Club Certificate2025
EPI-XDEN 51
Danish Sailing Association
Idrættens Hus
2605 Brøndby
DENMARK
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 Angles43.6°43.6°41.2°39.8°38.8°38.2°37.9°37.9°39.6°
Beat VMG2.543.504.264.795.095.225.295.355.30
52°3.985.356.326.937.237.367.447.527.53
60°4.245.646.587.137.427.567.647.747.75
75°4.425.846.767.277.587.797.948.118.19
90°4.255.726.757.337.607.868.108.458.66
110°4.195.746.887.487.868.188.398.738.97
120°4.045.566.717.397.828.198.559.129.53
135°3.544.976.157.037.567.968.359.2110.34
150°2.924.205.366.357.107.587.958.729.67
Run VMG2.533.644.645.516.266.887.358.078.78
Gybe Angles144.7°144.7°149.4°152.6°158.3°165.7°172.7°177.2°175.9°
APH ToD:549.0CDL: 9.590APH ToT: 1.0930CertNo:37237
BOAT
ClassX-37DesignerJeppesenBuilderX-YachtsAge date01/2005Series date01/2004Offset fileX-37.offData file37327 - X37 . DEN 51 EPI-X
HULL
Length Overall11.345 mMaximum Beam3.470 mDraft2.035 mDisplacement6,920 kgDLR6.8634IMS DivisionCruiser/RacerDynamic Allowance0.230%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.435m
CREW
Maximum weight725 kg(declared)Minimum weight595 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail42.1942.74Headsail Luffed34.1234.12Headsail FlyingSymmetric99.6199.61Asymmetric
STORM SAIL AREAS (m²)
Trysail13.14Storm Jib11.79Heavy Weather Jib31.81
SAIL LIMITS
Headsails5Spinnakers4
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.
Club Certificate2025
EPI-XDEN 51
Danish Sailing Association
Idrættens Hus
2605 Brøndby
DENMARK
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 VMG1419.41028.3845.0750.9707.8689.9680.0672.4679.8
52°904.8672.6569.2519.2497.7488.9483.9478.7478.3
60°849.1637.8546.8505.0485.3475.9471.0465.2464.7
75°815.4616.2532.4494.9474.8461.9453.4444.0439.4
90°847.8629.6533.2490.8473.7457.8444.5426.2415.8
110°858.4626.8523.4481.1457.8440.3428.9412.5401.5
120°891.7647.8536.7487.1460.6439.5420.9394.8377.9
135°1015.7724.4585.2512.2476.5452.5430.9391.0348.1
150°1234.2856.8671.5566.9507.0475.1452.6412.7372.3
Run VMG1425.3989.4775.4653.0574.8523.6489.7446.0409.9
Selected Courses
Windward / Leeward1421.31008.8810.2702.0641.3606.8584.9559.2544.9
All purpose1074.2776.3637.0566.2529.2507.6493.0472.9459.3
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward672.10.8928
All purpose549.01.0930
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low706.60.8491
Triple Number Coastal/Long Distance Medium545.11.1007
Triple Number Coastal/Long Distance High489.11.2267
Triple Number Windward/Leeward Low909.50.6597
Triple Number Windward/Leeward Medium667.00.8996
Triple Number Windward/Leeward High580.71.0332
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance597.11.0049
Triple Number Coastal/Long Distance Low706.60.8491
Triple Number Coastal/Long Distance Medium545.11.1007
Triple Number Coastal/Long Distance High489.11.2267
Triple Number Windward/Leeward Low909.50.6597
Triple Number Windward/Leeward Medium667.00.8996
Triple Number Windward/Leeward High580.71.0332
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1508.61006.9762.6635.1563.9526.6497.9453.3440.0
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7815
Downwind "popa"0.9434
70% up, 30% down "Ilhabela"0.8239
30% up, 70% down "Ilhabela-inverso"0.8882
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low706.60.8491
Triple Number Coastal/Long Distance Medium545.11.1007
Triple Number Coastal/Long Distance High489.11.2267
Triple Number Windward/Leeward Low909.50.6597
Triple Number Windward/Leeward Medium667.00.8996
Triple Number Windward/Leeward High580.71.0332
Predominantly Upwind593.61.0108
Predominantly Downwind557.81.0757
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low706.70.8491
Triple Number AP Medium545.21.1006
Triple Number AP High489.11.2267
Triple Number Windward/Leeward Low950.00.6316
Triple Number Windward/Leeward Medium667.00.8996
Triple Number Windward/Leeward High580.71.0332
Single Number Predominant Upwind617.50.9717
Single Number Predominant Reaching548.21.0945
Single Number Predominant Downwind582.61.0300
Predominant Upwind - Low851.80.7044
Predominant Upwind - Low/Med650.40.9225
Predominant Upwind - Medium574.11.0452
Predominant Upwind - Med/High537.41.1165
Predominant Upwind - High521.91.1496
Predominant Downwind Low856.50.7005
Predominant Downwind Low/Med631.90.9495
Predominant Downwind Medium537.51.1163
