Vessel entering the Haringvliet locks at Stellendam, The Netherlands

vessel haringvliet locks river mouth stellendam the netherlands sea lock haringvlietdam scheelhoek floodgate maaskant shipyards lock fishing ships shipping port seagulls flock harbour harbor nature reserve haringvliet locks sluice europe passage canal transportation transport industry channel birdseye view infrastructure european boat engineering design construction industrial waterway transit logistics outside navigation path estuary sluices drone flight aerial drone