I was actually there when the eruption started. It was about 5am when a very large underwater noise was heard. I was on HMS Duncan at the time and we immediately went to 'Emergency Stations' as no one knew what was happening. We were all on the upper deck and as dawn broke we saw smoke coming from the surface of the sea. We closed the scene and realised that this was a volcanic eruption under the sea taking place. We and the ship were covered in ash. Amazing experience!!!