J/88 performance analysis | RegattaPages Research

Event or session · 6 sessions

All sessions · 83 analyzed tacks · 74 unavailable

Instrument performance

Speed through the turn

Type Turn

83 analyzed tacks74 not analyzed17 s median turn duration16 s median recovery

Aligned tack speed

83 turns · BSP kt · median and middle half

T 0 sMEDIAN 4.8 ktMIDDLE HALF 4.2 kt–5.3 ktN 83

The shaded band holds the middle half of the turns at each moment. Faint lines show individual turns.

Boat speed through tacks, aligned at the turn
Seconds from turn (s)	Median	Lower quartile	Upper quartile	Turns
-29	5.9 kt	5.3 kt	6.2 kt	82
-28	5.9 kt	5.2 kt	6.2 kt	83
-27	5.9 kt	5.2 kt	6.2 kt	83
-26	5.9 kt	5.3 kt	6.1 kt	83
-25	5.9 kt	5.3 kt	6.2 kt	83
-24	5.8 kt	5.3 kt	6.2 kt	83
-23	5.8 kt	5.2 kt	6.3 kt	83
-22	5.8 kt	5.3 kt	6.2 kt	83
-21	5.8 kt	5.3 kt	6.2 kt	83
-20	5.7 kt	5.2 kt	6.2 kt	83
-19	5.7 kt	5.3 kt	6.1 kt	83
-18	5.7 kt	5.3 kt	6.1 kt	83
-17	5.7 kt	5.3 kt	6.2 kt	83
-16	5.7 kt	5.3 kt	6.3 kt	83
-15	5.7 kt	5.2 kt	6.2 kt	83
-14	5.7 kt	5.2 kt	6.2 kt	83
-13	5.7 kt	5.2 kt	6.2 kt	83
-12	5.8 kt	5.3 kt	6.2 kt	83
-11	5.9 kt	5.3 kt	6.2 kt	83
-10	5.9 kt	5.2 kt	6.1 kt	83
-9	5.9 kt	5.2 kt	6.1 kt	83
-8	5.9 kt	5.3 kt	6.1 kt	83
-7	5.8 kt	5.3 kt	6.1 kt	83
-6	5.8 kt	5.3 kt	6.1 kt	83
-5	5.8 kt	5.3 kt	6.1 kt	83
-4	5.7 kt	5.1 kt	6.1 kt	83
-3	5.4 kt	4.9 kt	6.0 kt	83
-2	5.3 kt	4.6 kt	5.9 kt	83
-1	5.0 kt	4.4 kt	5.6 kt	83
0	4.8 kt	4.2 kt	5.3 kt	83
1	4.5 kt	4.0 kt	5.0 kt	83
2	4.4 kt	4.0 kt	4.8 kt	83
3	4.3 kt	4.0 kt	4.7 kt	83
4	4.4 kt	4.0 kt	4.7 kt	83
5	4.5 kt	4.1 kt	4.8 kt	83
