Enigma encryption machine used by Nazi Germany in World War II found on bottom of Baltic Sea.

Extract from ABC News

Posted Yesterday at 12:13pm, updated Yesterday at 1:11pm

The rare Enigma cipher machine used by the Nazi military was found in Gelting Bay near Flensburg, Germany.(Reuters: Christian Howe)

German divers searching the Baltic Sea for discarded fishing nets have stumbled upon a rare Enigma cipher machine used by the Nazi military during World War II which they believe was thrown overboard from a scuttled submarine.

Key points:

• The device consisted of a keyboard and wheels which scrambled messages
• It was used to send and receive secret messages during World War II
• It's believed to have been destroyed before Germany's surrender in May 1945

They thought they had discovered a typewriter entangled in a net on the seabed of Gelting Bay, but underwater archaeologist Florian Huber quickly realised the historical significance of the find.

"I've made many exciting and strange discoveries in the past 20 years. But I never dreamt that we would one day find one of the legendary Enigma machines," Dr Huber said.

The Nazi military used the machines to send and receive secret messages during World War II but British cryptographers cracked the code, helping the Allies gain an advantage in the naval struggle to control the Atlantic.

Underwater archaeologists Christian Howe (left), Florian Huber (middle) and Uli Kunz pose with their discovery.(Reuters: Christian Howe)

At Bletchley Park codebreaking centre, a British team led by Alan Turing is credited with unravelling the code, shortening the war and saving many thousands of lives.

Shortly before Germany's surrender in May 1945, the crews of about 50 submarines, or U-Boats, followed an order to scuttle their ships in Gelting Bay, near the Danish border, to avoid handing them to the Allies.

Destroying encryption devices was part of the order.

"We suspect our Enigma went overboard in the course of this event," said Dr Huber, of the company Submaris which leads underwater research missions.

Overall, Germans sank more than 200 of their submarines in the North and Baltic Seas at the end of the war.

The Enigma device, which looked like a typewriter, consisted of a keyboard and wheels which scrambled messages.

Although several hundred thousand machines were produced, only a few hundred are known to exist.

They sell at auction for tens of thousands of euros.

The find, made by divers working on behalf of WWF aiming to find abandoned fishing nets that endanger marine life, will be given to the archaeology museum in Schleswig.

Germans sank more than 200 of their submarines, as well as their equipment, in the North and Baltic Seas at the end of the war.(Reuters: Christian Howe)

Reuters