Marine projects
Our past marine construction projects
For over 50 years, Coastwide Civil has contributed to a large number of major marine and oceanic construction projects in New South Wales and across Australia. Using our wide range of industry leading engineering equipment, we have delivered projects valued at over $200 million for some of the country’s largest tier-1 clients.
Some of our most impressive past marine works projects have included:
Shell Cove boat harbour breakwater and groyne
This $22 million breakwater and groyne project was constructed for the Shell Cove Boat Harbour and will be a significant structure that is based on the design principle of an Icelandic Berm. The first of its kind to be constructed in the southern hemisphere, the breakwater comprises of rock in excess of 30 metric tonnes that are placed with high accuracy and interlocked to form a low-maintenance ocean structure.
The breakwater project commenced in 2016, and, when completed, will extend 467 metres out into the ocean, whilst the groyne (the southern wall of the entrance channel) will extend 282 metres. Concrete pathways will be formed on top allowing pedestrian access for the full length of the walls.
Shell Cove boat harbour
Since its inception more than 25 years ago, this $1.5 billion development is the largest coastal tourist/residential project that has ever been initiated by a local government authority in Australia. A joint venture between Shellharbour Council and Australand, the project is a major focus for economic development within the region.
Stage 1 construction began in January 2013 and was completed in March 2014. The total works included:
- The diversion of the existing outlet channel
- The installation of a cofferdam
- The management and treatment of acid sulphate soils
- Excavation of over 400,000 m3 of material for the harbour
- Sorting, trommeling, and crushing of 420,000 m3 of material
- Construction of platforms and rock walls
- Placement of temporary surcharge mounds to consolidate soft soils
Port Kembla new tug berth
Established in the 1890s to facilitate the export of coal in the Illawarra region, Port Kembla is one of three major ports in New South Wales. To assist in improving operational efficiency, Port Kembla’s Ports Authority contracted McConnell Dowell to design and build a new tug berth facility.
Coastwide Civil completed the reclamation of approximately 3000m² of land for the construction of an adjoining breakwater that was approximately 250m long. We also sourced, graded, and transported armour rock for this project and dredged a total of 28,000m³ of material from the harbour.
Port Botany foreshore and dredging works
In 2008, Sydney Ports Authority awarded the design and construction of the new Por Botany terminal to the Baulderstone Hornibrook—Jan De Nul consortium. This job encompassed 60 hectares of reclaimed land, including five new berths; the construction of community features such as new breakwaters, groynes, lookouts, and footpaths; and the dredging of 11 million cubic metres of sand.
The Baulderstone Hornibrook—Jan De Nul consortium approached Coastwide Civil to construct the breakwaters, groynes, and rock revetment structures for the project. Our knowledge and expertise in rock revetments, marine civil works, and the placement of large volumes of dredged material, made us the perfect contractor for this job.
Townsville marine precinct
Coastwide Civil was contracted by Laing O’Rourke to construct the rock breakwall and revetments in the 20-hectare Townsville marine facility. This precinct was designed to house Townsville’s commercial fishing fleet, as well as being used for a range of commercial, industrial, and recreational purposes.
Coastwide Civil installed approximately 2km of rock walls and was extensively involved with dredging on-site. The project required the utilisation of our GPS-fitted long-reach excavators in order to construct rockwork to the high specification required.
Lake Illawarra
Lake Illawarra is the second largest lake in NSW, with a number of complex and distinctive ecosystems. Understandably, this was an environmentally sensitive project, which required not only extensive knowledge and understanding of the extent of the project works, but also a sympathetic approach that took into account all environmental constraints.
Coastwide Civil’s works for Lake Illawarra included dredging, sandstone foreshore work, the construction of sand dunes and dune vegetation, the quarrying of 190,000 tonnes of rock, seawall construction, and closing off the existing lake.
Upon successful completion of the project, Coastwide Civil won the Civil Contractors Regional and National Award for Environmental and Engineering Excellence, which brought the company into the limelight.
Lihir Island – Papua New Guinea
Coastwide Civil was contracted by Lihir Gold Limited to carry out works on the Lihir Island project on Niolam Island, Papua New Guinea (approximately 900 kilometres northeast of Port Moresby). We completed a refurbishment of the existing breakwalls and the construction of new breakwalls to protect a recently installed power plant and sea water intake tanks.
Barangaroo foreshore and dredging works
In 2003, the government of New South Wales determined that the Barangaroo marine precinct would be redeveloped from shipping and stevedoring facilities to provide more commercial office space and recreational areas. The redevelopment project comprises three precincts: Barangaroo South, Barangaroo Central, and Headland Park.
Coastwide Civil was employed by the main contractor to complete work on the foreshore and headland park area. This work included the use of two long-reach excavators, and involved:
- The bulk excavation of the harbour foreshore
- Dredging
- Placing scour rock for the harbour floor
- Placing architectural sandstone blocks
- Prepping beds for boardwalk construction
- Placing all sediment and environmental controls
Warilla rock sea wall
Coastwide Civil was engaged by Shellharbour City Council to construct the rock revetment to the northern and southern sections of Warilla Beach (approximately 800 meters). Coastwide Civil was selected for our extensive experience and on due to the experience of our past large-scale marine contracting work across Australia’s eastern coast.
Devonport Tasmanian Ports extension
Coastwide Civil was engaged by Hazell-Brady JV Maine to conduct works on the Tasmanian Ports extension in Devonport. With a Hitachi EX1200 long-reach excavator, Coastwide Civil conducted underwater ripping and hammering tasks to remove rock material for the safe extension of the harbour.
Contact us to learn more
If you’d like to find out more about our past marine project works or how our range of civil construction, marine, and engineering services can assist you, talk to our team today and we’ll be sure to get back to you as soon as we can.