ORC Certificate for BACK OFF

Rated boat velocities in knots
Wind Velocity	6 kt	8 kt	10 kt	12 kt	14 kt	16 kt	20 kt
Beat Angles	42.8°	40.5°	39.0°	38.3°	37.9°	37.9°	38.5°
Beat VMG	3.79	4.54	4.86	4.99	5.05	5.05	5.08
52°	5.76	6.61	6.87	6.99	7.05	7.08	7.19
60°	6.07	6.78	7.07	7.22	7.30	7.36	7.48
75°	6.30	6.92	7.30	7.58	7.73	7.82	7.91
90°	6.25	6.91	7.34	7.76	8.08	8.29	8.49
110°	5.83	6.85	7.42	7.92	8.25	8.55	9.09
120°	5.68	6.75	7.34	7.94	8.49	8.97	9.79
135°	5.14	6.32	6.98	7.53	8.11	8.77	10.69
150°	4.33	5.42	6.38	7.00	7.50	8.03	9.37
Run VMG	3.75	4.70	5.54	6.22	6.80	7.26	8.25
Gybe Angles	141.3°	148.5°	152.0°	161.0°	180.0°	180.0°	180.0°

Time Allowances in secs/NM
Wind Velocity	6 kt	8 kt	10 kt	12 kt	14 kt	16 kt	20 kt
Beat VMG	949.8	793.2	741.1	721.2	712.6	713.4	708.7
52°	625.2	544.5	523.8	515.1	510.3	508.5	500.8
60°	593.4	530.6	509.0	498.8	492.9	489.2	481.1
75°	571.7	520.6	493.1	474.9	465.6	460.1	455.0
90°	575.8	520.6	490.1	463.9	445.3	434.3	424.2
110°	617.2	525.9	485.4	454.8	436.4	421.0	396.1
120°	633.9	533.5	490.7	453.7	423.9	401.2	367.7
135°	700.0	569.7	515.5	478.2	443.8	410.3	336.8
150°	832.3	663.8	564.1	514.5	480.2	448.4	384.2
Run VMG	961.1	766.5	649.3	579.2	529.6	495.8	436.2
Selected Courses
Windward / Leeward	955.5	779.8	695.2	650.2	621.1	604.6	572.4
All purpose	734.6	617.4	564.5	533.9	512.3	498.4	471.6

Single Number Scoring Options
Course	Time On Distance	Time On Time
Windward / Leeward	673.2	0.8913
All purpose	547.4	1.0961

Custom scoring options for Australia

Single Number	Time On Distance	Time On Time
Triple Number Coastal/Long Distance Low	676.0	0.8876
Triple Number Coastal/Long Distance Medium	545.7	1.0996
Triple Number Coastal/Long Distance High	491.9	1.2198
Triple Number Windward/Leeward Low	867.7	0.6915
Triple Number Windward/Leeward Medium	668.7	0.8972
Triple Number Windward/Leeward High	596.7	1.0056

Custom scoring options for Austria

Single Number	Time On Distance	Time On Time
Coastal/Long Distance	594.6	1.0091
Triple Number Coastal/Long Distance Low	676.0	0.8876
Triple Number Coastal/Long Distance Medium	545.7	1.0996
Triple Number Coastal/Long Distance High	491.9	1.2198
Triple Number Windward/Leeward Low	867.7	0.6915
Triple Number Windward/Leeward Medium	668.7	0.8972
Triple Number Windward/Leeward High	596.7	1.0056

Performance Curve	6 kt	8 kt	10 kt	12 kt	14 kt	16 kt	20 kt
Coastal/Long Distance	956.0	736.3	631.1	569.7	532.5	502.7	450.0

Custom scoring options for Brazil

Single Number	Time On Time
Upwind "bolina"	0.7865
Downwind "popa"	0.9507
70% up, 30% down "Ilhabela"	0.8295
30% up, 70% down "Ilhabela-inverso"	0.8947

Custom scoring options for Bulgaria

Single Number	Time On Distance	Time On Time
Triple Number Coastal/Long Distance Low	676.0	0.8876
Triple Number Coastal/Long Distance Medium	545.7	1.0996
Triple Number Coastal/Long Distance High	491.9	1.2198
Triple Number Windward/Leeward Low	867.7	0.6915
Triple Number Windward/Leeward Medium	668.7	0.8972
Triple Number Windward/Leeward High	596.7	1.0056
Predominantly Upwind	592.5	1.0127
Predominantly Downwind	552.9	1.0852

