Club
Certificate
2023

Boat

ARAOK

ESP-7627_C

RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat Angles44.2°42.7°41.7°40.0°38.4°37.6°37.8°
Beat VMG2.793.393.844.194.444.604.66
52°4.295.135.686.006.216.366.50
60°4.535.365.866.156.356.516.71
75°4.685.516.006.286.506.697.00
90°4.585.546.126.466.716.917.13
110°4.655.636.206.566.877.167.71
120°4.515.506.126.496.817.117.76
135°4.095.075.826.276.606.917.55
150°3.514.495.305.916.306.617.18
Run VMG3.043.894.625.255.796.196.77
Gybe Angles147.5°151.4°154.7°161.0°174.8°179.0°179.0°

APH: 661.1

CDL: 6.558

GPH: 746.2

CertNo: 762701

BOAT
ClassDUFOUR 28DesignerFarouxBuilderDUFOURAge date05/1981Series date01/1980Offset fileE192.BOFData fileE7627_C
HULL
Length Overall8.491 mMaximum Beam3.084 mDraft1.604 mDisplacement2,722 kgDLR8.2213IMS DivisionCruiser/RacerDynamic Allowance0.370%Age Allowance0.487%
PROPELLER
InstallationShaft non exposedTypeSolid 3 bladesDiameter0.300m
CREW
Maximum weight450 kgMinimum weight338 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail16.1416.45Headsail Luffed22.7022.70Headsail FlyingSymmetric37.6945.37Asymmetric
STORM SAIL AREAS (m²)
Trysail4.73Storm Jib5.59Heavy Weather Jib15.10
SAIL LIMITS
Headsails1  Spinnakers4
STABILITY
Righting MomentN/AStability IndexN/A
COMMENTS
MEDIDAS RI
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  03510002AWJIssued on 15/01/2023Valid until 31/12/2023
VPP ver: 2023 1.00 | © ORC | www.orc.org

