30-09-2020
A dredged-out lock chamber
In 11 weeks’ time, 600,000 m3 of sand has been dredged out of the lock chamber by cutter suction dredger ‘Biesbosch’. The lock chamber is now at a depth of 19m below NAP. The bottom of the lock will be made of gravel and concrete which, when completed, will give the lock a maximum depth of 18 metres.