Performance and safety

AVEL VAEZ

ORC's are performance catamarans. How do they compare with the rest of the production?

The chart below compares various catamaran performance and stability main criteria.

The ORC 57 is clearly in the high-performance category.
Regarding stability, the ORC 57 being very light, the stability comes from the width of the boat. The result is that the ORC 57 is in similar stability group than other the peers.

Performance boats are typically light with large sail area. These parameters are combined in the upwind sail area over the boat weight in a ratio that allows comparison between different boat design and size. On the chart vertical axis, the high performance boats are on the upper side of the chart.

Stability of multihulls is a factor of the boat width and the boat weight. The wider and heavier the boat is, the more stable. This is expressed in the righting moment which can be simplified for comparison purpose to the boat weight factor of the boat half width. On the chart horizontal axis, the more stable boats are on the right side of the chart.

Notes:

Rapido 50 and 60 are trimaran and are shown for comparison purpose only.
The Mumby 48 is made of aluminum and is relatively lighter boat.