6	4.6 kt	4.2 kt	4.9 kt	83
7	4.7 kt	4.3 kt	5.1 kt	83
8	4.9 kt	4.4 kt	5.2 kt	83
9	5.0 kt	4.4 kt	5.4 kt	83
10	5.1 kt	4.5 kt	5.6 kt	83
11	5.2 kt	4.6 kt	5.7 kt	83
12	5.3 kt	4.7 kt	5.7 kt	83
13	5.4 kt	4.8 kt	5.8 kt	83
14	5.5 kt	4.8 kt	5.8 kt	83
15	5.5 kt	4.9 kt	5.9 kt	83
16	5.7 kt	5.0 kt	6.0 kt	83
17	5.7 kt	5.1 kt	6.1 kt	83
18	5.7 kt	5.2 kt	6.0 kt	83
19	5.8 kt	5.2 kt	6.1 kt	83
20	5.8 kt	5.3 kt	6.1 kt	83
21	5.8 kt	5.3 kt	6.1 kt	83
22	5.8 kt	5.3 kt	6.1 kt	83
23	5.7 kt	5.3 kt	6.1 kt	83
24	5.8 kt	5.4 kt	6.2 kt	82
25	5.9 kt	5.5 kt	6.2 kt	82
26	5.9 kt	5.5 kt	6.3 kt	82
27	5.9 kt	5.5 kt	6.2 kt	82
28	5.9 kt	5.4 kt	6.2 kt	82
29	5.9 kt	5.4 kt	6.2 kt	82
30	6.0 kt	5.5 kt	6.2 kt	82
31	5.9 kt	5.5 kt	6.2 kt	82
32	5.9 kt	5.4 kt	6.2 kt	82
33	5.9 kt	5.4 kt	6.2 kt	82
34	5.9 kt	5.5 kt	6.3 kt	82
35	5.9 kt	5.5 kt	6.3 kt	82
36	5.9 kt	5.5 kt	6.2 kt	82
37	5.9 kt	5.5 kt	6.2 kt	82
38	5.8 kt	5.4 kt	6.1 kt	82
39	5.9 kt	5.5 kt	6.1 kt	82
40	5.9 kt	5.5 kt	6.2 kt	82
41	5.9 kt	5.4 kt	6.2 kt	82
42	5.8 kt	5.4 kt	6.3 kt	82
43	5.8 kt	5.4 kt	6.2 kt	82
44	5.8 kt	5.4 kt	6.2 kt	82
45	5.9 kt	5.4 kt	6.2 kt	82
46	5.9 kt	5.5 kt	6.2 kt	82
47	5.9 kt	5.4 kt	6.2 kt	82
48	5.9 kt	5.4 kt	6.3 kt	82
49	5.9 kt	5.4 kt	6.3 kt	82
50	5.9 kt	5.4 kt	6.2 kt	82
51	5.9 kt	5.5 kt	6.2 kt	82
52	5.9 kt	5.5 kt	6.2 kt	82
53	5.9 kt	5.5 kt	6.2 kt	82
54	5.9 kt	5.5 kt	6.3 kt	82
55	5.9 kt	5.5 kt	6.3 kt	82
56	5.9 kt	5.5 kt	6.3 kt	80
57	5.9 kt	5.6 kt	6.3 kt	80
58	5.9 kt	5.5 kt	6.3 kt	80
59	5.9 kt	5.5 kt	6.3 kt	80
60	5.9 kt	5.5 kt	6.3 kt	80
61	5.9 kt	5.5 kt	6.3 kt	80
62	5.9 kt	5.5 kt	6.3 kt	80
