GANDALF 5: ORC Rating

GPH

589.1

OSN

570.4

LOA

11.615 m

Displacement

6329 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6911

Medium

0.9412

High

1.0862

Triple Offshore

Low

0.8895

Medium

1.1498

High

1.291

Boat Specifications

Dimensions

Length overall: 11.615 m
Beam: 3.82 m
Draft: 2.45 m
Displacement: 6329 kg
Crew weight: 726 kg
Wetted surface: 30.29 m²

Sails

Mainsail: 45.05 m²
Genoa: 35.06 m²
Spinnaker: 105.44 m²
Asymmetric spinnaker: 96.42 m²

Design

Type: PRIMA 38 OD
Builder: SEAQUEST YACHTS
Designer: STEPHEN JONES
Year built: 1998
Stability index: 131.7

Performance data

Polar CSV

Each row is TWS followed by TWA and boat-speed pairs. Paste it directly into Offwind or compatible navigation software.

6,43,5.086458,52,5.62,60,5.9,75,6.07,90,6,110,6.01,120,5.82,135,5.2,140.6,4.865843,150,4.34
8,40.5,5.957344,52,6.64,60,6.87,75,7.02,90,7.09,110,7.18,120,7.02,135,6.46,147.5,5.679451,150,5.53
10,38.8,6.531184,52,7.23,60,7.4,75,7.52,90,7.64,110,7.78,120,7.7,135,7.31,150,6.55,151.6,6.457124
12,37.5,6.806551,52,7.53,60,7.69,75,7.84,90,7.96,110,8.21,120,8.17,135,7.83,150,7.32,156.8,6.995705
14,36.9,6.940236,52,7.69,60,7.88,75,8.09,90,8.15,110,8.6,120,8.62,135,8.29,150,7.82,166.4,7.253377
16,36.6,7.025258,52,7.78,60,8,75,8.3,90,8.43,110,8.93,120,9.05,135,8.76,150,8.25,177.2,7.58906
20,36.4,7.094104,52,7.88,60,8.14,75,8.57,90,8.89,110,9.39,120,9.95,135,9.83,150,9.17,177.2,8.420052

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.62	5.9	6.07	6	6.01	5.82	5.2	4.34
8	6.64	6.87	7.02	7.09	7.18	7.02	6.46	5.53
10	7.23	7.4	7.52	7.64	7.78	7.7	7.31	6.55
12	7.53	7.69	7.84	7.96	8.21	8.17	7.83	7.32
14	7.69	7.88	8.09	8.15	8.6	8.62	8.29	7.82
16	7.78	8	8.3	8.43	8.93	9.05	8.76	8.25
20	7.88	8.14	8.57	8.89	9.39	9.95	9.83	9.17

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43°	3.72	140.6°	3.76
8	40.5°	4.53	147.5°	4.79
10	38.8°	5.09	151.6°	5.68
12	37.5°	5.4	156.8°	6.43
14	36.9°	5.55	166.4°	7.05
16	36.6°	5.64	177.2°	7.58
20	36.4°	5.71	177.2°	8.41

VPP POLAR · BOAT SPEED BY TWAKT

TRUE WIND ANGLE —

READ AT ANGLE

Hover or tap the chart, or use the slider, to read boat speeds.

True wind speed 6 kt8 kt10 kt12 kt14 kt16 kt20 kt

Data table

Boat speed by true wind angle and true wind speed
TWA	Boat speed in 6 kt (kt)	Boat speed in 8 kt (kt)	Boat speed in 10 kt (kt)	Boat speed in 12 kt (kt)	Boat speed in 14 kt (kt)	Boat speed in 16 kt (kt)	Boat speed in 20 kt (kt)
0°	0.00	0.00	0.00	0.00	0.00	0.00	0.00
52°	5.62	6.64	7.23	7.53	7.69	7.78	7.88
60°	5.90	6.87	7.40	7.69	7.88	8.00	8.14
75°	6.07	7.02	7.52	7.84	8.09	8.30	8.57
90°	6.00	7.09	7.64	7.96	8.15	8.43	8.89
110°	6.01	7.18	7.78	8.21	8.60	8.93	9.39
120°	5.82	7.02	7.70	8.17	8.62	9.05	9.95
135°	5.20	6.46	7.31	7.83	8.29	8.76	9.83
150°	4.34	5.53	6.55	7.32	7.82	8.25	9.17