All about the Farmsum, sluis: 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 Farmsum 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 6.5 meter | Lock length 25 meter |
| Threshold depth (buiten) 3.6 meter | Threshold depth (binnen) 3.6 meter |
| VHF-Channel - | Phone number unknown |
From 01-04 until 20-04
Weekdays and Saturday: between 08:00 and 20:00From 21-04 until 26-04
Weekdays and Saturday: between 08:00 and 20:00From 27-04 until 04-05
Weekdays and Saturday: between 08:00 and 20:00From 05-05 until 07-06
Weekdays and Saturday and Holidays: between 08:00 and 20:00On 08-06
Weekdays and Saturday: between 08:00 and 20:00From 09-06 until 31-10
Weekdays and Saturday: between 08:00 and 20:00From 01-11 until 31-03
Doorvaren alleen toegestaan bij daglicht.Administrator visiting address
St. Jansstraat 4 Groningen
Phone number: 050-3164911
Data updated: 18 December 2025, 15:03 uur
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