Instrument performance · TP52 Super Series

TP52 performance analysis

Cascais, Portugal · September 2015 · eight TP52 sessions.

Event or session · 8 sessions

All sessions · 32 analyzed tacks · 64 unavailable

Instrument performance

Speed through the turn

Type Turn

32 analyzed tacks64 not analyzed5.2 s median turn duration22.9 s median recovery

Aligned tack speed

32 turns · BSP kt · median and middle half

T 0 sMEDIAN 7.9 ktMIDDLE HALF 7.3 kt–8.3 ktN 32

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	8.4 kt	7.8 kt	8.5 kt	25
-28	8.3 kt	7.8 kt	8.6 kt	31
-27	8.4 kt	7.8 kt	8.6 kt	32
-26	8.4 kt	7.8 kt	8.6 kt	32
-25	8.4 kt	7.8 kt	8.5 kt	32
-24	8.4 kt	7.8 kt	8.6 kt	32
-23	8.4 kt	7.9 kt	8.7 kt	32
-22	8.3 kt	7.8 kt	8.7 kt	32
-21	8.2 kt	7.8 kt	8.6 kt	32
-20	8.2 kt	7.6 kt	8.7 kt	32
-19	8.2 kt	7.6 kt	8.7 kt	32
-18	8.3 kt	7.6 kt	8.9 kt	32
-17	8.3 kt	7.7 kt	8.9 kt	32
-16	8.4 kt	7.7 kt	8.8 kt	32
-15	8.4 kt	7.7 kt	8.9 kt	32
-14	8.4 kt	7.7 kt	8.8 kt	32
-13	8.4 kt	8.0 kt	8.8 kt	32
-12	8.5 kt	8.0 kt	8.8 kt	32
-11	8.4 kt	8.0 kt	8.7 kt	32
-10	8.4 kt	7.9 kt	8.7 kt	32
-9	8.4 kt	7.9 kt	8.9 kt	32
-8	8.4 kt	7.9 kt	8.9 kt	32
-7	8.3 kt	7.9 kt	8.8 kt	32
-6	8.3 kt	7.9 kt	8.8 kt	32
-5	8.3 kt	7.9 kt	8.7 kt	32
-4	8.3 kt	7.9 kt	8.8 kt	32
-3	8.3 kt	7.9 kt	8.7 kt	32
-2	8.3 kt	7.9 kt	8.7 kt	32
-1	8.2 kt	7.8 kt	8.6 kt	32
0	7.9 kt	7.3 kt	8.3 kt	32
1	7.4 kt	6.9 kt	7.9 kt	32
2	7.0 kt	6.5 kt	7.6 kt	32
3	6.6 kt	6.2 kt	7.3 kt	32
4	6.4 kt	6.0 kt	7.0 kt	32
5	6.3 kt	5.8 kt	6.8 kt	32
6	6.3 kt	5.8 kt	6.8 kt	32
7	6.3 kt	5.7 kt	6.7 kt	32
8	6.4 kt	5.8 kt	6.8 kt	32
9	6.4 kt	5.8 kt	6.8 kt	32
10	6.5 kt	5.9 kt	7.0 kt	32
11	6.7 kt	5.9 kt	7.1 kt	32
12	6.8 kt	6.0 kt	7.3 kt	32
13	7.0 kt	6.1 kt	7.5 kt	32
14	7.2 kt	6.3 kt	7.6 kt	32
15	7.3 kt	6.5 kt	7.6 kt	32
16	7.4 kt	6.7 kt	7.8 kt	32
17	7.5 kt	6.8 kt	7.9 kt	32
18	7.6 kt	6.9 kt	8.0 kt	32
19	7.7 kt	7.0 kt	8.0 kt	32
20	7.8 kt	7.1 kt	8.0 kt	32
21	7.8 kt	7.2 kt	8.1 kt	32
22	7.9 kt	7.3 kt	8.3 kt	32
23	8.1 kt	7.5 kt	8.4 kt	32
24	8.2 kt	7.5 kt	8.5 kt	32
25	8.2 kt	7.6 kt	8.6 kt	32
26	8.2 kt	7.6 kt	8.6 kt	32
27	8.3 kt	7.7 kt	8.6 kt	32
28	8.3 kt	7.7 kt	8.6 kt	32
29	8.3 kt	7.7 kt	8.6 kt	32
30	8.3 kt	7.7 kt	8.6 kt	32
31	8.3 kt	7.7 kt	8.6 kt	32
32	8.4 kt	7.8 kt	8.6 kt	32
33	8.5 kt	7.8 kt	8.8 kt	32
34	8.5 kt	7.9 kt	8.9 kt	32
35	8.5 kt	7.9 kt	8.9 kt	32
