http://www.youtube.com/watch?v=7vofEMty4vM "This video shows the difference in turning radius between a submarine with the rudder placed ahead of the propeller (RED submarine) and a submarine with the rudder placed behind the propeller (GREEN submarine). When we built a one person, dry, pedal-powered" http://www.video.scubadata.com/index.php?tag=submersible&PHPSESSID=e4 Regards, Szybowski |