Mata-mata: ORC Rating

GPH

693.7

OSN

673

LOA

5.55 m

Displacement

470 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5999

Medium

0.7737

High

0.9139

Triple Offshore

Low

0.762

Medium

0.964

High

1.1412

Boat Specifications

Dimensions

Length overall: 5.55 m
Beam: 2.38 m
Draft: 1.5 m
Displacement: 470 kg
Crew weight: 271 kg
Wetted surface: 8.3 m²

Sails

Mainsail: 15.19 m²
Genoa: 6.85 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 34.62 m²

Design

Type: Seascape 18
Builder: ISSA d.o.o
Designer: S. Manuard
Year built: 2007

Performance data

Polar CSV

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

6,42,4.184918,52,4.68,60,4.92,75,5.1,90,5.23,110,5.28,120,5.14,135,4.66,146,4.14939,150,3.97
8,40.1,4.902464,52,5.39,60,5.53,75,5.64,90,5.9,110,6,120,5.87,135,5.51,149.5,5.002152,150,4.98
10,37.1,5.215752,52,5.76,60,5.94,75,6.11,90,6.38,110,6.84,120,6.66,135,6.19,150,5.56,151.5,5.484645
12,36,5.302732,52,5.99,60,6.3,75,6.7,90,6.8,110,7.55,120,7.7,135,6.99,150,6.1,176.5,5.33996
14,36,5.352174,52,6.09,60,6.44,75,7.08,90,7.48,110,8.03,120,8.59,135,7.98,144.5,7.296262,150,6.86
16,35.8,5.375656,52,6.15,60,6.53,75,7.28,90,8.04,110,8.6,120,9.28,135,9.29,143,8.376788,150,7.72
20,36,5.46342,52,6.36,60,6.81,75,7.6,90,8.54,110,10.07,120,10.95,135,12.69,140.2,12.872852,150,11.42

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.68	4.92	5.1	5.23	5.28	5.14	4.66	3.97
8	5.39	5.53	5.64	5.9	6	5.87	5.51	4.98
10	5.76	5.94	6.11	6.38	6.84	6.66	6.19	5.56
12	5.99	6.3	6.7	6.8	7.55	7.7	6.99	6.1
14	6.09	6.44	7.08	7.48	8.03	8.59	7.98	6.86
16	6.15	6.53	7.28	8.04	8.6	9.28	9.29	7.72
20	6.36	6.81	7.6	8.54	10.07	10.95	12.69	11.42

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	42°	3.11	146°	3.44
8	40.1°	3.75	149.5°	4.31
10	37.1°	4.16	151.5°	4.82
12	36°	4.29	176.5°	5.33
14	36°	4.33	144.5°	5.94
16	35.8°	4.36	143°	6.69
20	36°	4.42	140.2°	9.89

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°	4.68	5.39	5.76	5.99	6.09	6.15	6.36
60°	4.92	5.53	5.94	6.30	6.44	6.53	6.81
75°	5.10	5.64	6.11	6.70	7.08	7.28	7.60
90°	5.23	5.90	6.38	6.80	7.48	8.04	8.54
110°	5.28	6.00	6.84	7.55	8.03	8.60	10.07
120°	5.14	5.87	6.66	7.70	8.59	9.28	10.95
135°	4.66	5.51	6.19	6.99	7.98	9.29	12.69
150°	3.97	4.98	5.56	6.10	6.86	7.72	11.42