Crest of the Royal National Institution of Naval Architects - Click to return to the homepage

RINA NEW BANNER

Sea Spark April to July 2021

International Registries June 2021

Siemens June 2021

MIM June 2021

Cadmatic June 2021

Autoship

Passing the acid test

Ship & Boat International: eNews June 2019

damenWEB

 

Damen reports that it has delivered a custom suction dredger (CSD), Brolga 1, to Energy Resources of Australia (ERA). The vessel, described as the CSD500-S, is based on Damen Dredging Equipment’s 38.5m x 7.95m CSD500 class, albeit customised for operations in acidic waters with a pH rating of 3. These are conditions the ship will certainly encounter when operating around the Ranger Uranium Mine in Jabiru, in Australia’s Northern Territory.

 

As a result, the dredger’s steel hull and other steel parts have been treated in a special coating, while its discharge pipe line has been fashioned from high-density polyethylene (HDPE). Damen adds: “The dredge valve in the discharge piping has been made in stainless steel and the box coolers are fabricated in 100% titanium.” The CSD500-S is designed to dredge down to depths of 14m, features a dredging capacity of 4,000m3 per hour and is typically equipped with just under 1,300kW of engine power.  

 

Brolga 1 will be complemented by a workboat, Ginga, which has been built to the specs of Damen’s 12.8m x 5.3m Multi Cat 1205 model. Like her mothership, she will be customised with similar considerations for her acidic operational zone. Damen adds that Ginga’s equipment will include “an A-frame, a heavy hydraulic deck crane and a special support frame for the cutter head of the CSD500”.