Club
Certificate
Double Handed
2023

Boat

Alfa

NOR 4596

Norges Seilforbund
Sognsveien 73
0854 OSLO
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat Angles43.5°41.2°40.6°40.2°40.0°40.0°40.8°
Beat VMG3.043.684.104.314.394.434.40
52°4.635.476.006.256.356.406.43
60°4.875.706.206.446.556.616.66
75°5.055.886.366.626.796.907.00
90°5.176.086.526.706.897.077.32
110°5.236.196.676.987.237.397.67
120°5.076.076.626.977.287.588.03
135°4.545.566.346.777.127.468.27
150°3.764.815.736.406.797.137.84
Run VMG3.264.174.975.696.256.667.31
Gybe Angles145.1°150.5°152.0°161.0°175.4°179.0°179.0°

APH: 626.8

CDL: 7.293

GPH: 702.0

CertNo: 5567

BOAT
ClassOMEGA 30DesignerRon HollandBuilderAge date01/1983Series date01/1983Offset fileS9209.BOFData file5567
HULL
Length Overall9.400 mMaximum Beam3.004 mDraft1.569 mDisplacement3,683 kgDLR6.4520IMS DivisionCruiser/RacerDynamic Allowance0.260%Age Allowance0.487%
PROPELLER
InstallationShaft non exposedTypeFolding 2 bladesDiameter0.380m
CREW
Maximum weight170 kgMinimum weight120 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail28.2828.87Headsail Luffed16.7316.73Headsail FlyingSymmetric59.1159.11Asymmetric
STORM SAIL AREAS (m²)
Trysail8.36Storm Jib5.63Heavy Weather Jib15.20
SAIL LIMITS
Headsails5  Spinnakers4
STABILITY
Righting MomentN/AStability IndexN/A
The owner and any other person in charge is responsible that boat is complying with her certificate in accordance with RRS 78.1 and ORC Rule 304.
ORC Ref  03440002MEJIssued on 23/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Double Handed
2023

