RAMROD: ORC Rating

GPH

526.5

OSN

511.1

LOA

11.3 m

Displacement

3521 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.7816

Medium

1.0273

High

1.1958

Triple Offshore

Low

1.0027

Medium

1.2771

High

1.4731

Boat Specifications

Dimensions

Length overall: 11.3 m
Beam: 3.65 m
Draft: 2.51 m
Displacement: 3521 kg
Crew weight: 686 kg
Wetted surface: 28.01 m²

Sails

Mainsail: 50.38 m²
Genoa: 35.34 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 149.91 m²

Design

Type: IC-37
Builder: Melges
Designer: Mills
Year built: 2017

Performance data

Polar CSV

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

6,42.9,5.733453,52,6.37,60,6.7,75,6.92,90,6.78,110,6.74,120,6.58,135,5.88,142.1,5.411337,150,4.93
8,40.4,6.657577,52,7.43,60,7.66,75,7.81,90,7.75,110,7.92,120,7.86,135,7.39,144.9,6.661372,150,6.29
10,38.5,7.027783,52,7.89,60,8.16,75,8.43,90,8.39,110,8.74,120,8.76,135,8.29,149.2,7.462514,150,7.4
12,38.2,7.253229,52,8.11,60,8.45,75,8.95,90,9.07,110,9.29,120,9.64,135,9.2,150,8.24,150.8,8.179424
14,37.8,7.365643,52,8.27,60,8.66,75,9.27,90,9.71,110,9.79,120,10.31,135,10.3,148.1,9.199364,150,9.02
16,37.6,7.446772,52,8.4,60,8.82,75,9.52,90,10.2,110,10.28,120,10.94,135,11.54,146.1,10.445629,150,10.01
20,37.8,7.542824,52,8.55,60,9.02,75,9.89,90,10.91,110,11.65,120,12.17,135,13.78,143.1,13.755422,150,12.69
24,39.1,7.589752,52,8.57,60,9.09,75,10.1,90,11.44,110,13.13,120,13.39,135,15.8,147.3,16.862529,150,16.39

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	6.37	6.7	6.92	6.78	6.74	6.58	5.88	4.93
8	7.43	7.66	7.81	7.75	7.92	7.86	7.39	6.29
10	7.89	8.16	8.43	8.39	8.74	8.76	8.29	7.4
12	8.11	8.45	8.95	9.07	9.29	9.64	9.2	8.24
14	8.27	8.66	9.27	9.71	9.79	10.31	10.3	9.02
16	8.4	8.82	9.52	10.2	10.28	10.94	11.54	10.01
20	8.55	9.02	9.89	10.91	11.65	12.17	13.78	12.69
24	8.57	9.09	10.1	11.44	13.13	13.39	15.8	16.39

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.9°	4.2	142.1°	4.27
8	40.4°	5.07	144.9°	5.45
10	38.5°	5.5	149.2°	6.41
12	38.2°	5.7	150.8°	7.14
14	37.8°	5.82	148.1°	7.81
16	37.6°	5.9	146.1°	8.67
20	37.8°	5.96	143.1°	11
24	39.1°	5.89	147.3°	14.19

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°	6.37	7.43	7.89	8.11	8.27	8.40	8.55	8.57
60°	6.70	7.66	8.16	8.45	8.66	8.82	9.02	9.09
75°	6.92	7.81	8.43	8.95	9.27	9.52	9.89	10.10
90°	6.78	7.75	8.39	9.07	9.71	10.20	10.91	11.44
110°	6.74	7.92	8.74	9.29	9.79	10.28	11.65	13.13
120°	6.58	7.86	8.76	9.64	10.31	10.94	12.17	13.39
135°	5.88	7.39	8.29	9.20	10.30	11.54	13.78	15.80
150°	4.93	6.29	7.40	8.24	9.02	10.01	12.69	16.39