Club
Certificate
Non Spinnaker
2023

Boat

JOY IV

NOR 10107

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 Angles43.0°40.6°39.4°38.8°38.8°38.8°39.4°
Beat VMG3.334.024.454.644.724.764.73
52°5.045.926.436.656.746.796.82
60°5.296.146.626.856.957.017.05
75°5.466.296.767.047.227.337.44
90°5.356.246.777.107.357.567.84
110°4.705.776.536.997.337.668.22
120°4.445.536.356.887.247.598.26
135°3.914.985.866.526.967.318.00
150°3.324.345.235.986.576.987.63
Run VMG2.873.764.565.295.956.507.23
Gybe Angles147.5°152.0°157.4°165.8°172.1°177.5°179.0°

APH: 616.3

CDL: 8.160

GPH: 695.0

CertNo: 7624

BOAT
ClassFIRST 31.7 LRDesignerFinotBuilderBeneteauAge date01/2002Series date01/1998Offset filefirst317.offData file7624
HULL
Length Overall9.610 mMaximum Beam3.212 mDraft1.940 mDisplacement3,858 kgDLR5.4995IMS DivisionCruiser/RacerDynamic Allowance0.320%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.380m
CREW
Maximum weight350 kgMinimum weight263 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail25.7626.41Headsail Luffed29.9529.95Headsail FlyingSymmetricAsymmetric
STORM SAIL AREAS (m²)
Trysail7.38Storm Jib7.17Heavy Weather Jib19.34
SAIL LIMITS
Headsails5  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.
ORC Ref  03440002K8KIssued on 02/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Non Spinnaker
2023

