Great Northern Docks in Maine specializes in the highest quality custom boat docks designed for the harsh conditions of the New England Waterfront. We have a complete line of turn-key boat docks and boat dock hardware for the do-it-yourself market. We also stock standard pre-built wood or aluminum dock sections for the weekend warrior who wants it all ready to install as a weekend project. At Great Northern Docks showrooms and on this website we also carry a large variety of boat dock supplies and accessories.