Boat

Alfa

NOR 4596

Norges Seilforbund
Sognsveien 73
0854 OSLO
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG1186.1978.4878.6835.0819.4812.7818.6
52°778.1658.2599.6576.1567.0562.2560.2
60°738.6631.0580.6559.1549.4544.4540.9
75°712.9612.0566.1543.7530.5522.1514.2
90°695.7591.8552.0537.2522.7509.5491.7
110°687.9581.5539.5515.6497.9486.8469.4
120°710.0593.0544.1516.5494.3475.2448.1
135°793.3647.1568.1531.9505.8482.4435.2
150°956.9747.7628.4562.6530.3505.2459.3
Run VMG1104.9863.1724.5632.5575.7540.2492.4
Selected Courses
Windward / Leeward1145.5920.8801.5733.7697.5676.5655.5
All purpose877.0721.2643.9604.2582.5568.1549.7
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward769.70.7795
All purpose626.80.9573
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low799.00.7509
Triple Number Coastal/Long Distance Medium621.80.9650
Triple Number Coastal/Long Distance High564.81.0623
Triple Number Windward/Leeward Low1033.20.5807
Triple Number Windward/Leeward Medium762.90.7865
Triple Number Windward/Leeward High673.90.8904
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance681.80.8801
Triple Number Coastal/Long Distance Low799.00.7509
Triple Number Coastal/Long Distance Medium621.80.9650
Triple Number Coastal/Long Distance High564.81.0623
Triple Number Windward/Leeward Low1033.20.5807
Triple Number Windward/Leeward Medium762.90.7865
Triple Number Windward/Leeward High673.90.8904
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1141.5864.8723.4644.8604.3572.7522.6
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6636
Downwind "popa"0.8513
70% up, 30% down "Ilhabela"0.7106
30% up, 70% down "Ilhabela-inverso"0.7848
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low799.00.7509
Triple Number Coastal/Long Distance Medium621.80.9650
Triple Number Coastal/Long Distance High564.81.0623
Triple Number Windward/Leeward Low1033.20.5807
Triple Number Windward/Leeward Medium762.90.7865
Triple Number Windward/Leeward High673.90.8904
Predominantly Upwind684.00.8772
Predominantly Downwind626.70.9575
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low799.00.7509
Triple Number All Purpose Medium621.80.9650
Triple Number All Purpose High564.81.0623
Triple Number Windward/Leeward Low1033.20.5807
Triple Number Windward/Leeward Medium762.90.7865
Triple Number Windward/Leeward High673.90.8904
Predominantly Upwind684.00.8772
Predominantly Downwind626.70.9575
Predominantly Upwind Low899.20.6673
Predominantly Upwind Medium710.70.8442
Predominantly Upwind High673.10.8914
Predominantly Downwind Low864.90.6937
Predominantly Downwind Medium615.30.9751
Predominantly Downwind High517.71.1591
Chicago-Mac Upwind0.8614
Chicago-Mac All Purpose0.8974
Chicago-Mac Downwind0.9410
Bayview-Mac Cove Island0.8352
Bayview-Mac Shore0.8388
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching593.31.0113
Predominantly Reaching Low718.10.8356
Predominantly Reaching Medium585.21.0252
Predominantly Reaching High524.51.1438
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1128.20.5318
5-Band Low / Medium943.90.6356
5-Band Medium749.80.8002
5-Band Medium / High681.30.8807
5-Band High659.10.9103
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance681.80.8801
Triple Number Coastal/Long Distance Low799.00.7509
Triple Number Coastal/Long Distance Medium621.80.9650
Triple Number Coastal/Long Distance High564.81.0623
Triple Number Windward/Leeward Low1033.20.5807
Triple Number Windward/Leeward Medium762.90.7865
Triple Number Windward/Leeward High673.90.8904
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1141.5864.8723.4644.8604.3572.7522.6
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance681.80.8801
Triple Number Coastal/Long Distance Low799.00.7509
Triple Number Coastal/Long Distance Medium621.80.9650
Triple Number Coastal/Long Distance High564.81.0623
Triple Number Windward/Leeward Low1033.20.5807
Triple Number Windward/Leeward Medium762.90.7865
Triple Number Windward/Leeward High673.90.8904
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1141.5864.8723.4644.8604.3572.7522.6
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance681.8
Triple Number Coastal/Long Distance Low799.0
Triple Number Coastal/Long Distance Medium621.8
Triple Number Coastal/Long Distance High564.8
Triple Number Windward/Leeward Low1033.2
Triple Number Windward/Leeward Medium762.9
Triple Number Windward/Leeward High673.9
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1141.5864.8723.4644.8604.3572.7522.6
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance681.80.8801
Triple Number Coastal/Long Distance Low799.00.7509
Triple Number Coastal/Long Distance Medium621.80.9650
Triple Number Coastal/Long Distance High564.81.0623
Triple Number Windward/Leeward Low1033.20.5807
Triple Number Windward/Leeward Medium762.90.7865
Triple Number Windward/Leeward High673.90.8904
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1141.5864.8723.4644.8604.3572.7522.6
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)681.80.8801
Triple Number Coastal/Long Distance Low799.00.7509
Triple Number Coastal/Long Distance Medium621.80.9650
Triple Number Coastal/Long Distance High564.81.0623
Triple Number Windward/Leeward Low1033.20.5807
Triple Number Windward/Leeward Medium762.90.7865
Triple Number Windward/Leeward High673.90.8904
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1141.5864.8723.4644.8604.3572.7522.6
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low799.00.7509
Triple Number Coastal/Long Distance Medium621.80.9650
Triple Number Coastal/Long Distance High564.81.0623
Triple Number Windward/Leeward Low1033.20.5807
Triple Number Windward/Leeward Medium762.90.7865
Triple Number Windward/Leeward High673.90.8904
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7509
Triple Number Coastal/Long Distance Medium0.9650
Triple Number Coastal/Long Distance High1.0623
Triple Number Windward/Leeward Low0.5807
Triple Number Windward/Leeward Medium0.7865
Triple Number Windward/Leeward High0.8904
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1141.5864.8723.4644.8604.3572.7522.6
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance681.80.8801
Triple Number Coastal/Long Distance Low799.00.7509
Triple Number Coastal/Long Distance Medium621.80.9650
Triple Number Coastal/Long Distance High564.81.0623
Triple Number Windward/Leeward Low1033.20.5807
Triple Number Windward/Leeward Medium762.90.7865
Triple Number Windward/Leeward High673.90.8904
