Non Spin/HSFClub Certificate2025
FrøknaNOR 10455
Norges Seilforbund
Sognsveien 73
0854 OSLO
Rated boat velocities in knots
Wind Velocity 4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat Angles43.7°43.7°41.5°40.1°39.3°38.9°38.8°39.2°40.6°
Beat VMG2.293.193.914.414.684.804.854.874.75
52°3.594.885.826.436.726.856.926.986.94
60°3.835.156.086.636.927.077.157.247.23
75°4.005.356.276.797.107.347.517.707.79
90°3.895.256.216.797.137.437.718.148.39
110°3.314.655.756.547.027.397.768.529.17
120°3.074.365.476.336.887.277.648.449.42
135°2.603.794.885.796.496.967.338.099.00
150°2.173.234.255.155.936.566.997.708.47
Run VMG1.882.803.694.515.285.976.557.318.02
Gybe Angles148.7°148.7°152.8°159.3°174.4°175.5°177.2°178.4°178.0°
APH ToD:616.6CDL: 8.299APH ToT: 0.9731CertNo:8406
BOAT
ClassHansson 31DesignerEdwardsonogHanssBuilderAge date01/2003Series date01/2000Offset fileHANSOON31.OFFData file8406
HULL
Length Overall9.600 mMaximum Beam2.832 mDraft1.780 mDisplacement3,562 kgDLR4.7201IMS DivisionCruiser/RacerDynamic Allowance0.310%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.380m
CREW
Maximum weight300 kg(declared)Minimum weight170 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail26.3626.80Headsail Luffed23.2823.28Headsail FlyingSymmetricAsymmetric
STORM SAIL AREAS (m²)
Trysail7.66Storm Jib6.73Heavy Weather Jib18.17
SAIL LIMITS
Headsails1
✱ One set on the forestay
✱ Zero set flying
Spinnakers0
✱ Spinnaker pole aboard
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.
Non Spin/HSFClub Certificate2025
FrøknaNOR 10455
Norges Seilforbund
Sognsveien 73
0854 OSLO
Time Allowances in secs/NM
Wind Velocity 4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat VMG1569.21129.2921.8816.5768.6750.4741.5739.6757.9
52°1002.4738.2618.4560.2535.6525.3520.1515.9518.6
60°940.0698.6592.0542.9520.5509.1503.4497.5498.0
75°900.6672.9574.2530.3506.7490.7479.3467.4462.1
90°926.2686.0579.5530.6504.6484.4466.8442.4428.9
110°1086.2774.2625.7550.1512.8487.2463.8422.5392.7
120°1170.8825.0657.6568.4523.0495.3471.0426.4382.2
135°1382.5948.9737.1622.2554.4517.2491.4445.0399.8
150°1659.91114.9846.9698.6606.9549.2515.4467.8424.8
Run VMG1918.31287.4975.7798.2682.0602.7549.9492.4448.7
Selected Courses
Windward / Leeward1740.41208.3948.8807.3725.3676.6645.7616.0603.3
All purpose1296.9918.2736.8641.8590.0559.8539.7514.0498.3
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward765.00.7843
All purpose616.60.9731
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low827.50.7251
Triple Number Coastal/Long Distance Medium611.90.9805
Triple Number Coastal/Long Distance High535.11.1213
Triple Number Windward/Leeward Low1078.60.5563
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High642.30.9342
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance675.00.8888
Triple Number Coastal/Long Distance Low827.50.7251
Triple Number Coastal/Long Distance Medium611.90.9805
Triple Number Coastal/Long Distance High535.11.1213
Triple Number Windward/Leeward Low1078.60.5563
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High642.30.9342
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1886.61216.2892.8726.0630.9581.6545.5489.4469.0
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7158
Downwind "popa"0.7795
70% up, 30% down "Ilhabela"0.7338
30% up, 70% down "Ilhabela-inverso"0.7592
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low827.50.7251
Triple Number Coastal/Long Distance Medium611.90.9805
Triple Number Coastal/Long Distance High535.11.1213
Triple Number Windward/Leeward Low1078.60.5563
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High642.30.9342
Predominantly Upwind655.70.9150
Predominantly Downwind645.50.9295
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low827.50.7251
Triple Number AP Medium612.00.9803
Triple Number AP High535.11.1213
Triple Number Windward/Leeward Low1130.90.5305
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High642.30.9342
Single Number Predominant Upwind684.20.8769
Single Number Predominant Reaching617.40.9718
Single Number Predominant Downwind681.10.8809
Predominant Upwind - Low971.00.6179
Predominant Upwind - Low/Med726.10.8263
Predominant Upwind - Medium630.70.9513
Predominant Upwind - Med/High585.11.0254
Predominant Upwind - High568.81.0548
