Vice-Admiral Cecil Vivian Usborne (17 May 1880 - 31 January 1951) was a high ranking officer in the British Royal Navy. He served as the Director of Naval Intelligence

Director of Naval Intelligence

The Director of Naval Intelligence refers to either one of two posts, both related to naval intelligence:* The head of the Naval Intelligence Division of the British Admiralty; or* The head of the Office of Naval Intelligence in the United States....

 and retired Vice-Admiral and later a Member of Parliament.

He was brought back into the Navy during the Second World War as Naval Adviser to the First Sea Lord

First Sea Lord

The First Sea Lord is the professional head of the Royal Navy and the whole Naval Service; it was formerly known as First Naval Lord. He also holds the title of Chief of Naval Staff, and is known by the abbreviations 1SL/CNS...

 to develop anti-U-boat weapons. As his assistant he employed Edward Terrell

Edward Terrell

Edward Terrell OBE was a Liberal politician, a successful barrister and magistrate with a flair for invention; by 1940 he had registered a number of patents relating to pens, ink bottles and peeling knives...

 who had developed Plastic Armour

Plastic Armour

Plastic armour was a type of vehicle armour originally developed for merchant ships by Edward Terrell of the British Admiralty in 1940...

.