A beverage heater and cooler that a Maritime Self-Defense Force (MSDF) member brought aboard an MSDF destroyer without permission was probably the cause of a major fire that broke out on the vessel in December, it has been announced. The in-house investigation committee of the Maritime Staff Office said on Monday that the fire allegedly started after an electronic heater and cooler that an MSDF member brought onto the destroyer Shirane became overheated while the vessel was moored at the Yokosuka base on Dec. 14 last year. The device, designed to cool or warm beverages, was brought into the combat...