i'm wondering if anyone knows the tune to this song (lyrics found in the digitrad) about a woman who dresses as a boy to search for her love ("willie-o"), joins a navy ship, and learns that all the sailors on the ship are women.

One night as she worked on the rigging up high
Her breast fell into the pale moonlight.
Her breast fell into the pale moonlight
And the sailors all smiled to see the sight.

i know joan baez recorded it, but that's all the info i have.