these mini-ships teach pilots how to navigate major waterways | national geographic Published 8 years ago • 993K plays • Length 3:49 Download video MP4 Download video MP3 Similar videos 1:49 these mini-ships teach pilots how to navigate major waterways | national geographic 51:43 world’s toughest boat trips | the great lakes, usa | free documentary 21:53 land and sea: sea harbour pilots 3:50 towing and sailing of model emma maersk