I don't know about a brig or a morgue, but there was a medical emergency when we were on the 4 day Wonder cruise.
It was on our day at sea, when the ship normally just sort of piddles along, not moving very fast.....when all of a sudden it started burning rubber so to speak.....and within a very short time we could see shore, though at first we couldn't recognize where we were......it turned out we were approaching Palm Beach......a coast guard medical emergency boat came out to meet us and then as the whole ship watched, a 12 year old girl (who had been diagnosed with possible appendicitis by the ship doctor) and her entire family and their stuff were moved over to the coast guard ship......and then the coast guard ship set off for shore....
i should add that many many many small craft came out for the show as well......it's not often they see a Disney ship near their shores....
and then the Wonder headed "out to sea" again for the rest of our day.....it was very interesting how close to shore we were on the day at sea and how far north the ship was by that point.....