36	8.5 kt	7.8 kt	8.9 kt	32
37	8.5 kt	7.8 kt	8.9 kt	32
38	8.5 kt	7.8 kt	8.9 kt	31
39	8.5 kt	7.8 kt	8.8 kt	31
40	8.5 kt	7.9 kt	8.7 kt	31
41	8.5 kt	7.8 kt	8.7 kt	31
42	8.4 kt	7.9 kt	8.8 kt	31
43	8.4 kt	7.9 kt	8.7 kt	31
44	8.4 kt	8.0 kt	8.8 kt	31
45	8.4 kt	8.1 kt	8.9 kt	31
46	8.5 kt	8.1 kt	9.0 kt	31
47	8.5 kt	8.0 kt	9.0 kt	31
48	8.6 kt	8.0 kt	9.0 kt	31
49	8.5 kt	8.0 kt	9.0 kt	31
50	8.5 kt	8.1 kt	8.9 kt	31
51	8.6 kt	8.1 kt	9.0 kt	30
52	8.6 kt	8.1 kt	9.0 kt	30
53	8.6 kt	8.1 kt	9.0 kt	30
54	8.7 kt	8.1 kt	8.9 kt	30
55	8.7 kt	8.1 kt	9.1 kt	30
56	8.7 kt	8.1 kt	8.9 kt	29
57	8.7 kt	8.0 kt	9.0 kt	29
58	8.7 kt	8.0 kt	9.0 kt	29
59	8.6 kt	8.0 kt	9.0 kt	29
60	8.7 kt	8.1 kt	9.1 kt	29
61	8.8 kt	8.1 kt	9.2 kt	29
62	8.8 kt	8.3 kt	9.2 kt	29
63	8.8 kt	8.3 kt	9.1 kt	29
64	8.8 kt	8.2 kt	9.1 kt	28
65	8.8 kt	8.2 kt	9.1 kt	28
66	8.8 kt	8.1 kt	9.0 kt	28
67	8.7 kt	8.1 kt	9.0 kt	28
68	8.7 kt	8.1 kt	9.0 kt	28
69	8.7 kt	8.2 kt	9.1 kt	27
70	8.6 kt	8.1 kt	9.0 kt	27
71	8.6 kt	8.1 kt	8.9 kt	27
72	8.6 kt	8.0 kt	9.0 kt	27
73	8.7 kt	8.1 kt	9.1 kt	27
74	8.7 kt	8.1 kt	9.0 kt	27
75	8.7 kt	8.1 kt	9.0 kt	27
76	8.7 kt	8.1 kt	9.0 kt	27
77	8.6 kt	8.1 kt	9.0 kt	27
78	8.6 kt	8.1 kt	9.0 kt	26
79	8.5 kt	8.1 kt	8.9 kt	26
80	8.5 kt	8.0 kt	8.9 kt	26
81	8.5 kt	8.0 kt	8.9 kt	26
82	8.5 kt	8.0 kt	8.9 kt	26
83	8.4 kt	8.0 kt	8.9 kt	25
84	8.4 kt	8.0 kt	8.9 kt	25
85	8.5 kt	8.0 kt	8.9 kt	25
86	8.5 kt	8.1 kt	8.8 kt	25
87	8.6 kt	8.1 kt	8.8 kt	25
88	8.6 kt	8.1 kt	8.8 kt	25
89	8.6 kt	8.1 kt	8.9 kt	25
90	8.5 kt	8.1 kt	8.9 kt	25
91	8.5 kt	8.0 kt	9.0 kt	25
92	8.5 kt	8.0 kt	9.0 kt	25
93	8.5 kt	8.1 kt	9.1 kt	25
94	8.5 kt	8.0 kt	9.1 kt	25
95	8.5 kt	7.9 kt	9.1 kt	25
96	8.5 kt	7.9 kt	9.1 kt	25
97	8.4 kt	7.9 kt	9.1 kt	25
98	8.4 kt	7.9 kt	9.1 kt	25
99	8.4 kt	7.9 kt	9.1 kt	25
100	8.4 kt	8.0 kt	9.1 kt	25
101	8.4 kt	8.1 kt	9.1 kt	25
102	8.4 kt	8.1 kt	9.0 kt	25
103	8.4 kt	8.1 kt	9.0 kt	25
104	8.4 kt	8.1 kt	9.0 kt	25
105	8.4 kt	8.0 kt	9.0 kt	25
106	8.4 kt	7.9 kt	8.9 kt	25
107	8.4 kt	7.8 kt	8.9 kt	25
108	8.4 kt	7.8 kt	9.1 kt	25
109	8.4 kt	7.9 kt	9.1 kt	25
110	8.5 kt	7.8 kt	9.0 kt	24
111	8.5 kt	7.8 kt	9.0 kt	24
112	8.5 kt	7.8 kt	8.9 kt	24
113	8.5 kt	7.8 kt	8.9 kt	24
114	8.5 kt	7.8 kt	8.9 kt	24
115	8.5 kt	7.8 kt	8.9 kt	24
116	8.5 kt	7.8 kt	8.9 kt	24
117	8.4 kt	7.8 kt	8.9 kt	24
118	8.5 kt	7.7 kt	8.9 kt	24
119	8.6 kt	8.0 kt	8.9 kt	20