Predominant Downwind Med/High480.11.2497
Predominant Downwind High446.81.3429
Predominant Reaching Low761.20.7883
Predominant Reaching Low/Med581.21.0323
Predominant Reaching Medium512.01.1718
Predominant Reaching Med/High471.91.2714
Predominant Reaching High447.91.3396
SA/DSPL Upwind20.88SA/DSPL Downwind38.80
Scoring OptionTODTOT
5-Band Windward/Leeward Low1062.50.5647
5-Band Windward/Leeward Low/Med776.40.7728
5-Band Windward/Leeward Medium655.00.9160
5-Band Windward/Leeward Med/High589.01.0187
5-Band Windward/Leeward High561.21.0692
Windward/Leeward 60-40 Low1066.10.5628
Windward/Leeward 60-40 Low/Med784.80.7645
Windward/Leeward 60-40 Medium668.20.8979
Windward/Leeward 60-40 Med/High607.70.9873
Windward/Leeward 60-40 High583.91.0275
5-Band AP Low781.00.7682
5-Band AP Low/Med616.60.9730
5-Band AP Medium537.71.1160
5-Band AP Med/High495.11.2119
5-Band AP High474.01.2658
5-Band SF Bay Tour - Low915.50.6554
5-Band SF Bay Tour - Low/Med742.70.8078
5-Band SF Bay Tour - Medium633.60.9469
5-Band SF Bay Tour - Med/High576.31.0411
5-Band SF Bay Tour - High550.91.0891
Chicago-Mac Upwind0.9424
Chicago-Mac All Purpose0.9703
Chicago-Mac Downwind0.9926
Bayview-Mac Cove Island0.7090
Bayview-Mac Shore0.7142
Harvest Moon Regatta478.91.2528
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance597.11.0049
Triple Number Coastal/Long Distance Low706.60.8491
Triple Number Coastal/Long Distance Medium545.11.1007
Triple Number Coastal/Long Distance High489.11.2267
Triple Number Windward/Leeward Low909.50.6597
Triple Number Windward/Leeward Medium667.00.8996
Triple Number Windward/Leeward High580.71.0332
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1508.61006.9762.6635.1563.9526.6497.9453.3440.0
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance597.11.0049
Triple Number Coastal/Long Distance Low706.60.8491
Triple Number Coastal/Long Distance Medium545.11.1007
Triple Number Coastal/Long Distance High489.11.2267
Triple Number Windward/Leeward Low909.50.6597
Triple Number Windward/Leeward Medium667.00.8996
Triple Number Windward/Leeward High580.71.0332
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1508.61006.9762.6635.1563.9526.6497.9453.3440.0
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance597.1
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1508.61006.9762.6635.1563.9526.6497.9453.3440.0
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low706.60.8491
Triple Number Coastal/Long Distance Medium545.11.1007
Triple Number Coastal/Long Distance High489.11.2267
Triple Number Windward/Leeward Low909.50.6597
Triple Number Windward/Leeward Medium667.00.8996
Triple Number Windward/Leeward High580.71.0332
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating597.11.0049
FinRating, kevyt tuuli1043.60.9582
FinRating, kova tuuli477.21.0478
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low706.60.8491
Triple Number Coastal/Long Distance Medium545.11.1007
Triple Number Coastal/Long Distance High489.11.2267
Triple Number Windward/Leeward Low909.50.6597
Triple Number Windward/Leeward Medium667.00.8996
Triple Number Windward/Leeward High580.71.0332
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance1.0049
Triple Number Coastal/Long Distance Low0.8491
Triple Number Coastal/Long Distance Medium1.1007
Triple Number Coastal/Long Distance High1.2267
Triple Number Windward/Leeward Low0.6597
Triple Number Windward/Leeward Medium0.8996
Triple Number Windward/Leeward High1.0332
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1508.61006.9762.6635.1563.9526.6497.9453.3440.0
For information
General Purpose Handicap (GPH)616.3
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance597.11.0049
Triple Number Coastal/Long Distance Low706.60.8491
Triple Number Coastal/Long Distance Medium545.11.1007
Triple Number Coastal/Long Distance High489.11.2267
Triple Number Windward/Leeward Low909.50.6597
Triple Number Windward/Leeward Medium667.00.8996
Triple Number Windward/Leeward High580.71.0332
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1508.61006.9762.6635.1563.9526.6497.9453.3440.0
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low706.60.8491
Triple Number Coastal/Long Distance Medium545.11.1007
Triple Number Coastal/Long Distance High489.11.2267
Triple Number Windward/Leeward Low909.50.6597
