On top of that, everything is ordered by article number. So it happened on a boat that they needed two replacement bolts for the engine. The engineer wrote the order, and the captain signed it and sent it to HQ.

They were informed the order would take (a long time). When they finally got the word that the order was in, they were astonished that two heavy load trucks were waiting for them. Each containing a turbine nearly as big as their boat. Which had nearly the same inventory number as the bolts. With two digits switched.