Schedule: From the 19th till 21 June 2019 work will be carried out on the lock between 9 p.m. and 7 a.m. If this work is delayed, we will use the rfollowing nights of 24 and 25 June. Shipping obstructions lock on request To minimize nuisance to shipping, WaakSaam carries out the repair work in the evening and at night between 9 pm and 7 am. If required, the lock can be used on request. This must be requested at least 1.5 hours before arrival via VHF 22 or +31 223 61 32 92 More here