McCloaked
@Livesinafield: "I think 3km is a lot I'm sure a 6kt current can't move 20kilos of metal that's sat in the sand"
At 6kt that distance represents about 20 minutes - if one of two pieces sinks straight away after surface impact and disruption, and the other floats for 20 minutes before sinking carried by a current flowing at that speed, that does not seem particularly unrealistic?
After it sinks the current will move the wreckage until it becomes anchored to the sea bed e.g. it skidded along the bottom until rotated so the VS lodged into the sea bed.