The iceboat design with the DN on the sail originated from a
Detroit News design contest in 1937. The DN design is termed a "front-steerer", which developed among other, less-terrifying, U.S. designs of the 1930's. ("Rear-steerers" were a hoot to control). Today, DNs are very popular and sailed world-wide.
A DN top speed is
rumored at 150-MPH. (200-KPH is a long-sought record among iceboats—
162-MPH).
Perhaps because of the too-rare opportunities for iceboating on Lake Winnipesaukee (and other large lakes) there seems to be a dearth of iceboat photos among the Forum's Photoposts.
The other iceboat that IG has captured has a windsurfer-style sail. That sail was developed among World-Olympics' sailboat racing designs, and known as the "bendy-rig" for its efficiency and tuning capabilities. DN's rig has long-time experience going for it, but my money's on the other.
Cool photo—and more—here:
http://www.winnipesaukee.com/forums/...d.php?p=115031
BTW: On the horizon appears the eastern half of the Ossipee Range of mountains—with the Mt. Shaw prominence to the left.