The "Ben Franklin" is a replica of the liquid natural gas (LNG) carrier (125 000 m3), fitted with Controllable Pitch Propeller and Schilling rudder if requested.
The CPP on this model is a left-hand turning propeller when sailing ahead.
However, it behaves like a right handed propeller when sailing astern.
This is because the propeller is left-hand turning at any time, as it is the blades that change pitch instead of the propeller shaft going reverse.
As an option, this model can also sail with a traditional fixed pitch as a left-handed propeller.
Another option on this ship is a Schilling rudder which has fish-tail shape and a maximum rudder angle of 70°. With this angle, the Schilling rudder has a 77% propeller disk coverage instead of 52.5% for a conventional rudder with 35° max rudder angle.