dredging the ground on the seabed

The project to install piles to build wind power plants on the high seas has begun. Starting from dredging the ground on the seabed so that it allows the pile can be plugged in. Dredging the 30-meter-deep soil is done to ensure the strength of the piles that will stick in the subgrade. Maybe today the installation of 5m and 6m diameter steel pipe poles has been widely used in wind turbine power plants at sea. but this time piles will be used with larger diameters to guard against the possibility of collapsing by the waves from the Indian ocean waves. This analysis appears to anticipate events before the harbor that has collapsed due to heavy loads and large hurricanes.
In fact, on a pier with a large load such as 5 tons / m3, with a pole distance of about 6 meter x 5 meter, and depth of -14m and deck height + 4m, required a steel pipe diameter of 900mm x 16mm thick, that alone can collapse because of the strength of a very powerful typhoon . So for a depth of 50m with a soft layer of 20m, then roughly the diameter of the pipe will be 10 meters with a thickness of around 180mm. To set it up, a giant Piling Barge is needed very large and with a 150m stake, equipped with an XTR type Hammer, such as the creation of a giant bridge connecting Panaitan Island and Xerxes Island.
This activity uses experts from the land of windmills, the Netherlands, which has been known for advancing underwater construction technology since colonial times.
With the supervision of very strict experts, it is hoped that the construction of wind power plant construction on the high seas will succeed and become an environmentally friendly alternative energy source.
Thank you @xpilar
Warm regard from Indonesia