On Examination of the Detection Method of Leakage Oil from Sunken Ship and Quantity of the Remained Oil Using Ultrasonic Wave

摘要

On the seabed all over the world, the ships which sank during the war and marine disaster exist in great number. The cargo and fuel oil remain inside many wrecks. The wrecks become attenuated for long years. Then the oil is gradually discharged from the ship hull and rarely spouts resulting in a serious marine pollution. In order to examine the danger of the oil leakage from wrecks, the presence of remained oil inside the tank and its quantity are important to know. For the efficient countermeasure against oil leakage, it is necessary to confirm the presence of oil such as by the non-destructive inspection technique. This paper describes the possibility of applying the Echo-scope to the oil leakage monitoring and measurement method of the quantity of remained oil inside the tank using ultrasonic wave.