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?
All days, between 00:00h and 23:59h - On demand only
From 01-04 until 20-04:
Meeting with harbor master marina Willemsoord on number 06-54928547.
Weekends and holidays, between 08:00h and 11:00h
Weekends and holidays, between 15:00h and 20:00h
Working days, between 08:00h and 20:00h - On demand only
From 21-04 until 26-04:
Meeting with harbor master marina Willemsoord on number 06-54928547.
Holidays, monday, Tuesday, Wednesday, Thursday, Friday, between 08:00h and 20:00h - On demand only
Saturday, Sunday, between 08:00h and 11:00h
Saturday, Sunday, between 15:00h and 20:00h
From 27-04 until 04-05:
Meeting with harbor master marina Willemsoord on number 06-54928547.
Weekends and holidays, between 08:00h and 11:00h
Weekends and holidays, between 15:00h and 20:00h
Working days, between 08:00h and 20:00h - On demand only
From 05-05 until 31-05:
Meeting with harbor master marina Willemsoord on number 06-54928547.
Holidays, monday, Tuesday, Wednesday, Thursday, Friday, between 08:00h and 20:00h - On demand only
Saturday, Sunday, between 08:00h and 11:00h
Saturday, Sunday, between 15:00h and 20:00h
From 01-06 until 30-06
All days, between 08:00h and 11:00h
All days, between 15:00h and 20:00h
From 01-07 until 31-08
Weekdays and weekends, between 08:00h and 12:00h
Closed on public holidays
Weekdays and weekends, between 15:00h and 21:00h
Closed on public holidays
From 01-09 until 30-09:
Meeting with harbor master marina Willemsoord on number 06-54928547.
Saturday, Sunday, between 08:00h and 11:00h
Saturday, Sunday, between 15:00h and 20:00h
Working days, between 08:00h and 20:00h - On demand only
From 01-10 until 31-03:
Meeting with harbor master marina Willemsoord on number 06-54928547.
All days, between 00:00h and 23:59h - On demand only
Administrator visiting address
Het Nieuwe diep 33-3 Den Helder
Phone: 0223-618481
Data updated: 29 Oktober 2025, 16:04 uur, all data comes directly from Rijkswaterstaat systems.
