The mystery of the ’ghost boats’ in the Sea of Japan

First of 2 parts

OFF THE COAST OF SOUTH KOREA: The battered wooden “ghost boats” drift through the Sea of Japan for months, their only cargo the corpses of starved North Korean fishermen whose bodies have been reduced to skeletons. Last year more than 150 of these macabre vessels washed ashore in Japan, and there have been more than 500 in the past five years.