I realize this is a cruising forum, but it would be really nice if fxykty or Ratel, or other performance
catamaran owners could publish polar performance diagrams or tables for their boats in their cruising configurations.
The only way I know to develop these polars collecting them by
software like Expedition (not cheap) during sail testing over an extended period, with carefully calibrated instrumentation. Most cruisers don't have the
budget or the motivation. In addition, each data point has to be evaluated for biases like
current or windshear, so the
marketing department doesn't diddle the data.
We probably will never see these polars unless people start seriously
racing cats, and will have to make do with inane pronouncements like "faster than
wind speed".