All about the Zeedoksluis: 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 Den Helder 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 20.1 meter | Lock length 42 meter |
| Threshold depth (buiten) 8 meter | Threshold depth (binnen) 7.4 meter |
| VHF-Channel - | Phone number 06-54928547 |
From 01-04 until 05-04
Meeting with harbor master marina Willemsoord on number 06-54928547.From 06-04 until 23-05
Meeting with harbor master marina Willemsoord on number 06-54928547.On 24-05
Meeting with harbor master marina Willemsoord on number 06-54928547.From 25-05 until 31-05
Meeting with harbor master marina Willemsoord on number 06-54928547.From 01-06 until 30-06
All days: between 08:00 and 11:00From 01-07 until 31-08
All days: between 08:00 and 12:00From 01-09 until 30-09
Meeting with harbor master marina Willemsoord on number 06-54928547.From 01-10 until 31-03
Meeting with harbor master marina Willemsoord on number 06-54928547.Administrator visiting address
Het Nieuwe diep 33-3 Den Helder
Phone number: 0223-618481
Data updated: 17 Februari 2026, 13:52 uur
Klopt er iets niet? Meld het de Vaarmelder.
