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In a triere the oars , though worked from different levels , were ( by an ingenious arrangement of the rowers ) nearly all of the same length . With four or five banks , however , the oars of the uppermost banks must have been longer ...
Forty banks of oars , one above the other , is ridiculous . Such a ship would be as high as it was long , and the oars of the upper banks would be quite unmanageable . But forty men on one oar would be quite as impractical .
Actually , in the Middle Ages , ten men were found to be the most that could efficiently be put on one oar . ... Hence Demetrios Poliorketes ' elevener , for instance , may have had oars in two banks , with six men on each upper oar and ...
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LibraryThing ReviewCrítica de los usuarios - PDCRead - LibraryThing
This was originally written in 1962, and is therefore is a little dated. Sprague de Camp has written a book all about the different civilisations and the technologies that that invented or acquired ... Leer comentario completo
LibraryThing ReviewCrítica de los usuarios - Schmerguls - LibraryThing
5609. The Ancient Engineers, by L. Sprague De Camp (read 21 Jan 2019) This book was first published in 1963 and hence its bibliography includes nothing after that date. It undertakes to tell of the ... Leer comentario completo
One The Coming of the Engineers
Three The Mesopotamian Engineers
Four The Greek Engineers
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