Shame the cable is overhead parenting tall boats / sail boats from going past... Maybe someone clever could design an underwater rail instead of the cable?,(reply>), With that much current,  I dont think a sailboat would do well trying to go anywhere but downstream.  <br><br>Did you see how fast that other boat stopped by just letting off the throttle?  Then probably had to use almost full throttle to get back up to speed when it stopped for the ferry?