Study Helps Advance Hybrid Electric SWATH Design

Posted by Eric Haun
Tuesday, December 10, 2013
CTruk's first SWATH OWSV built in 2013 (CWind Astute)

A feasibility study around a hybrid powertrain SWATH, commissioned this year by CTruk, has given the company further impetus in its ongoing development of a hybrid electric offshore wind support vessel design.

The study was based on the CTruk CWhisper SWATH, a 20m craft fitted with twin Cummins QSM-11 marine diesel engines and Rolls-Royce Kamewa FF41 waterjets. The feasibility report concluded that the implementation of a parallel hybrid solution would result in substantial operational cost savings on this particular vessel, an attractive prospect coupled with the already well-documented advantages of the SWATH hull form in offshore wind operations.

Marine craft in the offshore wind support sector typically have two major transit periods each day, with the rest of their time at sea spent idling or slow maneuvering with the occasional high speed peak. This usage profile makes OWSVs ideally suited to a hybrid configuration. The introduction of an electric motor to handle the load during low power demand periods allows the boat’s engines to be turned off or run as generators at a more optimized power rating. As well as the obvious fuel savings incurred, this reduces hours and wear on the engines, a key point for commercial marine vessels which typically require engine services every few weeks. The life expectancy of an engine could be increased dramatically if the craft ran electric during idling downtime, as these craft can idle for up to 50% of a shift offshore. Resulting reduced maintenance and direct costs also represent significant savings.

CTruk builds high-speed vessels using resin-infused FRP composite, a robust material that is around 40% lighter than aluminum. These vessels are therefore well able to take the extra weight of the additional drive train needed for hybrid operation, a small price to pay for the resulting greatly reduced running costs possible over the vessel’s lifetime. The unique belt drive transmission system currently being fitted on CTruk’s latest SWATH build will be included on all subsequent CTruk SWATH vessels, future-proofing these craft by allowing for the retrofitting of a parallel hybrid solution.

Jim Cutts, director of engineering at CTruk commented, “CTruk has always strived to offer more cost-efficient workboats and the reduced fuel consumption of our lighter, composite vessels has been a key factor in achieving this aim. We envisage that the significant further reduction of fuel usage on a hybrid electric vessel will see CTruk’s product range thrust forward into the future of offshore wind construction and O&M, a future where efficiency and cost reduction reign.”

ctruk.com
 

Maritime Reporter November 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Marine Power

PIRIOU Delivers 53-meter FSIV

French boat builder PIRIOU has delivered the 11th of its 53- by 10-meter Fast Supply and Intervention Vessels (FSIV) to Suisse Outremer AG, to be operated by ABC Maritime AG.

Becker Marine Delivers Rudder for Largest Containership

Becker Marine Systems delivers rudder for the largest container ship in the world   At 19,000 TEU, the largest container ship in the world is now picking up speed

GE Gas Turbine Powers Australia’s Largest Warship

GE Marine’s LM2500 aeroderivative marine gas turbine now powers the Royal Australian Navy’s (RAN) recently commissioned HMAS Canberra Landing Helicopter Dock (LHD) ship,

News

Wrecked Bulker’s Bow Refloated, Scuttled off S.Africa

TITAN Salvage, Crowley Maritime Corp.'s Houston-based marine salvage, emergency response and wreck removal company, has refloated and scuttled the largest section of the wrecked bulk carrier, Smart.

Transpacific Container Shippers Plan Price Rise

A container shipping organisation urged companies on Wednesday to raise Asia-U.S. freight rates by at least $600 per 40-foot container (FEU) from Jan. 15, corresponding to an increase of 26.

DP World: Shareholders Back EZW buy, London Delisting

Shareholders of DP World have approved buying Economic Zones World from its majority shareholder and also backed the port operator's delisting from the London Stock Exchange,

Vessels

NASSCO Opens Bremerton Repair Facility

General Dynamics NASSCO celebrated the grand opening of its new location in Bremerton, Wash., yesterday. The facility will support the company’s recently-awarded contract to repair and maintain U.

MacGregor RoRo Cargo Access Package For Ferry

MacGregor, part of Cargotec, has received a contract from German shipbuilder Flensburger-Schiffbau-Gesellschaft (FSG) for a comprehensive RoRo cargo access equipment package.

Damen Responds to Evolving Fishing Practices

Maaskant Shipyards Stellendam meets fishing sector’s growing needs by performing electric pulse fishing conversions   As European fishing policies evolve, so fishing techniques advance.

 
 
Maritime Standards Naval Architecture Navigation Offshore Oil Pipelines Salvage Ship Repair Shipbuilding / Vessel Construction Sonar Winch
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.2173 sec (5 req/sec)