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 July 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

News

AEU Presents Safety Awards

The American Equity Underwriters, Inc. (AEU) presented its 2014 Safety Awards at the annual American Longshore Mutual Association, Ltd. (ALMA) Conference on July 19, 2015, in Key Biscayne, Fla.

UK Navy Chooses Effer Crane Again

Cranes manufacturer Effer informs its marine crane has recently been installed aboard the U.K. Royal Navy’s patrol vessel HMS Mersey.   The new 5s 275M crane,

US Senate Energy Panel Votes to Lift Oil Export Ban

The U.S. Senate Energy Committee on Thursday passed a bill that would lift a decades-old ban on the export of crude oil.   The 22-member panel passed the bill

Vessels

UK Navy Chooses Effer Crane Again

Cranes manufacturer Effer informs its marine crane has recently been installed aboard the U.K. Royal Navy’s patrol vessel HMS Mersey.   The new 5s 275M crane,

RoRo Launched for Royal Bahamas Defense Force

A Damen RoRo 5612 was launched this month at Halong Shipyard in Vietnam, the shipbuilder announced. The RoRo is one of nine Damen vessels ordered by the Royal

Fire-stricken Icebreaker Overhauled

SENER concludes the Almirante Irizar icebreaker engineering works for re-outfit and overhaul   SENER reports it has completed the engineering works relating to

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Navigation Port Authority Salvage Ship Electronics Ship Repair Ship Simulators Shipbuilding / Vessel Construction Winch
rss | archive | history | articles | privacy | 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: 0.1998 sec (5 req/sec)