Prime Number

#1870

J/70 · 29 · StFYC

311
+29±315
Overall Rank
#1870
of 1952
Percentile
Top 96%
of 1952 boats
Rating
311
Confidence
±315
Low
Races
28
Recent Form
+8
avg last 5 races
View all J/70Compare
Last raced: Jan 26, 2019

Rating Over Time

942-110

Race History

26 races
Three Bridge Fiasco
Jan 26, 2019/20 of 265
+29
942
Three Bridge Fiasco
Jan 27, 2018/DNF
-12
913
Rolex Big Boat Series · R7
Sep 14, 2017/1 of 11
+39
926
Rolex Big Boat Series · R6
Sep 14, 2017/5 of 11
+8
886
Rolex Big Boat Series · R5
Sep 14, 2017/9 of 11
-23
878
Rolex Big Boat Series · R4
Sep 14, 2017/7 of 11
-13
901
Rolex Big Boat Series · R3
Sep 14, 2017/6 of 11
-5
914
Rolex Big Boat Series · R2
Sep 14, 2017/6 of 11
-6
919
Rolex Big Boat Series · R1
Sep 14, 2017/6 of 11
-7
925
Round the Rocks
Apr 15, 2017/6 of 82
+64
931
-24
868
Rolex Big Boat Series · R8
Sep 15, 2016/30 of 36
-20
892
Rolex Big Boat Series · R7
Sep 15, 2016/31 of 36
-31
912
Rolex Big Boat Series · R6
Sep 15, 2016/7 of 36
+39
943
Rolex Big Boat Series · R5
Sep 15, 2016/11 of 36
+17
904
Rolex Big Boat Series · R4
Sep 15, 2016/22 of 36
0
887
Rolex Big Boat Series · R3
Sep 15, 2016/22 of 36
-3
887
Rolex Big Boat Series · R2
Sep 15, 2016/26 of 36
-13
891
Rolex Big Boat Series · R11
Sep 15, 2016/24 of 36
-14
904
Rolex Big Boat Series · R10
Sep 15, 2016/28 of 36
-39
917

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 J/70” 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.