http://ohgizmo.disqus.com/enWed, 25 Jun 2008 12:28:44 -0000http://www.ohgizmo.com/2008/06/25/hyundais-thrust-fin-is-a-small-upgrade-that-could-result-in-large-savings-for-shipping-companies/#comment-1767361The fin probably reduces turbulence after the propeller. <br>I am surprised that they only make 30 a year. This means it takes about 12 days to make one. They probably are custom parts and have to be re-designed for each ship.NathirWed, 25 Jun 2008 12:28:44 -0000