Ferry COHO Gets a Repower

Thursday, April 22, 2004
Elliott Bay Design Group (EBDG) announced the successful completion of sea trials, following the repower of the M/V COHO. Vessel owner and operator - Black Ball Transport Inc., retained EBDG to design and engineer the repower, and also to provide owner's representation during the yard period at Todd Pacific Shipyard.

The successful yard period and sea trials culminated over eight months of effort by various EBDG personnel, spanning the disciplines of Naval Architecture, Marine, Mechanical, and Electrical Engineering. EBDG also provided the vessel owners with comprehensive project management support, which included detailed contract specifications, project cost estimate, regulatory and vendor liaison, technical specifications for the purchase of all machinery and equipment, and owner's representation during the project's construction and testing phases. A key element to the ultimate success of the project was the high level of active participation of the COHO crew. As no one knows this vessel better then those who operate her, beginning with the planning phase, they played an integral role in supporting the entire design and construction effort.

In addition to the repower, regularly scheduled maintenance and regulatory inspections (USCG and ABS) – were all completed inside a nine week time period. Extensive project pre-planning, advanced equipment selection and purchasing, and pre-fabrication of the new machinery foundations, shaft line modifications, and numerous sections of engine room piping, were required in order to meet the owner's nine week delivery schedule.

At the heart of the project, the vessel's 1958 vintage, direct reversing Cooper-Bessemer main engines (2000 BHP at 300 rpm) were replaced with EMD 12-645 F7B turbocharged engines, producing 2550 BHP at 900 rpm, delivering power through new Falk 3485 MRV marine reverse reduction gears. Through sound engineering, experience, and diligent attention to detail, EBDG's engineers were able to utilize and build on several of the vessels' existing system designs, thus minimizing time and overall project costs. New propellers are to be designed by EBDG and installed aboard the vessel sometime later this year, in order to take advantage of the EMDs' increased HP and efficiency.

The RORO passenger ferry M/V COHO was originally designed and built in 1957-58 by the prominent Seattle naval architecture firm Philip F. Spaulding and Associates. Philip F. Spaulding and Associates later became Nickum and Spaulding Associates, which evolved over time into Elliott Bay Design Group. It was therefore quite fitting, that during sea trials in Puget Sound, the vessel's original designer, Mr. Spaulding himself, was seen in his front yard waving the American flag in salute to the gallant old lady, who has served the communities of the Olympic peninsula, Washington State, and British Columbia so well for all these years.

The sea trials and delivery went off without a hitch and the COHO returned to her normal service between Port Angeles, Washington and Victoria, British Columbia on March 12.

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

Contracts

Skangass Granted Permission for LNG Terminal

The Swedish Government (Länsstyrelsen in Dalarnas Län) has granted Skangass permission to build and operate a new Terminal for LNG (Liquefied Natural Gas) within the harbour in Gävle, Sweden.

Scrap Metal Exporter Pens Terminal Agreement

Port Canaveral Scrap Terminal LLC (PCST), a bulk ferrous scrap exporter, has signed a lease with the Canaveral Port Authority to operate a terminal in the north cargo area at Port Canaveral.

Telemar to Supply Broadband for Herm. Dauelsberg

Telemar GmbH, the German subsidiary of the Telemar Group, closed an agreement with Herm. Dauelsberg for the supply of a complete “turn-key solution” for their fleet of 18 vessels.

 
 
Maritime Contracts Naval Architecture Pipelines Pod Propulsion Port Authority Ship Electronics Ship Repair Ship Simulators 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: 0.0990 sec (10 req/sec)