1. Docks and Piers
2. Bridges
3. Offshore oil platforms
4. Floating production, storage and offloading (FPSO) units
5. Breakwaters and jetties
6. Ships and vessels
7. Marinas and yacht clubs
8. Aquaculture facilities
9. Lighthouses
10. Oil and gas pipelines and subsea infrastructure
11. Underwater tunnels
12. Seawalls and revetments
13. Navigation structures such as buoys and channel markers
14. Power generating structures such as tidal and wave energy converters
15. Research and exploration stations.
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