Predominant Downwind Low1067.10.5623
Predominant Downwind Low/Med754.10.7956
Predominant Downwind Medium616.90.9726
Predominant Downwind Med/High534.21.1231
Predominant Downwind High492.71.2179
Predominant Reaching Low898.40.6679
Predominant Reaching Low/Med664.90.9024
Predominant Reaching Medium569.41.0538
Predominant Reaching Med/High514.51.1661
Predominant Reaching High485.61.2356
SA/DSPL Upwind21.20SA/DSPL Downwind21.20
Scoring OptionTODTOT
5-Band Windward/Leeward Low1277.30.4697
5-Band Windward/Leeward Low/Med904.10.6636
5-Band Windward/Leeward Medium742.80.8078
5-Band Windward/Leeward Med/High652.60.9194
5-Band Windward/Leeward High618.90.9694
Windward/Leeward 60-40 Low1259.30.4764
Windward/Leeward 60-40 Low/Med901.80.6653
Windward/Leeward 60-40 Medium751.00.7989
Windward/Leeward 60-40 Med/High671.10.8941
Windward/Leeward 60-40 High643.80.9320
5-Band AP Low935.90.6411
5-Band AP Low/Med708.30.8470
5-Band AP Medium601.60.9973
5-Band AP Med/High543.01.1050
5-Band AP High515.71.1634
5-Band SF Bay Tour - Low1085.60.5527
5-Band SF Bay Tour - Low/Med860.60.6972
5-Band SF Bay Tour - Medium715.80.8382
5-Band SF Bay Tour - Med/High638.60.9396
5-Band SF Bay Tour - High608.90.9854
Chicago-Mac Upwind0.8481
Chicago-Mac All Purpose0.8507
Chicago-Mac Downwind0.8427
Bayview-Mac Cove Island0.5990
Bayview-Mac Shore0.6064
Harvest Moon Regatta529.41.1333
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance675.00.8888
Triple Number Coastal/Long Distance Low827.50.7251
Triple Number Coastal/Long Distance Medium611.90.9805
Triple Number Coastal/Long Distance High535.11.1213
Triple Number Windward/Leeward Low1078.60.5563
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High642.30.9342
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1886.61216.2892.8726.0630.9581.6545.5489.4469.0
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance675.00.8888
Triple Number Coastal/Long Distance Low827.50.7251
Triple Number Coastal/Long Distance Medium611.90.9805
Triple Number Coastal/Long Distance High535.11.1213
Triple Number Windward/Leeward Low1078.60.5563
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High642.30.9342
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1886.61216.2892.8726.0630.9581.6545.5489.4469.0
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance675.0
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1886.61216.2892.8726.0630.9581.6545.5489.4469.0
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low827.50.7251
Triple Number Coastal/Long Distance Medium611.90.9805
Triple Number Coastal/Long Distance High535.11.1213
Triple Number Windward/Leeward Low1078.60.5563
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High642.30.9342
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating675.00.8888
FinRating, kevyt tuuli1259.30.7941
FinRating, kova tuuli518.50.9643
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low827.50.7251
Triple Number Coastal/Long Distance Medium611.90.9805
Triple Number Coastal/Long Distance High535.11.1213
Triple Number Windward/Leeward Low1078.60.5563
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High642.30.9342
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8888
Triple Number Coastal/Long Distance Low0.7251
Triple Number Coastal/Long Distance Medium0.9805
Triple Number Coastal/Long Distance High1.1213
Triple Number Windward/Leeward Low0.5563
Triple Number Windward/Leeward Medium0.7904
Triple Number Windward/Leeward High0.9342
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1886.61216.2892.8726.0630.9581.6545.5489.4469.0
For information
General Purpose Handicap (GPH)699.3
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance675.00.8888
Triple Number Coastal/Long Distance Low827.50.7251
Triple Number Coastal/Long Distance Medium611.90.9805
Triple Number Coastal/Long Distance High535.11.1213
Triple Number Windward/Leeward Low1078.60.5563
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High642.30.9342
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1886.61216.2892.8726.0630.9581.6545.5489.4469.0
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low827.50.7251
Triple Number Coastal/Long Distance Medium611.90.9805
Triple Number Coastal/Long Distance High535.11.1213