63	5.9 kt	5.5 kt	6.3 kt	80
64	5.9 kt	5.5 kt	6.4 kt	80
65	5.9 kt	5.6 kt	6.3 kt	80
66	5.9 kt	5.5 kt	6.3 kt	80
67	5.9 kt	5.6 kt	6.3 kt	80
68	6.0 kt	5.5 kt	6.2 kt	80
69	6.0 kt	5.5 kt	6.3 kt	80
70	5.9 kt	5.5 kt	6.2 kt	80
71	5.8 kt	5.5 kt	6.3 kt	80
72	6.0 kt	5.4 kt	6.3 kt	80
73	5.9 kt	5.4 kt	6.4 kt	80
74	5.9 kt	5.6 kt	6.3 kt	79
75	5.9 kt	5.6 kt	6.2 kt	79
76	5.9 kt	5.6 kt	6.3 kt	79
77	5.9 kt	5.6 kt	6.3 kt	79
78	5.9 kt	5.5 kt	6.3 kt	79
79	5.9 kt	5.5 kt	6.3 kt	79
80	5.9 kt	5.5 kt	6.3 kt	79
81	5.8 kt	5.5 kt	6.3 kt	79
82	5.8 kt	5.5 kt	6.3 kt	78
83	5.9 kt	5.5 kt	6.2 kt	78
84	5.8 kt	5.4 kt	6.2 kt	78
85	5.8 kt	5.5 kt	6.3 kt	77
86	5.9 kt	5.4 kt	6.3 kt	77
87	5.9 kt	5.5 kt	6.3 kt	76
88	5.9 kt	5.6 kt	6.3 kt	76
89	5.9 kt	5.5 kt	6.3 kt	76
90	5.9 kt	5.4 kt	6.3 kt	76
91	5.9 kt	5.5 kt	6.3 kt	76
92	5.8 kt	5.5 kt	6.3 kt	76
93	5.8 kt	5.5 kt	6.3 kt	76
94	5.8 kt	5.5 kt	6.3 kt	76
95	5.9 kt	5.5 kt	6.3 kt	76
96	5.9 kt	5.5 kt	6.3 kt	76
97	5.9 kt	5.5 kt	6.3 kt	76
98	5.9 kt	5.5 kt	6.3 kt	76
99	5.9 kt	5.5 kt	6.3 kt	76
100	5.9 kt	5.5 kt	6.3 kt	76
101	5.9 kt	5.6 kt	6.4 kt	76
102	5.9 kt	5.6 kt	6.4 kt	76
103	5.9 kt	5.6 kt	6.3 kt	76
104	5.8 kt	5.5 kt	6.3 kt	76
105	5.8 kt	5.6 kt	6.3 kt	76
106	5.9 kt	5.6 kt	6.3 kt	76
107	5.9 kt	5.6 kt	6.3 kt	76
108	5.9 kt	5.6 kt	6.2 kt	76
109	6.0 kt	5.6 kt	6.2 kt	76
110	6.0 kt	5.5 kt	6.2 kt	76
111	5.9 kt	5.6 kt	6.3 kt	76
112	5.9 kt	5.5 kt	6.2 kt	76
113	5.9 kt	5.6 kt	6.3 kt	76
114	5.9 kt	5.6 kt	6.3 kt	76
115	5.9 kt	5.5 kt	6.4 kt	76
116	5.9 kt	5.5 kt	6.4 kt	76
117	6.0 kt	5.6 kt	6.4 kt	76
118	6.0 kt	5.6 kt	6.4 kt	76
119	5.9 kt	5.6 kt	6.4 kt	73

