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Digger (Invercargill RSA), Issue 32, 22 October 1920, Page 11

The first submarine to be built in England was launched by Vickera as long ago as 1886. It was 100 feet long and 12 feet "round the wa'st." Thirty years later the famous "K" submarines were being built 0x1 the same spoi with a length of 340 feet, and driven fef eaaiues wi$V horse-power of 10,500.,