Page 49: of Marine News Magazine (October 2010)

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www.marinelink.com MN 49 er of its truckable tug boats. The ves- sel has been shipped to a project in up-state New York. This tug boat was constructed in 30 working days which was done in half the time of

Mid America’s last tugs. The J-KRAB is the seventh vessel to leave the yard so far this year. John Deere 6081's give the vessel 660 hp.

Specifications:

Length . . . . . . . . . . . . . . . . . . . . . . . . .25.5 ft

Beam . . . . . . . . . . . . . . . . . . . . . . . . . . .14 ft

Hull depth . . . . . . . . . . . . . . . . . . . . . . . . .5 ft

Max draft . . . . . . . . . . . . . . . . . . . . . . . .3.3 ft

Propulsion . . . . . . . . . . . . . . . . . . .Twin screw

Twin disc transmissions . . . . . . . . . . .5075 SC

Propellers . . . . . . . . . . . . . . . . . . . . . . . .34 in

Propeller Shafts . . . . . . . . . .3 in stainless steel

Vessel weight . . . . . . . . . . .Approx. 41,000 lbs

Tug Boat Oyster Creek

Chesapeake Shipbuilding launched the new tug boat Oyster Creek. The

Oyster Creek is the fifth of six tug- boats that Chesapeake is building for

Vane Brothers of Baltimore, Md. The tug will now go into its outfitting stages. Each of the six tugs are 94 ft long and have a 32 ft beam. They are equipped with a single drum hydraulic winch from JonRie of N.J. and twin Caterpillar 3512 main engines capable of producing a com- bined 3,000 hp. The Oyster Creek was designed by naval architect

Entech & Associates Inc. and

Chesapeake Shipbuilding Corp.

Specifications/Main Particulars:

Length . . . . . . . . . . . . . . . . . . . . . . . . . .94 ft

Beam, molded . . . . . . . . . . . . . . . . . . . . .32 ft

Draft . . . . . . . . . . . . . . . . . . . . . . . . . .11.5 ft

Depth, molded . . . . . . . . . . . . . . . . . . .13.3 ft

Towing winch . . . . .JonRie Intertech Series 500

Construction . . . . . . . . . . . . . . . .Welded steel

Displacement . . . . . .331 Long Tons (light ship)

Main engines . . . . . . . . . .2x Caterpillar 3512C, . . . . . . . . .1,500 hp each at 1,800 rpm, Tier II

Generator . . . . . . .2x John Deere 6068, 99 kW

Shafts . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 in

Propellers . . . . . . . . . .2x 4-blade 87 in x 63 in,

Steering . . . . . . . . . . . . . . . . . .Huber elec/hyd

Sewage . . . . . . . . .Owens Kleen Tank Model B

SeaArk Delivers Vessel to National Park Service

SeaArk Marine, Inc. has delivered a 42-ft Dauntless class vessel to

Cumberland Island National Seashore in St. Mary’s, Ga. The vessel,

Loggerhead, is tasked with transporting park rangers, personnel and light equipment from St. Mary’s to Cumberland Island and jurisdictional waters within the Park Service. The SeaArk 42-ft Dauntless is constructed of all- welded marine grade aluminum. The design incorporates a two-man pilot- house and a 20-passenger aft crew cabin. The Loggerhead will be replacing the current service vessel, General Greene, also built by SeaArk Marine.

Specifications/Main Particulars:

Length, o.a. . . . . . . . . . . . . . . . . . . . . . .42 ft

Length, w.l. . . . . . . . . . . . . . . . . . . . . . .38 ft

Beam . . . . . . . . . . . . . . . . . . . . . . . . . . .14 ft

Draft hull, max . . . . . . . . . . . . . . . . . . . . .4 ft

Dead rise . . . . . . . . . . . . . . . . . . .22 degrees

Displacement . . . . . . . . . . . . . . . .28,601 lbs

Fuel . . . . . . . . . . . . . . . . . . . . . . . . . .500 gal

Speed, max . . . . . . . . . . . . . . . . . . . . .33 kts

Speed, service . . . . . . . . . . . . . . . . . . .30 kts

Range . . . . . . . . . . . . . . . . . . . . . .300 miles

Main engines . . . .Twin-C-9 Caterpillar diesels

Marine gears . . . . . . . . . . . . . . . . . .Twin disc

Navigation equipment . . . . . . . . . . . . .Furuno

Radios . . . . . . . . . . . . . . . . . . . . . . . . .ICOM

Generator . . . . . . . . . . . . . . .Northern Lights

HVAC . . . . . . . . . . . . . . . . . . . . . . .Cruise Air