seascout

/ˈsiˌskaʊt/
noun
  1. A member of a branch of the Boy Scouts or Girl Scouts that focuses on boating and water activities.
    • He earned a merit badge for knot-tying during his time as a seascout.
    • As a seascout, she learned how to sail and navigate a boat.
    • The seascout troop spent the weekend practicing rescue drills on the lake.