Selected tack

T 0 sSPEED 3.6 kt

Entry 4.4 kt · low 3.1 kt

BSP through the selected tack
Seconds from turn (s)	BSP
-29.6	5.3 kt
-28.6	5.3 kt
-27.5	5.3 kt
-26.6	5.2 kt
-25.6	5.2 kt
-24.6	5.2 kt
-23.6	5.1 kt
-22.6	5.0 kt
-21.6	4.9 kt
-20.5	4.8 kt
-19.6	4.7 kt
-18.6	4.6 kt
-17.6	4.5 kt
-16.6	4.4 kt
-15.6	4.4 kt
-14.6	4.4 kt
-13.5	4.4 kt
-12.6	4.4 kt
-11.6	4.3 kt
-10.6	4.3 kt
-9.6	4.3 kt
-8.5	4.3 kt
-7.6	4.3 kt
-6.5	4.3 kt
-5.6	4.3 kt
-4.6	4.3 kt
-3.6	4.3 kt
-2.6	4.3 kt
-1.5	4.1 kt
-0.6	3.9 kt
0.4	3.6 kt
1.4	3.3 kt
2.4	3.1 kt
3.4	3.1 kt
4.4	3.1 kt
5.5	3.1 kt
6.4	3.1 kt
7.4	3.1 kt
8.4	3.1 kt
9.4	3.1 kt
10.4	3.2 kt
11.4	3.2 kt
12.5	3.2 kt
13.4	3.2 kt
14.4	3.2 kt
15.4	3.2 kt
16.4	3.1 kt
17.4	3.1 kt
18.4	3.2 kt
19.5	3.2 kt
21.4	3.2 kt
22.4	3.3 kt
24.4	3.3 kt
25.4	3.4 kt
26.5	3.6 kt
27.4	3.8 kt
28.4	3.9 kt
29.4	4.1 kt
30.4	4.3 kt
31.4	4.6 kt
32.4	4.8 kt
33.5	5.1 kt
34.4	5.8 kt
35.4	6.0 kt
36.4	6.4 kt
37.4	6.8 kt
38.4	7.5 kt
39.4	7.7 kt
40.5	7.9 kt
41.4	7.9 kt
42.4	8.0 kt
43.4	8.1 kt
44.4	8.1 kt
45.4	8.2 kt
46.4	8.3 kt
47.5	8.4 kt
48.4	8.4 kt
49.4	8.5 kt
50.4	8.5 kt
51.4	9.0 kt
52.5	9.1 kt
53.4	9.2 kt
54.4	9.3 kt
55.4	9.4 kt
56.4	9.4 kt
57.4	9.4 kt
58.4	9.4 kt
59.5	9.4 kt
60.4	9.4 kt
61.4	9.4 kt
62.4	9.4 kt
63.4	9.4 kt