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1141.5864.8723.4644.8604.3572.7522.6
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low799.00.7509
Triple Number Coastal/Long Distance Medium621.80.9650
Triple Number Coastal/Long Distance High564.81.0623
Triple Number Windward/Leeward Low1033.20.5807
Triple Number Windward/Leeward Medium762.90.7865
Triple Number Windward/Leeward High673.90.8904
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance681.80.8801
Triple Number Coastal/Long Distance Low799.00.7509
Triple Number Coastal/Long Distance Medium621.80.9650
Triple Number Coastal/Long Distance High564.81.0623
Triple Number Windward/Leeward Low1033.20.5807
Triple Number Windward/Leeward Medium762.90.7865
Triple Number Windward/Leeward High673.90.8904
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1141.5864.8723.4644.8604.3572.7522.6
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low1033.20.5807
Triple Number Windward/Leeward Medium762.90.7865
Triple Number Windward/Leeward High673.90.8904
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1141.5864.8723.4644.8604.3572.7522.6
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low799.0
Triple Number Coastal/Long Distance Medium621.8
Triple Number Coastal/Long Distance High564.8
Triple Number Windward/Leeward Low1033.2
Triple Number Windward/Leeward Medium762.9
Triple Number Windward/Leeward High673.9
Predominantly Upwind684.0
Predominantly Downwind626.7
Predominantly Reaching604.8
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance681.80.8801
Triple Number Coastal/Long Distance Low799.00.7509
Triple Number Coastal/Long Distance Medium621.80.9650
Triple Number Coastal/Long Distance High564.81.0623
Triple Number Windward/Leeward Low1033.20.5807
Triple Number Windward/Leeward Medium762.90.7865
Triple Number Windward/Leeward High673.90.8904
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1141.5864.8723.4644.8604.3572.7522.6
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7509
Triple Number Coastal/Long Distance Medium0.9650
Triple Number Coastal/Long Distance High1.0623
Triple Number Windward/Leeward Low0.5807
Triple Number Windward/Leeward Medium0.7865
Triple Number Windward/Leeward High0.8904
Coastal/Long Distance0.8801
Predominantly Upwind0.8772
Predominantly Downwind0.9575
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.7509
Tretall Distanseseilas Mellomvind0.9650
Tretall Distanseseilas Mye vind1.0623
Tretall Pølsebane Lite vind0.5807
Tretall Pølsebane Mellomvind0.7865
Tretall Pølsebane Mye vind0.8904
Distanseseilas ett tall (OSN 8-16kn)0.8801
Distanseseilas ett tall (APH 6-20kn)0.9573
Enkeltall Motvind0.8772
Enkeltall Medvind0.9575
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low799.00.7509
Triple Number Coastal/Long Distance Medium621.80.9650
Triple Number Coastal/Long Distance High564.81.0623
Triple Number Windward/Leeward Low1033.20.5807
Triple Number Windward/Leeward Medium762.90.7865
Triple Number Windward/Leeward High673.90.8904
Coastal/Long Distance681.80.8801
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind684.00.8772
Predominantly Downwind626.70.9575
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore661.80.9067
Cape Doctor Coastal555.21.0806
Triple Number Coastal/Long Distance Low799.00.7509
Triple Number Coastal/Long Distance Medium621.80.9650
Triple Number Coastal/Long Distance High564.81.0623
Triple Number Windward/Leeward Low1033.20.5807
Triple Number Windward/Leeward Medium762.90.7865
Triple Number Windward/Leeward High673.90.8904
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7509
Triple Number Coastal/Long Distance Medium0.9650
Triple Number Coastal/Long Distance High1.0623
Triple Number Windward/Leeward Low0.5807
Triple Number Windward/Leeward Medium0.7865
Triple Number Windward/Leeward High0.8904
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7509
Triple Number Coastal/Long Distance Medium0.9650
Triple Number Coastal/Long Distance High1.0623
Triple Number Windward/Leeward Low0.5807
Triple Number Windward/Leeward Medium0.7865
Triple Number Windward/Leeward High0.8904
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance681.80.8801
Triple Number Coastal/Long Distance Low799.00.7509
Triple Number Coastal/Long Distance Medium621.80.9650
Triple Number Coastal/Long Distance High564.81.0623
Triple Number Windward/Leeward Low1033.20.5807
Triple Number Windward/Leeward Medium762.90.7865
Triple Number Windward/Leeward High673.90.8904
Predominantly Upwind684.00.8772
Predominantly Downwind626.70.9575
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1141.5864.8723.4644.8604.3572.7522.6
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance681.80.8801
Triple Number Coastal/Long Distance Low799.00.7509
Triple Number Coastal/Long Distance Medium621.80.9650
Triple Number Coastal/Long Distance High564.81.0623
Triple Number Windward/Leeward Low1033.20.5807
Triple Number Windward/Leeward Medium762.90.7865
Triple Number Windward/Leeward High673.90.8904
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1141.5864.8723.4644.8604.3572.7522.6
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low799.00.7509
Triple Number All Purpose Medium621.80.9650
Triple Number All Purpose High564.81.0623
Triple Number Windward/Leeward Low1033.20.5807
Triple Number Windward/Leeward Medium762.90.7865
Triple Number Windward/Leeward High673.90.8904
Predominantly Upwind684.00.8772
Predominantly Downwind626.70.9575
Predominantly Upwind Low899.20.6673
Predominantly Upwind Medium710.70.8442
Predominantly Upwind High673.10.8914
Predominantly Downwind Low864.90.6937
Predominantly Downwind Medium615.30.9751
Predominantly Downwind High517.71.1591
Chicago-Mac Upwind0.8614
Chicago-Mac All Purpose0.8974
Chicago-Mac Downwind0.9410
Bayview-Mac Cove Island0.8352
Bayview-Mac Shore0.8388
Harvest Moon Regatta542.51.1060
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy664.00.9036
San Francisco Bay Medium758.70.7908
Predominantly Reaching593.31.0113
Predominantly Reaching Low718.10.8356
Predominantly Reaching Medium585.21.0252
Predominantly Reaching High524.51.1438
Windward/Leeward 60-40 Low1043.00.5753
Windward/Leeward 60-40 Medium795.10.7546
Windward/Leeward 60-40 High722.40.8305
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1128.20.5318
5-Band Low / Medium943.90.6356
5-Band Medium749.80.8002
5-Band Medium / High681.30.8807
5-Band High659.10.9103
ORC Ref  03440002MEJIssued on 23/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Double Handed
2023

