On June 27 , 1953 , two Japanese coast guard vessels landed on the East Islet , drove off the Korean guards .
On June 27 , 1953 , two Japanese coast guard vessels set up a territorial marker , but did not attempt permanent occupation .
On June 27 , 1953 , two Japanese coast guard vessels landed on the East Islet , drove off the Korean guards and set up a territorial marker , but did not attempt permanent occupation .