Shamrock
#812Harbor 20 · 51 · CYC
779
±56
Overall Rank
#812
of 1169
Percentile
Top 69%
of 1169 boats
Rating
779
Confidence
±56
High
Races
90
Recent Form
+7
avg last 5 races
Last raced: Jan 1, 2026
Rating Over Time
892+100Direct Competitors
Boats Shamrock has raced against most often, with head-to-head finish record.
Isle Run87471
Catalina 36 · Rating 884
13–40–20
25% wins · 73 races
Island Surf97000
— · Rating 808
17–19–19
47% wins · 55 races
Z Force97309
— · Rating 1016
12–25–16
32% wins · 53 races
Shibui7521
Cal 40 · Rating 931
7–19–16
27% wins · 42 races
Melokia56360
Beneteau 36.7 · Rating 880
5–11–15
31% wins · 31 races
Jabberwock67035
— · Rating 623
5–17–5
23% wins · 27 races
Singapore Sling1
— · Rating 558
11–8
58% wins · 19 races
Go Mall28
— · Rating 689
16–2
89% wins · 18 races
Race History
90 racesJoe McKane Summer Twilight Series · R2
Jan 1, 2026/ENT
0
892
Beer Cans
Jan 1, 2025/6 of 6
-5
892
SBC Championships 2023 · R3
Oct 7, 2023/3 of 6
+12
897
SBC Championships 2023 · R2
Oct 7, 2023/3 of 6
+13
885
SBC Championships 2023 · R1
Oct 7, 2023/3 of 6
+14
872
Navy Cup 2023 · R3
Jul 15, 2023/3 of 5
+4
859
Navy Cup 2023 · R2
Jul 15, 2023/4 of 5
-11
854
Navy Cup 2023 · R1
Jul 15, 2023/2 of 5
+19
865
Navy Cup 2023 · R3
Jul 15, 2023/3 of 5
+5
846
Navy Cup 2023 · R2
Jul 15, 2023/4 of 5
-10
841
Navy Cup 2023 · R1
Jul 15, 2023/2 of 5
+21
851
Navy Cup 2022 · R3
Jul 16, 2022/5 of 7
-17
830
Navy Cup 2022 · R2
Jul 16, 2022/5 of 7
-20
846
Navy Cup 2022 · R1
Jul 16, 2022/5 of 7
-23
866
Neil McGuinness Twilight Series · R4
Sep 3, 2021/2 of 5
-4
890
Neil McGuinness Twilight Series · R3
Aug 21, 2021/1 of 5
0
894
Neil McGuinness Twilight Series · R2
Aug 6, 2021/2 of 5
+10
893
Joe McKane Series (6/4,6/11,6/25,7/9) · R4
Jul 9, 2021/2 of 4
-5
883
Joe McKane Series (6/4,6/11,6/25,7/9) · R3
Jun 25, 2021/2 of 4
0
888
Joe McKane Series (6/4,6/11,6/25,7/9) · R1
Jun 4, 2021/DNF
0
889
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 Harbor 20” link above.
The confidence band (±56) 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.