GRANSLAM — ORC Rating

GPH

615.7

OSN

601.2

LOA

12.75 m

Displacement

8860 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.6865

Medium

0.8885

High

0.9882

Triple Offshore

Low

0.8767

Medium

1.0897

High

1.1835

Boat Specifications

Dimensions

Length overall: 12.75 m
Beam: 3.93 m
Draft: 2.19 m
Displacement: 8860 kg
Crew weight: 480 kg
Wetted surface: 32.77 m²

Sails

Mainsail: 40.52 m²
Genoa: 60.53 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 147.72 m²

Design

Type: CARTER 42
Builder: MARYOLA
Designer: DICK CARTER
Year built: 1979
Stability index: 121.2

Velocity Prediction

Polar CSV

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

6,42.4,5.010459,52,5.57,60,5.84,75,6.01,90,5.91,110,5.85,120,5.73,135,5.16,144.2,4.685205,150,4.39
8,40.6,5.781859,52,6.45,60,6.66,75,6.8,90,6.76,110,6.89,120,6.81,135,6.37,147.9,5.630831,150,5.51
10,39.6,6.229614,52,6.9,60,7.07,75,7.21,90,7.22,110,7.41,120,7.38,135,7.13,148.2,6.577301,150,6.45
12,39,6.42093,52,7.09,60,7.27,75,7.44,90,7.5,110,7.71,120,7.75,135,7.57,149.6,7.072352,150,7.05
14,38.7,6.522042,52,7.19,60,7.37,75,7.59,90,7.7,110,7.91,120,8.04,135,7.92,150,7.38,151.4,7.289435
16,38.2,6.553356,52,7.24,60,7.43,75,7.68,90,7.85,110,8.07,120,8.31,135,8.25,150,7.64,173.6,6.943271
20,38.4,6.596967,52,7.29,60,7.49,75,7.8,90,8.08,110,8.35,120,8.71,135,9,150,8.12,176.8,7.591837

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	5.57	5.84	6.01	5.91	5.85	5.73	5.16	4.39
8	6.45	6.66	6.8	6.76	6.89	6.81	6.37	5.51
10	6.9	7.07	7.21	7.22	7.41	7.38	7.13	6.45
12	7.09	7.27	7.44	7.5	7.71	7.75	7.57	7.05
14	7.19	7.37	7.59	7.7	7.91	8.04	7.92	7.38
16	7.24	7.43	7.68	7.85	8.07	8.31	8.25	7.64
20	7.29	7.49	7.8	8.08	8.35	8.71	9	8.12

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42.4°	3.7	144.2°	3.8
8	40.6°	4.39	147.9°	4.77
10	39.6°	4.8	148.2°	5.59
12	39°	4.99	149.6°	6.1
14	38.7°	5.09	151.4°	6.4
16	38.2°	5.15	173.6°	6.9
20	38.4°	5.17	176.8°	7.58

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