Selected tack

T 0 sSPEED 5.4 kt

Entry 6.1 kt · low 4.2 kt

BSP through the selected tack
Seconds from turn (s)	BSP
-29.1	6.2 kt
-28.2	6.2 kt
-27.1	6.2 kt
-26.2	6.2 kt
-25.1	6.2 kt
-24.2	6.3 kt
-23.2	6.4 kt
-22.3	6.4 kt
-21.2	6.2 kt
-20.3	6.2 kt
-19.2	6.1 kt
-18.3	6.1 kt
-17.2	6.2 kt
-16.3	6.3 kt
-15.2	6.3 kt
-14.3	6.3 kt
-13.2	6.3 kt
-12.3	6.1 kt
-11.2	6.0 kt
-10.3	6.0 kt
-9.2	5.9 kt
-8.4	6.0 kt
-7.2	6.0 kt
-6.4	6.1 kt
-5.3	6.2 kt
-4.4	6.1 kt
-3.3	6.1 kt
-2.5	6.0 kt
-1.4	5.8 kt
-0.5	5.4 kt
0.7	5.0 kt
1.5	4.7 kt
2.6	4.4 kt
3.5	4.2 kt
4.6	4.3 kt
5.4	4.6 kt
6.6	4.8 kt
7.4	5.2 kt
8.5	5.3 kt
9.4	5.3 kt
10.5	5.5 kt
11.4	5.6 kt
12.5	5.5 kt
13.4	5.6 kt
14.5	5.8 kt
15.4	6.0 kt
16.5	6.1 kt
17.4	6.0 kt
18.5	6.0 kt
19.4	6.1 kt
20.5	6.2 kt
21.3	6.2 kt
22.4	6.0 kt
23.3	6.1 kt
24.4	6.2 kt
25.3	6.2 kt
26.4	6.3 kt
27.2	6.2 kt
28.4	6.2 kt
29.2	6.3 kt
30.3	6.3 kt
31.2	6.4 kt
32.3	6.3 kt
33.2	6.2 kt
35.1	6.2 kt
35.9	6.2 kt
37.0	6.2 kt
37.9	6.0 kt
39.0	6.1 kt
39.8	6.2 kt
41.0	6.4 kt
41.8	6.6 kt
42.9	6.7 kt
43.8	6.7 kt
44.9	6.6 kt
45.8	6.5 kt
46.9	6.0 kt
47.7	5.9 kt
48.9	6.1 kt
49.7	6.2 kt
50.9	6.3 kt
51.7	6.3 kt
52.8	6.2 kt
53.7	6.3 kt
54.8	6.4 kt
55.7	6.4 kt
56.8	6.4 kt
57.7	6.6 kt
58.8	6.7 kt
59.7	6.7 kt
61.1	6.5 kt
61.9	6.7 kt
63.0	7.0 kt
63.9	7.0 kt
65.0	6.6 kt
65.8	6.3 kt
66.9	6.2 kt
67.8	6.4 kt
68.9	6.7 kt
69.8	6.8 kt
70.8	7.1 kt
71.7	7.0 kt
72.9	6.9 kt
73.7	6.8 kt
74.9	6.8 kt
75.7	6.6 kt
76.9	6.7 kt
77.7	6.7 kt
78.8	6.8 kt
79.7	7.0 kt
80.8	6.9 kt
81.7	6.7 kt
82.8	6.6 kt
83.7	6.6 kt
84.8	6.5 kt
85.7	6.5 kt
86.8	6.3 kt
87.7	6.3 kt
88.8	6.4 kt
89.7	6.4 kt
90.9	6.4 kt
91.7	6.4 kt
92.8	6.5 kt
93.7	6.5 kt
94.8	6.4 kt
95.7	6.2 kt
96.8	6.1 kt
97.6	6.0 kt
98.7	6.1 kt
99.6	6.0 kt
100.7	5.9 kt
101.5	6.0 kt
102.6	6.0 kt
103.5	6.1 kt
104.6	6.2 kt
105.4	6.1 kt
106.6	6.0 kt
107.4	5.9 kt
108.6	5.8 kt
109.4	5.9 kt
110.6	6.0 kt
111.4	5.9 kt
112.5	5.8 kt
113.4	5.8 kt
114.6	5.9 kt
115.4	6.0 kt
117.1	6.4 kt
118.0	6.4 kt
119.1	6.3 kt
120.0	6.1 kt

Wind angle through turn

TWA °

T 0 sWIND ANGLE -7.1°

Recorded true wind angle (TWA), drawn as one continuous line. The readout shows the signed angle. The dotted line marks the turn at 0 seconds.