Custom scoring options for Canada

Single Number	Time On Distance	Time On Time
Triple Number All Purpose Low	676.0	0.8876
Triple Number All Purpose Medium	545.7	1.0996
Triple Number All Purpose High	491.9	1.2198
Triple Number Windward/Leeward Low	867.7	0.6915
Triple Number Windward/Leeward Medium	668.7	0.8972
Triple Number Windward/Leeward High	596.7	1.0056
Predominantly Upwind	592.5	1.0127
Predominantly Downwind	552.9	1.0852
Predominantly Upwind Low	741.2	0.8095
Predominantly Upwind Medium	614.8	0.9760
Predominantly Upwind High	590.5	1.0160
Predominantly Downwind Low	746.3	0.8040
Predominantly Downwind Medium	551.7	1.0876
Predominantly Downwind High	453.6	1.3228
Chicago-Mac Upwind		0.9963
Chicago-Mac All Purpose		1.0294
Chicago-Mac Downwind		1.0664
Bayview-Mac Cove Island		0.9738
Bayview-Mac Shore		0.9816
Victoria-Maui		1.1491

Custom scoring options for Cyprus

Single Number	Time On Distance	Time On Time
Coastal/Long Distance	594.6	1.0091
Triple Number Coastal/Long Distance Low	676.0	0.8876
Triple Number Coastal/Long Distance Medium	545.7	1.0996
Triple Number Coastal/Long Distance High	491.9	1.2198
Triple Number Windward/Leeward Low	867.7	0.6915
Triple Number Windward/Leeward Medium	668.7	0.8972
Triple Number Windward/Leeward High	596.7	1.0056

Performance Curve	6 kt	8 kt	10 kt	12 kt	14 kt	16 kt	20 kt
Coastal/Long Distance	956.0	736.3	631.1	569.7	532.5	502.7	450.0

Custom scoring options for Denmark

Single Number	Time On Distance	Time On Time
Coastal/Long Distance	594.6	1.0091
Triple Number Coastal/Long Distance Low	676.0	0.8876
Triple Number Coastal/Long Distance Medium	545.7	1.0996
Triple Number Coastal/Long Distance High	491.9	1.2198
Triple Number Windward/Leeward Low	867.7	0.6915
Triple Number Windward/Leeward Medium	668.7	0.8972
Triple Number Windward/Leeward High	596.7	1.0056

Performance Curve	6 kt	8 kt	10 kt	12 kt	14 kt	16 kt	20 kt
Coastal/Long Distance	956.0	736.3	631.1	569.7	532.5	502.7	450.0

Custom scoring options for Spain

Single Number	Time On Distance
Coastal/Long Distance	594.6
Triple Number Coastal/Long Distance Low	676.0
Triple Number Coastal/Long Distance Medium	545.7
Triple Number Coastal/Long Distance High	491.9
Triple Number Windward/Leeward Low	867.7
Triple Number Windward/Leeward Medium	668.7
Triple Number Windward/Leeward High	596.7

Performance Curve	6 kt	8 kt	10 kt	12 kt	14 kt	16 kt	20 kt
Coastal/Long Distance	956.0	736.3	631.1	569.7	532.5	502.7	450.0

Custom scoring options for Estonia

Single Number	Time On Distance	Time On Time
Coastal/Long Distance	594.6	1.0091
Triple Number Coastal/Long Distance Low	676.0	0.8876
Triple Number Coastal/Long Distance Medium	545.7	1.0996
Triple Number Coastal/Long Distance High	491.9	1.2198
Triple Number Windward/Leeward Low	867.7	0.6915
Triple Number Windward/Leeward Medium	668.7	0.8972
Triple Number Windward/Leeward High	596.7	1.0056

Performance Curve	6 kt	8 kt	10 kt	12 kt	14 kt	16 kt	20 kt
Coastal/Long Distance	956.0	736.3	631.1	569.7	532.5	502.7	450.0

