Aiviq

**Aiviq**
Ship data
flag	United States
Ship type	Anchor-handling tug , icebreaker
Callsign	WDG2524
home port	Galliano, Louisiana
Owner	Offshore Service Vessel LLC
Shipping company	Edison Chouest Offshore
Shipyard	North American Shipbuilding Inc., Larose
Build number	247
Launch	November 1, 2011
Commissioning	April 20, 2012
Whereabouts	in motion
Ship dimensions and crew
length	110 m ( Lüa ) 95.46 m ( Lpp )
width	24.39 m
measurement	12,892 GT / 3,867 NRZ
Machine system
machine	diesel-mechanical ; 4 × diesel engine ( Caterpillar C280-12)
Machine ; performance	16,240 kW (22,080 hp)
Top ; speed	15 kn (28 km / h)
propeller	2 × controllable pitch propellers in Kort nozzle
Furnishing
Bollard pull	209 tons
Ice class	A3
Others
Classifications	American Bureau of Shipping
Registration ; numbers	IMO no. : 9579016

The aiviq ( Inupiaq : Walrus ) is under the flag of the United States traveling anchor handling tug (AHT, Eng. Anchor Handling Tug ) and icebreakers . The primary object of aiviq is the anchor-laying of offshore platforms . The special ship can also be used to combat oil pollution at sea.

history

The ship was ordered in July 2009. It was built under hull number 247 by North American Shipbuilding Inc. The keel was laid on February 3, 2010, the launch on November 1, 2011. The delivery took place on April 20, 2012. The price is quoted at around 200 million US dollars.

The name of the ship was determined in a competition won by a twelve-year-old schoolgirl from northern Alaska.

incident

While the Aiviq was towing the “ Kulluk ” drilling platform to a shipyard in Seattle for overhaul, the main machinery failed on December 28, 2012 off the Trinity Islands , an archipelago southwest of Kodiak Island in Alaska . Although the engines could be started again and the Aiviq was supported by another tug, the towing connection subsequently broke, whereupon the "Kulluk" ran aground off Sitkalidak Island . Contaminated fuel was suspected to be the cause of the engine failure.

Technology and equipment

The Aiviq is certified according to ice class A3 and is able to break ice with a thickness of over one meter. There is a helicopter platform in the front area of the ship .

Machine system and drive

The Aiviq is powered by four 12-cylinder diesel engines of the type Caterpillar C-280, which develop an output of 4,060 kW each at a nominal speed of 1000 rpm. They act in pairs via gears on the two Schottel variable-pitch propellers running in Kort nozzles . This enables the ship to reach a maximum speed of 15 kn . The bollard pull is given as around 209 tons .

In addition to the two shaft generators , the Aiviq is equipped with four additional generators for power supply . The total electrical output of the system is 10.8 MW.

Web links

Anchor-handling tug and icebreaker Aiviq ( YouTube video)

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ABS Eagle Record. American Bureau Of Shipping, accessed March 29, 2018 .
^ Winner of Ice Breaker Naming Contest ( Memento from March 8, 2013 in the Internet Archive ), Shell USA, September 12, 2011.
↑ Kathrine Schmidt: Tug in 'multiple engine failure' in Alaska tow. Upstream, December 28, 2012, accessed January 3, 2013 .

[abs-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ABS Eagle Record. American Bureau Of Shipping, accessed March 29, 2018 .

[2] Winner of Ice Breaker Naming Contest ( Memento from March 8, 2013 in the Internet Archive ), Shell USA, September 12, 2011.

[3] Kathrine Schmidt: Tug in 'multiple engine failure' in Alaska tow. Upstream, December 28, 2012, accessed January 3, 2013 .