Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 143,908 pages of information and 230,121 images on early companies, their products and the people who designed and built them.
1927 The ASDIC Research and Development Unit was established at Portland (where it remained until 1940).
1940 The Anti-Submarine Experimental Establishment was established at Fairlie, where it remained until 1947.
1947 The Underwater Detection Establishment was established at Portland; it was responsible for research into underwater detection and communications.
1960 The unit was absorbed into the Admiralty Underwater Weapons Establishment.