Triple Number Windward/Leeward Medium667.00.8996
Triple Number Windward/Leeward High580.71.0332
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance597.11.0049
Triple Number Coastal/Long Distance Low706.60.8491
Triple Number Coastal/Long Distance Medium545.11.1007
Triple Number Coastal/Long Distance High489.11.2267
Triple Number Windward/Leeward Low909.50.6597
Triple Number Windward/Leeward Medium667.00.8996
Triple Number Windward/Leeward High580.71.0332
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1508.61006.9762.6635.1563.9526.6497.9453.3440.0
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance597.11.0049
Triple Number Coastal/Long Distance Low706.60.8491
Triple Number Coastal/Long Distance Medium545.11.1007
Triple Number Coastal/Long Distance High489.11.2267
Triple Number Windward/Leeward Low909.50.6597
Triple Number Windward/Leeward Medium667.00.8996
Triple Number Windward/Leeward High580.71.0332
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1508.61006.9762.6635.1563.9526.6497.9453.3440.0
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low706.6
Triple Number Coastal/Long Distance Medium545.1
Triple Number Coastal/Long Distance High489.1
Triple Number Windward/Leeward Low909.5
Triple Number Windward/Leeward Medium667.0
Triple Number Windward/Leeward High580.7
Predominantly Upwind593.6
Predominantly Downwind557.8
Predominantly Reaching536.0
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance597.11.0049
Triple Number Coastal/Long Distance Low706.60.8491
Triple Number Coastal/Long Distance Medium545.11.1007
Triple Number Coastal/Long Distance High489.11.2267
Triple Number Windward/Leeward Low909.50.6597
Triple Number Windward/Leeward Medium667.00.8996
Triple Number Windward/Leeward High580.71.0332
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1508.61006.9762.6635.1563.9526.6497.9453.3440.0
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8491
Triple Number Coastal/Long Distance Medium1.1007
Triple Number Coastal/Long Distance High1.2267
Triple Number Windward/Leeward Low0.6597
Triple Number Windward/Leeward Medium0.8996
Triple Number Windward/Leeward High1.0332
Coastal/Long Distance1.0049
Predominantly Upwind1.0108
Predominantly Downwind1.0757
For information
General Purpose Handicap (GPH)616.3
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0930
Distanseseilas Trippeltall svak vind0.8491
Distanseseilas Trippeltall mellomvind1.1007
Distanseseilas Trippeltall sterk vind1.2267
Pølsebane Trippeltall svak vind0.6597
Pølsebane Trippeltall mellomvind0.8996
Pølsebane Trippeltall sterk vind1.0332
Motvind Singeltall1.0108
Medvind Singeltall1.0757
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low706.60.8491
Triple Number Coastal/Long Distance Medium545.11.1007
Triple Number Coastal/Long Distance High489.11.2267
Triple Number Windward/Leeward Low909.50.6597
Triple Number Windward/Leeward Medium667.00.8996
Triple Number Windward/Leeward High580.71.0332
Coastal/Long Distance597.11.0049
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind593.61.0108
Predominantly Downwind557.81.0757
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore549.21.0926
Cape Doctor Coastal463.41.2949
Triple Number Coastal/Long Distance Low706.60.8491
Triple Number Coastal/Long Distance Medium545.11.1007
Triple Number Coastal/Long Distance High489.11.2267
Triple Number Windward/Leeward Low909.50.6597
Triple Number Windward/Leeward Medium667.00.8996
Triple Number Windward/Leeward High580.71.0332
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8491
Triple Number Coastal/Long Distance Medium1.1007
Triple Number Coastal/Long Distance High1.2267
Triple Number Windward/Leeward Low0.6597
Triple Number Windward/Leeward Medium0.8996
Triple Number Windward/Leeward High1.0332
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8491
Triple Number Coastal/Long Distance Medium1.1007
Triple Number Coastal/Long Distance High1.2267
Triple Number Windward/Leeward Low0.6597
Triple Number Windward/Leeward Medium0.8996
Triple Number Windward/Leeward High1.0332
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance597.11.0049
Triple Number Coastal/Long Distance Low706.60.8491
Triple Number Coastal/Long Distance Medium545.11.1007
Triple Number Coastal/Long Distance High489.11.2267
Triple Number Windward/Leeward Low909.50.6597
