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site name Bruks-Siwertell
site name Bruks-Siwertell

Ship unloader - USA

Grey Siwertell Ship unloader for cement, USA

Improved cargo reach with special feature

The delivery of a Siwertell continuous screw-type ship unloader and a screw conveyor system to RMC Pacific Materials is part of a solution for discharging and conveying cement to a storage and distribution facility in the port of Redwood City.


The ship unloader is pedestal-mounted on a concrete deck. It is equipped with a reach extender for improved reach in the ship’s cargo hold. 

A clean-up unit is attached to the vertical conveyor at the end of the unloading procedure in order to increase the efficiency of the clean-up operation.

The jetty conveyors include a horizontal screw conveyor of 45m, for the transfer of unloaded cement to the shore based receiving system, and two vertical conveyors. The electrical system is installed according to US standards.

For more information, please contact us

Sales Manager, Northern Africa & Europe

Bertil Andersson

+46 705895920

  • Ship unloading
  • Cement

RMC Pacific Materials

Additional facts

Unloader model

ST 490-F, stationary

Unloading capacity


Maximum ship size

40,000 dwt

Total weight


Jetty conveyor

HNL 800, length 45m; VNL 600, 2 units

37.507134357437, -122.21231287129

Redwood City, USA