Various scales. An ozatrace copy of a plan showing the lubrication arrangements of the sonar directing gear on the sonar trials ship Matapan (1945). Matapan was originally a Battle class destroyer that was converted into a sonar trials ship in 1971. This drawing is noted as Sheet 3 of 3 and was drawn by D. C. Dowst [Draughtsman at Portsmouth Dockyard flourishing 1971].