Custom scoring options for Finland

Single Number	Time On Distance	Time On Time
FinRating (Coastal/Long Distance)	594.6	1.0091
Triple Number Coastal/Long Distance Low	676.0	0.8876
Triple Number Coastal/Long Distance Medium	545.7	1.0996
Triple Number Coastal/Long Distance High	491.9	1.2198
Triple Number Windward/Leeward Low	867.7	0.6915
Triple Number Windward/Leeward Medium	668.7	0.8972
Triple Number Windward/Leeward High	596.7	1.0056

Performance Curve	6 kt	8 kt	10 kt	12 kt	14 kt	16 kt	20 kt
Coastal/Long Distance	956.0	736.3	631.1	569.7	532.5	502.7	450.0

Custom scoring options for France

Single Number	Time On Distance	Time On Time
Triple Number Coastal/Long Distance Low	676.0	0.8876
Triple Number Coastal/Long Distance Medium	545.7	1.0996
Triple Number Coastal/Long Distance High	491.9	1.2198
Triple Number Windward/Leeward Low	867.7	0.6915
Triple Number Windward/Leeward Medium	668.7	0.8972
Triple Number Windward/Leeward High	596.7	1.0056

Custom scoring options for Germany

Single Number	Time On Time
Triple Number Coastal/Long Distance Low	0.8876
Triple Number Coastal/Long Distance Medium	1.0996
Triple Number Coastal/Long Distance High	1.2198
Triple Number Windward/Leeward Low	0.6915
Triple Number Windward/Leeward Medium	0.8972
Triple Number Windward/Leeward High	1.0056

Performance Curve	6 kt	8 kt	10 kt	12 kt	14 kt	16 kt	20 kt
Coastal/Long Distance	956.0	736.3	631.1	569.7	532.5	502.7	450.0

Custom scoring options for Greece

Single Number	Time On Distance	Time On Time
Coastal/Long Distance	594.6	1.0091
Triple Number Coastal/Long Distance Low	676.0	0.8876
Triple Number Coastal/Long Distance Medium	545.7	1.0996
Triple Number Coastal/Long Distance High	491.9	1.2198
Triple Number Windward/Leeward Low	867.7	0.6915
Triple Number Windward/Leeward Medium	668.7	0.8972
Triple Number Windward/Leeward High	596.7	1.0056

Performance Curve	6 kt	8 kt	10 kt	12 kt	14 kt	16 kt	20 kt
Coastal/Long Distance	956.0	736.3	631.1	569.7	532.5	502.7	450.0

Custom scoring options for Hungary

Single Number	Time On Distance	Time On Time
Triple Number Coastal/Long Distance Low	676.0	0.8876
Triple Number Coastal/Long Distance Medium	545.7	1.0996
Triple Number Coastal/Long Distance High	491.9	1.2198
Triple Number Windward/Leeward Low	867.7	0.6915
Triple Number Windward/Leeward Medium	668.7	0.8972
Triple Number Windward/Leeward High	596.7	1.0056

Custom scoring options for Israel

Single Number	Time On Distance	Time On Time
Coastal/Long Distance	594.6	1.0091
Triple Number Coastal/Long Distance Low	676.0	0.8876
Triple Number Coastal/Long Distance Medium	545.7	1.0996
Triple Number Coastal/Long Distance High	491.9	1.2198
Triple Number Windward/Leeward Low	867.7	0.6915
Triple Number Windward/Leeward Medium	668.7	0.8972
Triple Number Windward/Leeward High	596.7	1.0056

Performance Curve	6 kt	8 kt	10 kt	12 kt	14 kt	16 kt	20 kt
Coastal/Long Distance	956.0	736.3	631.1	569.7	532.5	502.7	450.0

Custom scoring options for Italy

Single Number	Time On Distance	Time On Time
Coastal/Long Distance	594.6	1.0091
Triple Number Coastal/Long Distance Low	676.0	0.8876
Triple Number Coastal/Long Distance Medium	545.7	1.0996
Triple Number Coastal/Long Distance High	491.9	1.2198
Triple Number Windward/Leeward Low	867.7	0.6915
Triple Number Windward/Leeward Medium	668.7	0.8972
Triple Number Windward/Leeward High	596.7	1.0056

Performance Curve	6 kt	8 kt	10 kt	12 kt	14 kt	16 kt	20 kt
Coastal/Long Distance	956.0	736.3	631.1	569.7	532.5	502.7	450.0

