Approaches to Dartmouth sea coast chart. Devon. ADMIRALTY 1943 old vintage map
'Approaches to Dartmouth. Castle Hill. 50� 20' 14N. 3� 34' 10' W mag. 11� 40' W. (1943) decreasing about 10' annually. Soundings in feet (reduced approx. to 2 Fort. Title of map:'Approaches to Dartmouth. ).