Club
Certificate
2023

Boat

RIC ET RAC

F-7850

Hellenic Sailing Federation
Offshore Committee
Επιτροπή Ανοικτής Θαλάσσης
Ελληνικής Ιστιοπλοϊκής Ομοσπονδίας
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat Angles44.1°42.0°41.1°40.2°40.0°40.0°40.2°
Beat VMG2.773.363.784.074.254.334.35
52°4.255.045.575.916.116.216.27
60°4.485.275.786.096.276.386.47
75°4.625.445.956.256.446.586.75
90°4.605.536.106.396.546.666.92
110°4.725.686.256.576.807.007.28
120°4.595.576.196.546.817.057.51
135°4.175.145.906.356.666.937.47
150°3.584.555.376.006.386.667.17
Run VMG3.103.954.675.315.856.266.79
Gybe Angles147.5°151.4°154.1°161.0°173.0°178.1°179.0°

APH: 666.9

CDL: 6.586

GPH: 750.6

CertNo: 00600

BOAT
ClassDUFOUR 31DesignerMICHEL DUFOURBuilderDUFOURAge date11/1978Series date11/1978Offset fileH143.BOFData fileF7850
HULL
Length Overall9.363 mMaximum Beam3.166 mDraft1.787 mDisplacement4,643 kgDLR12.1276IMS DivisionCruiser/RacerDynamic Allowance0.700%Age Allowance0.487%
PROPELLER
InstallationShaft non exposedTypeSolid 3 bladesDiameter0.300m
CREW
Maximum weight400 kgMinimum weight300 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail18.9819.25Headsail Luffed27.5827.58Headsail FlyingSymmetric64.4364.43Asymmetric
STORM SAIL AREAS (m²)
Trysail5.74Storm Jib6.84Heavy Weather Jib18.46
SAIL LIMITS
Headsails5 * Woven polyester sails  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  03420002HASIssued on 05/04/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

