Merchant ships carried ’logs for their chartered ports of call — the Lady had two — but the charter ports were the smallest part of a merchant trip. The number of destinations for which Navy analogs were available was hardly a hatful out of the galaxies. Without a ’log to point the way for him, it was up to the IBMan to plot co-ordinates for where a hole ought to be. With luck and skill he could bring the ship out into normal space again somewhere within SolNav reach of the destination. With the tiniest error in computation, a ship might be lost forever in some distant universe with no stars to steer her home.