TWA through the selected tack
Seconds from turn (s)	TWA
-29.1	-42.5°
-28.2	-42.2°
-27.1	-42.5°
-26.2	-42.1°
-25.1	-42.1°
-24.2	-42.0°
-23.2	-42.6°
-22.3	-42.4°
-21.2	-41.3°
-20.3	-41.3°
-19.2	-39.9°
-18.3	-39.2°
-17.2	-38.5°
-16.3	-38.2°
-15.2	-38.6°
-14.3	-39.3°
-13.2	-39.2°
-12.3	-38.8°
-11.2	-39.1°
-10.3	-39.0°
-9.2	-39.3°
-8.4	-40.0°
-7.2	-40.9°
-6.4	-42.3°
-5.3	-42.2°
-4.4	-41.3°
-3.3	-37.3°
-2.5	-32.0°
-1.4	-19.9°
-0.5	-7.1°
0.7	9.3°
1.5	20.9°
2.6	36.6°
3.5	46.8°
4.6	56.5°
5.4	61.0°
6.6	62.4°
7.4	61.9°
8.5	64.1°
9.4	63.3°
10.5	61.6°
11.4	60.8°
12.5	60.1°
13.4	59.4°
14.5	60.2°
15.4	61.0°
16.5	61.0°
17.4	60.6°
18.5	60.1°
19.4	59.8°
20.5	57.9°
21.3	56.4°
22.4	55.1°
23.3	54.5°
24.4	53.9°
25.3	53.9°
26.4	54.3°
27.2	54.7°
28.4	55.1°
29.2	54.2°
30.3	51.4°
31.2	50.2°
32.3	49.7°
33.2	50.9°
35.1	51.2°
35.9	51.2°
37.0	52.3°
37.9	53.7°
39.0	54.0°
39.8	53.7°
41.0	55.0°
41.8	54.1°
42.9	55.1°
43.8	54.9°
44.9	54.7°
45.8	54.8°
46.9	54.9°
47.7	55.5°
48.9	57.1°
49.7	58.0°
50.9	58.8°
51.7	59.2°
52.8	60.0°
53.7	60.0°
54.8	60.3°
55.7	59.7°
56.8	61.8°
57.7	62.9°
58.8	64.9°
59.7	65.7°
61.1	65.6°
61.9	67.0°
63.0	68.2°
63.9	67.4°
65.0	67.1°
65.8	66.2°
66.9	65.7°
67.8	65.8°
68.9	67.6°
69.8	68.1°
70.8	67.8°
71.7	67.5°
72.9	66.4°
73.7	66.4°
74.9	65.4°
75.7	64.8°
76.9	63.2°
77.7	62.0°
78.8	61.0°
79.7	60.6°
80.8	59.0°
81.7	59.0°
82.8	57.7°
83.7	56.9°
84.8	56.7°
85.7	56.9°
86.8	57.4°
87.7	57.4°
88.8	56.9°
89.7	56.4°
90.9	56.1°
91.7	55.7°
92.8	55.2°
93.7	55.8°
94.8	55.5°
95.7	54.9°
96.8	54.6°
97.6	54.6°
98.7	55.2°
99.6	55.4°
100.7	55.1°
101.5	54.7°
102.6	54.5°
103.5	54.3°
104.6	54.7°
105.4	54.2°
106.6	54.0°
107.4	53.8°
108.6	54.6°
109.4	55.4°
110.6	55.7°
111.4	55.7°
112.5	56.4°
113.4	56.7°
114.6	56.9°
115.4	56.3°
117.1	54.6°
118.0	54.4°
119.1	54.5°
120.0	54.2°

Turn duration

83 tacks · count by s

BIN —TACKS —

Observed distribution; median 17 s.

Turn duration histogram
From (s)	To (s)	Tacks
4.8	22.8	49
22.8	40.9	14
40.9	59.0	11
59.0	77.1	4
77.1	95.2	2
95.2	113.3	2
113.3	131.4	0
131.4	149.5	1

Recovery

83 tacks · count by s

BIN —TACKS —

Observed distribution; median 16 s.

Recovery histogram
From (s)	To (s)	Tacks
7.6	20.0	54
20.0	32.4	16
32.4	44.8	4
44.8	57.2	3
57.2	69.6	3
69.6	82.0	1
82.0	94.4	1
94.4	106.8	1

Acceleration

83 tacks · count by s

BIN —TACKS —

Observed distribution; median 12.7 s.

Acceleration histogram
From (s)	To (s)	Tacks
4.8	17.1	54
17.1	29.3	16
29.3	41.6	4
41.6	53.9	4
53.9	66.1	3
66.1	78.4	1
78.4	90.6	0
90.6	102.9	1

Recovery by session

median seconds · analyzed tacks

SESSION —MEDIAN —N —

1. 2021-06-05: 16 s (n=28) · 2. 2021-06-06: 23.2 s (n=13) · 3. 2021-06-13: 16.4 s (n=3) · 4. Verve · Aug 13–15, 2021: 16.4 s (n=29) · 5. Sheldon Clark · Sep 18, 2021: 14.7 s (n=9) · 6. Sep 18, 2022: 15.1 s (n=1) Select a session to filter every chart.

