Origin of boats in far past was probably far from uniform; float passed into first boat, using word in widest sense; this step marks commencement of differentiation of water craft into lines along which true boats have evolved; forms of float employed by primitive man; ancient dug-outs; plank boats; ancient Scandinavian vessels; rudder; methods of reducing and increasing area of square sail; three-masted lugger.
The evolution of the sailing ship
Roy. Philosophical Soc., Glasgow -- Proc
1927
23 pages
1 Fig.
Aufsatz (Zeitschrift)
Englisch
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Online Contents | 1996
|SHIP SAILING MANAGEMENT METHOD AND SHIP SAILING MANAGEMENT SYSTEM
Europäisches Patentamt | 2019
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