Ключевые слова: america, assistance, boat, canal, cargo, central, commercial, cruise, ecology, ecosystem, freight, harbor, harbour, industrial, industry, italy, marine, maritime, natural, nature, nautical, navigate, ocean, panama, port, power, powerful, pull, push, river, scenery, sea, seafaring, service, ship, shipping, tow, transport, transportation, tug, tugboat, vacation, venice, vessel, water, watercraft, wharf,