Non Spin/HSFClub Certificate2025
Grandma BenNOR 15080
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 Angles44.5°44.5°42.2°40.4°39.2°38.5°38.1°38.0°38.9°
Beat VMG2.353.294.064.614.955.115.205.265.22
52°3.735.086.096.737.057.217.307.397.40
60°4.005.396.376.947.247.417.507.607.63
75°4.165.596.577.107.417.627.787.968.05
90°4.035.476.507.107.447.707.928.278.48
110°3.484.866.006.827.317.657.958.539.08
120°3.214.555.696.587.157.527.848.469.13
135°2.703.935.065.996.737.227.578.188.83
150°2.273.334.335.246.026.677.137.768.36
Run VMG1.952.883.804.695.506.226.827.588.19
Gybe Angles144.8°144.8°174.8°177.5°179.3°179.8°179.9°180.0°180.0°
APH ToD:592.0CDL: 9.209APH ToT: 1.0135CertNo:670591
BOAT
ClassScanner 391DesignerOLOFSSONBuilderScan YachtsAge dateSeries date01/1998Offset fileG1131.BOFData file670591
HULL
Length Overall11.720 mMaximum Beam3.618 mDraft1.899 mDisplacement5,787 kgDLR6.2530IMS DivisionCruiser/RacerDynamic Allowance0.280%Age Allowance0.487%
PROPELLER
InstallationIn ApertureTypeFolding 3 bladesDiameter0.400m
CREW
Maximum weight663 kg(default)Minimum weight533 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail39.2939.91Headsail Luffed26.0026.00Headsail FlyingSymmetricAsymmetric
STORM SAIL AREAS (m²)
Trysail11.85Storm Jib9.53Heavy Weather Jib25.71
SAIL LIMITS
Headsails1
✱ One set on the forestay
✱ Zero set flying
Spinnakers0
✱ No 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
Grandma BenNOR 15080
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 VMG1531.41094.5887.5781.5727.3704.5692.6683.8690.3
52°965.8708.5591.4535.3510.5499.0493.3487.3486.7
60°901.1667.8564.8518.9497.4486.1480.1473.4471.8
75°865.2643.9547.7506.8485.9472.3462.9452.3447.4
90°892.5658.2553.8507.4483.9467.7454.4435.4424.4
110°1035.5740.6600.2527.5492.3470.5452.6422.1396.4
120°1119.8791.2632.4547.0503.4478.6459.2425.5394.3
135°1333.7915.3711.1600.7534.6498.5475.9440.1407.8
150°1584.51081.3831.5686.8597.7539.5505.0464.2430.8
Run VMG1850.41248.6947.4767.7655.0578.8527.7474.9439.7
Selected Courses
Windward / Leeward1689.11171.5917.4774.6691.2641.6610.2579.4565.0
All purpose1251.2886.0710.5617.2565.6535.8516.6493.6479.2
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward730.90.8209
All purpose592.01.0135
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low798.30.7516
Triple Number Coastal/Long Distance Medium587.41.0214
Triple Number Coastal/Long Distance High512.81.1701
Triple Number Windward/Leeward Low1044.60.5744
Triple Number Windward/Leeward Medium725.40.8271
Triple Number Windward/Leeward High606.50.9893
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance648.80.9247
Triple Number Coastal/Long Distance Low798.30.7516
Triple Number Coastal/Long Distance Medium587.41.0214
Triple Number Coastal/Long Distance High512.81.1701
Triple Number Windward/Leeward Low1044.60.5744
Triple Number Windward/Leeward Medium725.40.8271
Triple Number Windward/Leeward High606.50.9893
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1832.91179.2863.1698.0604.6556.7523.1474.1457.5
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7538
Downwind "popa"0.8077
70% up, 30% down "Ilhabela"0.7692
30% up, 70% down "Ilhabela-inverso"0.7907
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low798.30.7516
Triple Number Coastal/Long Distance Medium587.41.0214
Triple Number Coastal/Long Distance High512.81.1701
Triple Number Windward/Leeward Low1044.60.5744
Triple Number Windward/Leeward Medium725.40.8271
Triple Number Windward/Leeward High606.50.9893
Predominantly Upwind626.20.9581
Predominantly Downwind620.90.9663
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low798.30.7516
Triple Number AP Medium587.51.0212
Triple Number AP High512.81.1701
Triple Number Windward/Leeward Low1094.90.5480
Triple Number Windward/Leeward Medium725.40.8271
Triple Number Windward/Leeward High606.50.9893
Single Number Predominant Upwind654.00.9175
Single Number Predominant Reaching593.61.0107
Single Number Predominant Downwind655.70.9151
Predominant Upwind - Low937.50.6400
Predominant Upwind - Low/Med696.90.8609
Predominant Upwind - Medium601.50.9975
Predominant Upwind - Med/High555.01.0811
Predominant Upwind - High537.91.1155
Predominant Downwind Low1030.60.5822
Predominant Downwind Low/Med726.60.8258
Predominant Downwind Medium592.41.0128
