CEPHEI II: ORC Rating

GPH

586.9

OSN

570.6

LOA

12.259 m

Displacement

8300 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7736

Medium

1.054

High

1.2175

Triple Offshore

Low

1.0014

Medium

1.3001

High

1.4546

Boat Specifications

Dimensions

Length overall: 12.259 m
Beam: 3.88 m
Draft: 2.4 m
Displacement: 8300 kg
Crew weight: 840 kg
Wetted surface: 33.99 m²

Sails

Mainsail: 50.92 m²
Genoa: 41.59 m²
Spinnaker: 129.42 m²
Asymmetric spinnaker: 127.94 m²

Design

Type: ELAN 410 DK
Builder: ELAN MARINE
Designer: HUMPHREYS Rob
Year built: 2006

Performance data

Polar CSV

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

6,42.8,4.933696,52,5.52,60,5.84,75,6.11,90,6.04,110,6.1,120,5.92,135,5.32,141.4,4.951886,150,4.47
8,40.9,5.794774,52,6.56,60,6.88,75,7.13,90,7.24,110,7.33,120,7.17,135,6.54,148.3,5.688689,150,5.59
10,40.4,6.526264,52,7.29,60,7.52,75,7.68,90,7.81,110,7.95,120,7.85,135,7.49,148.8,6.710591,150,6.63
12,39.5,6.894544,52,7.62,60,7.82,75,7.99,90,8.02,110,8.33,120,8.28,135,7.99,150,7.48,155,7.205058
14,38.7,6.99614,52,7.75,60,7.97,75,8.21,90,8.29,110,8.64,120,8.71,135,8.4,150,7.96,166.6,7.3501
16,38.5,7.04056,52,7.81,60,8.03,75,8.37,90,8.56,110,8.85,120,9.15,135,8.86,150,8.34,180,7.72
20,38.4,7.196691,52,7.89,60,8.09,75,8.51,90,9,110,9.24,120,9.69,135,9.9,150,9.21,180,8.48

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.52	5.84	6.11	6.04	6.1	5.92	5.32	4.47
8	6.56	6.88	7.13	7.24	7.33	7.17	6.54	5.59
10	7.29	7.52	7.68	7.81	7.95	7.85	7.49	6.63
12	7.62	7.82	7.99	8.02	8.33	8.28	7.99	7.48
14	7.75	7.97	8.21	8.29	8.64	8.71	8.4	7.96
16	7.81	8.03	8.37	8.56	8.85	9.15	8.86	8.34
20	7.89	8.09	8.51	9	9.24	9.69	9.9	9.21

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.8°	3.62	141.4°	3.87
8	40.9°	4.38	148.3°	4.84
10	40.4°	4.97	148.8°	5.74
12	39.5°	5.32	155°	6.53
14	38.7°	5.46	166.6°	7.15
16	38.5°	5.51	180°	7.72
20	38.4°	5.64	180°	8.48

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°	5.52	6.56	7.29	7.62	7.75	7.81	7.89
60°	5.84	6.88	7.52	7.82	7.97	8.03	8.09
75°	6.11	7.13	7.68	7.99	8.21	8.37	8.51
90°	6.04	7.24	7.81	8.02	8.29	8.56	9.00
110°	6.10	7.33	7.95	8.33	8.64	8.85	9.24
120°	5.92	7.17	7.85	8.28	8.71	9.15	9.69
135°	5.32	6.54	7.49	7.99	8.40	8.86	9.90
150°	4.47	5.59	6.63	7.48	7.96	8.34	9.21