All about the Johan Frisosluis: 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 7 meter | Lock length - meter |
| Threshold depth (buiten) 3.55 meter | Threshold depth (binnen) 3 meter |
| VHF-Channel 18 | Phone number 0514-681480 |
From 28-03 until 31-05
Mon to Sun: 08:00-09:00:00: Professional sailing on call only. Calling from 058 - 29 25 888. Option 4 (accessible from 08:30 to 16:00) 2 hours in advance a call must be requested.From 01-06 until 31-08
Mon to Sun: 08:00-) 9:00: Professional sailing on call only. Calling from 058 - 29 25 888. Option 4 (accessible from 08:30 to 16:00) 2 hours in advance a call must be requested.From 01-09 until 31-10
Mon to Zo: 8-9 hours: Professional sailing on call only. Calling from 058 - 29 25 888. Option 4 (accessible from 08:30 to 16:00) 2 hours in advance a call must be requested.From 01-11 until 27-03
Ma to Sat: 8-9 hours: Professional sailing on call only. Sat 9-17: On call. Calling from 058 - 29 25 888. Option 4 (accessible from 08:30 to 16:00) 2 hours in advance a call must be requested.Administrator visiting address
Tweebaksmarkt 52 Leeuwarden
Phone number: 058-2925925
Data updated: 02 Maart 2026, 13:56 uur
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