Predominant Downwind Med/High513.41.1686
Predominant Downwind High476.91.2581
Predominant Reaching Low865.60.6931
Predominant Reaching Low/Med638.70.9394
Predominant Reaching Medium546.11.0987
Predominant Reaching Med/High495.01.2120
Predominant Reaching High470.41.2755
SA/DSPL Upwind20.14SA/DSPL Downwind20.14
Scoring OptionTODTOT
5-Band Windward/Leeward Low1237.90.4847
5-Band Windward/Leeward Low/Med871.10.6888
5-Band Windward/Leeward Medium708.90.8464
5-Band Windward/Leeward Med/High617.10.9723
5-Band Windward/Leeward High582.21.0306
Windward/Leeward 60-40 Low1220.70.4915
Windward/Leeward 60-40 Low/Med868.30.6910
Windward/Leeward 60-40 Medium715.70.8384
Windward/Leeward 60-40 Med/High632.90.9480
Windward/Leeward 60-40 High603.10.9949
5-Band AP Low901.60.6655
5-Band AP Low/Med682.10.8796
5-Band AP Medium577.21.0395
5-Band AP Med/High520.11.1537
5-Band AP High495.11.2120
5-Band SF Bay Tour - Low1051.30.5707
5-Band SF Bay Tour - Low/Med829.60.7232
5-Band SF Bay Tour - Medium684.30.8768
5-Band SF Bay Tour - Med/High605.30.9912
5-Band SF Bay Tour - High575.01.0434
Chicago-Mac Upwind0.8860
Chicago-Mac All Purpose0.8861
Chicago-Mac Downwind0.8753
Bayview-Mac Cove Island0.6213
Bayview-Mac Shore0.6290
Harvest Moon Regatta512.91.1697
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance648.80.9247
Triple Number Coastal/Long Distance Low798.30.7516
Triple Number Coastal/Long Distance Medium587.41.0214
Triple Number Coastal/Long Distance High512.81.1701
Triple Number Windward/Leeward Low1044.60.5744
Triple Number Windward/Leeward Medium725.40.8271
Triple Number Windward/Leeward High606.50.9893
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1832.91179.2863.1698.0604.6556.7523.1474.1457.5
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance648.80.9247
Triple Number Coastal/Long Distance Low798.30.7516
Triple Number Coastal/Long Distance Medium587.41.0214
Triple Number Coastal/Long Distance High512.81.1701
Triple Number Windward/Leeward Low1044.60.5744
Triple Number Windward/Leeward Medium725.40.8271
Triple Number Windward/Leeward High606.50.9893
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1832.91179.2863.1698.0604.6556.7523.1474.1457.5
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance648.8
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1832.91179.2863.1698.0604.6556.7523.1474.1457.5
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low798.30.7516
Triple Number Coastal/Long Distance Medium587.41.0214
Triple Number Coastal/Long Distance High512.81.1701
Triple Number Windward/Leeward Low1044.60.5744
Triple Number Windward/Leeward Medium725.40.8271
Triple Number Windward/Leeward High606.50.9893
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating648.80.9247
FinRating, kevyt tuuli1219.20.8202
FinRating, kova tuuli499.21.0016
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low798.30.7516
Triple Number Coastal/Long Distance Medium587.41.0214
Triple Number Coastal/Long Distance High512.81.1701
Triple Number Windward/Leeward Low1044.60.5744
Triple Number Windward/Leeward Medium725.40.8271
Triple Number Windward/Leeward High606.50.9893
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9247
Triple Number Coastal/Long Distance Low0.7516
Triple Number Coastal/Long Distance Medium1.0214
Triple Number Coastal/Long Distance High1.1701
Triple Number Windward/Leeward Low0.5744
Triple Number Windward/Leeward Medium0.8271
Triple Number Windward/Leeward High0.9893
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1832.91179.2863.1698.0604.6556.7523.1474.1457.5
For information
General Purpose Handicap (GPH)672.1
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance648.80.9247
Triple Number Coastal/Long Distance Low798.30.7516
Triple Number Coastal/Long Distance Medium587.41.0214
Triple Number Coastal/Long Distance High512.81.1701
Triple Number Windward/Leeward Low1044.60.5744
Triple Number Windward/Leeward Medium725.40.8271
Triple Number Windward/Leeward High606.50.9893
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1832.91179.2863.1698.0604.6556.7523.1474.1457.5
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low798.30.7516
Triple Number Coastal/Long Distance Medium587.41.0214
Triple Number Coastal/Long Distance High512.81.1701
Triple Number Windward/Leeward Low1044.60.5744
