lock, lock chamber

lock (water navigation)

lock

lock

canal lock, lock

canal lock, canal locks, dock gate, Double lock, drop lock, flight of locks, gate (water transport), Lock-chambers, Lock (canal), lock and dam, lock chamber, lock flight, Lock flights, lock gates, Lock navigation, lock paddle, Lock rise, locks (canal), mitre gate, navigation lock, pound lock, sea lock, shaft lock, ship lock, ship locks, shiplock, shipping lock, Sluse, Sluser, staircase lock, staircase locks, stop lock, Twin lock

canal lock, lock and dam, pound lock, lock (water navigation)