GANDALF 5: ORC Rating

GPH

593.1

OSN

574.2

LOA

11.615 m

Displacement

6329 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.679

Medium

0.9343

High

1.0845

Triple Offshore

Low

0.8779

Medium

1.1446

High

1.2916

Boat Specifications

Dimensions

Length overall: 11.615 m
Beam: 3.82 m
Draft: 2.45 m
Displacement: 6329 kg
Crew weight: 729 kg
Wetted surface: 30.3 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.

6,42.9,4.900737,52,5.46,60,5.76,75,5.99,90,5.98,110,6,120,5.8,135,5.2,141.2,4.837439,150,4.36
8,41.1,5.812384,52,6.51,60,6.8,75,7,90,7.14,110,7.21,120,7.05,135,6.46,147.9,5.642635,150,5.51
10,40,6.500928,52,7.19,60,7.37,75,7.5,90,7.67,110,7.78,120,7.69,135,7.33,150,6.55,150.2,6.545548
12,38.4,6.839409,52,7.51,60,7.67,75,7.81,90,7.94,110,8.21,120,8.14,135,7.82,150,7.34,156.5,7.033345
14,37.5,6.957808,52,7.67,60,7.86,75,8.07,90,8.13,110,8.66,120,8.66,135,8.26,150,7.8,166.7,7.254576
16,37.2,7.030495,52,7.75,60,7.98,75,8.31,90,8.45,110,8.96,120,9.19,135,8.78,150,8.22,177.5,7.587221
20,36.4,7.106528,52,7.8,60,8.08,75,8.61,90,9.03,110,9.47,120,10.05,135,10.01,150,9.23,177.2,8.390017

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.46	5.76	5.99	5.98	6	5.8	5.2	4.36
8	6.51	6.8	7	7.14	7.21	7.05	6.46	5.51
10	7.19	7.37	7.5	7.67	7.78	7.69	7.33	6.55
12	7.51	7.67	7.81	7.94	8.21	8.14	7.82	7.34
14	7.67	7.86	8.07	8.13	8.66	8.66	8.26	7.8
16	7.75	7.98	8.31	8.45	8.96	9.19	8.78	8.22
20	7.8	8.08	8.61	9.03	9.47	10.05	10.01	9.23

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.9°	3.59	141.2°	3.77
8	41.1°	4.38	147.9°	4.78
10	40°	4.98	150.2°	5.68
12	38.4°	5.36	156.5°	6.45
14	37.5°	5.52	166.7°	7.06
16	37.2°	5.6	177.5°	7.58
20	36.4°	5.72	177.2°	8.38

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°	5.46	6.51	7.19	7.51	7.67	7.75	7.80
60°	5.76	6.80	7.37	7.67	7.86	7.98	8.08
75°	5.99	7.00	7.50	7.81	8.07	8.31	8.61
90°	5.98	7.14	7.67	7.94	8.13	8.45	9.03
110°	6.00	7.21	7.78	8.21	8.66	8.96	9.47
120°	5.80	7.05	7.69	8.14	8.66	9.19	10.05
135°	5.20	6.46	7.33	7.82	8.26	8.78	10.01
150°	4.36	5.51	6.55	7.34	7.80	8.22	9.23