LS: Ghost ship

Polar graph for LiveSkipper's Ghost ship[Updated] LiveSkipper’s Ghost ship, our vessel during the upcoming Ghost race, has just three sails: a sigh, a whisper and a howl. The polar graph shown here is a composite of the three.

Sailing the ghost ship should be fairly straightforward.

The sigh is good for wind angles up to 90 ~ 100° at windspeeds of up to 17 knots; use the whisper for wind angles from approximately 100 ~ 135°, or even at slightly higher angles of attack at windspeeds of over 18 kts; the howl will be most effective starting at angles from 136° at 6 knots of wind, shifting upwards as the wind strenghtens. (Of course there is an Auto sail as well.)

The raw polar data is as follows:

Ghostship polar
TWA/TWS	0	6	12.0	16.0	19.0	23.0	27.0	31.0	39.0
0	0	0	0.0	0.0	0.0	0.0	0.0	0.0	0.0
45	0	5.5	7.3	7.7	7.8	8.1	8.3	8.5	6.0
60	0	7.8	10.3	10.9	11.0	11.4	11.7	12.0	8.4
75	0	8.3	11.1	11.8	12.0	12.5	13.0	13.5	10.0
90	0	8.5	11.5	12.6	13.5	14.3	15.1	15.7	11.2
110	0	8.6	11.9	13.5	15.0	16.3	17.4	18.3	13.2
120	0	8.4	12.1	13.9	15.3	17.0	18.6	19.9	14.3
135	0	7.1	11.6	14.1	16.1	18.2	20.0	21.5	15.4
150	0	6.0	10.3	12.5	14.8	17.7	20.6	22.9	16.4
180	0	4.4	8.5	10.5	11.9	14.5	17.3	19.5	14.0

A polar suitable for use with Bluewater Racing can be downloaded from here.

2 thoughts on “LS: Ghost ship

  1. Yeeeaaahhhh the Ghost will be around in this Sailing Race, whoooeaaaahh

    The things mentioned on sails and polars , indeed new, and clear. But what is more interesting will show up only after you have started the race :lol:
    Misty darks nights, strange lights in the water or what is that ???
    This is the most enjoyable virtual race there will be, you can not miss this one.

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