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Instrument performance · TP52 Super Series

TP52 performance analysis

Cascais, Portugal · September 2015 · eight TP52 sessions.

All sessions · 32 analyzed tacks · 64 unavailable

Instrument performance

Speed through the turn

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

Aligned tack speed

32 turns · BSP kt · median / IQR
3.16.19.212.2-2920.369.7119BSP · kttime · s
Each turn contributes at most one boat speed (BSP) value per second. Gaps of up to 3 seconds are interpolated. Faint lines show individual turns.

Selected tack

3.15.27.39.4-300306090120BSP · kttime · s
Entry 4.4 · low 3.1

Wind angle through turn

TWA °
-56.88.573.9139.2-300306090120TWA · ° unwrappedtime · s
Recorded true wind angle (TWA), unwrapped across ±180° to keep the trace continuous. The cursor shows the original signed angle. The dashed line marks the detected turn at 0 seconds.

Turn duration

32 tacks · s
01224counts3.545.487.3
Hover or focus a bar to inspect its interval and count.
Observed distribution; median 5.2 s.

Recovery

32 tacks · s
0815counts12.236.360.4
Hover or focus a bar to inspect its interval and count.
Observed distribution; median 22.9 s.

Acceleration

32 tacks · s
0611counts3.527.651.8
Hover or focus a bar to inspect its interval and count.
Observed distribution; median 17.3 s.

Recovery by session

median seconds · analyzed tacks
030.260.4median · s12345
Hover or focus a session to inspect its median and sample count.
1. Sep 14, 2015: 30.4 s (n=1) · 2. Sep 15, 2015: 22.6 s (n=6) · 3. Sep 16, 2015: 20.3 s (n=12) · 4. Sep 17, 2015: 23.2 s (n=12) · 5. Sep 19, 2015: 60.4 s (n=1)

Entry speed versus recovery

32 analyzed tacks · BSP kt / recovery s
12.228.344.360.44.46.289.8recovery · sentry BSP · ktTurn: 4.4 kt, 30.4 sTurn: 8.4 kt, 20.7 sTurn: 9 kt, 24.8 sTurn: 8.9 kt, 18.1 sTurn: 9 kt, 20.8 sTurn: 9.1 kt, 45.7 sTurn: 8.9 kt, 24.4 sTurn: 7.3 kt, 14.8 sTurn: 9 kt, 23.1 sTurn: 8.7 kt, 29.2 sTurn: 7.7 kt, 18.7 sTurn: 7.1 kt, 16.1 sTurn: 8.5 kt, 40.5 sTurn: 8.1 kt, 20.3 sTurn: 8.1 kt, 18.7 sTurn: 5.7 kt, 20.3 sTurn: 9.8 kt, 17.4 sTurn: 8.5 kt, 21.6 sTurn: 7.6 kt, 22.9 sTurn: 7.9 kt, 36.2 sTurn: 8.6 kt, 23.4 sTurn: 8.7 kt, 22.9 sTurn: 8 kt, 26.4 sTurn: 7.9 kt, 24.1 sTurn: 8.1 kt, 33.5 sTurn: 8.1 kt, 15.2 sTurn: 9.1 kt, 32.6 sTurn: 8.5 kt, 21.9 sTurn: 7.5 kt, 12.2 sTurn: 8.5 kt, 23.1 sTurn: 8.6 kt, 18.8 sTurn: 7.5 kt, 60.4 s
Hover or focus a point to inspect entry speed and recovery.
Each point represents an analyzed tack. Recovery is the time taken to return to the speed threshold based on entry speed.

