Reply To: Screw propeller hoisting on an auxiliary steamer 1854.

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#24964
Stephen B. G
Participant

    FYI, I know that this does not answer your query, but it’s related to the topic. The U.S. Coast Guard Barque Eagle, former Horst Wessel of the Kriegsmarine built in 1936, employs a clutch of sorts that disengages the propeller so it freewheels when the vessel is under sail. I am not sure when this mechanical feature was introduced to sailing vessels with auxiliary engines, but it solves the same problem of the drag produced by the propeller when not in use.