Peripherals：

Trimble GPS and Teledyne TSS DMS05 MRU (mounting bracket arranged on the side of the ship amidships, GNSS antenna and transducer coaxially mounted on the bracket, attitude meter mounted on the bracket to the side of the ship with negligible lateral offset distance)

On-site Photos：

There are a large number of wind power facilities built on islands near the survey area.

With few people and good weather to work in December due to the epidemic disruption and sea state, it was a good idea to take advantage of the week-long window before Christmas to grab some time for sea trials. Photos of the on-site installation are shown below:

                     Photos of the tranducer (without fairing)

                         Transducer Photo taken from test pool

                             Installed the tranducer on the pole

Ships out of the harbour area have both wind cable lines from surrounding islands to measure:

 Buried and Exposed Submarine Cables

Buried and Exposed Submarine Cables

Bottom tracking is stress-free, even on the bottom of the sea, where the terrain is highly undulating.

Construction pile holes suspected of penetrating the formation, with clear, continuous stratigraphic production visible

There are more fibre optic cable routes and various types of pipelines and submarine cables in the vicinity of Changbaihyang Island:

The data performance of the 3 fibre optic cables side by side target is as follows:

Buried Fiber Optical Cables

Buried Fiber Optical Cables

Buried Fiber Optical Cables

Travelling south-west, there are more water and oil pipes buried near Kintang Island:

Various Buried Pipelines

Various Buried Pipelines

At the same time, a collection operation was carried out for the nearby stratigraphy, which has a hard surface substrate and presents a 2D profile as shown below:

During the return flight, a rapid transverse sector scan of the stratigraphy and the target was carried out at the same time, and the data can be used for 3D mapping and imaging at a later stage, while the real-time 3D map team is still working on the improvement.