Triple Number Windward/Leeward Low1078.60.5563
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High642.30.9342
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance675.00.8888
Triple Number Coastal/Long Distance Low827.50.7251
Triple Number Coastal/Long Distance Medium611.90.9805
Triple Number Coastal/Long Distance High535.11.1213
Triple Number Windward/Leeward Low1078.60.5563
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High642.30.9342
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1886.61216.2892.8726.0630.9581.6545.5489.4469.0
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance675.00.8888
Triple Number Coastal/Long Distance Low827.50.7251
Triple Number Coastal/Long Distance Medium611.90.9805
Triple Number Coastal/Long Distance High535.11.1213
Triple Number Windward/Leeward Low1078.60.5563
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High642.30.9342
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1886.61216.2892.8726.0630.9581.6545.5489.4469.0
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low827.5
Triple Number Coastal/Long Distance Medium611.9
Triple Number Coastal/Long Distance High535.1
Triple Number Windward/Leeward Low1078.6
Triple Number Windward/Leeward Medium759.1
Triple Number Windward/Leeward High642.3
Predominantly Upwind655.7
Predominantly Downwind645.5
Predominantly Reaching607.7
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance675.00.8888
Triple Number Coastal/Long Distance Low827.50.7251
Triple Number Coastal/Long Distance Medium611.90.9805
Triple Number Coastal/Long Distance High535.11.1213
Triple Number Windward/Leeward Low1078.60.5563
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High642.30.9342
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1886.61216.2892.8726.0630.9581.6545.5489.4469.0
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7251
Triple Number Coastal/Long Distance Medium0.9805
Triple Number Coastal/Long Distance High1.1213
Triple Number Windward/Leeward Low0.5563
Triple Number Windward/Leeward Medium0.7904
Triple Number Windward/Leeward High0.9342
Coastal/Long Distance0.8888
Predominantly Upwind0.9150
Predominantly Downwind0.9295
For information
General Purpose Handicap (GPH)699.3
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.9731
Distanseseilas Trippeltall svak vind0.7251
Distanseseilas Trippeltall mellomvind0.9805
Distanseseilas Trippeltall sterk vind1.1213
Pølsebane Trippeltall svak vind0.5563
Pølsebane Trippeltall mellomvind0.7904
Pølsebane Trippeltall sterk vind0.9342
Motvind Singeltall0.9150
Medvind Singeltall0.9295
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low827.50.7251
Triple Number Coastal/Long Distance Medium611.90.9805
Triple Number Coastal/Long Distance High535.11.1213
Triple Number Windward/Leeward Low1078.60.5563
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High642.30.9342
Coastal/Long Distance675.00.8888
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind655.70.9150
Predominantly Downwind645.50.9295
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore607.10.9883
Cape Doctor Coastal503.01.1929
Triple Number Coastal/Long Distance Low827.50.7251
Triple Number Coastal/Long Distance Medium611.90.9805
Triple Number Coastal/Long Distance High535.11.1213
Triple Number Windward/Leeward Low1078.60.5563
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High642.30.9342
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7251
Triple Number Coastal/Long Distance Medium0.9805
Triple Number Coastal/Long Distance High1.1213
Triple Number Windward/Leeward Low0.5563
Triple Number Windward/Leeward Medium0.7904
Triple Number Windward/Leeward High0.9342
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7251
Triple Number Coastal/Long Distance Medium0.9805
Triple Number Coastal/Long Distance High1.1213
Triple Number Windward/Leeward Low0.5563
Triple Number Windward/Leeward Medium0.7904
Triple Number Windward/Leeward High0.9342
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance675.00.8888
Triple Number Coastal/Long Distance Low827.50.7251
Triple Number Coastal/Long Distance Medium611.90.9805
Triple Number Coastal/Long Distance High535.11.1213
Triple Number Windward/Leeward Low1078.60.5563
