International A Class

It is a measurement controlled classes administered by the International Radio Sailing Association.

The class is a designated IRSA International class entitled to hold World Championships officially recognised by the International Sailing Federation.

The RA class rules are loosely based on the 5.5 Metre.

Modern boats use the latest carbon fibre technology with displacements typically between 13 – 16 kg, making them substantial yachts.

Unclear of the status of these events as the International Radio Sailing Association only joined ISAF in the mid-1990s.