Triple Number Windward/Leeward Medium725.40.8271
Triple Number Windward/Leeward High606.50.9893
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance648.80.9247
Triple Number Coastal/Long Distance Low798.30.7516
Triple Number Coastal/Long Distance Medium587.41.0214
Triple Number Coastal/Long Distance High512.81.1701
Triple Number Windward/Leeward Low1044.60.5744
Triple Number Windward/Leeward Medium725.40.8271
Triple Number Windward/Leeward High606.50.9893
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1832.91179.2863.1698.0604.6556.7523.1474.1457.5
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance648.80.9247
Triple Number Coastal/Long Distance Low798.30.7516
Triple Number Coastal/Long Distance Medium587.41.0214
Triple Number Coastal/Long Distance High512.81.1701
Triple Number Windward/Leeward Low1044.60.5744
Triple Number Windward/Leeward Medium725.40.8271
Triple Number Windward/Leeward High606.50.9893
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1832.91179.2863.1698.0604.6556.7523.1474.1457.5
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low798.3
Triple Number Coastal/Long Distance Medium587.4
Triple Number Coastal/Long Distance High512.8
Triple Number Windward/Leeward Low1044.6
Triple Number Windward/Leeward Medium725.4
Triple Number Windward/Leeward High606.5
Predominantly Upwind626.2
Predominantly Downwind620.9
Predominantly Reaching584.2
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance648.80.9247
Triple Number Coastal/Long Distance Low798.30.7516
Triple Number Coastal/Long Distance Medium587.41.0214
Triple Number Coastal/Long Distance High512.81.1701
Triple Number Windward/Leeward Low1044.60.5744
Triple Number Windward/Leeward Medium725.40.8271
Triple Number Windward/Leeward High606.50.9893
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1832.91179.2863.1698.0604.6556.7523.1474.1457.5
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7516
Triple Number Coastal/Long Distance Medium1.0214
Triple Number Coastal/Long Distance High1.1701
Triple Number Windward/Leeward Low0.5744
Triple Number Windward/Leeward Medium0.8271
Triple Number Windward/Leeward High0.9893
Coastal/Long Distance0.9247
Predominantly Upwind0.9581
Predominantly Downwind0.9663
For information
General Purpose Handicap (GPH)672.1
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0135
Distanseseilas Trippeltall svak vind0.7516
Distanseseilas Trippeltall mellomvind1.0214
Distanseseilas Trippeltall sterk vind1.1701
Pølsebane Trippeltall svak vind0.5744
Pølsebane Trippeltall mellomvind0.8271
Pølsebane Trippeltall sterk vind0.9893
Motvind Singeltall0.9581
Medvind Singeltall0.9663
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low798.30.7516
Triple Number Coastal/Long Distance Medium587.41.0214
Triple Number Coastal/Long Distance High512.81.1701
Triple Number Windward/Leeward Low1044.60.5744
Triple Number Windward/Leeward Medium725.40.8271
Triple Number Windward/Leeward High606.50.9893
Coastal/Long Distance648.80.9247
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind626.20.9581
Predominantly Downwind620.90.9663
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore569.31.0539
Cape Doctor Coastal483.51.2409
Triple Number Coastal/Long Distance Low798.30.7516
Triple Number Coastal/Long Distance Medium587.41.0214
Triple Number Coastal/Long Distance High512.81.1701
Triple Number Windward/Leeward Low1044.60.5744
Triple Number Windward/Leeward Medium725.40.8271
Triple Number Windward/Leeward High606.50.9893
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7516
Triple Number Coastal/Long Distance Medium1.0214
Triple Number Coastal/Long Distance High1.1701
Triple Number Windward/Leeward Low0.5744
Triple Number Windward/Leeward Medium0.8271
Triple Number Windward/Leeward High0.9893
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7516
Triple Number Coastal/Long Distance Medium1.0214
Triple Number Coastal/Long Distance High1.1701
Triple Number Windward/Leeward Low0.5744
Triple Number Windward/Leeward Medium0.8271
Triple Number Windward/Leeward High0.9893
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance648.80.9247
Triple Number Coastal/Long Distance Low798.30.7516
Triple Number Coastal/Long Distance Medium587.41.0214
Triple Number Coastal/Long Distance High512.81.1701
Triple Number Windward/Leeward Low1044.60.5744
