Rolling Thunder

#544

Viper 640 · IND 188 · HYC

980
+15±94
Overall Rank
#544
of 1826
Percentile
Top 30%
of 1826 boats
Rating
980
Confidence
±94
High
Races
13
Recent Form
-18
avg last 5 races
View all Viper 640Compare
Last raced: Nov 2, 2025

Rating Over Time

1168+14

Direct Competitors

Rolling Thunder hasn't raced enough times against the same boats yet to surface direct rivals. Check back after a few more series.

Race History

13 races

About the Rating

Ratings are computed using Glicko-2, a chess-style system that considers who you beat and who beat you. Winning against higher-rated boats earns more points than beating lower-rated boats.

The overall rank compares this boat to all others across every class. To see how it stacks up within its class, use the “View all Viper 640” link above.

The confidence band (±94) shows how certain we are about this rating. It narrows as more races are completed and widens during periods of inactivity.

The shaded area on the chart represents the 95% confidence interval — the true skill of this boat likely falls within that range.