Built in 2009, by Bender Shipbuilding of Mobile, Alabama (hull #7800) as the ATB OSG Vision for Overseas Shipholding Group America of New York, New York.
She was the first of a series of COSTWISE class ATBs designed by Ocean Tug and Barge of Milford, Massachusetts for Overseas Shipholding Group America.
Fitted with an INTERcon coupler system, equipped with 64(in) diameter pins. the tug is powered by two Wartsila 9L32 main engines, designed to burn IFO380 fuel, as well as conventional marine diesel (depending on operating circumstances). For a rated at 6,050 horsepower taken at 750 RPM turning two LIPS controllable pitch propellers mounted in high efficiency kort nozzles with triple shudder rudders.
The tug features independently steerable rudders and independent steering systems for safety, and the total tug/barge unit meets IMO 75 I requirements for maneuverability. She is rated at 12,000 horsepower.
Her electrical service is provided by three 250kW Cummins generating turning at 1,800 RPM and one additional 250 kW Cummins emergency generator.
The tug's capacities are 214,000 gallons of Marine Heavy Fuel Oil, 60,500 gallons of conventional diesel fuel, and 33,000 gallons of water.
The tug represents a wholesale change in the design philosophy for Articulated Tugs and Barges. Each will incorporate features not found on conventional tugs, and for their their size, they will be among the most spacious and ergonomically-designed tugs afloat.
She is married to a specially designed 342,000 bbl double hulled crude oil lightening barge, the OSG 350 . Also designed by Ocean Tug and Barge Engineering, that was constructed simultaneously at Bender Shipbuilding.
(Ocean Tug and Barge Engineering)