Club
Certificate
2023

Boat

ARAOK

ESP-7627_C

RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG1291.71061.2936.8859.8811.0783.5773.0
52°839.7702.1633.9599.7579.4565.7554.1
60°794.9671.1614.0585.3566.8552.7536.8
75°769.7653.7600.3573.2554.0538.2514.6
90°785.4650.0588.1557.6536.6521.1505.1
110°774.1639.6580.8549.2524.4503.0466.9
120°798.0654.6588.7554.5528.9506.3464.1
135°880.8709.8619.0574.5545.8521.4477.1
150°1025.8801.6678.7608.7571.1544.9501.2
Run VMG1184.5924.9779.4686.1621.8581.5532.1
Selected Courses
Windward / Leeward1238.1993.1858.1772.9716.4682.5652.5
All purpose957.7780.8689.3636.7602.9580.1553.2
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward808.90.7418
All purpose661.10.9076
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low869.30.6902
Triple Number Coastal/Long Distance Medium657.80.9122
Triple Number Coastal/Long Distance High575.71.0422
Triple Number Windward/Leeward Low1115.70.5378
Triple Number Windward/Leeward Medium805.60.7448
Triple Number Windward/Leeward High679.70.8827
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance719.40.8340
Triple Number Coastal/Long Distance Low869.30.6902
Triple Number Coastal/Long Distance Medium657.80.9122
Triple Number Coastal/Long Distance High575.71.0422
Triple Number Windward/Leeward Low1115.70.5378
Triple Number Windward/Leeward Medium805.60.7448
Triple Number Windward/Leeward High679.70.8827
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1232.7933.3774.5678.9625.0586.5531.9
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6445
Downwind "popa"0.7909
70% up, 30% down "Ilhabela"0.6824
30% up, 70% down "Ilhabela-inverso"0.7404
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low869.30.6902
Triple Number Coastal/Long Distance Medium657.80.9122
Triple Number Coastal/Long Distance High575.71.0422
Triple Number Windward/Leeward Low1115.70.5378
Triple Number Windward/Leeward Medium805.60.7448
Triple Number Windward/Leeward High679.70.8827
Predominantly Upwind716.70.8371
Predominantly Downwind670.80.8944
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low869.30.6902
Triple Number All Purpose Medium657.80.9122
Triple Number All Purpose High575.71.0422
Triple Number Windward/Leeward Low1115.70.5378
Triple Number Windward/Leeward Medium805.60.7448
Triple Number Windward/Leeward High679.70.8827
Predominantly Upwind716.70.8371
Predominantly Downwind670.80.8944
Predominantly Upwind Low976.60.6144
Predominantly Upwind Medium741.50.8091
Predominantly Upwind High663.60.9042
Predominantly Downwind Low937.70.6398
Predominantly Downwind Medium661.00.9077
Predominantly Downwind High551.71.0875
Chicago-Mac Upwind0.8194
Chicago-Mac All Purpose0.8457
Chicago-Mac Downwind0.8784
Bayview-Mac Cove Island0.7794
Bayview-Mac Shore0.7866
Victoria-Maui0.9405
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance719.40.8340
Triple Number Coastal/Long Distance Low869.30.6902
Triple Number Coastal/Long Distance Medium657.80.9122
Triple Number Coastal/Long Distance High575.71.0422
Triple Number Windward/Leeward Low1115.70.5378
Triple Number Windward/Leeward Medium805.60.7448
Triple Number Windward/Leeward High679.70.8827
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1232.7933.3774.5678.9625.0586.5531.9
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance719.40.8340
Triple Number Coastal/Long Distance Low869.30.6902
Triple Number Coastal/Long Distance Medium657.80.9122
Triple Number Coastal/Long Distance High575.71.0422
Triple Number Windward/Leeward Low1115.70.5378
Triple Number Windward/Leeward Medium805.60.7448
Triple Number Windward/Leeward High679.70.8827
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1232.7933.3774.5678.9625.0586.5531.9
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance719.4
Triple Number Coastal/Long Distance Low869.3
Triple Number Coastal/Long Distance Medium657.8
Triple Number Coastal/Long Distance High575.7
Triple Number Windward/Leeward Low1115.7
Triple Number Windward/Leeward Medium805.6
Triple Number Windward/Leeward High679.7
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1232.7933.3774.5678.9625.0586.5531.9
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance719.40.8340
Triple Number Coastal/Long Distance Low869.30.6902
Triple Number Coastal/Long Distance Medium657.80.9122
Triple Number Coastal/Long Distance High575.71.0422
Triple Number Windward/Leeward Low1115.70.5378
Triple Number Windward/Leeward Medium805.60.7448
Triple Number Windward/Leeward High679.70.8827
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1232.7933.3774.5678.9625.0586.5531.9
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)719.40.8340
Triple Number Coastal/Long Distance Low869.30.6902
Triple Number Coastal/Long Distance Medium657.80.9122
Triple Number Coastal/Long Distance High575.71.0422
Triple Number Windward/Leeward Low1115.70.5378
Triple Number Windward/Leeward Medium805.60.7448
Triple Number Windward/Leeward High679.70.8827
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1232.7933.3774.5678.9625.0586.5531.9
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low869.30.6902
Triple Number Coastal/Long Distance Medium657.80.9122
Triple Number Coastal/Long Distance High575.71.0422
Triple Number Windward/Leeward Low1115.70.5378
Triple Number Windward/Leeward Medium805.60.7448
Triple Number Windward/Leeward High679.70.8827
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6902
Triple Number Coastal/Long Distance Medium0.9122
Triple Number Coastal/Long Distance High1.0422
Triple Number Windward/Leeward Low0.5378
Triple Number Windward/Leeward Medium0.7448
Triple Number Windward/Leeward High0.8827
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1232.7933.3774.5678.9625.0586.5531.9
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance719.40.8340
Triple Number Coastal/Long Distance Low869.30.6902
Triple Number Coastal/Long Distance Medium657.80.9122
Triple Number Coastal/Long Distance High575.71.0422
Triple Number Windward/Leeward Low1115.70.5378
Triple Number Windward/Leeward Medium805.60.7448
Triple Number Windward/Leeward High679.70.8827
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1232.7933.3774.5678.9625.0586.5531.9
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low869.30.6902
Triple Number Coastal/Long Distance Medium657.80.9122
