A good starting place would be the Seattle Folklore Society. Lots of resources and contacts HERE. For someone interested in sea chanteys and sea lore, the Center for Wooden Boats might be a good place to check (clicky). A lot of chantey-singing goes on there during the Northwest Folklife Festivals and the Wooden Boat Festivals.

I think there are people in both these organizations that could give good advice and point directions.

Don Firth