Hello; I always think ships are one of the few mechanical devices that have soul. So these sinkings whether deliberate or not always makes me sad. Possibly because they're also one of the oldest mechanical devices with a history stretching back tens of thousands of years. I know this might sound silly, but I feel sad when a boat sinks. Especially, if it's a boat that I've known for years. It's like burying a friend. The first (fishing) vessel was not at sea , the ships shown at 1:09, 1:57, 2:19, 2:52, 3:30 and 4:43 were decommissioned and sunk on purpose. The last ship was sunk on purpose after it sustained irreparable damage, and the second before last beached after either its anchor chain broke or it 'broke free from its moorings' in a storm - I am not sure one could call that 'at sea' either.