A 2¼ square film negative. The Type 12 frigate Yarmouth (1959) in No. 2 dry dock in Rosyth Dockyard. A close view of the Hull Outfit 20 Type 174 search sonar dome in the raised position in the hull between 16 and 19 stations. The photographer is under the keel looking up and aft. A photographic print from this negative is stamped 'Planning Department Design Division 8 May 1981 H M Dockyard, Rosyth'.