Lusitania and her sister-ship Mauretania were originally fitted with three-bladed propellers. In 1908 Mauretania had a new set of four-bladed propellers fitted, which immediately improved her speed.
in the towing-tank investigations made in connection with the design for the "Lusitania;' and "Mauretania." it was found that in large vessels there was a decided advantage to be gained from a ...
Lusitania and her sister-ship Mauretania were originally fitted with three-bladed propellers. In 1908 Mauretania had a new set of four-bladed propellers fitted, which immediately improved her speed.
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