At times of water shortage boatmen were not allowed to empty or fill a lock that was set against them, instead they had to wait for a boat to arrive from the opposite direction so that no water was wasted by working empty locks.
The number of times a product completes a cycle of moving through a warehouse or retail store; the number of times a warehouse is completely rotated; measured on a yearly basis.
this is the bulk of the game. The turn report is a series of pages showing you your position in the game along with the results of any orders you submitted on the previous turn.