Drumlyn of the Seas: ORC Rating

GPH

683.5

OSN

659.7

LOA

12.99 m

Displacement

10902 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.614

Medium

0.8949

High

1.0934

Triple Offshore

Low

0.8114

Medium

1.1364

High

1.3348

Boat Specifications

Dimensions

Length overall: 12.99 m
Beam: 4.2 m
Draft: 1.89 m
Displacement: 10902 kg
Crew weight: 750 kg
Wetted surface: 39.11 m²

Sails

Mainsail: 48.68 m²
Genoa: 50.39 m²
Spinnaker: 0 m²
Asymmetric spinnaker: 0 m²

Design

Type: Impression 434
Builder: Elan Yachts
Designer: Rob Humphreys
Year built: 2005

Performance data

Polar CSV

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

6,46.6,4.293485,52,4.66,60,5.04,75,5.37,90,5.35,110,4.84,120,4.56,135,3.93,150,3.31,167.7,2.947662
8,44.9,5.167011,52,5.69,60,6.08,75,6.43,90,6.41,110,6,120,5.67,135,5.04,150,4.35,168.3,3.901053
10,44.1,5.848553,52,6.49,60,6.93,75,7.27,90,7.29,110,6.97,120,6.6,135,5.96,150,5.27,169.3,4.783166
12,44.1,6.447334,52,7.13,60,7.48,75,7.74,90,7.79,110,7.63,120,7.39,135,6.78,150,6.07,170.5,5.566339
14,44.1,6.823312,52,7.45,60,7.76,75,8.01,90,8.09,110,8.01,120,7.86,135,7.45,150,6.81,171.1,6.275559
16,43.6,6.918247,52,7.58,60,7.88,75,8.19,90,8.32,110,8.29,120,8.17,135,7.87,150,7.43,171.7,6.952825
20,43.8,6.969073,52,7.63,60,7.95,75,8.38,90,8.73,110,8.88,120,8.75,135,8.43,150,8.14,176,7.859144

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.66	5.04	5.37	5.35	4.84	4.56	3.93	3.31
8	5.69	6.08	6.43	6.41	6	5.67	5.04	4.35
10	6.49	6.93	7.27	7.29	6.97	6.6	5.96	5.27
12	7.13	7.48	7.74	7.79	7.63	7.39	6.78	6.07
14	7.45	7.76	8.01	8.09	8.01	7.86	7.45	6.81
16	7.58	7.88	8.19	8.32	8.29	8.17	7.87	7.43
20	7.63	7.95	8.38	8.73	8.88	8.75	8.43	8.14

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	46.6°	2.95	167.7°	2.88
8	44.9°	3.66	168.3°	3.82
10	44.1°	4.2	169.3°	4.7
12	44.1°	4.63	170.5°	5.49
14	44.1°	4.9	171.1°	6.2
16	43.6°	5.01	171.7°	6.88
20	43.8°	5.03	176°	7.84

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°	4.66	5.69	6.49	7.13	7.45	7.58	7.63
60°	5.04	6.08	6.93	7.48	7.76	7.88	7.95
75°	5.37	6.43	7.27	7.74	8.01	8.19	8.38
90°	5.35	6.41	7.29	7.79	8.09	8.32	8.73
110°	4.84	6.00	6.97	7.63	8.01	8.29	8.88
120°	4.56	5.67	6.60	7.39	7.86	8.17	8.75
135°	3.93	5.04	5.96	6.78	7.45	7.87	8.43
150°	3.31	4.35	5.27	6.07	6.81	7.43	8.14