One DesignInternational Certificate2025
SURPRISE ONE DESIGNMNA-1234
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 Angles42.4°42.4°40.4°37.5°36.2°35.7°35.6°36.0°37.4°
Beat VMG2.393.273.944.404.624.704.744.764.69
52°3.704.925.726.116.336.436.496.586.58
60°3.925.145.886.246.496.636.716.846.88
75°4.055.265.976.356.676.927.087.317.44
90°3.885.155.986.446.747.057.357.808.12
110°3.805.116.026.547.027.457.848.449.05
120°3.604.925.886.436.937.448.029.2210.39
135°3.124.355.376.136.607.107.649.1712.38
150°2.543.674.705.576.206.657.118.2010.68
Run VMG2.193.184.074.845.556.056.467.309.25
Gybe Angles146.5°146.5°151.0°153.2°162.2°170.2°171.8°167.6°141.6°
APH ToD:615.2CDL: 7.138APH ToT: 0.9753CertNo:SURPRI
BOAT
ClassSURPRISEDesignerJOUBERT-NIVELTBuilderARCHAMBAULTAge dateSeries date01/1977Offset filesurprise.od.OFFData filesurprise
HULL
Length Overall7.640 mMaximum Beam2.384 mDraft1.576 mDisplacement1,285 kgDLR4.5986IMS DivisionSportboatDynamic Allowance0.040%Age Allowance0.487%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight400 kg(declared)Minimum weight270 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail18.5619.07Headsail Luffed17.0517.05Headsail FlyingSymmetric41.1541.15Asymmetric
STORM SAIL AREAS (m²)
Trysail5.20Storm Jib3.34Heavy Weather Jib9.02
SAIL LIMITS
Headsails5Spinnakers4
STABILITY
Righting Moment27.6 kg·mStability Index98.5
COMMENTS
ONE-DESIGN RULES
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.
One DesignInternational Certificate2025
SURPRISE ONE DESIGNMNA-1234
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 VMG1507.51101.0912.6817.6779.7766.0759.1756.1768.3
52°974.3731.7629.5589.1569.1560.0554.7547.4546.8
60°918.2700.4612.7577.2555.1543.1536.3526.4523.0
75°889.4684.2603.4567.1539.9520.0508.4492.8483.8
90°928.4699.2602.0559.2534.0511.0489.5461.5443.2
110°947.3703.9598.0550.3513.1483.0459.3426.8398.0
120°1000.4731.7612.2560.1519.1483.7449.0390.2346.5
135°1154.6827.0670.6587.7545.1507.3471.4392.4290.7
150°1418.0981.0765.9645.8580.2541.3506.5438.9337.2
Run VMG1642.01132.7883.7743.1649.2595.1557.6493.4389.4
Selected Courses
Windward / Leeward1572.51116.8898.1780.3714.4680.6658.3624.8578.8
All purpose1184.0861.5712.5637.8595.5569.4549.4516.8481.2
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward749.20.8008
All purpose615.20.9753
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low787.00.7624
Triple Number Coastal/Long Distance Medium612.80.9791
Triple Number Coastal/Long Distance High542.21.1067
Triple Number Windward/Leeward Low1007.60.5955
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High651.30.9212
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance667.00.8996
Triple Number Coastal/Long Distance Low787.00.7624
Triple Number Coastal/Long Distance Medium612.80.9791
Triple Number Coastal/Long Distance High542.21.1067
Triple Number Windward/Leeward Low1007.60.5955
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High651.30.9212
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1676.61118.4848.2710.7632.9590.6554.0490.3455.5
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7128
Downwind "popa"0.8309
70% up, 30% down "Ilhabela"0.7446
30% up, 70% down "Ilhabela-inverso"0.7916
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low787.00.7624
Triple Number Coastal/Long Distance Medium612.80.9791
Triple Number Coastal/Long Distance High542.21.1067
Triple Number Windward/Leeward Low1007.60.5955
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High651.30.9212
Predominantly Upwind663.30.9045
Predominantly Downwind629.10.9538
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low787.00.7624
Triple Number AP Medium612.90.9790
Triple Number AP High542.11.1067
Triple Number Windward/Leeward Low1052.40.5701
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High651.30.9212
Single Number Predominant Upwind687.30.8730
Single Number Predominant Reaching613.40.9781
Single Number Predominant Downwind654.20.9172
Predominant Upwind - Low931.80.6439
Predominant Upwind - Low/Med721.80.8312
Predominant Upwind - Medium643.50.9324
Predominant Upwind - Med/High603.00.9950
Predominant Upwind - High580.41.0337
