Western Towboat recently completed-towing the MODO Kulluk

by Hans | October 19th, 2011

Western Towboat Company (Seattle, WA) dispatched five of its harbor tugs to assist the mobile offshore drilling unit Kulluk to its final berth in Seattle after a tow from Dutch Harbor, Alaska.

The tugs Westrac, Westrac II, West Point, Flyer and Hornet took over the tow in Seattle harbor from Western Towboat’s ocean tugs Ocean Titan and Ocean RangerThe Kulluk was destined for Seattle’s Vigor Shipyard (Ex-Todds) for refubishment and updating.  The Kulluk is a MODU designed for operation in arctic waters. The sides are ice strengthened and raked outward at a shallow angle to provide icebreaking capability. It is circular in plan, to withstand ice and other environmental loads coming from any direction.

The tow originated in Dutch Harbor where the Kulluk had been secured to the Offshore Systems Inc. (OSI) dock over the winter. The 300’ Nanuq and tug Ocean Titan towed the MODU the 1736 miles from Dutch Harbor to Seattle escorted by the tug Ocean Ranger.   The Nanuq is a Multi-Purpose Response Vessel of 7200 HP operated by Edison Chouest. Western Towboat Company built, owns and operates the oceangoing tugs Ocean Titan and Ocean Ranger. The Ocean Titan is a 120’ ASD tug of 5,000 HP and the Ocean Ranger   is a 117’  twin-screw tug  of 4,200 HP equipped with Nautican Nozzles.

The trip across the Gulf of Alaska to Seattle was uneventful, the tow averaging 3.87 knots.  Once the ocean tugs were relieved of the tow, the five Western Towboat harbor tugs assisted the Kulluk into its assigned berth at Vigor Shipyard. The single screw tugs Flyer (37’LOA/400 HP) & Hornet (42’ LOA/400HP) took the lead end of the MODU while three ASD tugs—Westrac & Westrac II (79’ LOA/2400 HP) and West Point (60’ LOA/1200 HP) were stationed along the aft perimiter of the rig. This configuration was necessary due to the relatively narrow slip at the shipyard –25’ wider than the 265’ diamter of the Kulluk

The Kulluk is expected to remain at Vigor Shipyard over the winter and depart for Arctic Alaska in late spring.

Press Release Western Towboat Company

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