The Anglian Sovereign is a large sea-going tugboat

Tugboat

A tugboat is a boat that maneuvers vessels by pushing or towing them. Tugs move vessels that either should not move themselves, such as ships in a crowded harbor or a narrow canal,or those that cannot move by themselves, such as barges, disabled ships, or oil platforms. Tugboats are powerful for...

 based in Lerwick

Lerwick

Lerwick is the capital and main port of the Shetland Islands, Scotland, located more than 100 miles off the north coast of mainland Scotland on the east coast of the Shetland Mainland...

 on the Shetland Islands

Shetland Islands

Shetland is a subarctic archipelago of Scotland that lies north and east of mainland Great Britain. The islands lie some to the northeast of Orkney and southeast of the Faroe Islands and form part of the division between the Atlantic Ocean to the west and the North Sea to the east. The total...

 of the United Kingdom.

The vessel is powered by z-drives and was christened on 27 August 2003. Anglian Sovereign is owned by JP Knight which purchased the initial owner Klyne Tugs of Lowestoft

Lowestoft

Lowestoft is a town in the English county of Suffolk. The town is on the North Sea coast and is the most easterly point of the United Kingdom. It is north-east of London, north-east of Ipswich and south-east of Norwich...

 in 2007. The vessel is part of the remainder of the fleet of Emergency Towing Vessels

United Kingdom's emergency towing vessel fleet

The United Kingdom maintained a fleet of emergency towing vessels from 1993 through 2011.The vessels were privately owned and operated for Her Majesty's Coastguard...

 that operate on behalf of the UK's Maritime and Coastguard Agency

Maritime and Coastguard Agency

The Maritime and Coastguard Agency is a UK executive agency working to prevent the loss of lives at sea and is responsible for implementing British and International maritime law and safety policy.This involves coordinating search and rescue at sea through Her Majesty's Coastguard , ensuring that...

.

On 3 September 2005, Anglian Sovereign ran aground off Oxna

Oxna

Oxna is one of the Scalloway Islands, lying north west of Burra in Shetland, Scotland. Oxna has an area of 68 ha .The island has been uninhabited since World War I, but there is a house which is still used as a holiday home.....

 island in the Scalloway Islands

Scalloway Islands

The Scalloway Islands are in Shetland opposite Scalloway on south west of the Mainland . They form a mini-archipelago and include:* Burra ** West Burra...

 while conducting hydrographic surveys. No injuries occurred but the vessel lost ca. 84 tonnes of gas oil and was severely damaged. A 2006 official report found that the shipmaster's consumption of alcohol and several other negligences on board had been the cause of the incident.