Method for acquiring location information of observation buoy reflecting influence of ocean current and method for assessing damage risk relating to spilled oil dispersion of sunken ship by using same location information

A method of obtaining location information of an observation buoy reflecting influence of an ocean current, performed in target sea area by a location tracking device comprising one or more observation buoys (100) and a relay buoy (200), the method comprising:

• step (S10) of detecting, by a relay buoy (200), a voltage of a power supply (130) of an observation buoy (100);
• step (S20) of determining, by the relay buoy, whether a voltage of the power supply of the observation buoy is equal to or lower than a predetermined voltage;
• step (S30) of, when the voltage of the power supply of the observation buoy is higher the predetermined voltage in the voltage determination step (S20), receiving, by the relay buoy, location information from the observation buoy;
• step (S40) of determining, by the relay buoy, whether a signal level of the location information is equal to or lower than a predetermined level;
• and
• step (S50) of, when the signal level of the location information is higher than predetermined level in the level determination step (S40), determining, by the relay buoy, the received location information to be location information of an observation buoy in the target sea area and transmitting the location information to a weather information management server (S).