300
#88Viper 640 · 300
397
+19±314
Overall Rank
#88
of 105
Percentile
Top 84%
of 105 boats
Rating
397
Confidence
±314
Low
Races
14
Recent Form
+17
avg last 5 races
Last raced: Aug 10, 2019
Rating Over Time
1026+70Direct Competitors
Boats 300 has raced against most often, with head-to-head finish record.
Race History
14 racesViper 640 Pacific Coast Championship · R6
Aug 10, 2019/6 of 18
+19
1026
Viper 640 Pacific Coast Championship · R5
Aug 10, 2019/4 of 18
+48
1006
Viper 640 Pacific Coast Championship · R4
Aug 10, 2019/6 of 18
+27
958
Viper 640 Pacific Coast Championship · R3
Aug 10, 2019/9 of 18
+4
931
Viper 640 Pacific Coast Championship · R2
Aug 10, 2019/11 of 18
-13
928
Viper 640 Pacific Coast Championship · R1
Aug 10, 2019/4 of 18
+99
940
Spring One Design Regatta 2019 · R7
May 11, 2019/8 of 11
-43
841
Spring One Design Regatta 2019 · R6
May 11, 2019/8 of 11
-53
884
Spring One Design Regatta 2019 · R5
May 11, 2019/4 of 11
+18
937
Spring One Design Regatta 2019 · R4
May 11, 2019/6 of 11
-42
918
Spring One Design Regatta 2019 · R3
May 11, 2019/4 of 11
+21
961
Spring One Design Regatta 2019 · R2
May 11, 2019/5 of 11
+45
940
Spring One Design Regatta 2019 · R1
May 11, 2019/7 of 11
-61
895
A Cat North American Championship
Jan 1, 2017/10 of 32
+164
956
| Date | Regatta | Place | Rating After | Change |
|---|---|---|---|---|
| Aug 10, 2019 | Viper 640 Pacific Coast Championship · R6 | 6 / 18 | 1026 | +19 |
| Aug 10, 2019 | Viper 640 Pacific Coast Championship · R5 | 4 / 18 | 1006 | +48 |
| Aug 10, 2019 | Viper 640 Pacific Coast Championship · R4 | 6 / 18 | 958 | +27 |
| Aug 10, 2019 | Viper 640 Pacific Coast Championship · R3 | 9 / 18 | 931 | +4 |
| Aug 10, 2019 | Viper 640 Pacific Coast Championship · R2 | 11 / 18 | 928 | -13 |
| Aug 10, 2019 | Viper 640 Pacific Coast Championship · R1 | 4 / 18 | 940 | +99 |
| May 11, 2019 | Spring One Design Regatta 2019 · R7 | 8 / 11 | 841 | -43 |
| May 11, 2019 | Spring One Design Regatta 2019 · R6 | 8 / 11 | 884 | -53 |
| May 11, 2019 | Spring One Design Regatta 2019 · R5 | 4 / 11 | 937 | +18 |
| May 11, 2019 | Spring One Design Regatta 2019 · R4 | 6 / 11 | 918 | -42 |
| May 11, 2019 | Spring One Design Regatta 2019 · R3 | 4 / 11 | 961 | +21 |
| May 11, 2019 | Spring One Design Regatta 2019 · R2 | 5 / 11 | 940 | +45 |
| May 11, 2019 | Spring One Design Regatta 2019 · R1 | 7 / 11 | 895 | -61 |
| Jan 1, 2017 | A Cat North American Championship | 10 / 32 | 956 | +164 |
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 (±314) 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.