RIC ET RAC

F-7850

Hellenic Sailing Federation
Offshore Committee
Επιτροπή Ανοικτής Θαλάσσης
Ελληνικής Ιστιοπλοϊκής Ομοσπονδίας
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG1299.31070.5953.5884.1846.7831.5827.1
52°846.6714.8645.8608.8589.3579.5574.0
60°803.0683.4622.6591.2573.8563.9556.6
75°778.5662.2604.7575.8558.6546.8533.1
90°783.2651.6589.9563.0550.6540.2520.1
110°762.7633.4576.1548.0529.1514.4494.8
120°784.7646.5581.6550.1528.7510.6479.3
135°864.0699.9609.8566.5540.6519.6481.7
150°1006.1790.4670.1600.3563.9540.2502.2
Run VMG1161.8911.8770.3677.7615.1575.1530.0
Selected Courses
Windward / Leeward1230.5991.2861.9780.9730.9703.3678.6
All purpose953.1780.8691.5641.0612.0594.7574.4
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward817.70.7337
All purpose666.90.8996
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low867.10.6920
Triple Number Coastal/Long Distance Medium662.30.9060
Triple Number Coastal/Long Distance High591.41.0145
Triple Number Windward/Leeward Low1110.90.5401
Triple Number Windward/Leeward Medium812.90.7381
Triple Number Windward/Leeward High700.90.8560
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance725.30.8273
Triple Number Coastal/Long Distance Low867.10.6920
Triple Number Coastal/Long Distance Medium662.30.9060
Triple Number Coastal/Long Distance High591.41.0145
Triple Number Windward/Leeward Low1110.90.5401
Triple Number Windward/Leeward Medium812.90.7381
Triple Number Windward/Leeward High700.90.8560
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1223.6931.5777.2684.4634.9600.8548.9
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6257
Downwind "popa"0.8013
70% up, 30% down "Ilhabela"0.6697
30% up, 70% down "Ilhabela-inverso"0.7390
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low867.10.6920
Triple Number Coastal/Long Distance Medium662.30.9060
Triple Number Coastal/Long Distance High591.41.0145
Triple Number Windward/Leeward Low1110.90.5401
Triple Number Windward/Leeward Medium812.90.7381
Triple Number Windward/Leeward High700.90.8560
Predominantly Upwind727.90.8242
Predominantly Downwind669.40.8963
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low867.10.6920
Triple Number All Purpose Medium662.30.9060
Triple Number All Purpose High591.41.0145
Triple Number Windward/Leeward Low1110.90.5401
Triple Number Windward/Leeward Medium812.90.7381
Triple Number Windward/Leeward High700.90.8560
Predominantly Upwind727.90.8242
Predominantly Downwind669.40.8963
Predominantly Upwind Low979.60.6125
Predominantly Upwind Medium756.40.7932
Predominantly Upwind High693.20.8656
Predominantly Downwind Low928.20.6464
Predominantly Downwind Medium656.00.9147
Predominantly Downwind High553.41.0841
Chicago-Mac Upwind0.8071
Chicago-Mac All Purpose0.8401
Chicago-Mac Downwind0.8804
Bayview-Mac Cove Island0.7770
Bayview-Mac Shore0.7814
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching633.30.9474
Predominantly Reaching Low784.60.7647
Predominantly Reaching Medium625.60.9591
Predominantly Reaching High554.81.0815
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1212.10.4950
5-Band Low / Medium1014.50.5914
5-Band Medium797.10.7528
5-Band Medium / High710.30.8447
5-Band High682.90.8787
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance725.30.8273
Triple Number Coastal/Long Distance Low867.10.6920
Triple Number Coastal/Long Distance Medium662.30.9060
Triple Number Coastal/Long Distance High591.41.0145
Triple Number Windward/Leeward Low1110.90.5401
Triple Number Windward/Leeward Medium812.90.7381
Triple Number Windward/Leeward High700.90.8560
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1223.6931.5777.2684.4634.9600.8548.9
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance725.30.8273
Triple Number Coastal/Long Distance Low867.10.6920
Triple Number Coastal/Long Distance Medium662.30.9060
Triple Number Coastal/Long Distance High591.41.0145
Triple Number Windward/Leeward Low1110.90.5401
Triple Number Windward/Leeward Medium812.90.7381
Triple Number Windward/Leeward High700.90.8560
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1223.6931.5777.2684.4634.9600.8548.9
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance725.3
Triple Number Coastal/Long Distance Low867.1
Triple Number Coastal/Long Distance Medium662.3
Triple Number Coastal/Long Distance High591.4
Triple Number Windward/Leeward Low1110.9
Triple Number Windward/Leeward Medium812.9
Triple Number Windward/Leeward High700.9
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1223.6931.5777.2684.4634.9600.8548.9
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance725.30.8273
Triple Number Coastal/Long Distance Low867.10.6920
Triple Number Coastal/Long Distance Medium662.30.9060
Triple Number Coastal/Long Distance High591.41.0145
Triple Number Windward/Leeward Low1110.90.5401
Triple Number Windward/Leeward Medium812.90.7381
Triple Number Windward/Leeward High700.90.8560
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1223.6931.5777.2684.4634.9600.8548.9
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)725.30.8273
Triple Number Coastal/Long Distance Low867.10.6920
Triple Number Coastal/Long Distance Medium662.30.9060
Triple Number Coastal/Long Distance High591.41.0145
Triple Number Windward/Leeward Low1110.90.5401
Triple Number Windward/Leeward Medium812.90.7381
Triple Number Windward/Leeward High700.90.8560
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1223.6931.5777.2684.4634.9600.8548.9
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low867.10.6920
Triple Number Coastal/Long Distance Medium662.30.9060
Triple Number Coastal/Long Distance High591.41.0145
Triple Number Windward/Leeward Low1110.90.5401
Triple Number Windward/Leeward Medium812.90.7381
Triple Number Windward/Leeward High700.90.8560
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6920
Triple Number Coastal/Long Distance Medium0.9060
Triple Number Coastal/Long Distance High1.0145
Triple Number Windward/Leeward Low0.5401
Triple Number Windward/Leeward Medium0.7381
Triple Number Windward/Leeward High0.8560
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1223.6931.5777.2684.4634.9600.8548.9
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance725.30.8273
Triple Number Coastal/Long Distance Low867.10.6920
Triple Number Coastal/Long Distance Medium662.30.9060
Triple Number Coastal/Long Distance High591.41.0145
Triple Number Windward/Leeward Low1110.90.5401
Triple Number Windward/Leeward Medium812.90.7381
Triple Number Windward/Leeward High700.90.8560
