Villagers in Krabi's Nua Khlong district yesterday clamoured for authorities to haul off a live pre-World War II torpedo that was found floating in the sea.
They said they were afraid the device, which could destroy an area in the range of 5 kilometres, might explode because of exposure to the heat.
Ban Koh Jam fishermen in tambon Koh Sriboya had discovered the 400-by-50-centimetre cylinder floating between Koh Cham and Koh Phi Phi on Tuesday.
They dragged it back to shore with the aim of dismantling it and selling the pieces to a junk shop, but were stopped by officials.
A bomb-disposal source said this weapon was made in Japan in 1937 and Thailand bought it for Bt10,000 to use during wartime.
Pol Sr Sgt-Major Siwadol Yodmuen, an inspector at Khlong Khanan Police Station, said an ordnance-disposal team from the Third Naval Area Command in Phuket had been contacted to inspect the torpedo later in the day, where it was kept in a sealed-off area at Mutu Pier.