MLS of lighthouses, one on shore of river, the other on flank of wooded slope. Shots of mountainous shores of Saint Lawrence River, sharp cliffs. BOATING SHOTs of Ivy Lea Bridge, piers, of castle on one of the Thousand Islands, of shores, summer places, of luxury cruiser speeding along, of hydro towers on shore, of channel markers. BOATING SHOT of large lake freighter "Seaway Queen" in dry dock. Shot of lock control house, TILT DOWN to HAS of ship way down in the lock. Shot of poster in Welland Canal region re "Green Gable Tourist Court". MLS of flour mill along canal. LS of Cleveland waterfront and skyline. AERIAL SHOTs of Saint Lawrence River and seaway, of Montreal, of Saint-Lambert Lock, of Jacques Cartier Bridge. MS PAN over harbour. Shots of crane, gantry, seaway. Various shots taken along seaway, of shores, bridges, dredges, Welland Canal.