The concept of floating structures is not new. Structures such as pontoon bridges, ferries and oil platforms are some example of classical floating structures. However it is only recently the concept of floating structures becomes significant in civil engineering.
The floating structures inherently buoyant and stable structures. It is designed to allow waves to pass through for attenuation and support on several wave crests, rather than a solid structure designed to withstand severe wave impacts.
Yumemai Ohashi Bridge which is located at Osaka City, Japan is one example of civil engineering floating structure. The bridge is a swing arch bridge spanning 410m and 31.2 m width. This bridge was constructed between Yumeshima and Maishima, newly reclaimed land in the port of Osaka, and is the world's first floating swing arch bridge. This new bridge is regarded as a high-tech bridge fitting the 21st century. The design and construction of the bridge has investigated and conquered many engineering issue.
Another example of a floating structure is the Newfoundland Deltaport. It is an air base that is inherently unique triangular tetrahedral space frame design. Its delta shape encloses a harbor shielded from severe ocean conditions. It can be moved from one location to another or single-point moored with its harbor entrance always maintained in the lee of strong winds by dynamic positioning with on board maneuvering thrusters.