Median recovery by session
Session	Median recovery (s)	Analyzed tacks
1. 2021-06-05	16.0	28
2. 2021-06-06	23.2	13
3. 2021-06-13	16.4	3
4. Verve · Aug 13–15, 2021	16.4	29
5. Sheldon Clark · Sep 18, 2021	14.7	9
6. Sep 18, 2022	15.1	1

Entry speed versus recovery

83 analyzed tacks · BSP kt / recovery s

TURN —ENTRY —RECOVERY —

Each point is one analyzed tack; select one to show it above. Recovery is the time taken to regain most of the speed the boat had on entry.

Entry boat speed and recovery time per turn
Turn	Entry BSP (kt)	Recovery (s)
16:06:46 UTC	6.1	14.5
16:08:52 UTC	6.0	10.7
16:11:14 UTC	6.1	14.1
17:04:16 UTC	6.4	8.9
17:07:26 UTC	6.7	46.6
17:11:02 UTC	6.1	11.1
17:32:41 UTC	6.4	16.0
17:35:47 UTC	6.1	25.2
17:42:22 UTC	6.3	10.8
18:34:26 UTC	6.1	10.5
18:38:41 UTC	6.2	23.6
18:41:29 UTC	6.5	25.0
18:59:33 UTC	6.4	18.3
19:01:58 UTC	6.3	17.0
19:04:12 UTC	6.2	7.6
19:08:19 UTC	6.3	15.7
19:31:44 UTC	6.3	22.8
19:51:11 UTC	5.0	12.0
19:56:12 UTC	6.2	13.8
19:58:34 UTC	6.2	21.6
20:00:02 UTC	6.2	25.1
20:07:14 UTC	6.3	18.9
20:08:09 UTC	6.2	10.7
20:10:29 UTC	6.1	54.1
20:14:41 UTC	6.7	51.4
20:30:59 UTC	5.9	16.0
20:34:53 UTC	6.4	38.1
20:38:11 UTC	6.2	14.9
15:24:54 UTC	5.1	23.2
15:37:55 UTC	5.1	23.7
15:44:17 UTC	4.9	9.3
15:45:32 UTC	5.2	66.6
16:28:37 UTC	5.3	14.3
17:02:01 UTC	4.9	14.9
17:05:26 UTC	5.5	57.7
17:56:02 UTC	4.9	8.6
18:03:06 UTC	5.7	106.8
18:09:28 UTC	5.3	11.7
18:10:24 UTC	5.5	37.0
18:30:40 UTC	4.4	30.1
18:32:40 UTC	5.5	10.8
15:17:06 UTC	5.6	9.8
15:22:09 UTC	5.6	22.0
16:57:26 UTC	3.9	16.4
16:05:22 UTC	5.3	21.7
16:43:19 UTC	6.0	16.3
16:44:44 UTC	6.3	24.4
17:48:13 UTC	5.9	8.7
18:10:02 UTC	5.9	17.6
18:16:58 UTC	5.7	9.2
19:30:36 UTC	5.7	11.8
19:42:57 UTC	6.3	24.5
20:03:55 UTC	5.6	15.2
20:05:56 UTC	4.4	9.8
20:14:31 UTC	6.1	13.9
15:39:18 UTC	6.3	15.9
15:59:17 UTC	5.3	87.3
16:09:20 UTC	5.9	19.3
16:13:01 UTC	5.1	8.0
16:19:03 UTC	5.8	16.7
16:21:14 UTC	4.8	11.5
16:40:15 UTC	4.6	7.7
16:47:35 UTC	5.7	38.9
17:55:10 UTC	5.3	24.0
18:01:35 UTC	5.1	16.4
18:26:06 UTC	5.4	64.5
19:24:32 UTC	5.3	11.3
19:30:30 UTC	5.9	23.2
19:34:14 UTC	5.3	9.3
19:53:42 UTC	4.9	17.4
20:02:08 UTC	5.2	33.2
15:38:48 UTC	5.6	9.6
16:13:21 UTC	4.8	72.5
15:51:56 UTC	5.2	13.5
15:54:11 UTC	4.9	14.7
16:17:22 UTC	5.7	12.3
16:44:33 UTC	5.9	17.2
18:50:37 UTC	6.1	29.4
19:56:39 UTC	5.6	12.9
19:59:31 UTC	5.9	15.1
20:04:34 UTC	5.9	14.3
20:21:10 UTC	6.1	17.3
19:15:17 UTC	5.0	15.1