Custom scoring options for Japan

Single Number	Time On Distance	Time On Time
Triple Number Windward/Leeward Low	867.7	0.6915
Triple Number Windward/Leeward Medium	668.7	0.8972
Triple Number Windward/Leeward High	596.7	1.0056

Performance Curve	6 kt	8 kt	10 kt	12 kt	14 kt	16 kt	20 kt
Coastal/Long Distance	956.0	736.3	631.1	569.7	532.5	502.7	450.0

Custom scoring options for Korea

Single Number	Time On Distance
Triple Number Coastal/Long Distance Low	676.0
Triple Number Coastal/Long Distance Medium	545.7
Triple Number Coastal/Long Distance High	491.9
Triple Number Windward/Leeward Low	867.7
Triple Number Windward/Leeward Medium	668.7
Triple Number Windward/Leeward High	596.7
Predominantly Upwind	592.5
Predominantly Downwind	552.9
Predominantly Reaching	529.4

Custom scoring options for Lithuania

Single Number	Time On Distance	Time On Time
Coastal/Long Distance	594.6	1.0091
Triple Number Coastal/Long Distance Low	676.0	0.8876
Triple Number Coastal/Long Distance Medium	545.7	1.0996
Triple Number Coastal/Long Distance High	491.9	1.2198
Triple Number Windward/Leeward Low	867.7	0.6915
Triple Number Windward/Leeward Medium	668.7	0.8972
Triple Number Windward/Leeward High	596.7	1.0056

Performance Curve	6 kt	8 kt	10 kt	12 kt	14 kt	16 kt	20 kt
Coastal/Long Distance	956.0	736.3	631.1	569.7	532.5	502.7	450.0

Custom scoring options for Netherlands

Single Number	Time On Time
Triple Number Coastal/Long Distance Low	0.8876
Triple Number Coastal/Long Distance Medium	1.0996
Triple Number Coastal/Long Distance High	1.2198
Triple Number Windward/Leeward Low	0.6915
Triple Number Windward/Leeward Medium	0.8972
Triple Number Windward/Leeward High	1.0056
Coastal/Long Distance	1.0091
Predominantly Upwind	1.0127
Predominantly Downwind	1.0852

Custom scoring options for Norway

Single Number	Time On Time
Distanseseilas (NOR-rating ett tall)	1.0091
Tretall Distanseseilas Lite vind	0.8876
Tretall Distanseseilas Mellomvind	1.0996
Tretall Distanseseilas Mye vind	1.2198
Tretall Pølsebane Lite vind	0.6915
Tretall Pølsebane Mellomvind	0.8972
Tretall Pølsebane Mye vind	1.0056

Performance Curve	6 kt	8 kt	10 kt	12 kt	14 kt	16 kt	20 kt
Distanseseilas	956.0	736.3	631.1	569.7	532.5	502.7	450.0

Custom scoring options for Portugal

Single Number	Time On Distance	Time On Time
Triple Number Coastal/Long Distance Low	676.0	0.8876
Triple Number Coastal/Long Distance Medium	545.7	1.0996
Triple Number Coastal/Long Distance High	491.9	1.2198
Triple Number Windward/Leeward Low	867.7	0.6915
Triple Number Windward/Leeward Medium	668.7	0.8972
Triple Number Windward/Leeward High	596.7	1.0056
Coastal/Long Distance	594.6	1.0091

Custom scoring options for Russia

Single Number	Time On Distance	Time On Time
Predominantly Upwind	592.5	1.0127
Predominantly Downwind	552.9	1.0852

Custom scoring options for South Africa

Single Number	Time On Distance	Time On Time
Cape Doctor Inshore	582.1	1.0308
Cape Doctor Coastal	479.7	1.2508
Triple Number Coastal/Long Distance Low	676.0	0.8876
Triple Number Coastal/Long Distance Medium	545.7	1.0996
Triple Number Coastal/Long Distance High	491.9	1.2198
Triple Number Windward/Leeward Low	867.7	0.6915
Triple Number Windward/Leeward Medium	668.7	0.8972
Triple Number Windward/Leeward High	596.7	1.0056

Custom scoring options for Slovenia

Single Number	Time On Time
Triple Number Coastal/Long Distance Low	0.8876
Triple Number Coastal/Long Distance Medium	1.0996
Triple Number Coastal/Long Distance High	1.2198
Triple Number Windward/Leeward Low	0.6915
Triple Number Windward/Leeward Medium	0.8972
Triple Number Windward/Leeward High	1.0056

