Collingwood and its Approaches 
- Media Type
- Item Type
Georgian Bay - Lake Huron
and its Approaches
Surveyed by Staff Commander J. G. Boulton, R. N.
Assisted by Messrs. J. W. Stewart and D. C. Campbell, 1888
under the orders of the Government of the Dominion of Canada.
Magnetic Variation in 1913, increasing about 3' annually.
All bearings are Magnetic.
Soundings in Fathoms
(reduced to the mean Summer level of the Bay.)
Corresponding to 14 ft. 6 in. above the Dock Sill.
Natural Scale 1/36,456
London. Published at the Admiralty, 24th May 1890, under the Superintendence of Captain W. J. L. Wharton R. N. F. R. S. Hydrographer.
Sold by J. D. Potter, Agent for the sale of Admiralty Charts, 145 Minories.
Engraved by Davies & Company
- Great Britain. Admiralty. Hydrographic Office
- Place of Publication
- London, Eng.
- Date of Original
- pub. 24 May 1890
- Language of Item
- Geographic Coverage
Maritime History of the Great Lakes