300
#192Viper 640 · 300
395
+19±315
Overall Rank
#192
of 228
Percentile
Top 84%
of 228 boats
Rating
395
Confidence
±315
Low
Races
14
Recent Form
+17
avg last 5 races
Last raced: Aug 10, 2019
Rating Over Time
1025+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
1025
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
957
Viper 640 Pacific Coast Championship · R3
Aug 10, 2019/9 of 18
+4
930
Viper 640 Pacific Coast Championship · R2
Aug 10, 2019/11 of 18
-13
927
Viper 640 Pacific Coast Championship · R1
Aug 10, 2019/4 of 18
+99
939
Spring One Design Regatta 2019 · R7
May 11, 2019/8 of 11
-43
840
Spring One Design Regatta 2019 · R6
May 11, 2019/8 of 11
-53
883
Spring One Design Regatta 2019 · R5
May 11, 2019/4 of 11
+18
936
Spring One Design Regatta 2019 · R4
May 11, 2019/6 of 11
-42
917
Spring One Design Regatta 2019 · R3
May 11, 2019/4 of 11
+21
960
Spring One Design Regatta 2019 · R2
May 11, 2019/5 of 11
+45
939
Spring One Design Regatta 2019 · R1
May 11, 2019/7 of 11
-62
894
A Cat North American Championship
Jan 1, 2017/10 of 32
+165
955
| Date | Regatta | Place | Rating After | Change |
|---|---|---|---|---|
| Aug 10, 2019 | Viper 640 Pacific Coast Championship · R6 | 6 / 18 | 1025 | +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 | 957 | +27 |
| Aug 10, 2019 | Viper 640 Pacific Coast Championship · R3 | 9 / 18 | 930 | +4 |
| Aug 10, 2019 | Viper 640 Pacific Coast Championship · R2 | 11 / 18 | 927 | -13 |
| Aug 10, 2019 | Viper 640 Pacific Coast Championship · R1 | 4 / 18 | 939 | +99 |
| May 11, 2019 | Spring One Design Regatta 2019 · R7 | 8 / 11 | 840 | -43 |
| May 11, 2019 | Spring One Design Regatta 2019 · R6 | 8 / 11 | 883 | -53 |
| May 11, 2019 | Spring One Design Regatta 2019 · R5 | 4 / 11 | 936 | +18 |
| May 11, 2019 | Spring One Design Regatta 2019 · R4 | 6 / 11 | 917 | -42 |
| May 11, 2019 | Spring One Design Regatta 2019 · R3 | 4 / 11 | 960 | +21 |
| May 11, 2019 | Spring One Design Regatta 2019 · R2 | 5 / 11 | 939 | +45 |
| May 11, 2019 | Spring One Design Regatta 2019 · R1 | 7 / 11 | 894 | -62 |
| Jan 1, 2017 | A Cat North American Championship | 10 / 32 | 955 | +165 |
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 (±315) 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.