Boat

JOY IV

NOR 10107

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 VMG1082.3896.2808.4776.0762.5756.7760.4
52°714.1608.5560.3541.4533.8529.9528.1
60°680.4586.7544.2525.6517.9513.5510.4
75°659.8572.2532.2511.3498.5491.3483.8
90°673.0576.5531.6507.2489.6476.0459.1
110°765.5623.4551.4515.0490.9470.2438.0
120°810.1651.0566.9523.6497.0474.5436.0
135°921.7722.2614.5552.0517.0492.5450.0
150°1085.0829.3688.5602.0548.3516.1471.6
Run VMG1252.8956.5788.7680.0604.9553.9498.0
Selected Courses
Windward / Leeward1167.6926.3798.6728.0683.7655.3629.2
All purpose891.8723.9637.7592.3565.2547.5526.5
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward762.90.7865
All purpose616.30.9735
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low807.90.7427
Triple Number Coastal/Long Distance Medium611.60.9810
Triple Number Coastal/Long Distance High544.11.1028
Triple Number Windward/Leeward Low1046.90.5731
Triple Number Windward/Leeward Medium757.00.7926
Triple Number Windward/Leeward High652.60.9194
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance673.20.8913
Triple Number Coastal/Long Distance Low807.90.7427
Triple Number Coastal/Long Distance Medium611.60.9810
Triple Number Coastal/Long Distance High544.11.1028
Triple Number Windward/Leeward Low1046.90.5731
Triple Number Windward/Leeward Medium757.00.7926
Triple Number Windward/Leeward High652.60.9194
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1176.1873.2719.7633.2587.3553.1501.4
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7189
Downwind "popa"0.7873
70% up, 30% down "Ilhabela"0.7381
30% up, 70% down "Ilhabela-inverso"0.7654
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low807.90.7427
Triple Number Coastal/Long Distance Medium611.60.9810
Triple Number Coastal/Long Distance High544.11.1028
Triple Number Windward/Leeward Low1046.90.5731
Triple Number Windward/Leeward Medium757.00.7926
Triple Number Windward/Leeward High652.60.9194
Predominantly Upwind655.10.9159
Predominantly Downwind641.90.9348
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low807.90.7427
Triple Number All Purpose Medium611.60.9810
Triple Number All Purpose High544.11.1028
Triple Number Windward/Leeward Low1046.90.5731
Triple Number Windward/Leeward Medium757.00.7926
Triple Number Windward/Leeward High652.60.9194
Predominantly Upwind655.10.9159
Predominantly Downwind641.90.9348
Predominantly Upwind Low863.60.6948
Predominantly Upwind Medium666.40.9004
Predominantly Upwind High631.50.9501
Predominantly Downwind Low927.70.6468
Predominantly Downwind Medium645.20.9299
Predominantly Downwind High521.21.1512
Chicago-Mac Upwind0.9000
Chicago-Mac All Purpose0.9068
Chicago-Mac Downwind0.9151
Bayview-Mac Cove Island0.8459
Bayview-Mac Shore0.8630
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching584.51.0265
Predominantly Reaching Low735.90.8153
Predominantly Reaching Medium582.11.0307
Predominantly Reaching High508.51.1799
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1149.00.5222
5-Band Low / Medium951.40.6306
5-Band Medium742.70.8078
5-Band Medium / High661.80.9066
5-Band High633.70.9468
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance673.20.8913
Triple Number Coastal/Long Distance Low807.90.7427
Triple Number Coastal/Long Distance Medium611.60.9810
Triple Number Coastal/Long Distance High544.11.1028
Triple Number Windward/Leeward Low1046.90.5731
Triple Number Windward/Leeward Medium757.00.7926
Triple Number Windward/Leeward High652.60.9194
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1176.1873.2719.7633.2587.3553.1501.4
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance673.20.8913
Triple Number Coastal/Long Distance Low807.90.7427
Triple Number Coastal/Long Distance Medium611.60.9810
Triple Number Coastal/Long Distance High544.11.1028
Triple Number Windward/Leeward Low1046.90.5731
Triple Number Windward/Leeward Medium757.00.7926
Triple Number Windward/Leeward High652.60.9194
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1176.1873.2719.7633.2587.3553.1501.4
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance673.2
Triple Number Coastal/Long Distance Low807.9
Triple Number Coastal/Long Distance Medium611.6
Triple Number Coastal/Long Distance High544.1
Triple Number Windward/Leeward Low1046.9
Triple Number Windward/Leeward Medium757.0
Triple Number Windward/Leeward High652.6
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1176.1873.2719.7633.2587.3553.1501.4
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance673.20.8913
Triple Number Coastal/Long Distance Low807.90.7427
Triple Number Coastal/Long Distance Medium611.60.9810
Triple Number Coastal/Long Distance High544.11.1028
Triple Number Windward/Leeward Low1046.90.5731
Triple Number Windward/Leeward Medium757.00.7926
Triple Number Windward/Leeward High652.60.9194
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1176.1873.2719.7633.2587.3553.1501.4
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)673.20.8913
Triple Number Coastal/Long Distance Low807.90.7427
Triple Number Coastal/Long Distance Medium611.60.9810
Triple Number Coastal/Long Distance High544.11.1028
Triple Number Windward/Leeward Low1046.90.5731
Triple Number Windward/Leeward Medium757.00.7926
Triple Number Windward/Leeward High652.60.9194
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1176.1873.2719.7633.2587.3553.1501.4
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low807.90.7427
Triple Number Coastal/Long Distance Medium611.60.9810
Triple Number Coastal/Long Distance High544.11.1028
Triple Number Windward/Leeward Low1046.90.5731
Triple Number Windward/Leeward Medium757.00.7926
Triple Number Windward/Leeward High652.60.9194
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7427
Triple Number Coastal/Long Distance Medium0.9810
Triple Number Coastal/Long Distance High1.1028
Triple Number Windward/Leeward Low0.5731
Triple Number Windward/Leeward Medium0.7926
Triple Number Windward/Leeward High0.9194
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1176.1873.2719.7633.2587.3553.1501.4
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance673.20.8913
Triple Number Coastal/Long Distance Low807.90.7427
Triple Number Coastal/Long Distance Medium611.60.9810
Triple Number Coastal/Long Distance High544.11.1028
Triple Number Windward/Leeward Low1046.90.5731
Triple Number Windward/Leeward Medium757.00.7926
Triple Number Windward/Leeward High652.60.9194
