Seeking words or phrases used in common speech, which have their origins in nautical tradition. (Or were appropriated from normal use for nautical applications.)
make headway
allow leeway
bunting
freeze the balls off a brass monkey
show/learn the ropes
the bitter end
There’s a gadzillion more, but my mind’s a blank today.
fathom
plumb the depths
Armed to the teeth
Show your true colors
bamboozle
In the doldrums
take the helm
Three sheets to the wind
carry on
Down the hatch
From stem to stern
Room to swing a cat(of nine tails)
hit the deck
fathom
plumb the depths
Armed to the teeth
Show your true colors
bamboozle
crew cut
skyscraper
In the doldrums
scuttlebutt
bail out
take the helm
mayday (m