Sir Isaac
#487· 18944 · OIYC
912
+6±50
Overall Rank
#487
of 1101
Percentile
Top 44%
of 1101 boats
Rating
912
Confidence
±50
High
Races
59
Recent Form
+2
avg last 5 races
Last raced: Jan 1, 2026
Rating Over Time
1011+219Direct Competitors
Boats Sir Isaac has raced against most often, with head-to-head finish record.
Jolly Green1
J/80 · Rating 871
10–4–5
71% wins · 19 races
Lodos41
J/111 · Rating 1017
6–8
43% wins · 14 races
MistUSA 52
— · Rating 705
10–4
71% wins · 14 races
Flash44
— · Rating 743
13–0
100% wins · 13 races
Madrona79067
— · Rating 965
3–2–7
60% wins · 12 races
Absolutely3909
Farr 39ML · Rating 918
1–9–1
10% wins · 11 races
Panic482
J/105 · Rating 892
4–5
44% wins · 9 races
Terramoto59902
— · Rating 1178
2–5
29% wins · 7 races
Race History
51 racesRace to the Straits
Jan 1, 2026/1 of 3
+6
1011
Winter Vashon (December 6, 2025) SSS -1
Dec 6, 2025/1 of 8
+28
1005
Swiftsure International Yacht Race 2025
May 24, 2025/1 of 7
+28
977
Duwamish Head
Jan 4, 2025/7 of 9
-24
949
Duwamish Head
Jan 4, 2025/7 of 9
-27
973
Duwamish Head
Jan 4, 2025/7 of 9
-30
1000
Foulweather Bluff Race
Jan 1, 2025/3 of 5
-7
1130
Race to the Straits
Jan 1, 2025/2 of 7
-100
1030
Winter Vashon (December 7, 2024) SSS -1
Dec 7, 2024/2 of 10
+17
1101
Classic Mariners Regatta · R2
Jun 1, 2024/4 of 12
+12
1084
Classic Mariners Regatta · R1
Jun 1, 2024/6 of 12
-6
1071
41st Classic Mariners Regatta 2024 · R2
Jun 1, 2024/4 of 12
+10
1078
41st Classic Mariners Regatta 2024 · R1
Jun 1, 2024/6 of 12
-12
1068
Swiftsure International Yacht Race 2024
May 25, 2024/4 of 32
+43
1080
GHYC - Islands Race 2024
Mar 16, 2024/8 of 12
-28
1037
GHYC - Islands Race 2024
Mar 16, 2024/8 of 12
-33
1065
24 Islands Race Southern Sound Series
Mar 16, 2024/8 of 12
-40
1098
GHYC - Islands Race 2024
Mar 16, 2024/8 of 12
-46
1138
GHYC - Islands Race 2024
Mar 16, 2024/8 of 12
-53
1184
Girts Rekevics Memorial Foulweather Race 2024
Feb 24, 2024/1 of 9
+17
1236
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 ” link above.
The confidence band (±50) 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.