http://english.chosun.com/site/data/...043000459.html
As I suggested a while back, experts now think it was a PRC manufactured Yu-3 torpedo that sank
Chenon. That narrows it down to the DPRK or the PRC as they are the only countries with ships armed with this make of torpedo that could have been operating in the region.
Specs:
- Diameter: 533 mm
- Length: 7.8 meter
- Weight: 1.34 ton (1.2 ton for the training version)
- Warhead: 205 kg
- Guidance: active/passive acoustic homing
- Propulsion: electrical, silver-zinc battery
- Range: 13 km
- Speed: 35 kt
- Depth: up to 400 meters