Water transport is the infrastructure that includes ports, water vehicles and maintenance enterprises; its main purpose is the transportation of goods and people. Transportation is carried out with a engineering structure called a vessel. Vessels include floating industrial structures: ships, barges, floating cranes, landing stages, motor boats, floating platforms, docks, yachts, rafts, seaplanes, water bikes, etc. All types of vessels are on sale at the Port of Machinery trading site: fishing vessels, cargo vessels, technical vessels, specialized vessels (container ships, tankers, lighters, bulk carriers), passenger ships, sports vessels, etc.