Below Canvas: Large size rudder for rivers and lake steering (rudder blade 100mm x 80mm).
Fin3 is used for Swift boats built after April 2009
Material: Stainless
Above Canvas: Large size rudder for rivers and lake steering (rudder blade 100mm x 80mm)
Fin1 was used on all Swift boats built before March 2009 with the rudder yoke above the canvas deck.
Material: Stainless