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1176.1873.2719.7633.2587.3553.1501.4
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low807.90.7427
Triple Number Coastal/Long Distance Medium611.60.9810
Triple Number Coastal/Long Distance High544.11.1028
Triple Number Windward/Leeward Low1046.90.5731
Triple Number Windward/Leeward Medium757.00.7926
Triple Number Windward/Leeward High652.60.9194
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance673.20.8913
Triple Number Coastal/Long Distance Low807.90.7427
Triple Number Coastal/Long Distance Medium611.60.9810
Triple Number Coastal/Long Distance High544.11.1028
Triple Number Windward/Leeward Low1046.90.5731
Triple Number Windward/Leeward Medium757.00.7926
Triple Number Windward/Leeward High652.60.9194
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1176.1873.2719.7633.2587.3553.1501.4
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low1046.90.5731
Triple Number Windward/Leeward Medium757.00.7926
Triple Number Windward/Leeward High652.60.9194
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1176.1873.2719.7633.2587.3553.1501.4
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low807.9
Triple Number Coastal/Long Distance Medium611.6
Triple Number Coastal/Long Distance High544.1
Triple Number Windward/Leeward Low1046.9
Triple Number Windward/Leeward Medium757.0
Triple Number Windward/Leeward High652.6
Predominantly Upwind655.1
Predominantly Downwind641.9
Predominantly Reaching605.6
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance673.20.8913
Triple Number Coastal/Long Distance Low807.90.7427
Triple Number Coastal/Long Distance Medium611.60.9810
Triple Number Coastal/Long Distance High544.11.1028
Triple Number Windward/Leeward Low1046.90.5731
Triple Number Windward/Leeward Medium757.00.7926
Triple Number Windward/Leeward High652.60.9194
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1176.1873.2719.7633.2587.3553.1501.4
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7427
Triple Number Coastal/Long Distance Medium0.9810
Triple Number Coastal/Long Distance High1.1028
Triple Number Windward/Leeward Low0.5731
Triple Number Windward/Leeward Medium0.7926
Triple Number Windward/Leeward High0.9194
Coastal/Long Distance0.8913
Predominantly Upwind0.9159
Predominantly Downwind0.9348
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.7427
Tretall Distanseseilas Mellomvind0.9810
Tretall Distanseseilas Mye vind1.1028
Tretall Pølsebane Lite vind0.5731
Tretall Pølsebane Mellomvind0.7926
Tretall Pølsebane Mye vind0.9194
Distanseseilas ett tall (OSN 8-16kn)0.8913
Distanseseilas ett tall (APH 6-20kn)0.9735
Enkeltall Motvind0.9159
Enkeltall Medvind0.9348
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low807.90.7427
Triple Number Coastal/Long Distance Medium611.60.9810
Triple Number Coastal/Long Distance High544.11.1028
Triple Number Windward/Leeward Low1046.90.5731
Triple Number Windward/Leeward Medium757.00.7926
Triple Number Windward/Leeward High652.60.9194
Coastal/Long Distance673.20.8913
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind655.10.9159
Predominantly Downwind641.90.9348
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore637.00.9419
Cape Doctor Coastal532.81.1261
Triple Number Coastal/Long Distance Low807.90.7427
Triple Number Coastal/Long Distance Medium611.60.9810
Triple Number Coastal/Long Distance High544.11.1028
Triple Number Windward/Leeward Low1046.90.5731
Triple Number Windward/Leeward Medium757.00.7926
Triple Number Windward/Leeward High652.60.9194
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7427
Triple Number Coastal/Long Distance Medium0.9810
Triple Number Coastal/Long Distance High1.1028
Triple Number Windward/Leeward Low0.5731
Triple Number Windward/Leeward Medium0.7926
Triple Number Windward/Leeward High0.9194
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7427
Triple Number Coastal/Long Distance Medium0.9810
Triple Number Coastal/Long Distance High1.1028
Triple Number Windward/Leeward Low0.5731
Triple Number Windward/Leeward Medium0.7926
Triple Number Windward/Leeward High0.9194
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance673.20.8913
Triple Number Coastal/Long Distance Low807.90.7427
Triple Number Coastal/Long Distance Medium611.60.9810
Triple Number Coastal/Long Distance High544.11.1028
Triple Number Windward/Leeward Low1046.90.5731
Triple Number Windward/Leeward Medium757.00.7926
Triple Number Windward/Leeward High652.60.9194
Predominantly Upwind655.10.9159
Predominantly Downwind641.90.9348
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1176.1873.2719.7633.2587.3553.1501.4
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance673.20.8913
Triple Number Coastal/Long Distance Low807.90.7427
Triple Number Coastal/Long Distance Medium611.60.9810
Triple Number Coastal/Long Distance High544.11.1028
Triple Number Windward/Leeward Low1046.90.5731
Triple Number Windward/Leeward Medium757.00.7926
Triple Number Windward/Leeward High652.60.9194
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1176.1873.2719.7633.2587.3553.1501.4
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low807.90.7427
Triple Number All Purpose Medium611.60.9810
Triple Number All Purpose High544.11.1028
Triple Number Windward/Leeward Low1046.90.5731
Triple Number Windward/Leeward Medium757.00.7926
Triple Number Windward/Leeward High652.60.9194
Predominantly Upwind655.10.9159
Predominantly Downwind641.90.9348
Predominantly Upwind Low863.60.6948
Predominantly Upwind Medium666.40.9004
Predominantly Upwind High631.50.9501
Predominantly Downwind Low927.70.6468
Predominantly Downwind Medium645.20.9299
Predominantly Downwind High521.21.1512
Chicago-Mac Upwind0.9000
Chicago-Mac All Purpose0.9068
Chicago-Mac Downwind0.9151
Bayview-Mac Cove Island0.8459
Bayview-Mac Shore0.8630
Harvest Moon Regatta532.11.1277
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy642.10.9344
San Francisco Bay Medium749.20.8008
Predominantly Reaching584.51.0265
Predominantly Reaching Low735.90.8153
Predominantly Reaching Medium582.11.0307
Predominantly Reaching High508.51.1799
Windward/Leeward 60-40 Low1035.40.5795
Windward/Leeward 60-40 Medium769.50.7798
Windward/Leeward 60-40 High689.00.8708
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1149.00.5222
5-Band Low / Medium951.40.6306
5-Band Medium742.70.8078
5-Band Medium / High661.80.9066
5-Band High633.70.9468
ORC Ref  03440002K8KIssued on 02/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Non Spinnaker
2023

