Tuesday, December 29, 2015

Tidewater Takes Delivery of Vigor-Built Tug

By Mark Edward Nero

Vancouver, Washington-based Tidewater Transportation & Terminals took delivery of the second of a series of three towboats, the Granite Point, on Dec. 22.

The vessel, built by Vigor Industrial’s Portland, Oregon shipyard, follows towboat Crown Point, which began operations along the Columbia Snake River this past May. Like the Crown Point, the Granite Point is a custom-built vessel specifically designed by Maine-based naval architects and marine engineers CT Marine.

Measuring 102 feet by 38 feet, with a depth at full load of 11 feet, the Granite Point has a hexagonal wheelhouse with floor-to-ceiling windows on all six sides.

“We are proud to have worked with Tidewater on Granite Point,” Vigor Executive VP of Fabrication Corey Yraguen said. “Like its sister ship Crown Point, this vessel sets new standards for future towboat design.”

The Granite Point, named for a granite cliff in Washington about 20 miles southwest of Pullman along the Snake River, was built to the same specifications as the Crown Point and forthcoming sister vessel, the Ryan Point.

The Granite Point is powered by two Caterpillar 3516C EPA Tier 3 certified diesel engines each producing 2,240 BHP at 1,600 RPM. The engines drive two 92-inch” by 100-inch fixed pitch, stainless steel propellers through CT28 Kort Nozzles. The vessel’s capable of a service speed of eight knots.

Electrical power is provided by two C7.1, Tier 3 generators, rated at 480 V, 200 kW at 1,800 RPM. The generators are controlled through an automatic transfer system that ensures the vessel can recover from a generator power loss in less than 30 seconds.

Deck machinery includes seven Patterson WWP 65E-7.5, 65-ton electric deck winches, with pilothouse remote operation and local push button control stations on the main deck. Each winch has Samson 1 3/8” Turbo 75 Synthetic Line.

“The up-front work paid off,” Tidewater CEO Bob Curcio said. “The vessels are fuel-efficient, ecologically-responsible, and are giving our captains and crews exactly what they’d asked for.”