On an even keel
"Sailing on an even keel". What are the origins of this saying?
From keel, a structure on a boat.
EVEN KEEL - "State of normality; when the ship's keel is perfectly horizontal and her fore and aft draught are the same. (The expression is misapplied because in fact a fore and aft draught which reads the same is the last thing any sailor wants. A ship which floats on a perfectly even keel can be almost impossible to steer. It is customary to trim slightly by the stern." from "Salty Dog Talk: The Nautical Origins of Everyday Expressions" by Bill Beavis and Richard G. McCloskey (Sheridan House, Dobbs Ferry, N.Y., 1995. First published in Great Britain, 1983). Page 31.I thought the last part was interesting. If everything is perfectly normal, it is hard to steer and thus hard to move forward. Hmmm.
As a former merchant marine officer I'd say that the last observation is not correct.