Wind angle through turn

TWA °

T 0 sWIND ANGLE 3.9°

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
-29.6	-55.5°
-28.6	-56.1°
-27.5	-56.1°
-26.6	-56.8°
-25.6	-51.0°
-24.6	-45.0°
-23.6	-40.9°
-22.6	-38.7°
-21.6	-38.7°
-20.5	-39.9°
-19.6	-42.5°
-18.6	-50.2°
-17.6	-52.9°
-16.6	-53.3°
-15.6	-53.4°
-14.6	-52.5°
-13.5	-52.0°
-12.6	-51.1°
-11.6	-51.0°
-10.6	-51.4°
-9.6	-51.4°
-8.5	-51.9°
-7.6	-52.5°
-6.5	-51.7°
-5.6	-49.2°
-4.6	-45.6°
-3.6	-36.2°
-2.6	-23.5°
-1.5	-13.8°
-0.6	-5.1°
0.4	3.9°
1.4	14.9°
2.4	23.6°
3.4	29.6°
4.4	33.6°
5.5	35.9°
6.4	37.3°
7.4	38.1°
8.4	38.0°
9.4	37.3°
10.4	36.7°
11.4	37.3°
12.5	36.5°
13.4	36.8°
14.4	36.6°
15.4	37.6°
16.4	40.4°
17.4	45.1°
18.4	50.6°
19.5	53.4°
21.4	55.3°
22.4	56.9°
24.4	58.8°
25.4	62.1°
26.5	66.3°
27.4	69.5°
28.4	71.0°
29.4	72.0°
30.4	76.4°
31.4	84.9°
32.4	89.9°
33.5	93.9°
34.4	100.8°
35.4	103.5°
36.4	109.3°
37.4	112.2°
38.4	112.4°
39.4	113.4°
40.5	114.1°
41.4	114.7°
42.4	116.3°
43.4	117.3°
44.4	118.7°
45.4	120.4°
46.4	121.6°
47.5	122.2°
48.4	123.8°
49.4	126.6°
50.4	128.8°
51.4	131.9°
52.5	133.9°
53.4	134.2°
54.4	134.6°
55.4	137.6°
56.4	139.1°
57.4	139.2°
58.4	139.1°
59.5	138.8°
60.4	137.0°
61.4	129.2°
62.4	121.4°
63.4	102.2°

Turn duration

32 tacks · count by s

BIN —TACKS —

Observed distribution; median 5.2 s.

Turn duration histogram
From (s)	To (s)	Tacks
3.5	13.9	24
13.9	24.4	4
24.4	34.9	2
34.9	45.4	0
45.4	55.8	1
55.8	66.3	0
66.3	76.8	0
76.8	87.3	1

Recovery

32 tacks · count by s

BIN —TACKS —

Observed distribution; median 22.9 s.

Recovery histogram
From (s)	To (s)	Tacks
12.2	18.2	6
18.2	24.2	15
24.2	30.3	4
30.3	36.3	4
36.3	42.3	1
42.3	48.4	1
48.4	54.4	0
54.4	60.4	1

Acceleration

32 tacks · count by s

BIN —TACKS —

Observed distribution; median 17.3 s.

Acceleration histogram
From (s)	To (s)	Tacks
3.5	9.5	2
9.5	15.6	11
15.6	21.6	11
21.6	27.6	5
27.6	33.7	1
33.7	39.7	1
39.7	45.8	0
45.8	51.8	1

Recovery by session

median seconds · analyzed tacks

SESSION —MEDIAN —N —

2. Sep 14, 2015: 30.4 s (n=1) · 3. Sep 15, 2015: 22.6 s (n=6) · 4. Sep 16, 2015: 20.3 s (n=12) · 5. Sep 17, 2015: 23.2 s (n=12) · 7. Sep 19, 2015: 60.4 s (n=1) Select a session to filter every chart.

Median recovery by session
Session	Median recovery (s)	Analyzed tacks
2. Sep 14, 2015	30.4	1
3. Sep 15, 2015	22.6	6
4. Sep 16, 2015	20.3	12
5. Sep 17, 2015	23.2	12
7. Sep 19, 2015	60.4	1

Entry speed versus recovery

32 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)
14:27:17 UTC	4.4	30.4
09:48:37 UTC	8.4	20.7
09:56:06 UTC	9.0	24.8
11:28:57 UTC	8.9	18.1
11:32:49 UTC	9.0	20.8
11:36:10 UTC	9.1	45.7
11:48:41 UTC	8.9	24.4
10:48:42 UTC	7.3	14.8
10:55:19 UTC	9.0	23.1
10:58:36 UTC	8.7	29.2
11:53:56 UTC	7.7	18.7
12:04:44 UTC	7.1	16.1
12:13:45 UTC	8.5	40.5
12:39:36 UTC	8.1	20.3
12:46:47 UTC	8.1	18.7
13:15:39 UTC	5.7	20.3
14:18:23 UTC	9.8	17.4
14:34:33 UTC	8.5	21.6
15:00:59 UTC	7.6	22.9
10:40:57 UTC	7.9	36.2
12:30:02 UTC	8.6	23.4
12:40:15 UTC	8.7	22.9
13:14:11 UTC	8.0	26.4
13:15:20 UTC	7.9	24.1
14:09:29 UTC	8.1	33.5
14:47:06 UTC	8.1	15.2
14:56:07 UTC	9.1	32.6
15:03:20 UTC	8.5	21.9
15:05:44 UTC	7.5	12.2
15:19:32 UTC	8.5	23.1
15:20:23 UTC	8.6	18.8
10:39:20 UTC	7.5	60.4