Distance lost through the turn

RankSession / turnEntry / low BSPTurn / accelerationLossRecoveryStatus / reason
1Sep 15, 2015 · 9/15/20159.1 kt / 5.6 kt19 s / 38 s42.4 m45.7 sAnalyzed
2Sep 16, 2015 · 9/16/20159.8 kt / 5.5 kt27.6 s / 12.1 s32.3 m17.4 sAnalyzed
3Sep 17, 2015 · 9/17/20158.1 kt / 5.3 kt87.3 s / 26.8 s25.7 m33.5 sAnalyzed
4Sep 15, 2015 · 9/15/20159 kt / 6.6 kt3.5 s / 18.1 s22.2 m24.8 sAnalyzed
5Sep 19, 2015 · 9/19/20157.5 kt / 5.7 kt28.5 s / 51.8 s20.4 m60.4 sAnalyzed
6Sep 17, 2015 · 9/17/20157.9 kt / 6.3 kt5.2 s / 20.7 s19.2 m36.2 sAnalyzed
7Sep 17, 2015 · 9/17/20157.9 kt / 5.9 kt6 s / 14.7 s19.2 m24.1 sAnalyzed
8Sep 14, 2015 · 9/14/20154.4 kt / 3.1 kt22 s / 26 s18.8 m30.4 sAnalyzed
9Sep 17, 2015 · 9/17/20158.6 kt / 6.5 kt4.3 s / 17.3 s18 m23.4 sAnalyzed
10Sep 16, 2015 · 9/16/20158.7 kt / 6.7 kt5.2 s / 21.6 s17.5 m29.2 sAnalyzed
11Sep 15, 2015 · 9/15/20158.9 kt / 6.8 kt3.5 s / 18.1 s17.3 m24.4 sAnalyzed
12Sep 17, 2015 · 9/17/20158 kt / 6.2 kt5.2 s / 22.5 s16.9 m26.4 sAnalyzed
—Sep 14, 2015 · 9/14/201511.1 kt / 5.2 kt— / —75.9 m—Not analyzed: no held pre-turn TWA-stable departure observed; BSP recovery to threshold censored or missing before observation boundary
—Sep 13, 2015 · 9/13/20159.6 kt / 4.1 kt5 s / —71.6 m—Not analyzed: BSP recovery to threshold censored or missing before observation boundary
—Sep 15, 2015 · 9/15/201510.1 kt / 5.6 kt— / 97.6 s67.8 m105 sNot analyzed: no held pre-turn TWA-stable departure observed
—Sep 19, 2015 · 9/19/201510 kt / 5.2 kt— / 97.6 s67.7 m103.5 sNot analyzed: no held pre-turn TWA-stable departure observed
Entry hold compares recorded distance with the distance traveled at a constant entry speed. Each metric uses its available measurements. Missing values include the reason they could not be calculated.

Session comparisons

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 / IQR
3.65.77.79.811.9kt12345678
Hover or focus a session to inspect its median, IQR, and coverage.
n shows available measurements / events; c counts censored events.

TWA turn duration

s · median / IQR
024.348.77397.3s12345678
Hover or focus a session to inspect its median, IQR, and coverage.
n shows available measurements / events; c counts censored events.

Speed recovery

s · median / IQR
029.158.287.3116.3s12345678
Hover or focus a session to inspect its median, IQR, and coverage.
n shows available measurements / events; c counts censored events.

Loss

m · median / IQR
-25.72.430.558.786.8m12345678
Hover or focus a session to inspect its median, IQR, and coverage.
n shows available measurements / events; c counts censored events.

Wind conditions differ between sessions.

Empirical speed polar

Angle: absolute TWA · radius: BSP in knots
True wind speed

No measured speed bins are available.

Coverage

cells show sample counts
TWS \ TWA0–30°30–40°40–50°50–60°60–75°75–90°90–105°105–120°120–140°140–160°160–180°
0–6 kt9465896063673971357474155316758
6–9 kt237725071286101815971283845102624131472938
9–12 kt44473196333021491780221623112220651672021260
12–15 kt3494558858451755221620561637127931825902541
15–18 kt2167387834416711540115992274616333679292
18–24 kt170774315923955362744084894761542239
24–40 kt—————————212

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

BSP across true wind

119853 samples · kt
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
2.6
4.9
4.7
5.5
4.4
3.7
3.5
4.4
3.4
3.2
2.6
6–9 kt
3.5
6.6
5.7
5.7
5.9
6.1
6.2
5.5
6.1
4.4
3.5
9–12 kt
6.8
8
7.8
7.2
7.6
8.8
8.6
8.2
9.2
9.2
5
12–15 kt
8.2
8.3
8.3
8
7
7.7
9.2
9.2
10.1
10.6
8.1
15–18 kt
8.8
8.8
8.8
8.1
8.4
9.4
10.5
10.5
11.2
12.6
9.4
18–24 kt
9
8.2
8.9
7.9
8.2
8.9
10
10.6
13.4
14.9
9.7
24–40 kt
–
–
–
–
–
–
–
–
–
18.6
17.2
Touch, hover, or focus a wind cell for BSP and sample count.
Rows group true wind speed (TWS); columns group absolute true wind angle (TWA). Cells show median boat speed in knots. Blank cells have no accepted observations.

Upwind tack balance

Port minus starboard · knots
TWS · kt|TWA| · °Samples
Port / stbd		Δ BSP · kt
0–640–5051 / 555+0.5
0–650–60239 / 128+3
6–930–40832 / 1675+1.6
6–940–50361 / 925+1.1
6–950–60335 / 683+0.5
9–1230–402241 / 955+0.9
9–1240–50821 / 2509-1.4
9–1250–60573 / 1576-0.7
12–1530–403212 / 2376+0.6
12–1540–50632 / 5213-1.1
12–1550–60246 / 1509-1.1
15–1830–401783 / 2095+0.6
15–1840–50307 / 3134-1.7
15–1850–60133 / 538-0.3
18–2430–40303 / 440-0.5
18–2440–5060 / 1532-2.5
18–2450–6080 / 315-1.1
Positive values indicate faster sailing on port; negative values indicate faster sailing on starboard. Each wind bin has at least 30 samples per tack. These differences alone cannot establish a calibration error.