lisbon, portugal - 8 february 2021: aerial view of vst tower for nautical traffic along tagus river at city harbour and port in

anchorage armour berth boats breakwater clipper coastal concrete cruise deck defence defences dock embankment engineering erosion floating frigate groyne harbor harbour jetty lisbon management marina motorboat nautical navigate nurse pier polder port portugal quay river rock rocks sail sailboat sea seaport seawall shipyard shore stones tagus tejo tower vessel voyage vst watercraft wharf yacht