Custom scoring options for Switzerland

Single Number	Time On Time
Triple Number Coastal/Long Distance Low	0.8876
Triple Number Coastal/Long Distance Medium	1.0996
Triple Number Coastal/Long Distance High	1.2198
Triple Number Windward/Leeward Low	0.6915
Triple Number Windward/Leeward Medium	0.8972
Triple Number Windward/Leeward High	1.0056

Custom scoring options for Sweden

Single Number	Time On Distance	Time On Time
Coastal/Long Distance	594.6	1.0091
Triple Number Coastal/Long Distance Low	676.0	0.8876
Triple Number Coastal/Long Distance Medium	545.7	1.0996
Triple Number Coastal/Long Distance High	491.9	1.2198
Triple Number Windward/Leeward Low	867.7	0.6915
Triple Number Windward/Leeward Medium	668.7	0.8972
Triple Number Windward/Leeward High	596.7	1.0056
Predominantly Upwind	592.5	1.0127
Predominantly Downwind	552.9	1.0852

Performance Curve	6 kt	8 kt	10 kt	12 kt	14 kt	16 kt	20 kt
Coastal/Long Distance	956.0	736.3	631.1	569.7	532.5	502.7	450.0

Custom scoring options for Ukraine

Single Number	Time On Distance	Time On Time
Coastal/Long Distance	594.6	1.0091
Triple Number Coastal/Long Distance Low	676.0	0.8876
Triple Number Coastal/Long Distance Medium	545.7	1.0996
Triple Number Coastal/Long Distance High	491.9	1.2198
Triple Number Windward/Leeward Low	867.7	0.6915
Triple Number Windward/Leeward Medium	668.7	0.8972
Triple Number Windward/Leeward High	596.7	1.0056

Performance Curve	6 kt	8 kt	10 kt	12 kt	14 kt	16 kt	20 kt
Coastal/Long Distance	956.0	736.3	631.1	569.7	532.5	502.7	450.0

Custom scoring options for United States of America

Single Number	Time On Distance	Time On Time
Triple Number All Purpose Low	676.0	0.8876
Triple Number All Purpose Medium	545.7	1.0996
Triple Number All Purpose High	491.9	1.2198
Triple Number Windward/Leeward Low	867.7	0.6915
Triple Number Windward/Leeward Medium	668.7	0.8972
Triple Number Windward/Leeward High	596.7	1.0056
Predominantly Upwind	592.5	1.0127
Predominantly Downwind	552.9	1.0852
Predominantly Upwind Low	741.2	0.8095
Predominantly Upwind Medium	614.8	0.9760
Predominantly Upwind High	590.5	1.0160
Predominantly Downwind Low	746.3	0.8040
Predominantly Downwind Medium	551.7	1.0876
Predominantly Downwind High	453.6	1.3228
Chicago-Mac Upwind		0.9963
Chicago-Mac All Purpose		1.0294
Chicago-Mac Downwind		1.0664
Bayview-Mac Cove Island		0.9738
Bayview-Mac Shore		0.9816
Harvest Moon Regatta	485.3	1.2364
Victoria-Maui		1.1491

5-Band Windward/Leeward	Time On Distance	Time On Time
5-Band Low	0.0	0.5037
5-Band Low / Medium	0.0	0.6019
5-Band Medium	0.0	0.7749
5-Band Medium / High	0.0	0.8839
5-Band High	0.0	0.9209

Club
Certificate
2021

Boat

BACK OFF

USA 10980

APH: 547.4

CDL: 8.403

GPH: 608.5

CertNo: US7600

Club
Certificate
2021

Boat

BACK OFF

USA 10980

Club
Certificate
2021

Boat

BACK OFF

USA 10980

Club
Certificate
2021

Boat

BACK OFF

USA 10980

Club Certificate2021

Boat

BACK OFF

USA 10980

APH: 547.4

CDL: 8.403

GPH: 608.5

CertNo: US7600

Club Certificate2021

Boat

BACK OFF

USA 10980

Club Certificate2021

Boat

BACK OFF

USA 10980

Club Certificate2021

Boat

BACK OFF

USA 10980

Club
Certificate
2021

Club
Certificate
2021

Club
Certificate
2021

Club
Certificate
2021