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1223.6931.5777.2684.4634.9600.8548.9
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low867.10.6920
Triple Number Coastal/Long Distance Medium662.30.9060
Triple Number Coastal/Long Distance High591.41.0145
Triple Number Windward/Leeward Low1110.90.5401
Triple Number Windward/Leeward Medium812.90.7381
Triple Number Windward/Leeward High700.90.8560
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance725.30.8273
Triple Number Coastal/Long Distance Low867.10.6920
Triple Number Coastal/Long Distance Medium662.30.9060
Triple Number Coastal/Long Distance High591.41.0145
Triple Number Windward/Leeward Low1110.90.5401
Triple Number Windward/Leeward Medium812.90.7381
Triple Number Windward/Leeward High700.90.8560
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1223.6931.5777.2684.4634.9600.8548.9
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low1110.90.5401
Triple Number Windward/Leeward Medium812.90.7381
Triple Number Windward/Leeward High700.90.8560
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1223.6931.5777.2684.4634.9600.8548.9
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low867.1
Triple Number Coastal/Long Distance Medium662.3
Triple Number Coastal/Long Distance High591.4
Triple Number Windward/Leeward Low1110.9
Triple Number Windward/Leeward Medium812.9
Triple Number Windward/Leeward High700.9
Predominantly Upwind727.9
Predominantly Downwind669.4
Predominantly Reaching646.3
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance725.30.8273
Triple Number Coastal/Long Distance Low867.10.6920
Triple Number Coastal/Long Distance Medium662.30.9060
Triple Number Coastal/Long Distance High591.41.0145
Triple Number Windward/Leeward Low1110.90.5401
Triple Number Windward/Leeward Medium812.90.7381
Triple Number Windward/Leeward High700.90.8560
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1223.6931.5777.2684.4634.9600.8548.9
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6920
Triple Number Coastal/Long Distance Medium0.9060
Triple Number Coastal/Long Distance High1.0145
Triple Number Windward/Leeward Low0.5401
Triple Number Windward/Leeward Medium0.7381
Triple Number Windward/Leeward High0.8560
Coastal/Long Distance0.8273
Predominantly Upwind0.8242
Predominantly Downwind0.8963
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.6920
Tretall Distanseseilas Mellomvind0.9060
Tretall Distanseseilas Mye vind1.0145
Tretall Pølsebane Lite vind0.5401
Tretall Pølsebane Mellomvind0.7381
Tretall Pølsebane Mye vind0.8560
Distanseseilas ett tall (OSN 8-16kn)0.8273
Distanseseilas ett tall (APH 6-20kn)0.8996
Enkeltall Motvind0.8242
Enkeltall Medvind0.8963
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low867.10.6920
Triple Number Coastal/Long Distance Medium662.30.9060
Triple Number Coastal/Long Distance High591.41.0145
Triple Number Windward/Leeward Low1110.90.5401
Triple Number Windward/Leeward Medium812.90.7381
Triple Number Windward/Leeward High700.90.8560
Coastal/Long Distance725.30.8273
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind727.90.8242
Predominantly Downwind669.40.8963
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore686.00.8746
Cape Doctor Coastal580.51.0336
Triple Number Coastal/Long Distance Low867.10.6920
Triple Number Coastal/Long Distance Medium662.30.9060
Triple Number Coastal/Long Distance High591.41.0145
Triple Number Windward/Leeward Low1110.90.5401
Triple Number Windward/Leeward Medium812.90.7381
Triple Number Windward/Leeward High700.90.8560
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6920
Triple Number Coastal/Long Distance Medium0.9060
Triple Number Coastal/Long Distance High1.0145
Triple Number Windward/Leeward Low0.5401
Triple Number Windward/Leeward Medium0.7381
Triple Number Windward/Leeward High0.8560
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6920
Triple Number Coastal/Long Distance Medium0.9060
Triple Number Coastal/Long Distance High1.0145
Triple Number Windward/Leeward Low0.5401
Triple Number Windward/Leeward Medium0.7381
Triple Number Windward/Leeward High0.8560
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance725.30.8273
Triple Number Coastal/Long Distance Low867.10.6920
Triple Number Coastal/Long Distance Medium662.30.9060
Triple Number Coastal/Long Distance High591.41.0145
Triple Number Windward/Leeward Low1110.90.5401
Triple Number Windward/Leeward Medium812.90.7381
Triple Number Windward/Leeward High700.90.8560
Predominantly Upwind727.90.8242
Predominantly Downwind669.40.8963
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1223.6931.5777.2684.4634.9600.8548.9
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance725.30.8273
Triple Number Coastal/Long Distance Low867.10.6920
Triple Number Coastal/Long Distance Medium662.30.9060
Triple Number Coastal/Long Distance High591.41.0145
Triple Number Windward/Leeward Low1110.90.5401
Triple Number Windward/Leeward Medium812.90.7381
Triple Number Windward/Leeward High700.90.8560
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1223.6931.5777.2684.4634.9600.8548.9
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low867.10.6920
Triple Number All Purpose Medium662.30.9060
Triple Number All Purpose High591.41.0145
Triple Number Windward/Leeward Low1110.90.5401
Triple Number Windward/Leeward Medium812.90.7381
Triple Number Windward/Leeward High700.90.8560
Predominantly Upwind727.90.8242
Predominantly Downwind669.40.8963
Predominantly Upwind Low979.60.6125
Predominantly Upwind Medium756.40.7932
Predominantly Upwind High693.20.8656
Predominantly Downwind Low928.20.6464
Predominantly Downwind Medium656.00.9147
Predominantly Downwind High553.41.0841
Chicago-Mac Upwind0.8071
Chicago-Mac All Purpose0.8401
Chicago-Mac Downwind0.8804
Bayview-Mac Cove Island0.7770
Bayview-Mac Shore0.7814
Harvest Moon Regatta578.01.0381
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy692.20.8669
San Francisco Bay Medium809.10.7415
Predominantly Reaching633.30.9474
Predominantly Reaching Low784.60.7647
Predominantly Reaching Medium625.60.9591
Predominantly Reaching High554.81.0815
Windward/Leeward 60-40 Low1125.70.5330
Windward/Leeward 60-40 Medium847.10.7083
Windward/Leeward 60-40 High746.10.8042
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1212.10.4950
5-Band Low / Medium1014.50.5914
5-Band Medium797.10.7528
5-Band Medium / High710.30.8447
5-Band High682.90.8787
ORC Ref  03420002HASIssued on 05/04/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