Distance lost through the turn

Rank	Session / turn	Entry / low BSP	Turn / acceleration	Loss	Recovery	Status / reason
1	Sep 15, 2015 · 9/15/2015	9.1 kt / 5.6 kt	19 s / 38 s	42.4 m	45.7 s	Analyzed
2	Sep 16, 2015 · 9/16/2015	9.8 kt / 5.5 kt	27.6 s / 12.1 s	32.3 m	17.4 s	Analyzed
3	Sep 17, 2015 · 9/17/2015	8.1 kt / 5.3 kt	87.3 s / 26.8 s	25.7 m	33.5 s	Analyzed
4	Sep 15, 2015 · 9/15/2015	9 kt / 6.6 kt	3.5 s / 18.1 s	22.2 m	24.8 s	Analyzed
5	Sep 19, 2015 · 9/19/2015	7.5 kt / 5.7 kt	28.5 s / 51.8 s	20.4 m	60.4 s	Analyzed
6	Sep 17, 2015 · 9/17/2015	7.9 kt / 6.3 kt	5.2 s / 20.7 s	19.2 m	36.2 s	Analyzed
7	Sep 17, 2015 · 9/17/2015	7.9 kt / 5.9 kt	6 s / 14.7 s	19.2 m	24.1 s	Analyzed
8	Sep 14, 2015 · 9/14/2015	4.4 kt / 3.1 kt	22 s / 26 s	18.8 m	30.4 s	Analyzed
9	Sep 17, 2015 · 9/17/2015	8.6 kt / 6.5 kt	4.3 s / 17.3 s	18 m	23.4 s	Analyzed
10	Sep 16, 2015 · 9/16/2015	8.7 kt / 6.7 kt	5.2 s / 21.6 s	17.5 m	29.2 s	Analyzed
11	Sep 15, 2015 · 9/15/2015	8.9 kt / 6.8 kt	3.5 s / 18.1 s	17.3 m	24.4 s	Analyzed
12	Sep 17, 2015 · 9/17/2015	8 kt / 6.2 kt	5.2 s / 22.5 s	16.9 m	26.4 s	Analyzed
—	Sep 14, 2015 · 9/14/2015	11.1 kt / 5.2 kt	— / —	75.9 m	—	Not analyzed: no steady course before the turn was recorded; the recording has gaps around this turn
—	Sep 13, 2015 · 9/13/2015	9.6 kt / 4.1 kt	5 s / —	71.6 m	—	Not analyzed: the recording has gaps around this turn
—	Sep 15, 2015 · 9/15/2015	10.1 kt / 5.6 kt	— / 97.6 s	67.8 m	105 s	Not analyzed: no steady course before the turn was recorded
—	Sep 19, 2015 · 9/19/2015	10 kt / 5.2 kt	— / 97.6 s	67.7 m	103.5 s	Not analyzed: no steady course before the turn was recorded

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.

Session comparisons

Maneuvers and speed polar

1. Sep 13, 2015 · 2. Sep 14, 2015 · 3. Sep 15, 2015 · 4. Sep 16, 2015 · 5. Sep 17, 2015 · 6. Sep 18, 2015 · 7. Sep 19, 2015 · 8. Sep 20, 2015

BSP entry

kt · median and middle half

SESSION —

n shows turns with measurements out of all turns; the not-analyzed count is in the table.

BSP entry by session
Session	Median	Lower quartile	Upper quartile	Analyzed / turns	Not analyzed
1. Sep 13, 2015	9.4 kt	9.3 kt	9.5 kt	4 / 4	4
2. Sep 14, 2015	9.6 kt	8.7 kt	10.1 kt	9 / 9	8
3. Sep 15, 2015	9 kt	8.9 kt	9.5 kt	13 / 16	10
4. Sep 16, 2015	8 kt	7.6 kt	8.5 kt	24 / 26	14
5. Sep 17, 2015	8.3 kt	8 kt	8.6 kt	19 / 21	9
6. Sep 18, 2015	7.9 kt	7.9 kt	7.9 kt	1 / 1	1
7. Sep 19, 2015	9.2 kt	8 kt	10.4 kt	8 / 9	8
8. Sep 20, 2015	9.1 kt	8 kt	9.7 kt	8 / 10	10

TWA turn duration

s · median and middle half

SESSION —

n shows turns with measurements out of all turns; the not-analyzed count is in the table.

