Chinese Submarine Fire

An AFX report in Forbes says that a Chinese Ming-class submarine caught fire, apparently while submerged, while operating in the South China Sea. It sounds like they were in the middle of ASW exercises, as there were several Chinese surface ships in the area.
This is the second recent incident involving the Chinese Ming-class diesel boats (basically indigenously-produced Romeos); the earlier, and much worse, accident occurred just over two years ago, when Submarine #361 suffered a loss of her entire crew while conducting at sea; many articles say it was likely due to a diesel piping casualty, but I think it was more likely a carbon monoxide or other poisonous gas issue (an more general analysis is located here).

Staying at PD...