Triple Number Coastal/Long Distance High575.71.0422
Triple Number Windward/Leeward Low1115.70.5378
Triple Number Windward/Leeward Medium805.60.7448
Triple Number Windward/Leeward High679.70.8827
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance719.40.8340
Triple Number Coastal/Long Distance Low869.30.6902
Triple Number Coastal/Long Distance Medium657.80.9122
Triple Number Coastal/Long Distance High575.71.0422
Triple Number Windward/Leeward Low1115.70.5378
Triple Number Windward/Leeward Medium805.60.7448
Triple Number Windward/Leeward High679.70.8827
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1232.7933.3774.5678.9625.0586.5531.9
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low1115.70.5378
Triple Number Windward/Leeward Medium805.60.7448
Triple Number Windward/Leeward High679.70.8827
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1232.7933.3774.5678.9625.0586.5531.9
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low869.3
Triple Number Coastal/Long Distance Medium657.8
Triple Number Coastal/Long Distance High575.7
Triple Number Windward/Leeward Low1115.7
Triple Number Windward/Leeward Medium805.6
Triple Number Windward/Leeward High679.7
Predominantly Upwind716.7
Predominantly Downwind670.8
Predominantly Reaching644.4
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance719.40.8340
Triple Number Coastal/Long Distance Low869.30.6902
Triple Number Coastal/Long Distance Medium657.80.9122
Triple Number Coastal/Long Distance High575.71.0422
Triple Number Windward/Leeward Low1115.70.5378
Triple Number Windward/Leeward Medium805.60.7448
Triple Number Windward/Leeward High679.70.8827
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1232.7933.3774.5678.9625.0586.5531.9
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6902
Triple Number Coastal/Long Distance Medium0.9122
Triple Number Coastal/Long Distance High1.0422
Triple Number Windward/Leeward Low0.5378
Triple Number Windward/Leeward Medium0.7448
Triple Number Windward/Leeward High0.8827
Coastal/Long Distance0.8340
Predominantly Upwind0.8371
Predominantly Downwind0.8944
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.6902
Tretall Distanseseilas Mellomvind0.9122
Tretall Distanseseilas Mye vind1.0422
Tretall Pølsebane Lite vind0.5378
Tretall Pølsebane Mellomvind0.7448
Tretall Pølsebane Mye vind0.8827
Distanseseilas ett tall (OSN 8-16kn)0.8340
Distanseseilas ett tall (APH 6-20kn)0.9076
Enkeltall Motvind0.8371
Enkeltall Medvind0.8944
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low869.30.6902
Triple Number Coastal/Long Distance Medium657.80.9122
Triple Number Coastal/Long Distance High575.71.0422
Triple Number Windward/Leeward Low1115.70.5378
Triple Number Windward/Leeward Medium805.60.7448
Triple Number Windward/Leeward High679.70.8827
Coastal/Long Distance719.40.8340
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind716.70.8371
Predominantly Downwind670.80.8944
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore661.50.9070
Cape Doctor Coastal561.31.0689
Triple Number Coastal/Long Distance Low869.30.6902
Triple Number Coastal/Long Distance Medium657.80.9122
Triple Number Coastal/Long Distance High575.71.0422
Triple Number Windward/Leeward Low1115.70.5378
Triple Number Windward/Leeward Medium805.60.7448
Triple Number Windward/Leeward High679.70.8827
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6902
Triple Number Coastal/Long Distance Medium0.9122
Triple Number Coastal/Long Distance High1.0422
Triple Number Windward/Leeward Low0.5378
Triple Number Windward/Leeward Medium0.7448
Triple Number Windward/Leeward High0.8827
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6902
Triple Number Coastal/Long Distance Medium0.9122
Triple Number Coastal/Long Distance High1.0422
Triple Number Windward/Leeward Low0.5378
Triple Number Windward/Leeward Medium0.7448
Triple Number Windward/Leeward High0.8827
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance719.40.8340
Triple Number Coastal/Long Distance Low869.30.6902
Triple Number Coastal/Long Distance Medium657.80.9122
Triple Number Coastal/Long Distance High575.71.0422
Triple Number Windward/Leeward Low1115.70.5378
Triple Number Windward/Leeward Medium805.60.7448
Triple Number Windward/Leeward High679.70.8827
Predominantly Upwind716.70.8371
Predominantly Downwind670.80.8944
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1232.7933.3774.5678.9625.0586.5531.9
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance719.40.8340
Triple Number Coastal/Long Distance Low869.30.6902
Triple Number Coastal/Long Distance Medium657.80.9122
Triple Number Coastal/Long Distance High575.71.0422
Triple Number Windward/Leeward Low1115.70.5378
Triple Number Windward/Leeward Medium805.60.7448
Triple Number Windward/Leeward High679.70.8827
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1232.7933.3774.5678.9625.0586.5531.9
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low869.30.6902
Triple Number All Purpose Medium657.80.9122
Triple Number All Purpose High575.71.0422
Triple Number Windward/Leeward Low1115.70.5378
Triple Number Windward/Leeward Medium805.60.7448
Triple Number Windward/Leeward High679.70.8827
Predominantly Upwind716.70.8371
Predominantly Downwind670.80.8944
Predominantly Upwind Low976.60.6144
Predominantly Upwind Medium741.50.8091
Predominantly Upwind High663.60.9042
Predominantly Downwind Low937.70.6398
Predominantly Downwind Medium661.00.9077
Predominantly Downwind High551.71.0875
Chicago-Mac Upwind0.8194
Chicago-Mac All Purpose0.8457
Chicago-Mac Downwind0.8784
Bayview-Mac Cove Island0.7794
Bayview-Mac Shore0.7866
Harvest Moon Regatta573.51.0463
Victoria-Maui0.9405
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy670.00.8955
San Francisco Bay Medium801.40.7487
Predominantly Reaching0.9538
Predominantly Reaching Low0.7618
Predominantly Reaching Medium0.9616
Predominantly Reaching High1.1021
Windward/Leeward 60-40 Low1127.80.5320
Windward/Leeward 60-40 Medium834.30.7192
Windward/Leeward 60-40 High716.00.8380
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1219.20.4921
5-Band Low / Medium1016.10.5905
5-Band Medium788.40.7610
5-Band Medium / High690.80.8686
5-Band High657.70.9122
ORC Ref  03510002AWJIssued on 15/01/2023Valid until 31/12/2023
VPP ver: 2023 1.00 | © ORC | www.orc.org