TWA turn duration by session
Session	Median	Lower quartile	Upper quartile	Analyzed / turns	Not analyzed
1. Sep 13, 2015	5 s	5 s	5 s	2 / 4	4
2. Sep 14, 2015	22 s	22 s	22 s	1 / 9	8
3. Sep 15, 2015	5.2 s	4.3 s	6 s	7 / 16	10
4. Sep 16, 2015	5.2 s	5.2 s	15.6 s	13 / 26	14
5. Sep 17, 2015	5.2 s	5.2 s	5.2 s	13 / 21	9
6. Sep 18, 2015	—	—	—	0 / 1	1
7. Sep 19, 2015	28.5 s	28.5 s	28.5 s	1 / 9	8
8. Sep 20, 2015	—	—	—	0 / 10	10

Speed recovery

s · median and middle half

SESSION —

n shows turns with measurements out of all turns; the not-analyzed count is in the table.

Speed recovery by session
Session	Median	Lower quartile	Upper quartile	Analyzed / turns	Not analyzed
1. Sep 13, 2015	38.3 s	36.2 s	40.3 s	2 / 4	4
2. Sep 14, 2015	17.8 s	15.4 s	19.9 s	6 / 9	8
3. Sep 15, 2015	20.8 s	16.3 s	25.1 s	12 / 16	10
4. Sep 16, 2015	21.6 s	17.4 s	24 s	21 / 26	14
5. Sep 17, 2015	23.7 s	19.6 s	33.3 s	18 / 21	9
6. Sep 18, 2015	15.9 s	15.9 s	15.9 s	1 / 1	1
7. Sep 19, 2015	29 s	21 s	59.2 s	7 / 9	8
8. Sep 20, 2015	45.5 s	40.7 s	54.5 s	6 / 10	10

Loss

m · median and middle half

SESSION —

n shows turns with measurements out of all turns; the not-analyzed count is in the table.

Loss by session
Session	Median	Lower quartile	Upper quartile	Analyzed / turns	Not analyzed
1. Sep 13, 2015	52.5 m	47.8 m	58 m	4 / 4	4
2. Sep 14, 2015	27.6 m	21 m	41.3 m	8 / 9	8
3. Sep 15, 2015	26.2 m	19.7 m	37.3 m	11 / 16	10
4. Sep 16, 2015	17.5 m	12.7 m	31.8 m	19 / 26	14
5. Sep 17, 2015	16.9 m	13 m	22.5 m	15 / 21	9
6. Sep 18, 2015	23.5 m	23.5 m	23.5 m	1 / 1	1
7. Sep 19, 2015	36 m	28.2 m	51.8 m	3 / 9	8
8. Sep 20, 2015	40.1 m	17.9 m	52.5 m	8 / 10	10

Wind conditions differ between sessions.

Speed polar

Angle: absolute TWA · radius: BSP in knots

True wind speed

POINT —

9–12 kt is highlighted. Lighter lines show other wind bands. Whiskers show the middle half of the readings.

