In the light of the relation between the intensity of pressure of a liquid and the atmosphere,suggests that the draught of a ship can be measured simply by using a small transparent pipe with the result that the error caused by heavy seas with large bulk cargo ship draught measurement can br minimized.

To confirm draught on the stormy waves, a specific communicating vessel is designed, by which central surface of waves can be displayed.

Wrong draught of surveying ship is one of the erroneous reasons.

Influence of draft change of floating bridge with vehicles on tension of anchor-cable and critical velocity of flow;