boats set to play an integral role in modernising Caribbean maritime security. Deliveries of six 30m aluminium craſt built by Austal Ships for the Trinidad and Tobago Coast Guard were completed at the start of this year. Capable of speeds greater than 40kts, these coastal guardians each employ two MTU diesels producing total power of 3260kW, transformed into propulsive effect by two 56A3 waterjets from Rolls-Royce’s Kamewa stable. The waterjets feature advanced,
mixed-flow pump geometry, yielding higher speeds, lower fuel consumption and the capability to operate in shallow, debris-laden waters. Advanced electronic controls confer manoeuvring precision at
high and low speeds. At the upper end of the power band,
Rolls-Royce Kamewa S3-series waterjets will have a new Mediterranean showcase by way of the installation in Virtu Ferries’ 107m high-speed catamaran Jean de la Valette, due to be delivered in August. Destined for the traffic between Malta and Sicily, the ro-ro equipped vessel has been specified with four MTU 20V8000 M71L main engines of 9100kW apiece driving four 125S3 waterjets, two in each hull. Te jets will provide the thrust needed to ensure a 39kt service speed. For Austal’s new design of a 102m
trimaran passenger/vehicle ferry, constructed to the builder’s own account and ready for final customisation to a buyer’s requirements, waterjets from Wärtsilä’s LJX series have been adopted. Tree 20V8000 M71L high-speed MTU diesels drive three LJX1300 propulsors through ZF 53800 gearboxes, to allow schedules to be maintained at speeds of up to 39kts. LJX waterjets were chosen for their improved cavitation margin, bearing on efficiency in performance. Incat’s specification for its recently proposed new design of 85m wave-piercing catamaran ferry also includes four LJX-series waterjets, configured for steering and reverse. SBI
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