Measured boat speed by absolute wind angle and true wind speed
TWS	TWA	Median BSP (kt)	Lower quartile (kt)	Upper quartile (kt)	Samples
0–6 kt	0–30°	2.6	2.3	4.2	946
0–6 kt	30–40°	4.9	2.5	5.7	589
0–6 kt	40–50°	4.7	2.4	5.8	606
0–6 kt	50–60°	5.5	2.6	6.1	367
0–6 kt	60–75°	4.4	2.6	6.2	397
0–6 kt	75–90°	3.7	2.7	4.4	135
0–6 kt	90–105°	3.5	2.7	4.5	74
0–6 kt	105–120°	4.4	2.9	4.8	74
0–6 kt	120–140°	3.4	3.0	3.9	155
0–6 kt	140–160°	3.2	2.7	3.9	316
0–6 kt	160–180°	2.6	2.5	4.1	758
6–9 kt	0–30°	3.5	2.5	5.7	2377
6–9 kt	30–40°	6.6	4.9	7.5	2507
6–9 kt	40–50°	5.7	4.5	6.8	1286
6–9 kt	50–60°	5.7	4.4	7.2	1018
6–9 kt	60–75°	5.9	4.8	7.0	1597
6–9 kt	75–90°	6.1	5.4	7.4	1283
6–9 kt	90–105°	6.2	4.3	7.6	845
6–9 kt	105–120°	5.5	3.9	6.6	1026
6–9 kt	120–140°	6.1	4.6	7.9	2413
6–9 kt	140–160°	4.4	3.1	6.0	1472
6–9 kt	160–180°	3.5	2.7	5.1	938
9–12 kt	0–30°	6.8	3.5	8.3	4447
9–12 kt	30–40°	8.0	6.9	8.5	3196
9–12 kt	40–50°	7.8	5.9	8.2	3330
9–12 kt	50–60°	7.2	5.7	8.3	2149
9–12 kt	60–75°	7.6	5.5	9.2	1780
9–12 kt	75–90°	8.8	6.7	9.5	2216
9–12 kt	90–105°	8.6	7.6	9.5	2311
9–12 kt	105–120°	8.2	7.2	9.0	2220
9–12 kt	120–140°	9.2	7.6	10.0	6516
9–12 kt	140–160°	9.2	6.8	10.1	7202
9–12 kt	160–180°	5.0	3.8	7.8	1260
12–15 kt	0–30°	8.2	6.3	8.6	3494
12–15 kt	30–40°	8.3	7.8	8.7	5588
12–15 kt	40–50°	8.3	7.8	8.7	5845
12–15 kt	50–60°	8.0	6.2	8.5	1755
12–15 kt	60–75°	7.0	6.0	8.5	2216
12–15 kt	75–90°	7.7	6.8	9.6	2056
12–15 kt	90–105°	9.2	7.5	10.2	1637
12–15 kt	105–120°	9.2	8.0	9.8	1279
12–15 kt	120–140°	10.1	9.2	11.2	3182
12–15 kt	140–160°	10.6	8.7	11.5	5902
12–15 kt	160–180°	8.1	4.0	9.6	541
15–18 kt	0–30°	8.8	6.9	9.0	2167
15–18 kt	30–40°	8.8	8.3	9.0	3878
15–18 kt	40–50°	8.8	8.1	9.0	3441
15–18 kt	50–60°	8.1	6.2	9.1	671
15–18 kt	60–75°	8.4	7.4	9.3	1540
15–18 kt	75–90°	9.4	8.5	10.1	1159
15–18 kt	90–105°	10.5	9.9	11.1	922
15–18 kt	105–120°	10.5	9.9	11.0	746
15–18 kt	120–140°	11.2	10.1	13.0	1633
15–18 kt	140–160°	12.6	10.4	13.7	3679
15–18 kt	160–180°	9.4	8.9	11.1	292
18–24 kt	0–30°	9.0	8.8	9.1	1707
18–24 kt	30–40°	8.2	6.5	8.8	743
18–24 kt	40–50°	8.9	8.6	9.0	1592
18–24 kt	50–60°	7.9	6.3	9.1	395
18–24 kt	60–75°	8.2	6.9	8.9	536
18–24 kt	75–90°	8.9	8.0	9.6	274
18–24 kt	90–105°	10.0	9.5	10.9	408
18–24 kt	105–120°	10.6	9.9	11.8	489
18–24 kt	120–140°	13.4	11.1	15.9	476
18–24 kt	140–160°	14.9	11.6	16.7	1542
18–24 kt	160–180°	9.7	9.3	10.7	239

Coverage

cells show sample counts

TWS \ TWA	0–30°	30–40°	40–50°	50–60°	60–75°	75–90°	90–105°	105–120°	120–140°	140–160°	160–180°
0–6 kt	946	589	606	367	397	135	74	74	155	316	758
6–9 kt	2377	2507	1286	1018	1597	1283	845	1026	2413	1472	938
9–12 kt	4447	3196	3330	2149	1780	2216	2311	2220	6516	7202	1260
12–15 kt	3494	5588	5845	1755	2216	2056	1637	1279	3182	5902	541
15–18 kt	2167	3878	3441	671	1540	1159	922	746	1633	3679	292
18–24 kt	1707	743	1592	395	536	274	408	489	476	1542	239
24–40 kt	—	—	—	—	—	—	—	—	—	21	2

Blank cells have no observations. They do not indicate zero boat speed.

BSP across true wind

119853 samples · kt

CELL —

Rows are true wind speed bands (kt); columns are absolute true wind angle bands (°). Cells show median boat speed in knots. Blank cells have no data.

