All about the Helsluis: 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.
Open the Water Map for Dordrecht in full window
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 7.2 meter | Lock length 39 meter |
| Threshold depth (buiten) 1.65 meter | Threshold depth (binnen) 1.65 meter |
| VHF-Channel - | Phone number 088-7972872 |
From 01-01 until 31-03
4 hours in advance sign in to the Biesboschluis at number 088-7972931. Attention: 15 minutes before closing time of the lock the last operation begins, after the indicated end time there will be no more operations.From 01-04 until 26-04
Attention: 15 minutes before closing time of the lock the last operation begins, after the indicated end time there will be no more operations.From 27-04 until 04-05
Attention: 15 minutes before closing time of the lock the last operation begins, after the indicated end time there will be no more operations.From 05-05 until 30-06
Attention: 15 minutes before closing time of the lock the last operation begins, after the indicated end time there will be no more operations.From 01-07 until 31-08
Attention: 15 minutes before closing time of the lock the last operation begins, after the indicated end time there will be no more operations.From 01-09 until 31-10
Attention: 15 minutes before closing time of the lock the last operation begins, after the indicated end time there will be no more operations.From 01-11 until 25-12
4 hours in advance sign in to the Biesboschluis at number 088-7972931. Attention: 15 minutes before closing time of the lock the last operation begins, after the indicated end time there will be no more operations.From 26-12 until 30-12
4 hours in advance sign in to the Biesboschluis at number 088-7972931. Attention: 15 minutes before closing time of the lock the last operation begins, after the indicated end time there will be no more operations.On 31-12
All days: between 10:00 and 19:00Administrator visiting address
Steegoversloot 36 Dordrecht
Phone number: 088-7970770
Data updated: 06 Mei 2026, 13:32 uur
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