Trading efficiency

Trading efficiency, or TE, in the fictional TradeWars 2002 universe, is a factor for comparing the overall ability of different ship types to use turns effectively. The Merchant Freighter is the most efficient, having a TE of 100.

Trading efficiency takes into consideration:
 * "Gross trading capacity," the number of holds divided by the number of turns it takes to move to the next sector.
 * Turns used at the beginning of each session, traveling to the first trading port.
 * Turns used to move to a new trading pair, once a particular pair of ports has been drained. Ships with many holds lose some of their efficiency because they trade out the ports in only a few round trips and must move on to another pair much more often, thereby wasting a greater percentage of their total turns.
 * Turns used to travel back home from the last trading pair of the day. T-warp ships gain a small advantage here.

Reference
How To Play TradeWars And Stay Alive!