And now for something different. We are pleased to report that FPB-1, Avatar, has just finished her first day of testing with the swim platform extension and get-home engine. The lovely clean release above is at eight knots with the little Yanmar pushing her along.
The first day’s results are in shallow water, with moderate breeze, so we don’t have any real detail to report. What we do know is the following:
- Maneuvering at speed seems unaffected by the addition of the second prop skeg.
- The increased drag of the second prop and full skeg appears offset by the swim step extension’s drag reduction.
- With the Gori feathering prop in normal pitch mode, wide open throttle reaches 3400 RPM– so there is sufficient margin for a fully-loaded boat in head seas (engine prop curve needs only 3200 RPM).
- It looks like 8.5 knots should be possible at around 2800 revs when the prop is in overdrive mode.
- Maneuverability appears good on the get-home engine at slow speed. Clockwise turns are favored with the offset, of course, but counterclockwise also works.
- Wide open throttle on the main engine yields in excess of eleven knots.
We shall update again when more data is available.