Boat

JOY IV

NOR 10107

Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassFIRST 31.7 LRMeasurementHINPlan reviewHull constructionSolidCarbon RudderNoLight stanchionsNoTrim tabNo
LOA9.610Max. Beam3.212Draft1.940Displacement3,858Wetted area20.59IMS L8.914LSM08.884Acc. length9.610Sink (kg/mm) 15.77
VCGD0.220VCGM0.169RM Rated (kg·m) 74.7Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.380PBWPIPA0.0033
EDL2.380ST10.050ST20.170
ST30.170ST40.100ST50.310
RIG
Forestay tensionAftInner stayNone FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders2Rotating mastNo
P10.800IG11.900ISP11.900MDT10.100MDL10.160MDT20.100MDL20.160TL0.000MW0.160GO0.180
E3.900J3.500BAS1.710FSDFoilSFJ0.000SPL3.560WPLTPS0.000BDMWT78.00MCG3.980
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered0.220Flotation Date01/01/2015MeasurerComment
SFFP0.303FFMFF1.151LCFcl5.281SG1.0220
SAFP8.732FAMFA0.971LCFsh5.515HBI1.050
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03440002K8KIssued on 02/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Non Spinnaker
2023

Boat

JOY IV

NOR 10107

Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment336-2021021915140.170.881.562.603.3425.7619/02/2021
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment306-2018110814370.080.641.222.463.785.1511.87NoNo 29.9508/11/2018306-2018110814290.080.500.911.772.653.5011.60NoNo 20.6208/11/2018306-2013052720360.000.000.000.000.002.999.97NoNo 15.1727/05/20134'er
ORC Ref  03440002K8KIssued on 02/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org