Triple Number Windward/Leeward Medium725.40.8271
Triple Number Windward/Leeward High606.50.9893
Predominantly Upwind626.20.9581
Predominantly Downwind620.90.9663
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1832.91179.2863.1698.0604.6556.7523.1474.1457.5
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance648.80.9247
Triple Number Coastal/Long Distance Low798.30.7516
Triple Number Coastal/Long Distance Medium587.41.0214
Triple Number Coastal/Long Distance High512.81.1701
Triple Number Windward/Leeward Low1044.60.5744
Triple Number Windward/Leeward Medium725.40.8271
Triple Number Windward/Leeward High606.50.9893
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1832.91179.2863.1698.0604.6556.7523.1474.1457.5
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low798.30.7516
Triple Number AP Medium587.51.0212
Triple Number AP High512.81.1701
Triple Number Windward/Leeward Low1094.90.5480
Triple Number Windward/Leeward Medium725.40.8271
Triple Number Windward/Leeward High606.50.9893
Single Number Predominant Upwind654.00.9175
Single Number Predominant Reaching593.61.0107
Single Number Predominant Downwind655.70.9151
Predominant Upwind - Low937.50.6400
Predominant Upwind - Low/Med696.90.8609
Predominant Upwind - Medium601.50.9975
Predominant Upwind - Med/High555.01.0811
Predominant Upwind - High537.91.1155
Predominant Downwind Low1030.60.5822
Predominant Downwind Low/Med726.60.8258
Predominant Downwind Medium592.41.0128
Predominant Downwind Med/High513.41.1686
Predominant Downwind High476.91.2581
Predominant Reaching Low865.60.6931
Predominant Reaching Low/Med638.70.9394
Predominant Reaching Medium546.11.0987
Predominant Reaching Med/High495.01.2120
Predominant Reaching High470.41.2755
SA/DSPL Upwind20.14SA/DSPL Downwind20.14
Scoring OptionTODTOT
5-Band Windward/Leeward Low1237.90.4847
5-Band Windward/Leeward Low/Med871.10.6888
5-Band Windward/Leeward Medium708.90.8464
5-Band Windward/Leeward Med/High617.10.9723
5-Band Windward/Leeward High582.21.0306
Windward/Leeward 60-40 Low1220.70.4915
Windward/Leeward 60-40 Low/Med868.30.6910
Windward/Leeward 60-40 Medium715.70.8384
Windward/Leeward 60-40 Med/High632.90.9480
Windward/Leeward 60-40 High603.10.9949
5-Band AP Low901.60.6655
5-Band AP Low/Med682.10.8796
5-Band AP Medium577.21.0395
5-Band AP Med/High520.11.1537
5-Band AP High495.11.2120
5-Band SF Bay Tour - Low1051.30.5707
5-Band SF Bay Tour - Low/Med829.60.7232
5-Band SF Bay Tour - Medium684.30.8768
5-Band SF Bay Tour - Med/High605.30.9912
5-Band SF Bay Tour - High575.01.0434
Chicago-Mac Upwind0.8860
Chicago-Mac All Purpose0.8861
Chicago-Mac Downwind0.8753
Bayview-Mac Cove Island0.6213
Bayview-Mac Shore0.6290
Harvest Moon Regatta512.91.1697
Non Spin/HSFClub Certificate2025
Grandma BenNOR 15080
Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassScanner 391MeasurementHINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA11.720Max. Beam3.618Draft1.899Displacement5,787Wetted area25.81IMS L9.989LSM09.744Acc. length11.716Sink (kg/mm) 19.25
VCGD-0.029VCGM0.017RM Rated (kg·m) 123.3Limit of positive stability(°) N/AStability IndexN/ADefault crew weight663Declared crew weightN/A
PROPELLER
Propeller TypeFolding 3 blades
InstallationIn ApertureTwin screwNoHydro generatorNo
PRD0.400PBWPIPA0.0078
APH0.000APT0.000APB0.000
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerYesMainsail furlerArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders2Rotating mastNo
P14.250IG13.800ISP13.920MDT10.124MDL10.215MDT20.000MDL20.000TLTaperMW0.000GO0.000
E4.750J4.200BAS1.601FSDFoilSFJ0.000SPL0.000WPLTPS0.000BD0.000MWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.029Flotation Date01/01/2015
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Non Spin/HSFClub Certificate2025
Grandma BenNOR 15080
Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment625-2024051411050.180.951.702.963.9039.2914/05/2024
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment625-2024051411110.060.561.122.032.883.6513.31YesNo 26.0014/05/2024
CRUISER/RACER REQUIREMENTS*
Accommodation length11.7 mTable area0.55 m²Headroom1.80 mMinimum number of berths5Personal gear stowage0.20 m³Fresh water capacity142 lMinimum number of seats in cockpit5Food stowage0.30 m³Fuel capacity84 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.