All about the Grote Merwedesluis: service times, location and contact details. On the water map below do you see this lock complex in its immediate vicinity. On the right on this page you will find the locking times, additional information and the telephone numbers and VHF channels.
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For seasoned water sports enthusiasts it is a simple procedure, but if you are not yet experienced on the water, entering and exiting the lock can be an impressive experience. How does it work, where do you moor, what should you pay attention to?
| Width 11.8 meter | Lock length 100 meter |
| Threshold depth (buiten) 3.2 meter | Threshold depth (binnen) 4 meter |
| VHF-Channel 18 | Phone number 0183-633308 / fax 0183-634415 |
From 01-01 until 31-03
Sunday and Holidays: closedFrom 01-04 until 26-04
Working days: between 06:00 and 22:00From 27-04 until 13-05
Working days and Holidays: between 06:00 and 22:00From 14-05 until 31-10
Working days: between 06:00 and 22:00From 01-11 until 23-12
Sunday and Holidays: closedOn 24-12
All days: between 06:00 and 18:00From 25-12 until 30-12
Sunday and Holidays: closedOn 31-12
All days: between 06:00 and 18:00Administrator visiting address
Zuid-Hollandplein 1 Den Haag
Phone number: 070-4416611
Data updated: 09 Februari 2026, 14:54 uur
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