Sundog Marina, founded in 1991 and located on the Clinton River in Harrison Township, MI, offers boating services including winter and summer storage, new and used boat sales, and boat maintenance.
Sundown Sport & Marine, located in Richland, WA, offers boat repair, maintenance services, and water sports equipment including wakeboards and accessories, serving the local boating community since 1977.
Sayville Ferry Service operates ferry connections between Long Island and Fire Island, serving communities including Cherry Grove, Fire Island Pines, Water Island, and Sailors Haven/Sunken Forest.
Sunmar Shipping operates a fleet of 20 vessels providing ship-to-ship transshipment of frozen fish and fish meal products in the North Pacific, serving major markets worldwide and supplying provisions to fishing fleets in the Russian Far East.
Sunrise Fish Dive Surf is a marina in Cape Canaveral offering boat storage, wet slips, a tackle and gift shop, bait station, and deep sea fishing charters.
Sunscot & Company Limited is a Hong Kong-based independent shipping organization specializing in ship broking, asset protection, and consultancy services for vessel owners, managers, and financial institutions.