Welcome to the Viper 640 Class

The Viper 640 is a high-performance one-design sport boat.
At 21 feet long and only 748 lbs, it combines the stiffness of a keelboat with the acceleration and planing abilities of a dinghy. The design mandate was "Simple, Clean and Effective".  The Viper has a precise and exhilarating feel on the helm, a spacious cockpit for 3 people, strict one-design class rules and ease of launching by ramp or hoist.


Want to test drive a Viper 640? Find and contact one of our builder's reps to go for a ride near you.  Life is too short to sail slow boats!
Viper 640 fun at the Newport Regatta

EFG Bank Pan American Championship

Click here for all the information about the 2014 EFG Bank Viper 640 Pan American Championship, presented by Rondar Raceboats.

How to Buy a Viper

Buying a Viper 640 is easy! Our sole Class approved builder, Rondar Raceboats, has reps covering all of North America. They're all enthusiastic Viper owners who are here to help introduce you to the Viper with a demo sail and guide you through the process of buying your own Viper 640. CLICK HERE to locate and contact the rep nearest you!

Upcoming Major Events

Pacific Coast Championship / LBRW
Long Beach, CA
June 27-29

New England Championship / Marblehead NOOD
Corinthian YC
July 25-27

Fangin' it
Sunday, 05 January 2014 22:38

Australian slang saying

1. to drive at great speed eg He was fangin' it around the corner.


The 7th Australian Sports Boat Association National Titles were sailed from the Fremantle Sailing Club.

The Fremantle Doctor lived up to its reputation with only one race under ten knots and the most in the high teens to gear busting 25+ knots.


November Sailing at Hampton Yacht Club - Fall Fling
Written by Mike Gravitt   
Sunday, 24 November 2013 22:20
On November 15, 16 and 17, Hampton Yacht Club hosted the Fall Fling one design regatta. This annual regatta included 505s, Sonars, J 70s, Viper 640s, 420s and Albacores. HYC has expressed great interest in developing a Viper fleet so with the help of RONDAR and reps Dan Tucker and Tyler Moore, factory boats were brought down and local sailors were able to crew and drive the boats in the racing. On Friday Tyler Moore conducted a racing clinic to help newcomers learn the boat and to also help more experienced Viper sailors with speed tips. On Saturday the conditions were less than spectacular with light air for November and being the right place at the right time made all the difference. The after race party was held at the beautiful home of a club member with roasted oysters, BBQ and many home made dishes that were amazing not to mention an abundance of adult beverages of all flavors. Sunday the breeze teased all morning but never filled in enough to get in a race. There is a lot of talent at HYC with the make-up teams of local sailors taking the top three spots. The top spot was taken by Olympic sailor Geoff Ewenson, second place went to local J 36 sailor David Eberwine, and third going to Mark Wheeler. HYC really put on a great regatta and RONDAR threw all it had into helping Hampton get on the map with Viper One Design sailing.
Day 4 Viper 640 North Americans: Jason Carroll and Argo Win Championship
Written by Class Admin   
Sunday, 13 October 2013 16:40


















HOUSTON, Texas. (October 12): The final day of the Viper 640 North Americans hoped to clear out a cluster at the top of the leaderboard, but forecasted thunderstorms meant that the fleet would be fortunate to get in two races in a 7-10 knot SSE breeze. Jason Carroll with his team of Chad Corning and Danny Pletsch aboard Argo entered with a 13-point lead, but the next five boats were separated by fewer than 15 points, with a few ties mixed in.

Day 2 Viper 640 North Americans: Kicking It In To Gear
Written by Class Admin   
Thursday, 10 October 2013 21:24

HOUSTON, Texas. (October 10): With a better forecast than yesterday, Viperers kicked it into gear for Day Two of the 2013 Viper North Americans in Houston. The forecast called for a building sea breeze and cooler temperatures, and sure enough, by the end of the day Vipers were planing downwind at 14 knots in 18 knots of wind.

Day two of the Viper 640 NAs started off less than promising with about 6 knots of pressure. Malcolm Gefter pulled a horizon job in Race 1, favoring the left. Jay Golison finished in 2nd with Brad Boston and Jason Carroll finishing in 3rd and 4th, respectively.

With the breeze building steadily, the second race was changed to 3 times around, although some teams did not get that memo – on the second run, the top 5 boats each sailed through the finish line with no horn before turning up to sail backward to the leeward gate, causing a large reset in the scores. Luke Lawrence was able to sneak in and snatch first place since the top 4 boats had unknowingly crossed the finish line too early. David Chapman, Peter Beardsley and Gefter finished in the top four.

Follow the thread here

View Photos Here

2013 Viper North Americans - Day One Press Release
Written by Class Admin   
Wednesday, 09 October 2013 19:40
HOUSTON, Texas. (October 9): Thanks to all the hard work over the past couple of months, the newest location of the North Americans, Houston, has gotten underway. A total of 29 boats made the trip to the Republic of Texas, with boats representing 14 different states. Racing began today and will conclude on Saturday, October 12th.

After months of waiting, the fun finally started. The first race started with light winds of about 5-6 knots and was windward/leeward twice around. Malcolm, Gefter and crew (Wilem van Waay and Victor Diaz De Leon) took and early lead in the first race but Jay Golison and crew (Steve Flam and Ched Proctor) were able to edge out and take first place.

Breeze built from 5 to 8 knots throughout the day as a cold front from Tropical Storm Karen provided some relief (84 degrees) from the typical Texas heat. Winds were shifting from 90-130 degrees but on average competitors saw about 115 degree wind angle.

<< Start < Prev 1 2 3 4 5 6 7 8 9 10 Next > End >>

Page 4 of 44