Median boat speed by true wind speed and angle
TWS	TWA	Median BSP (kt)	Samples
0–6 kt	0–30°	2.6	946
0–6 kt	30–40°	4.9	589
0–6 kt	40–50°	4.7	606
0–6 kt	50–60°	5.5	367
0–6 kt	60–75°	4.4	397
0–6 kt	75–90°	3.7	135
0–6 kt	90–105°	3.5	74
0–6 kt	105–120°	4.4	74
0–6 kt	120–140°	3.4	155
0–6 kt	140–160°	3.2	316
0–6 kt	160–180°	2.6	758
6–9 kt	0–30°	3.5	2377
6–9 kt	30–40°	6.6	2507
6–9 kt	40–50°	5.7	1286
6–9 kt	50–60°	5.7	1018
6–9 kt	60–75°	5.9	1597
6–9 kt	75–90°	6.1	1283
6–9 kt	90–105°	6.2	845
6–9 kt	105–120°	5.5	1026
6–9 kt	120–140°	6.1	2413
6–9 kt	140–160°	4.4	1472
6–9 kt	160–180°	3.5	938
9–12 kt	0–30°	6.8	4447
9–12 kt	30–40°	8.0	3196
9–12 kt	40–50°	7.8	3330
9–12 kt	50–60°	7.2	2149
9–12 kt	60–75°	7.6	1780
9–12 kt	75–90°	8.8	2216
9–12 kt	90–105°	8.6	2311
9–12 kt	105–120°	8.2	2220
9–12 kt	120–140°	9.2	6516
9–12 kt	140–160°	9.2	7202
9–12 kt	160–180°	5.0	1260
12–15 kt	0–30°	8.2	3494
12–15 kt	30–40°	8.3	5588
12–15 kt	40–50°	8.3	5845
12–15 kt	50–60°	8.0	1755
12–15 kt	60–75°	7.0	2216
12–15 kt	75–90°	7.7	2056
12–15 kt	90–105°	9.2	1637
12–15 kt	105–120°	9.2	1279
12–15 kt	120–140°	10.1	3182
12–15 kt	140–160°	10.6	5902
12–15 kt	160–180°	8.1	541
15–18 kt	0–30°	8.8	2167
15–18 kt	30–40°	8.8	3878
15–18 kt	40–50°	8.8	3441
15–18 kt	50–60°	8.1	671
15–18 kt	60–75°	8.4	1540
15–18 kt	75–90°	9.4	1159
15–18 kt	90–105°	10.5	922
15–18 kt	105–120°	10.5	746
15–18 kt	120–140°	11.2	1633
15–18 kt	140–160°	12.6	3679
15–18 kt	160–180°	9.4	292
18–24 kt	0–30°	9.0	1707
18–24 kt	30–40°	8.2	743
18–24 kt	40–50°	8.9	1592
18–24 kt	50–60°	7.9	395
18–24 kt	60–75°	8.2	536
18–24 kt	75–90°	8.9	274
18–24 kt	90–105°	10.0	408
18–24 kt	105–120°	10.6	489
18–24 kt	120–140°	13.4	476
18–24 kt	140–160°	14.9	1542
18–24 kt	160–180°	9.7	239
24–40 kt	140–160°	18.6	21
24–40 kt	160–180°	17.2	2

Upwind tack balance

Port minus starboard · knots

TWS · kt	\|TWA\| · °	Samples Port / stbd	Δ BSP · kt
0–6	40–50	51 / 555	+0.5
0–6	50–60	239 / 128	+3
6–9	30–40	832 / 1675	+1.6
6–9	40–50	361 / 925	+1.1
6–9	50–60	335 / 683	+0.5
9–12	30–40	2241 / 955	+0.9
9–12	40–50	821 / 2509	-1.4
9–12	50–60	573 / 1576	-0.7
12–15	30–40	3212 / 2376	+0.6
12–15	40–50	632 / 5213	-1.1
12–15	50–60	246 / 1509	-1.1
15–18	30–40	1783 / 2095	+0.6
15–18	40–50	307 / 3134	-1.7
15–18	50–60	133 / 538	-0.3
18–24	30–40	303 / 440	-0.5
18–24	40–50	60 / 1532	-2.5
18–24	50–60	80 / 315	-1.1

Positive values indicate faster sailing on port; negative values indicate faster sailing on starboard. Only bands with readings on both tacks are shown. These differences alone cannot establish a calibration error.