Complex sentence: Although "York" was not intended to work as a tugboat, it pushed and pulled barges on Lake Okanagan during fruit season to move perishables to Okanagan Landing so they could be readied for shipment to markets.
Split into simpler sentences: Although "York" was not intended to work as a tug boat it pushed and pulled barges on Lake Okanagan. During fruit season to move perishables to Okanagan Landing so they could be readied for shipment to markets.