The element technologies as the counter-measure against the discharged oil have been investigated. The oil recovery from sunken wrecks has been validated using the model tank by the method of high frequency induction heating. The experiment for recovering heavy fuel oil by displacing water from the tank filled with heavy fuel oil with high viscosity (3000cSt ∼4000cSt) has been carried out. The temperature distribution of heavy fuel oil inside the tank has been measured and the effect of fluidity on recovery rate of oil has also been investigated. The experimental parametersof oil recovery are the height of head tank filled with water, length and diameter of horizontal pipe leading to the exit of oil. The oil recovery rate has been measured in various cases. The pre-heating time before recovering oil was changed. The oil recovery rate increases due to the effect of heating. The effect of heating on the oil recovery rate has been compared in case of mat type of heating and pipe type of heating. The relation between provided electric power for the latter heating becomes proportional to the oil recovery rate. The relation between the pipe friction coefficient and Reynolds number in the experiment has been estimated by the assumption of laminar flow. The oil recovery rate has been estimated using characteristic value for pipe length, pipe diameter, oil dynamic viscosity and water head pressure. Further, the existed experimental results of oil temperature inside the tank have also been compared with the CFD (Computer Fluid Dynamics) calculation results.