Instructions for the use of the Douglas-Schäfer sounding traveller.

Instructions for the use of the Douglas-Schäfer sounding traveller, Hydrographic Department publication; also letter from Commander H.P. Douglas to the father of Lieutenant J S Schäfer, 1912 (Formerly NVA/1)

Object Details

ID: NVT/39
Type: Manuscript
Display location: Not on display
Date made: 1912-01-01 - ?; 1912
Credit: National Maritime Museum, Greenwich, London
Parts: Navigation: Theory (Manuscript)