Note générale :
Depths shown by soundings.
Head of title: North America - west coast. Vancouver Island & British Columbia.
"The graduation of this chart depends upon positions obtained from the Geodetic Survey of Canada (1930)."
"Beaver Cove from the Canadian government plan of 1926."
Large corrections 17th February 1933.
Includes manuscript additions: locations of signals highlighted.
Bottom right corner: Engraved 1904.
Bottom left corner: Small corrections [to] 1936.
Top right corner: 120.33 [printed in 1933].
Note sur la mention de responsabilité :
"The portion in hair-line from a preliminary survey by D. Pender, Master R.N., 1863-5."
Données mathématiques sur les documents :
Scale 1:38 018.
Note sur les dates de création :
Published on 30th July 1904, under the superintendence of Rear Admiral Sir W.J.L. Wharton, with corrections to 1936.