Danger Island Australia - Installations These are pictures of pontoons at Danger Island Sydney Australia. All with Marine Dock Systems floats under them. Some recent, some built in 1980 and still going strong. There is a mix of timber framed pontoons decked with hardwood. Aluminium framed pontoons deck with hardwood timber. A lot of these photos also have our aluminium ramps / gangways on them. Some of these pontoons were built by someone else on our Marine Dock Systems floatation modules. Please veiw the photo's to see just what is possible with our universal pontoon system.