Distance lost through the turn

Rank	Session / turn	Entry / low BSP	Turn / acceleration	Loss	Recovery	Status / reason
1	Verve · Aug 13–15, 2021 · 8/14/2021	5.3 kt / 1.6 kt	110.4 s / 57.5 s	44.4 m	87.3 s	Analyzed
2	Verve · Aug 13–15, 2021 · 8/13/2021	5.3 kt / 2 kt	149.5 s / 17.6 s	34.4 m	21.7 s	Analyzed
3	2021-06-06 · 6/6/2021	5.5 kt / 3.7 kt	16.4 s / 30.8 s	23 m	37 s	Analyzed
4	2021-06-06 · 6/6/2021	5.5 kt / 3.4 kt	52.5 s / 51.5 s	21.4 m	57.7 s	Analyzed
5	Verve · Aug 13–15, 2021 · 8/14/2021	5.4 kt / 3.4 kt	78.6 s / 62.8 s	20.6 m	64.5 s	Analyzed
6	2021-06-05 · 6/5/2021	6.3 kt / 3.5 kt	82.9 s / 17.9 s	20.2 m	22.8 s	Analyzed
7	2021-06-05 · 6/5/2021	6.2 kt / 4.2 kt	16.8 s / 21.9 s	19.2 m	25.1 s	Analyzed
8	Verve · Aug 13–15, 2021 · 8/13/2021	6.3 kt / 4 kt	4.9 s / 22.6 s	17.6 m	24.4 s	Analyzed
9	2021-06-06 · 6/6/2021	4.4 kt / 3 kt	30.7 s / 29.8 s	16.6 m	30.1 s	Analyzed
10	Verve · Aug 13–15, 2021 · 8/13/2021	6.3 kt / 4 kt	6.1 s / 23.5 s	16.3 m	24.5 s	Analyzed
11	2021-06-06 · 6/6/2021	5.7 kt / 3.9 kt	5.9 s / 102.9 s	15 m	106.8 s	Analyzed
12	Sheldon Clark · Sep 18, 2021 · 9/18/2021	4.9 kt / 2.9 kt	24 s / 13 s	15 m	14.7 s	Analyzed
—	Verve · Aug 13–15, 2021 · 8/13/2021	6.4 kt / 1.2 kt	— / —	60.1 m	—	Not analyzed: no steady course before the turn was recorded; the recording has gaps around this turn
—	Verve · Aug 13–15, 2021 · 8/13/2021	5.9 kt / 1.8 kt	— / 44.3 s	52.9 m	73.1 s	Not analyzed: no steady course before the turn was recorded
—	Sheldon Clark · Sep 18, 2021 · 9/18/2021	6 kt / 2.7 kt	— / 37.7 s	52 m	51.5 s	Not analyzed: no steady course before the turn was recorded
—	Sheldon Clark · Sep 18, 2021 · 9/18/2021	7 kt / 3.4 kt	— / 38.5 s	49.1 m	40.2 s	Not analyzed: no steady course before the turn was recorded; the recording has gaps around this turn

Each basis compares the distance sailed through the turn with a reference distance. Each value uses the measurements available for that turn; missing values say why they are missing.

Recorded sailing

Course and track

Track segment

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Observation coverage

Recording coverage

10recordings

6sailing sessions

59course patterns

11complete patterns

Each row is one day of recorded sailing. Course patterns include incomplete ones, so they are not an official race count.
Observed date	Samples	Course patterns	Complete patterns
2021-06-05	23,675	15	0
2021-06-06	21,678	10	1
2021-06-13	14,201	7	0
2021-08-13	62,709	19	6
2021-09-18	22,370	7	4
2022-09-18	10,920	1	0

Repeated records count once.

Sources

YachtScoring event metadata First championship race Last championship race Championship standings