Oudezijds Kolksluis
Kolksluis, 1012 AP Amsterdam52.37580, 4.90060
One of Amsterdam's last medieval locks, linking the Oosterdok side of the IJ to the Oudezijds Voorburgwal under the Zeedijk. The gates normally stand open, but it is tight: a 4.7 m chamber under a fixed bridge with roughly 2.1 m of headroom, one for low boats only.
How it works
Stands open, a squeeze for low boats
Size
4.7 m wide, headroom about 2.1 m
How this lock runs
Normally stands open, no locking. Tight passage: 4.7 m wide under a fixed bridge with about 2.1 m headroom at normal water.
Operator's notice · translated from Dutch where we could
Always open (no operation).
Show the original (Dutch)
Always open (no operation).
Times checked 8 Oct
Official informationNearby on the water
We check every spot by hand, but the water changes. Have a quick look at local signs before you tie up. More in our Terms.