Mills Boat Academy: ORC Rating

GPH

662.9

OSN

640.6

LOA

10.53 m

Displacement

4389 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6015

Medium

0.837

High

0.9709

Triple Offshore

Low

0.7783

Medium

1.0286

High

1.1563

Boat Specifications

Dimensions

Length overall: 10.53 m
Beam: 3.33 m
Draft: 1.94 m
Displacement: 4389 kg
Crew weight: 480 kg
Wetted surface: 24 m²

Sails

Mainsail: 31.57 m²
Genoa: 29.19 m²
Spinnaker: 64.12 m²
Asymmetric spinnaker: 0 m²

Design

Type: Lavranos 34
Builder: John Robertson Yac
Designer: Angelo Lavranos
Year built: 1986

Performance data

Polar CSV

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

6,43.6,4.487885,52,4.98,60,5.25,75,5.42,90,5.3,110,5.23,120,5.04,135,4.47,144.9,3.947933,150,3.72
8,41.4,5.305881,52,5.91,60,6.15,75,6.32,90,6.28,110,6.33,120,6.15,135,5.57,149.6,4.834706,150,4.81
10,39.7,5.874711,52,6.51,60,6.7,75,6.83,90,6.9,110,6.98,120,6.86,135,6.46,150,5.76,151.8,5.673415
12,38.5,6.171671,52,6.84,60,7,75,7.15,90,7.24,110,7.38,120,7.3,135,7.01,150,6.53,158.3,6.177805
14,37.9,6.285769,52,6.98,60,7.16,75,7.38,90,7.43,110,7.74,120,7.68,135,7.4,150,7.02,170,6.458113
16,37.8,6.340528,52,7.04,60,7.24,75,7.53,90,7.67,110,8.05,120,8.05,135,7.79,150,7.39,177.2,6.878212
20,38.2,6.387931,52,7.09,60,7.31,75,7.69,90,8.02,110,8.45,120,8.78,135,8.6,150,8.12,178.6,7.582263
24,39.3,6.357902,52,7.07,60,7.32,75,7.77,90,8.21,110,8.76,120,9.39,135,9.84,150,8.99,178.6,8.272469

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.98	5.25	5.42	5.3	5.23	5.04	4.47	3.72
8	5.91	6.15	6.32	6.28	6.33	6.15	5.57	4.81
10	6.51	6.7	6.83	6.9	6.98	6.86	6.46	5.76
12	6.84	7	7.15	7.24	7.38	7.3	7.01	6.53
14	6.98	7.16	7.38	7.43	7.74	7.68	7.4	7.02
16	7.04	7.24	7.53	7.67	8.05	8.05	7.79	7.39
20	7.09	7.31	7.69	8.02	8.45	8.78	8.6	8.12
24	7.07	7.32	7.77	8.21	8.76	9.39	9.84	8.99

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.6°	3.25	144.9°	3.23
8	41.4°	3.98	149.6°	4.17
10	39.7°	4.52	151.8°	5
12	38.5°	4.83	158.3°	5.74
14	37.9°	4.96	170°	6.36
16	37.8°	5.01	177.2°	6.87
20	38.2°	5.02	178.6°	7.58
24	39.3°	4.92	178.6°	8.27

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 kt24 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)	Boat speed in 24 kt (kt)
0°	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
52°	4.98	5.91	6.51	6.84	6.98	7.04	7.09	7.07
60°	5.25	6.15	6.70	7.00	7.16	7.24	7.31	7.32
75°	5.42	6.32	6.83	7.15	7.38	7.53	7.69	7.77
90°	5.30	6.28	6.90	7.24	7.43	7.67	8.02	8.21
110°	5.23	6.33	6.98	7.38	7.74	8.05	8.45	8.76
120°	5.04	6.15	6.86	7.30	7.68	8.05	8.78	9.39
135°	4.47	5.57	6.46	7.01	7.40	7.79	8.60	9.84
150°	3.72	4.81	5.76	6.53	7.02	7.39	8.12	8.99