"Herring's Head" is a wonderful children's song from England's East Coast. Chanyeys such as "John Kanaka" lend themselves well for kids. One can use names of kids you're singing to in rhyming verses. A good source of family-friendly chanteys is the book and CD combination "Songs of the Sailor" from Mystic Seaport Museum. Don't know if it's still in print, though. Also, the maritime park I work for (San Francisco Maritime National Historical Park) produced a CD specifically for elementary school kids and teachers called "The Hyde Street Pier Chantey Singers: Chanteys and Sea Songs." PM me if you'd like more info, and how to order.

Chanteyranger