|Wai Aniwa during the 1971 NZ trials|
The introduction of the new IOR rule meant a rush to the design board to come up with new yachts for the regatta, both in New Zealand and in those countries intending to challenge for the trophy, including Germany, Italy, Sweden and Switzerland. The conversion from the RORC rule to IOR lead to a general reduction in ratings for a given design, making it necessary for existing boats to increase their rated sail area, or take up other measures that would bring up their ratings to the relevant class limit. That meant a busy summer for measurers, converting and optimising yachts designed to the RORC rule to measure as One Tonners under the new IOR.
|Young Nick working up before the trials - she benefited from longer lead up time compared to her rivals (photo Sea Spray magazine)|
|Escapade being launched from Steel Yachts and Launches yard on the Tamaki River, 6 August 1970 (photo NZ Yachting & Boating magazine)|
|Preparation for the trials included the need to complete the many measurements involved in obtaining an IOR certificate. Here triallist Concord (sistership to Rainbow II) is subjected to the inclining tests in the still waters of the Tamaki River required to measure her stability (photo Sea Spray magazine)|
Other than increased size and length, other expensive developments which featured on the new boats included aluminium hulls and hydraulic boom vangs. Wai Aniwa (above), skippered by Chris Bouzaid, even utilised a pivoting keel, designed to provide greater lift to windward, and allow deeper sailing angles downwind (the photo to the right shows Wai Aniwa being lowered onto the central pivot shaft). She was built in aluminium and was finished only days before the trials. S&S designs were to the fore in this era, and two new boats were commissioned from the famous New York office, Young Nick, and an aluminium sistership Escapade. Other new yachts included the John Lidgard-designed Runaway, the C&C design Mustang and the Carter designed Outrage.These new boats joined eleven other One Tonners of varying sizes, shapes and pedigrees for the trials series.
|Escapade during the 1971 trials (photo Sea Spray)|
|Moonlight leads Wai Aniwa downwind during the 1971 trials (photo Gary Baigent collection)|
|The S&S design Young Nick powers upwind during the 1971 trials. Note the then-fashionable bendy boom (photo Sea Spray magazine).|