DOP Submersible dredge pumps

Excavator-mounted DOP Dredge Pump 350 creates marina


Location: Cadzand, the Netherlands

Period : Q4, 2015 – Q1, 2016

Product type : DOP Dredge Pump 350 with sand production head

Contractor : Martens & Van Oord

DOP350 ensures a continuous production process

The village of Cadzand is located in the South West of the Netherlands, on the shores of the North Sea. It’s old marina entrance needed to be updated and the harbour was to be deepened. Not a simple job taking into account that conventional WWII explosives (UXO’s – Unexploded Ordnance) were hidden in the seabed. The Dutch contractor Martens & Van Oord was up for the job – using a DOP submersible dredge pump in the process.

Plenty of jetwater is to be added for optimising the mining process.

The DOP Submersible Dredge Pump 350 was attached to one of their pontoon-based excavators. The DOP pumped the bottom material – sand and occasionally explosives (UXO’s) – to a reinforced screening installation. From there, another Damen pump was used to pump the screened sand further to replenish the nearby shores. The choice for using the DOP was a simple one: the submersed dredge pump ensures a continuous process (in UXO-areas) contrary to mechanical dredging.

For sand mining purposes, a somewhat customised sand mining head with plenty of jetwater was fitted. This DOP head was designed for mining a maximum concentration using pressurized water to fluidise the bottom material.

DOP semi submerged with floating discharge pipe line.