Also, steamships needed to put in frequently to refuel, so up until the 1870s the long-distance, highly competitive tea trade was still mainly the preserve of sailing ships.
又因為汽船需要不斷靠岸補充燃料，所以直到十九世紀七○年代，遠渡重洋、競爭激烈的茶葉貿易，仍以帆船為主。