Emergency rudder designs
Each competitor in the SSS TransPac race from San Francisco to Hanalei, Kauai (Hawaii) is required to meet this rule:
4.33 An alternative method of steering the yacht in any sea condition in the event of rudder failure. The Race
Committee may require that this method be demonstrated.
The expected result is an emergency rudder, which is often a custom design and build job for the boat.
In the interests of sharing the experience of the competitors, here is a compendium of designs submitted by the 2008 TransPac race competitors.
Scanmar International's MRud: