New Waterjet Range
Advertise Here
Trending Topics:
Sunday, June 14, 2015

Ship Equipment
Ship Maintenance
Ship Systems
Worldwide Metric
Freeman Marine
Neptune Group

Home Page
About MarineTalk
Buyer's Guide
World InfoDesk
Discussion Forums
Advisory Board
Advertising Information
Submit Company Listing
Edit Company Listing
Site Map
MarineTalk Site Search:
Featured Companies

Institut maritime du Québec
Founded in Rimouski in 1944 and unique in Quebec, the Institut maritime du Quebec trains and prepares a competent work force for all fields related to the sea and transportation business. The quality of the training offered is recognize world wide.

HODT Korrosionsschutz GmbH
Anti-Corrosion products - Consulting, Service & Sale Ballasttank-protection, wire rope dressings, wire rope luibricator, soft coatings, semi hard coatings, 1-K-Polyurethan Coatings

Chamber of Commerce and Industry of Slovenia
President: Mr. Jozko Cuk, Vice Presidents: Ms Marta Kos, Mr. Samo Hribar Milic, Secretary General: Ms Rika Germ Metlika

Centre for Coastal and Marine Science
CCMS is a public sector research organisation, carrying out R&D in oceanography. Our science is carried out in 6 Core Strategic Research Programmes, see for details.
    United Kingdom

New Waterjet Range


New Waterjet Range

A new series of waterjets, the Kamewa S3, is being introduced by Rolls-Royce. This range draws on experience from the popular SII series but incorporates numerous improvements made possible by advanced design calculation methods and testing and production techniques. Kamewa S3 waterjets offer a significant increase in efficiency, which translates into reduced fuel consumption for a given workload and consequently reduced CO2 emissions. At the same time there is a reduction in size, weight and life-cycle costs.

For most applications an S3 unit one size smaller than its predecessor, will give the same performance. The result is a 25% reduction in the weight of the waterjet and its entrained water, together with a 12% smaller transom flange diameter. If the same frame size as before is specified, the Kamewa S3 offers a higher top speed; alternatively either a larger payload, or less installed power and reduced fuel consumption, while maintaining the original speed.

These advantages for the customer are achieved through a variety of developments. At the heart of the waterjet is the mixed flow pump located aft of the transom flange. The impeller of the SII has been significantly improved, in particular its cavitation margin. Optimising the whole pump unit and inlet duct gives a gain in propulsive efficiency of 2-3%, compared with SII series. An improved bearing design gives ideal running conditions for the shaft seal, reducing wear and tear, and provides close control of the clearance between the impeller and the pump housing, so maintaining the high pump efficiency over a long period.

The pump unit, nozzle and steering/reversing bucket are in stainless steel, and the bucket is now of a lighter but robust cast design incorporating an improved feedback system. Kamewa S3 waterjets can be supplied as a steering and reversing units, or as simpler boosters giving ahead thrust only, enabling the ideal system to be configured for multi-jet installations or combinations of waterjets and CP propellers. As before, the inlet duct is fabricated by the shipyard to Rolls-Royce drawings and specifications, and the waterjets are optimised for the particular installation, covering a wide variety of vessel types and operating conditions.

A range of frame sizes is being introduced progressively, covering pump diameters from 50 centimetres to 2 metres, and a power range from 2,000kW for the smallest S3-50 up to 40,000kW for the largest S3-200, the maximum power rating for very high speed vessels.


About the Company

You may also like:
Trending Technology, World Shipping & Maritime News

Latest Marine News and Technology Articles | Maritime 2015 Buyer's Guide


E-mail:  Contact Us

Copyright © 1998 - 2015 MarineTalk
Division of Link Internet Business Solutions
All rights reserved.

The reproduction, retrieval, copying or transmission of this Web site content,
in whole or in part, is not permitted without the express permission of
MarineTalk .