Club
Certificate
2023

Boat

ARAOK

ESP-7627_C

RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassDUFOUR 28MeasurementHINPlan reviewHull constructionSolidCarbon RudderNoLight stanchionsNoTrim tabNo
LOA8.491Max. Beam3.084Draft1.604Displacement2,722Wetted area15.43IMS L7.083LSM06.917Acc. length8.491Sink (kg/mm) 11.26
VCGD-0.439VCGM-0.356RM Rated (kg·m) 68.5Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeSolid 3 blades
InstallationShaft non exposedTwin screwNoHydro generatorNo
PRD0.300PBWPIPA0.0054
PSD0.025PHD0.075PHL0.185
PSA17.0°ESL0.180
RIG
Forestay tensionFixedInner stayNone FittedCarbon mastNoHeadsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders1Rotating mastNo
P9.000IG10.573ISP10.600MDT10.100MDL10.110MDT2MDL2TLMWGO
E3.000J3.350BAS1.400FSD0.050SFJSPL3.580WPLTPSBDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered70.0Flotation Date01/01/2010MeasurerComment
SFFP0.531FFMFF1.057LCFcl4.697SG
SAFP7.528FAMFA1.008LCFsh4.930HBI0.976
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03510002AWJIssued on 15/01/2023Valid until 31/12/2023
VPP ver: 2023 1.00 | © ORC | www.orc.org

Club
Certificate
2023

Boat

ARAOK

ESP-7627_C

RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment0010.771.201.8016.14RI
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment0014.559.80NoNo 22.70RI
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment0019.459.459.454.804.7337.69RI
ORC Ref  03510002AWJIssued on 15/01/2023Valid until 31/12/2023
VPP ver: 2023 1.00 | © ORC | www.orc.org