Well, some of these aren't strictly chanteys, hardly bawdy, but great songs of the sea and other traditions that go well with a female voice (at least the ones I have heard sung by ladies):

Mingulay Boat Song. Skye Boat Song Boozing (attributed to Maddy Pryor, sung by Roberts and Barrand) Any song about or from Nova Scotia (popular with expat Canadian ladies I know who I witnessed in Bahrain singing with some abandon on a bus after a marathon) Shoals of Herring Fields of Athenry (it's kinda a sea song ... its got a transportation theme) Pull Down Lads (Sung by June Tabor in the late 70s) Roll Alabama Roll (see the DT's bawdy version) Sam's Gone Away Aboard a Man of War Baltimore (your knowledge of anatomy may limit how many verses of this shanty you can sing ...)

Cheers, Ramadan Mubarak Brian