Article published on the 2009-05-18 Latest update 2009-05-18 12:28 TU
"Using the mixed oxide, MOX fuel at the nuclear plant here is suicidal," said local activist Yoshika Shiratori in Omoaezaki fishing port on Japan's Pacific coast.
"Once a big earthquake hits, there is no doubt this entire bay, the Pacific Ocean and all the seas around Japan would become contaminated," he told the AFP news agency.
A major quake just two years ago caused a small radiation leak and a fire, at the world's biggest nuclear plant, Kashiwazaki-Kariwa, north-west of the capital, Tokyo.
Japan relies on nuclear power for nearly one-third of its domestic electricity needs. The ship is to continue its journey under guard from the port in central Sizuoka prefecture to two other harbours near nuclear plants in south-western Japan.
MOX fuel is a blend of plutonium and reprocessed uranium. It was recycled by French nuclear firm Areva. Japan has its own nuclear fuel reprocessing plant in the north of the country, but has not yet opened due to objections from the local community.
Japan received a shipment of MOX eight years ago, but none of it has been used because of a data cover-up scandal.
The shipment from France took two months to arrive and a British police team was on board to head off possible hijackers.