RIC ET RAC

F-7850

Hellenic Sailing Federation
Offshore Committee
Επιτροπή Ανοικτής Θαλάσσης
Ελληνικής Ιστιοπλοϊκής Ομοσπονδίας
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassDUFOUR 31Measurement14/05/2001HINPlan reviewHull constructionSolidCarbon RudderNoLight stanchionsNoTrim tabNo
LOA9.363Max. Beam3.166Draft1.787Displacement4,643Wetted area19.75IMS L7.466LSM07.260Acc. length9.363Sink (kg/mm) 13.44
VCGD-0.058VCGM-0.035RM Rated (kg·m) 71.5Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeSolid 3 blades
InstallationShaft non exposedTwin screwNoHydro generatorNo
PRD0.300PBWPIPA0.0054
PSDPHDPHL
PSAESL
RIG
Forestay tensionFixedInner stayNone FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders1Rotating mastNo
P10.150IG11.691ISP11.691MDT10.125MDL10.180MDT20.125MDL20.180TL0.000MWGO
E3.228J3.650BAS1.441FSDFoilSFJ0.000SPL3.775WPLTPSBDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date14/05/2001MeasurerComment
SFFP0.641FFMFF1.196LCFcl5.288SG1.0262
SAFP8.925FAMFA1.002LCFsh5.520HBI1.112
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03420002HASIssued on 05/04/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

RIC ET RAC

F-7850

Hellenic Sailing Federation
Offshore Committee
Επιτροπή Ανοικτής Θαλάσσης
Ελληνικής Ιστιοπλοϊκής Ομοσπονδίας
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentORC0.110.631.152.032.6318.98* Copied from legacy *
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment10.030.591.142.363.645.0311.36NoNo 27.5801/03/201630.060.360.721.522.423.3911.32NoNo 18.1410/03/2018
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentORC11.5911.5911.596.640.0064.43* Copied from legacy *
ORC Ref  03420002HASIssued on 05/04/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org