The structure, delivered to Dutch company Heerema Marine Contractors, weighs 103 metric tonnes in air and provides 150t of uplift in seawater, the equivalent of eight large public buses.
Made from a modular design, the buoyancy system called IsoBlox can be assembled in an almost infinite number of 3D configurations to meet the most challenging requirements.
The structure forms part of a modular installation buoyancy package and will be used to deploy HMC's subsea production equipment used on a major LNG project off the coast of WA.
The modular installation buoyancy package will be used in conjunction with HMC's installation vessel Aegir.
Together, they will ensure the safe installation of the flow line end termination and in line tee (ILT) structures onto the seabed, 250m below water.
The largest buoy in the package will be used to install the 150t, 18 inch ILT and associated pipework.
The 150t buoy is made up of 72 standard elements held in place with a through member. The structure is 12.3m high and 6.44m long.
A standard, modular design allows the structure to be reassembled into different configurations as client requirements change.
Manufacturing efficiency is maximised as customised configurations can easily be assembled from a single standard building block element.
Standard, modular designs also allow for damaged elements to be removed rather than replacing the entire module.
Matrix said that together, these features make the company's installation buoyancy a more cost effective and flexible solution compared to customised buoyancy.
Matrix's CEO Aaron Begley said there was "nothing like" its buoyancy in the market today.
"The standard element design means clients can take advantage of significant cost savings over customised designs," he said.
"The modularity of the design means that in most cases, only one set of modules needs to be purchased in order to satisfy an entire set of requirements.
"This represents a significant cost savings for clients as well as eliminating the time factor involved with manufacturing new buoyancy as client requirements change."
