When winds are strong and waves and swell are high at sea, it is very difficult for even an experienced surveyor to read the vessel's draft mark accurately.
In addition, when various parties involved are present at the same time, their interests are intertwined, and there is a risk of error due to personal differences in the measurement of draft reading.
Furthermore, if there is a large difference in height between the berth and the water surface, the draft measurement will fluctuate due to parallax.
Therefore, the draft reading device has been developed to improve the above situations.
By using this device, the reading of the draft mark will be the same figure regardless of any working environment and anyone reading it.
Now, check out the video below to see how this draft reading device makes a difference.
The first video shows the center draft mark from the shore side without using the draft reading device. Try your reading skill.
The next video shows the same center draft mark as above with using the draft reading device from the deck.
How is it? Did you understand the difference in reading?
The biggest advantage of this draft reading device is that the center draft mark can be easily and accurately read regardless of any sea level condition and parallax.