Commander Alwyn Thomas Lavender Covey-Crump (19 February 1907 – 19 May 1991) was a British officer of the Royal Navy. An assistant to the Chief of Naval Information, he was responsible in the mid-1950s for compiling a record of Jack-speak (naval slang) and other historical marine linguistic details. The first edition appeared on 17 May 1955. The compilation, now continually updated, has led to the term Covey-Crump itself entering into Royal Navy slang. Covey-Crump served on various ships between 1927 and 1945, including HMS Vindictive, HMS Enterprise, HMS Duncan, HMS Faulkner, HMS Boscawen, HMS Ceylon and HMS Liverpool. He was the second son of Reverend Canon Walter William Covey-Crump, and was married with one son. Background Covey-Crump was born on 19 February 1907 in Stopsley, Bedfordshire. He was the second son of Reverend Canon Walter William Covey-Crump; his mother was Hilda Sophia (). His parents married on 11 June 1903 at Haddenham, when his father was by then using the name Covey as a given name. The family was using the double-barrelled name, Covey-Crump, by 1911. Covey-Crump had two brothers: musician Lewis Charles Leslie, and Leo William Rolf, who served in the Royal Naval Volunteer Reserve in World War II. He attended the King's School, Ely. In 1938, Covey-Crump married Joyce Blackstone at St James, Picadilly, London. the daughter of T. W. Blackstone, former Deputy Inspector General of Police and Police Commissioner in Southern India. The 1939 England and Wales Register finds him at Flat 5, Nirvana Mansions, Portsmouth. The 1957 Electoral Register finds Covey-Crump and his wife Joyce living at 19 Trenham Drive, Warlingham, Surrey. They had one son. He died aged 84 on 19 May 1991 at St Albans, and was buried on 24 May. Naval service Inter-war years On 1 September 1925, aged 18, Covey-Crump was appointed acting paymaster sub-lieutenant or paymaster midshipman. In December 1927 he passed his accountant officers' examination, class 2, while serving on HMS Vindictive. On 1 June 1929 he was promoted to paymaster lieutenant. In 1931 he was deployed to HMS Enterprise. From 14 September 1934 he was deployed to HMS Vernon, a shore establishment in Portsmouth. He was appointed to HMS Duncan from 10 September 1935. From 28 September 1936 he was deployed as secretary to Captain Victor Danckwerts of HMS Faulkner, leader of the 6th Destroyer Flotilla. From 1 June 1937 he was paymaster lieutenant-commander. On 16 August 1938 he