Re: Least cargo you've ever carried?
A key, to a safe.
It was on an offshore platform, and inside the safe were explosives, which were needed urgently. The nearest spare was onshore, about 100 miles away.
So, off we went and picked up the key. Attached to it was a luggage label, on which was printed the key's details.
We returned to the platform, and handed the key over when we shut down. The chap ran off with it and disappeared down the stairs. When we followed a few minutes later, there was a distinct atmosphere downstairs.
The bloke with the key, overjoyed at his new possession, had thrown it to his mate. The wind had caught on the label, and taken it and the key over the side.
I looked at the platform manager, who looked at the bloke who needed the explosives, who looked back at the platform manager, who, with a look of despair in his eyes, looked back at me, who turned round and walked back up to the helideck.
Very small items are not all that uncommon offshore; often small enough to fit into an envelope. With operating costs higher than those in the aviation world, and penalties for loss of production quoted in international telephone number type figures, it is understandable.