I also had another oil sample that had high coolant. We weren't losing a lot of coolant, very little actually, almost not enough to notice but...
If anything would survive a fall off of a freighter, that boat would be a very good pick. A fiberglass yacht OTOH would probably be a disaster.
Yes, I had one with a similar situation captpkilbride. Same/similar scenario, all of a sudden really high copper, and engine was almost out of...