Boat

Alfa

NOR 4596

Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassOMEGA 30MeasurementHINPlan reviewHull constructionCoredCarbon RudderNoLight stanchionsNoTrim tabNo
LOA9.400Max. Beam3.004Draft1.569Displacement3,683Wetted area19.59IMS L8.189LSM08.295Acc. length9.400Sink (kg/mm) 14.40
VCGD0.020VCGM0.065RM Rated (kg·m) 70.1Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft non exposedTwin screwNoHydro generatorNo
PRD0.380PBWPIPA0.0005
PSDPHDPHL
PSAESL
RIG
Forestay tensionAftInner stayNone FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders0Rotating mastNo
P11.500IG10.550ISP10.550MDT10.110MDL10.160MDT20.100MDL20.120TL0.000MW0.160GO0.180
E4.150J3.500BAS1.430FSD0.000SFJ0.000SPL3.510WPLTPS0.000BDMWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered0.020Flotation Date01/01/2015MeasurerComment
SFFP0.826FFMFF1.020LCFcl5.527SG0.0000
SAFP8.820FAMFA0.870LCFsh5.728HBI0.917
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03440002MEJIssued on 23/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Double Handed
2023

Boat

Alfa

NOR 4596

Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment625-2021082011030.140.811.552.663.5028.2820/08/2021
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment625-2021082011110.050.440.841.622.353.0410.58NoNo 16.7320/08/2021
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment625-20210416175310.9310.9310.936.536.3359.1116/04/2021
ORC Ref  03440002MEJIssued on 23/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org