AELLA: ORC Rating

GPH

617.3

OSN

599.6

LOA

12.3 m

Displacement

7889 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6462

Medium

0.8889

High

1.0233

Triple Offshore

Low

0.8406

Medium

1.1026

High

1.2308

Boat Specifications

Dimensions

Length overall: 12.3 m
Beam: 3.9 m
Draft: 1.99 m
Displacement: 7889 kg
Crew weight: 500 kg
Wetted surface: 31.1 m²

Sails

Mainsail: 45.8 m²
Genoa: 40.44 m²
Spinnaker: 123.79 m²
Asymmetric spinnaker: 0 m²

Design

Type: FIRST 41 S5
Builder: BENETEAU
Designer: BERRET
Year built: 1988
Stability index: 123.2

Performance data

Polar CSV

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

6,44.2,4.672828,52,5.18,60,5.51,75,5.78,90,5.73,110,5.8,120,5.66,135,5.12,137.8,4.967572,150,4.24
8,42.4,5.511505,52,6.17,60,6.52,75,6.8,90,6.84,110,7.03,120,6.91,135,6.34,148.7,5.430338,150,5.36
10,42,6.189911,52,6.9,60,7.17,75,7.37,90,7.47,110,7.67,120,7.61,135,7.29,146.9,6.672884,150,6.45
12,41.4,6.57236,52,7.26,60,7.48,75,7.68,90,7.74,110,8.05,120,8.03,135,7.79,150,7.31,155.9,7.022086
14,40.8,6.697534,52,7.39,60,7.63,75,7.89,90,8.01,110,8.34,120,8.45,135,8.2,150,7.78,164.9,7.27105
16,41.2,6.818047,52,7.46,60,7.7,75,8.05,90,8.26,110,8.55,120,8.83,135,8.64,150,8.16,177.2,7.549012
20,41.2,6.857918,52,7.49,60,7.76,75,8.22,90,8.66,110,8.91,120,9.28,135,9.56,150,9.02,177.2,8.299909

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.18	5.51	5.78	5.73	5.8	5.66	5.12	4.24
8	6.17	6.52	6.8	6.84	7.03	6.91	6.34	5.36
10	6.9	7.17	7.37	7.47	7.67	7.61	7.29	6.45
12	7.26	7.48	7.68	7.74	8.05	8.03	7.79	7.31
14	7.39	7.63	7.89	8.01	8.34	8.45	8.2	7.78
16	7.46	7.7	8.05	8.26	8.55	8.83	8.64	8.16
20	7.49	7.76	8.22	8.66	8.91	9.28	9.56	9.02

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.2°	3.35	137.8°	3.68
8	42.4°	4.07	148.7°	4.64
10	42°	4.6	146.9°	5.59
12	41.4°	4.93	155.9°	6.41
14	40.8°	5.07	164.9°	7.02
16	41.2°	5.13	177.2°	7.54
20	41.2°	5.16	177.2°	8.29

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°	5.18	6.17	6.90	7.26	7.39	7.46	7.49
60°	5.51	6.52	7.17	7.48	7.63	7.70	7.76
75°	5.78	6.80	7.37	7.68	7.89	8.05	8.22
90°	5.73	6.84	7.47	7.74	8.01	8.26	8.66
110°	5.80	7.03	7.67	8.05	8.34	8.55	8.91
120°	5.66	6.91	7.61	8.03	8.45	8.83	9.28
135°	5.12	6.34	7.29	7.79	8.20	8.64	9.56
150°	4.24	5.36	6.45	7.31	7.78	8.16	9.02