Page 26: of Maritime Reporter Magazine (January 2010)

26 Maritime Reporter & Engineering News

Gladding-Hearn Shipbuilding, Duclos

Corporation, has begun construction of a 350-passenger, high-speed ferry for the Woods Hole, Martha's Vineyard and

Nantucket Steamship Authority in

Massachusetts.

The all-aluminum catamaran, designed by Incat-Crowther in Sidney,

Australia, is 155 x 40 ft. (47 x 12 m), drawing 5.3-ft. (1.6 m). The vessel fea- tures Incat Designs' "S-Bow" hull shape to provide additional reserve buoyancy during very large seas. "The S-Bow hull shape has lower resistance and better seakeeping than a conventional catama- ran hull," said Peter Duclos, Gladding-

Hearn's president. "This hull has excel- lent directional stability and is more tol- erant of changes in trim and displace- ment."

The Steamship Authority's second fast ferry will be powered by four MTU 12V-4000M70 diesel engines, each delivering 2331 bhp at 2,000 rpm and propelled by a Hamilton HM721 water- jet through a ZF4650D reverse-reduc- tion gearbox. Equipped with a VT/MDI active interceptor motion control sys- tem, the vessel's top speed, in moderate sea conditions, is expected to reach 38 knots from the four engines (33 knots from three engines) when fully loaded with a deadweight of 51 metric tones at 100% MCR. Electrical power is sup- plied by two Northern Lights 175 kW generators.

With interior sound levels of 72 dba, the main and upper cabins will be fea- ture Beurteaux Ocean Contour seats.

Additional accommodations include five heads, heating and air-conditioning, a digital audio/visual public address sys- tem with nine displays throughout the vessel, and a snack bar in the main cabin. A separate luggage room will carry more than 14,000 pounds of lug- gage and 24 bicycles.

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Passenger Vessels

Gladding-Hearn Starts Building New Ferry

December 1, 2005, was the christening and launching ceremony for the big cruise ferry ordered by Tallink at Aker

Yards shipyard in Rauma. The contract, worth more than $165 million, was signed in October 2004. The vessel will start cruises from Helsinki to Tallinn next spring. The vessel was christened

Galaxy by Ms. Johanna-Iisebel Järvelill, daughter of Member of the Board of

Tallink, Mr. Kalev Järvelill.

It will be one of the biggest cruise fer- ries in the Baltic Sea, having capacity for 2,800 passengers. When delivered in spring 2006, the vessel will start regular cruises between Helsinki and Tallinn.

On that route now, the cruise ferry

Romantika, delivered from Aker

Finnyards in spring 2002, will start cruising between Stockholm and Tallinn together with the sister ship Victoria, built in Rauma in 2004. In addition to

Galaxy, Tallink has ordered a fast pas- senger day ferry from Aker Yards; and signed option agreements for both ves- sels. MS Galaxy is designed to carry passengers, private cars and freight units, and has 1,130 lane meters of vehi- cle deck space. The vessel has a length of 212 m, a beam of 29 m and a gross tonnage of 48,300. Propulsion by four diesel engines totaling 26,240 kW will provide a service speed of 22 knots.

Classification of the vessel is to the highest ice-class - 1 A Super.

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Aker Yards Launches Tallink's Galaxy

Acoustic Assessment of

Martha's Vineyard Ferry

Noise Control Engineering, Inc. (NCE) recently completed sound and vibration analyses of the new 255 ft., double-ended ferry for the Steamship

Authority (SSA). The ferry will oper- ate between Woods Hole and the island of Martha's Vineyard in Cape Cod,

Mass. The ferry is being designed and built by VT Halter Marine in

Pascagoula, Miss. NCE has conducted three major studies for Halter. First an airborne noise prediction was per- formed using the new Designer-

NOISE, noise prediction software, recently released by NCE and Proteus

Engineering. NCE has also calculated the sound levels from all major HVAC systems in the ferry. Finally, NCE completed a full hull and superstruc- ture Finite Element Analysis. This analysis was performed using MAE-

STRO and NE/NASTRAN finite ele- ment codes. The assessment evaluated compliance with ABS "COMF" vibra- tion requirements from the "Guide for

Passenger Comfort on Ships". NCE specializes in shipboard noise and vibration control.

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