Semiramis: ORC Rating

GPH

695

OSN

672.9

LOA

11.1 m

Displacement

6300 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5599

Medium

0.7803

High

0.9243

Triple Offshore

Low

0.7301

Medium

0.9855

High

1.1263

Boat Specifications

Dimensions

Length overall: 11.1 m
Beam: 3.64 m
Draft: 1.93 m
Displacement: 6300 kg
Crew weight: 615 kg
Wetted surface: 27.36 m²

Sails

Mainsail: 30.23 m²
Genoa: 36.62 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 83.32 m²

Design

Type: Apollo 12
Builder: Dromor
Designer: Judel / Vrolijk
Year built: 1990

Performance data

Polar CSV

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

6,45,4.058793,52,4.48,60,4.79,75,5.02,90,5.01,110,5.07,120,4.88,135,4.36,145,3.906479,150,3.69
8,43.5,4.866453,52,5.4,60,5.73,75,6,90,6.11,110,6.22,120,6,135,5.44,146.2,4.897805,150,4.7
10,42.4,5.470879,52,6.13,60,6.45,75,6.69,90,6.88,110,6.97,120,6.85,135,6.39,146,5.801908,150,5.56
12,42,6.001522,52,6.65,60,6.87,75,7.05,90,7.26,110,7.36,120,7.28,135,7,146.5,6.535667,150,6.29
14,41.2,6.299716,52,6.91,60,7.1,75,7.28,90,7.45,110,7.68,120,7.61,135,7.37,149,6.836472,150,6.77
16,40.5,6.378172,52,7.03,60,7.24,75,7.47,90,7.56,110,8,120,7.97,135,7.69,150,7.11,175,6.404371
20,41.2,6.472493,52,7.08,60,7.32,75,7.72,90,7.97,110,8.41,120,8.65,135,8.39,150,7.62,178,7.184377

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.48	4.79	5.02	5.01	5.07	4.88	4.36	3.69
8	5.4	5.73	6	6.11	6.22	6	5.44	4.7
10	6.13	6.45	6.69	6.88	6.97	6.85	6.39	5.56
12	6.65	6.87	7.05	7.26	7.36	7.28	7	6.29
14	6.91	7.1	7.28	7.45	7.68	7.61	7.37	6.77
16	7.03	7.24	7.47	7.56	8	7.97	7.69	7.11
20	7.08	7.32	7.72	7.97	8.41	8.65	8.39	7.62

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	45°	2.87	145°	3.2
8	43.5°	3.53	146.2°	4.07
10	42.4°	4.04	146°	4.81
12	42°	4.46	146.5°	5.45
14	41.2°	4.74	149°	5.86
16	40.5°	4.85	175°	6.38
20	41.2°	4.87	178°	7.18

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°	4.48	5.40	6.13	6.65	6.91	7.03	7.08
60°	4.79	5.73	6.45	6.87	7.10	7.24	7.32
75°	5.02	6.00	6.69	7.05	7.28	7.47	7.72
90°	5.01	6.11	6.88	7.26	7.45	7.56	7.97
110°	5.07	6.22	6.97	7.36	7.68	8.00	8.41
120°	4.88	6.00	6.85	7.28	7.61	7.97	8.65
135°	4.36	5.44	6.39	7.00	7.37	7.69	8.39
150°	3.69	4.70	5.56	6.29	6.77	7.11	7.62