boomer
#1627Viper 640 · 105 · BOSTYC
629
+7±132
Overall Rank
#1627
of 1826
Percentile
Top 89%
of 1826 boats
Rating
629
Confidence
±132
Medium
Races
10
Recent Form
+12
avg last 5 races
Last raced: Dec 15, 2024
Rating Over Time
894+56Direct Competitors
Boats boomer has raced against most often, with head-to-head finish record.
Race History
10 racesViper 640 North American Championship · R10
Dec 15, 2024/19 of 30
+7
894
Viper 640 North American Championship · R9
Dec 15, 2024/23 of 30
-14
887
Viper 640 North American Championship · R8
Dec 15, 2024/23 of 30
-11
901
Viper 640 North American Championship · R6
Dec 14, 2024/9 of 30
+68
912
Viper 640 North American Championship · R5
Dec 14, 2024/21 of 30
+12
844
Viper 640 North American Championship · R4
Dec 14, 2024/19 of 30
+21
832
Viper 640 North American Championship · R7
Dec 13, 2024/20 of 30
+19
811
Viper 640 North American Championship · R3
Dec 13, 2024/28 of 30
-46
792
Viper 640 North American Championship · R2
Dec 13, 2024/21 of 30
-1
838
Viper 640 North American Championship · R1
Dec 13, 2024/19 of 30
+46
838
| Date | Regatta | Place | Rating After | Change |
|---|---|---|---|---|
| Dec 15, 2024 | Viper 640 North American Championship · R10 | 19 / 30 | 894 | +7 |
| Dec 15, 2024 | Viper 640 North American Championship · R9 | 23 / 30 | 887 | -14 |
| Dec 15, 2024 | Viper 640 North American Championship · R8 | 23 / 30 | 901 | -11 |
| Dec 14, 2024 | Viper 640 North American Championship · R6 | 9 / 30 | 912 | +68 |
| Dec 14, 2024 | Viper 640 North American Championship · R5 | 21 / 30 | 844 | +12 |
| Dec 14, 2024 | Viper 640 North American Championship · R4 | 19 / 30 | 832 | +21 |
| Dec 13, 2024 | Viper 640 North American Championship · R7 | 20 / 30 | 811 | +19 |
| Dec 13, 2024 | Viper 640 North American Championship · R3 | 28 / 30 | 792 | -46 |
| Dec 13, 2024 | Viper 640 North American Championship · R2 | 21 / 30 | 838 | -1 |
| Dec 13, 2024 | Viper 640 North American Championship · R1 | 19 / 30 | 838 | +46 |
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 (±132) 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.