Consideration of value of general aids to navigation on Lake Superior as exemplified by voyage of 600-ft bulk freighter after passing through locks at Sault Ste. Marie; reconstruction of system of navigational light signals and marks in Duluth-Superior harbor on Lake Superior.
Navigational aids
Mar Rev
Marine Review ; 65 , n 2
1935
2 pages
Article (Journal)
English
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Engineering Index Backfile | 1951
Engineering Index Backfile | 1954
|Advances in marine navigational aids
Tema Archive | 1972
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