Divers to Inspect 100-Year-Old Royal UK Navy Submarine

Divers have been given special permission to inspect a 100-year-old Royal UK Navy submarine so people can learn more about shipwrecks and – the pioneers of the Silent Service.

 

Over the next six months, frogmen will inspect the hull of HMS A7 – one of the very first boats built for the fledgling Submarine Service at the beginning of the 20th Century.

The small craft sank in Whitsand Bay in Cornwall in January 1914 while practising mock torpedo attacks on a Royal Navy vessel. All 11 men aboard her died.

A century later international maritime charity Promare is leading an educational and environmental study of the sunken submarine to teach people about the early days of underwater warfare, learn more about how shipwrecks degrade over time – and possibly to find out why A7 sank.

The wreck lies with her stern embedded in clay on the seabed about 135ft down. The boat was found in the early 1980s and is a designated war grave – no-one can dive on her without permission from the MOD.

The divers will not enter the wreck, but they will photograph and record every aspect of it, measure the thickness of the hull plates and carry out a full survey of the site.

What they find will help experts from the University of Birmingham create a virtual reality HMS A7 and her wreck site.

The unique 3D model of the boat will be used in a series of public talks and displays in museums to tell the story of A7, early submariners and how they helped pave the way for operations in the Great War.

“The story of HMS A7 is not well known, so the project aims to raise awareness – locally and nationally – about her life, her loss and contribution to World War 1,” said Promare’s Peter Holt.

“The reason why the A7 sank has never been confirmed, so the project will also investigate the possible cause of loss.”

HMS A7 was one of 13 A-class boats built in the first decade of the 20th Century, three of which were lost during training.

Press Release, June 12, 2014; Image: UK Navy

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