La Nonna: ORC Rating

GPH

702.5

OSN

682.4

LOA

9.75 m

Displacement

4320 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5755

Medium

0.7831

High

0.8991

Triple Offshore

Low

0.7434

Medium

0.9663

High

1.0755

Boat Specifications

Dimensions

Length overall: 9.75 m
Beam: 3.12 m
Draft: 1.8 m
Displacement: 4320 kg
Crew weight: 330 kg
Wetted surface: 21.3 m²

Sails

Mainsail: 27.77 m²
Genoa: 25.14 m²
Spinnaker: 61.68 m²
Asymmetric spinnaker: 0 m²

Design

Type: Seawind 32
Builder: Muovi-Simola
Designer: Eivind Still
Year built: 1982

Performance data

Polar CSV

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

6,43.5,4.108223,52,4.58,60,4.85,75,5.07,90,5.04,110,5.1,120,4.95,135,4.48,147,3.934799,150,3.81
8,41.6,4.787389,52,5.4,60,5.7,75,5.95,90,6.06,110,6.15,120,6.01,135,5.48,150,4.79,151,4.744919
10,41.6,5.402528,52,6.04,60,6.27,75,6.43,90,6.58,110,6.67,120,6.6,135,6.31,150,5.66,152,5.560919
12,41.2,5.781385,52,6.35,60,6.53,75,6.69,90,6.8,110,7,120,6.94,135,6.73,150,6.36,159,6.019835
14,40.5,5.89159,52,6.49,60,6.67,75,6.87,90,6.96,110,7.29,120,7.27,135,7.05,150,6.74,180,6.23
16,40.5,5.957344,52,6.54,60,6.74,75,7.01,90,7.16,110,7.5,120,7.61,135,7.39,150,7.04,180,6.64
20,42,6.028435,52,6.55,60,6.78,75,7.16,90,7.49,110,7.78,120,8.07,135,8.08,150,7.69,180,7.23

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.58	4.85	5.07	5.04	5.1	4.95	4.48	3.81
8	5.4	5.7	5.95	6.06	6.15	6.01	5.48	4.79
10	6.04	6.27	6.43	6.58	6.67	6.6	6.31	5.66
12	6.35	6.53	6.69	6.8	7	6.94	6.73	6.36
14	6.49	6.67	6.87	6.96	7.29	7.27	7.05	6.74
16	6.54	6.74	7.01	7.16	7.5	7.61	7.39	7.04
20	6.55	6.78	7.16	7.49	7.78	8.07	8.08	7.69

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	43.5°	2.98	147°	3.3
8	41.6°	3.58	151°	4.15
10	41.6°	4.04	152°	4.91
12	41.2°	4.35	159°	5.62
14	40.5°	4.48	180°	6.23
16	40.5°	4.53	180°	6.64
20	42°	4.48	180°	7.23

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°	4.58	5.40	6.04	6.35	6.49	6.54	6.55
60°	4.85	5.70	6.27	6.53	6.67	6.74	6.78
75°	5.07	5.95	6.43	6.69	6.87	7.01	7.16
90°	5.04	6.06	6.58	6.80	6.96	7.16	7.49
110°	5.10	6.15	6.67	7.00	7.29	7.50	7.78
120°	4.95	6.01	6.60	6.94	7.27	7.61	8.07
135°	4.48	5.48	6.31	6.73	7.05	7.39	8.08
150°	3.81	4.79	5.66	6.36	6.74	7.04	7.69