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High642.30.9342
Predominantly Upwind655.70.9150
Predominantly Downwind645.50.9295
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1886.61216.2892.8726.0630.9581.6545.5489.4469.0
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance675.00.8888
Triple Number Coastal/Long Distance Low827.50.7251
Triple Number Coastal/Long Distance Medium611.90.9805
Triple Number Coastal/Long Distance High535.11.1213
Triple Number Windward/Leeward Low1078.60.5563
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High642.30.9342
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1886.61216.2892.8726.0630.9581.6545.5489.4469.0
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low827.50.7251
Triple Number AP Medium612.00.9803
Triple Number AP High535.11.1213
Triple Number Windward/Leeward Low1130.90.5305
Triple Number Windward/Leeward Medium759.10.7904
Triple Number Windward/Leeward High642.30.9342
Single Number Predominant Upwind684.20.8769
Single Number Predominant Reaching617.40.9718
Single Number Predominant Downwind681.10.8809
Predominant Upwind - Low971.00.6179
Predominant Upwind - Low/Med726.10.8263
Predominant Upwind - Medium630.70.9513
Predominant Upwind - Med/High585.11.0254
Predominant Upwind - High568.81.0548
Predominant Downwind Low1067.10.5623
Predominant Downwind Low/Med754.10.7956
Predominant Downwind Medium616.90.9726
Predominant Downwind Med/High534.21.1231
Predominant Downwind High492.71.2179
Predominant Reaching Low898.40.6679
Predominant Reaching Low/Med664.90.9024
Predominant Reaching Medium569.41.0538
Predominant Reaching Med/High514.51.1661
Predominant Reaching High485.61.2356
SA/DSPL Upwind21.20SA/DSPL Downwind21.20
Scoring OptionTODTOT
5-Band Windward/Leeward Low1277.30.4697
5-Band Windward/Leeward Low/Med904.10.6636
5-Band Windward/Leeward Medium742.80.8078
5-Band Windward/Leeward Med/High652.60.9194
5-Band Windward/Leeward High618.90.9694
Windward/Leeward 60-40 Low1259.30.4764
Windward/Leeward 60-40 Low/Med901.80.6653
Windward/Leeward 60-40 Medium751.00.7989
Windward/Leeward 60-40 Med/High671.10.8941
Windward/Leeward 60-40 High643.80.9320
5-Band AP Low935.90.6411
5-Band AP Low/Med708.30.8470
5-Band AP Medium601.60.9973
5-Band AP Med/High543.01.1050
5-Band AP High515.71.1634
5-Band SF Bay Tour - Low1085.60.5527
5-Band SF Bay Tour - Low/Med860.60.6972
5-Band SF Bay Tour - Medium715.80.8382
5-Band SF Bay Tour - Med/High638.60.9396
5-Band SF Bay Tour - High608.90.9854
Chicago-Mac Upwind0.8481
Chicago-Mac All Purpose0.8507
Chicago-Mac Downwind0.8427
Bayview-Mac Cove Island0.5990
Bayview-Mac Shore0.6064
Harvest Moon Regatta529.41.1333
Non Spin/HSFClub Certificate2025
FrøknaNOR 10455
Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassHansson 31MeasurementHINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA9.600Max. Beam2.832Draft1.780Displacement3,562Wetted area20.23IMS L9.049LSM09.104Acc. length9.204Sink (kg/mm) 14.66
VCGD-0.200VCGM-0.244RM Rated (kg·m) 81.1Limit of positive stability(°) N/AStability IndexN/ADefault crew weight602Declared crew weight300
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.380PBWPIPA0.0037
EDL1.700ST10.070ST20.180
ST30.180ST40.110ST50.300
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerYesMainsail furlerArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders2Rotating mastNo
P11.950IG11.600ISP11.650MDT10.110MDL10.130MDT20.000MDL20.000TL0.000MW0.000GO0.000
E3.660J3.580BAS1.550FSD0.000SFJ0.000SPL3.660WPLTPS3.600BD0.000MWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.200Flotation Date01/01/2015
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Non Spin/HSFClub Certificate2025
FrøknaNOR 10455
Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment365-2012052110580.140.781.452.393.0926.3621/05/2012Ullman Sails ST-Polyester/Technora, 2 rev628-2025060219410.140.751.412.353.0425.9502/06/2025
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment628-2025060219490.050.061.122.062.953.8311.95NoNo 23.2802/06/2025
CRUISER/RACER REQUIREMENTS*
Accommodation length9.2 mTable area0.44 m²Headroom1.64 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity64 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity34 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.