Marine Construction and Marine Demolition

We have been involved in the dredging of marinas as well as river beds for cable laying.  We have experience in barge mounted excavation as well as rock placement and foreshore retainment.

We have performed jetty removals, including a 100 metre steel wharf at Recherche in Southern Tasmania, where we had to cut the steel piles underwater and remove everything from the site to conform with strict environmental guidelines due to the wilderness sensitivity of the area.

Our vessels are all signatories to the international oil pollution codes.  We have been responsible for towing and manoeuvring our 600t tanker barge full of oil and diesel whilst bunkering ships in port.  Our barges are also used to service aircraft carriers which anchor off when in the port of Hobart, discharging oily waste and effluent, and towing barges to and from the ship. 

Marine construction

Marine demolition

 

Marine construction

Marine demolition

 

Due to the zero tolerance for any form of vessel pollutants in the aquaculture industry, our crews over the past ten years, have developed strict codes of conduct to work to, with detailed attention to the containment of any debris during dredging, for instance, with our debris control equipment, which we developed for use around ships which are loaded with floating cargoes of logs and timber billets.

For many years we have been engaged by Sunderland Marine Insurance to carry out salvage and rescue of various vessels at risk in heavy weather situations.  We travelled 500 miles east to retrieve a stricken yacht and her crew.  We have also towed ships which have broken down in Bass Strait, to Melbourne and Newcastle.

Our company has driven and co-ordinated the driving of thousands of piles and removed old jetties to replace with new structures.  We have carried out these works in the Tamar River and south in the Derwent River and channel areas.  We have handled up to 50m pile for deep water marine constructions with our pile driving rig.  One of our crane barges, 500t slew crane barge, the “Robert Purnell” is on hire to assist with the extension of the oil tanker wharf in Geelong.  The “Robert Purnell” after a major maintenance programme and overhaul, including making sure that every aspect of the crane and its workings were safe, was made available for hire.

Due to the experience and profile of our company in Tasmania, we have been called to assess and carry out many high risk and lengthy projects.  Some of these jobs include high voltage cables laid underwater for the Hydro, as well as recovery of damaged underwater power cables for repair.  We have removed over four kilometres of large diameter steel pipe over rough and mountainous terrain.

We were employed by Telstra to remove underwater logs, debris and obstructions from the black water of a river in Tasmania, prior to the laying of their new fibre optic cables down the river bed.

We have carried out engineering works to transport and install siphon extension pipes for the Hydro’s rock wall dam structures.

Marine construction

 


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