Admiralty tug

Admiralty tug is a deep sea tugboat, steam powered, used by Britain's Royal Navy to berth and tow offshore naval vessels. Hundreds of deep sea pattern tugs were built prior to and during the First World War to assist the Royal Navy, (then the largest navy in the world) with its fleet.

Many of the tugs served into the Second World War and then saw an extended life after being sold off by the navy into private service.

The ship is characteristic with a high prow, wooden bridge house, and steel arches over the aft deck to raise the tow cable.

See

• Foundation Franklin
• ST Sea Alarm
• The Key (film)