Aiviq
209 tons
A3
IMO number:. 9579016
The Aiviq ( Inupiaq: walrus ) is a traveling under the flag of the United States, anchor handling tug (AHT, Anchor Handling Tug engl. ) And icebreakers. The primary task of Aiviq is the anchor laying of oil rigs. Furthermore, the special vessel can also be used for the oil spill at sea.
- 2.1 machinery and drive
History
The ship was ordered in July 2009. It was built under the hull number 247 of North American Shipbuilding Inc.. The keel-laying ceremony took place on November 1, 2011 3 February 2010, the launching. The delivery took place on 20 April 2012. The price is estimated at around 200 million U.S. dollars.
The name of the vessel was determined in a competition, won by a twelve year old student from northern Alaska.
Incident
While the Aiviq dragged the rig " Kulluk " for overhaul in a shipyard to Seattle, occurred on December 28, 2012 in front of the Trinity Islands, an archipelago southwest of Kodiak Island in Alaska, a failure of the main power plant. Although the engines could be restarted and the Aiviq was supported by another tug, broke as a consequence the towing connection, after which the " Kulluk " ran aground off Sitkalidak Iceland. The cause of the engine failure verunreingter fuel was suspected.
Technology and equipment
The Aiviq is certified according to ice class A3 and break able to ice with a thickness of about one meter. At the front of the ship there is a helicopter platform.
Machinery and drive
It is powered Aiviq of four 12-cylinder diesel engines of type Caterpillar C -280, which develop a power of 4,060 kW at a rated speed of 1000 rpm. They work in pairs via gearbox to the two ongoing in Kort nozzles Schottel propeller. Thus, the ship has a maximum speed of 15 knots. The bollard pull is specified with approximately 209 tons.
For the power supply, the Aiviq addition to the two shaft generators is equipped with four other generators. The total electrical output of the plant is 10.8 MW.