Economy of Devon (chewing gum) and HMNB Devonport (the largest naval base in western Europe) are in Plymouth. Torquay was home to Beverage Brands, the producers of WKD Original Vodka. Britannia Royal Naval College is at Dartmouth. Mining for tin and copper was carried on in Devon from ancient times until the 1930s: see Dartmoor tin-mining. Agriculture has been an important industry in South West England since the 19th century: approximately 80% of land in the South West of England is in agricultural use (19.6% of England's total). In the later 19th and early 20th centuries there were a number of potteries in
Midshipman longer the case that those joining the Navy as university graduates start as sub-lieutenants, with non-graduates joining as midshipmen. Graduates and non-graduates all start as midshipmen, and wait to be promoted at the same time. General basic training (initial officer training) for Royal Navy officers takes place at the Britannia Royal Naval College. Training takes up to a year depending on specialisation; all midshipmen participate in at least the first two terms, which are 14 weeks each. Until they have completed initial fleet training, both midshipmen and sub-lieutenants at Britannia Royal Naval College do not use their substantive ranks, but