The boat featured in the photos for the ad is Blue Norther, the eleventh C-43 built. Blue Norther is also the boat that starred as the boat Amanda in the second season of the ABC series Revenge.
|From the code in the information-request box I think this ad was published in 1970.|
|This is the high-folio page of a two-page ad in Yachting magazine. I'm not sure of the date, but the code in the response box makes me think it was 1970.|
The interesting part of the second ad reads: "This is undoubtedly one of the most aggressively designed ocean racers ever created by famed naval architect, Bill Tripp.... Classified as light-displacement, the Columbia 43 exhibits the highest sail-area-to-wetted-surface ratio of any of his designs. The rig towers 54 feet above the deck. Powerful headsails are permitted with a "J" measurement of 17.8'.
"And there are some highly potent design dynamics below the waterline as well. The Columbia 43 has a noticeably long waterline...32'8". By carrying the lateral distribution of displacement well into both the bow and stern sections, Tripp has simulated the wave system produced by an even longer waterline. When you lengthen the waterline, you increase the speed. This high prismatic coefficient* story is something your competitors will ask you about after the race!
|Thirty grand was a lot of money back in 1970. You could buy a nice house in Seattle for about than half that back then. You could also buy six brand new Corvettes for that price.|
*Prismatic coefficient (Cp) is the volume (V) divided by Lpp x Ax. It displays the ratio of the immersed volume of the hull to a volume of a prism with equal length to the ship and cross-sectional area equal to the largest underwater section of the hull (midship section). This is used to evaluate the distribution of the volume of the underbody. A low or fine Cp indicates a full mid-section and fine ends, a high or full Cp indicates a boat with fuller ends. Planing hulls and other highspeed hulls tend towards a higher Cp.