Similar to the mixed-cargo slave trade, the company fused transfers onto its existing trading networks, making transfers both possible and efficient. If the directors deemed a transfer necessary, they would assign it to the next ship that would pass both ports, thereby reducing costs and voyage durations. The transfer of slaves rarely incurred any additional sunk costs, as the ships used needed to pass through both destinations to accomplish its primary objective. The only expense incurred by the company was the captain’s wages—typically four pounds per slave.