Triple Number Windward/Leeward Medium667.00.8996
Triple Number Windward/Leeward High580.71.0332
Predominantly Upwind593.61.0108
Predominantly Downwind557.81.0757
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1508.61006.9762.6635.1563.9526.6497.9453.3440.0
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance597.11.0049
Triple Number Coastal/Long Distance Low706.60.8491
Triple Number Coastal/Long Distance Medium545.11.1007
Triple Number Coastal/Long Distance High489.11.2267
Triple Number Windward/Leeward Low909.50.6597
Triple Number Windward/Leeward Medium667.00.8996
Triple Number Windward/Leeward High580.71.0332
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1508.61006.9762.6635.1563.9526.6497.9453.3440.0
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low706.70.8491
Triple Number AP Medium545.21.1006
Triple Number AP High489.11.2267
Triple Number Windward/Leeward Low950.00.6316
Triple Number Windward/Leeward Medium667.00.8996
Triple Number Windward/Leeward High580.71.0332
Single Number Predominant Upwind617.50.9717
Single Number Predominant Reaching548.21.0945
Single Number Predominant Downwind582.61.0300
Predominant Upwind - Low851.80.7044
Predominant Upwind - Low/Med650.40.9225
Predominant Upwind - Medium574.11.0452
Predominant Upwind - Med/High537.41.1165
Predominant Upwind - High521.91.1496
Predominant Downwind Low856.50.7005
Predominant Downwind Low/Med631.90.9495
Predominant Downwind Medium537.51.1163
Predominant Downwind Med/High480.11.2497
Predominant Downwind High446.81.3429
Predominant Reaching Low761.20.7883
Predominant Reaching Low/Med581.21.0323
Predominant Reaching Medium512.01.1718
Predominant Reaching Med/High471.91.2714
Predominant Reaching High447.91.3396
SA/DSPL Upwind20.88SA/DSPL Downwind38.80
Scoring OptionTODTOT
5-Band Windward/Leeward Low1062.50.5647
5-Band Windward/Leeward Low/Med776.40.7728
5-Band Windward/Leeward Medium655.00.9160
5-Band Windward/Leeward Med/High589.01.0187
5-Band Windward/Leeward High561.21.0692
Windward/Leeward 60-40 Low1066.10.5628
Windward/Leeward 60-40 Low/Med784.80.7645
Windward/Leeward 60-40 Medium668.20.8979
Windward/Leeward 60-40 Med/High607.70.9873
Windward/Leeward 60-40 High583.91.0275
5-Band AP Low781.00.7682
5-Band AP Low/Med616.60.9730
5-Band AP Medium537.71.1160
5-Band AP Med/High495.11.2119
5-Band AP High474.01.2658
5-Band SF Bay Tour - Low915.50.6554
5-Band SF Bay Tour - Low/Med742.70.8078
5-Band SF Bay Tour - Medium633.60.9469
5-Band SF Bay Tour - Med/High576.31.0411
5-Band SF Bay Tour - High550.91.0891
Chicago-Mac Upwind0.9424
Chicago-Mac All Purpose0.9703
Chicago-Mac Downwind0.9926
Bayview-Mac Cove Island0.7090
Bayview-Mac Shore0.7142
Harvest Moon Regatta478.91.2528
Club Certificate2025
EPI-XDEN 51
Danish Sailing Association
Idrættens Hus
2605 Brøndby
DENMARK
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassX-37MeasurementHINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA11.345Max. Beam3.470Draft2.035Displacement6,920Wetted area28.10IMS L10.280LSM010.027Acc. length11.277Sink (kg/mm) 20.78
VCGD0.076VCGM0.050RM Rated (kg·m) 147.3Limit of positive stability(°) N/AStability IndexN/ADefault crew weight691Declared crew weight725
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwYesHydro generatorNo
PRD0.435PBWPIPA0.0015
EDLST1ST2
ST3ST4ST5
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders2Rotating mastNo
P14.750IG15.350ISP15.400MDT10.124MDL10.206MDT2MDL2TL0.810MWGO
E5.090J4.120BAS1.764FSD0.030SFJSPL4.120WPLTPSBDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered147.0Flotation Date11/05/2025
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
EPI-XDEN 51
Danish Sailing Association
Idrættens Hus
2605 Brøndby
DENMARK
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment00.150.921.693.044.0942.19
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment00.081.262.323.344.3715.03NoNo 34.12
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment015.4215.4215.427.837.4499.61015.2215.2215.227.447.1693.65015.2415.2415.247.167.1890.98015.2015.2015.207.087.1089.73
CRUISER/RACER REQUIREMENTS*
Accommodation length11.3 mTable area0.55 m²Headroom1.78 mMinimum number of berths5Personal gear stowage0.20 m³Fresh water capacity133 lMinimum number of seats in cockpit5Food stowage0.30 m³Fuel capacity76 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.