A.L. Lloyd's "Levithan, Ballads & Songs of the Whaling Trade" by far the best on the subject. All the songs are traditional & come from the whaling industry. Aside from Lloyd there's Dave Swarbrick, Alf Edwards, Martin Carthy, Trevor Lucas & Martyn Wyndham-Reade. This was put out on Topic in 1967, & I don't know if it's on CD.

Good luck
Barry