Predominant Downwind Low965.60.6213
Predominant Downwind Low/Med715.20.8389
Predominant Downwind Medium607.80.9872
Predominant Downwind Med/High535.21.1211
Predominant Downwind High478.31.2545
Predominant Reaching Low848.10.7075
Predominant Reaching Low/Med655.20.9157
Predominant Reaching Medium578.11.0379
Predominant Reaching Med/High524.51.1439
Predominant Reaching High483.11.2419
SA/DSPL Upwind30.10SA/DSPL Downwind50.46
Scoring OptionTODTOT
5-Band Windward/Leeward Low1176.60.5099
5-Band Windward/Leeward Low/Med861.70.6963
5-Band Windward/Leeward Medium730.40.8215
5-Band Windward/Leeward Med/High661.10.9076
5-Band Windward/Leeward High622.60.9636
Windward/Leeward 60-40 Low1172.40.5118
Windward/Leeward 60-40 Low/Med866.80.6922
Windward/Leeward 60-40 Medium742.90.8076
Windward/Leeward 60-40 Med/High681.20.8808
Windward/Leeward 60-40 High649.90.9233
5-Band AP Low871.50.6885
5-Band AP Low/Med690.80.8685
5-Band AP Medium604.10.9933
5-Band AP Med/High551.11.0887
5-Band AP High516.21.1623
5-Band SF Bay Tour - Low1011.50.5932
5-Band SF Bay Tour - Low/Med823.90.7283
5-Band SF Bay Tour - Medium706.60.8492
5-Band SF Bay Tour - Med/High643.80.9320
5-Band SF Bay Tour - High606.20.9898
Chicago-Mac Upwind0.8482
Chicago-Mac All Purpose0.8677
Chicago-Mac Downwind0.8813
Bayview-Mac Cove Island0.6379
Bayview-Mac Shore0.6433
Harvest Moon Regatta532.01.1279
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance667.00.8996
Triple Number Coastal/Long Distance Low787.00.7624
Triple Number Coastal/Long Distance Medium612.80.9791
Triple Number Coastal/Long Distance High542.21.1067
Triple Number Windward/Leeward Low1007.60.5955
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High651.30.9212
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1676.61118.4848.2710.7632.9590.6554.0490.3455.5
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance667.00.8996
Triple Number Coastal/Long Distance Low787.00.7624
Triple Number Coastal/Long Distance Medium612.80.9791
Triple Number Coastal/Long Distance High542.21.1067
Triple Number Windward/Leeward Low1007.60.5955
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High651.30.9212
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1676.61118.4848.2710.7632.9590.6554.0490.3455.5
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance667.0
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1676.61118.4848.2710.7632.9590.6554.0490.3455.5
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low787.00.7624
Triple Number Coastal/Long Distance Medium612.80.9791
Triple Number Coastal/Long Distance High542.21.1067
Triple Number Windward/Leeward Low1007.60.5955
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High651.30.9212
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating (Coastal/Long Distance)667.00.8996
Triple Number Coastal/Long Distance Low787.00.7624
Triple Number Coastal/Long Distance Medium612.80.9791
Triple Number Coastal/Long Distance High542.21.1067
Triple Number Windward/Leeward Low1007.60.5955
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High651.30.9212
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1676.61118.4848.2710.7632.9590.6554.0490.3455.5
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low787.00.7624
Triple Number Coastal/Long Distance Medium612.80.9791
Triple Number Coastal/Long Distance High542.21.1067
Triple Number Windward/Leeward Low1007.60.5955
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High651.30.9212
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8996
Triple Number Coastal/Long Distance Low0.7624
Triple Number Coastal/Long Distance Medium0.9791
Triple Number Coastal/Long Distance High1.1067
Triple Number Windward/Leeward Low0.5955
Triple Number Windward/Leeward Medium0.8073
Triple Number Windward/Leeward High0.9212
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1676.61118.4848.2710.7632.9590.6554.0490.3455.5
For information
General Purpose Handicap (GPH)689.8
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance667.00.8996
Triple Number Coastal/Long Distance Low787.00.7624
Triple Number Coastal/Long Distance Medium612.80.9791
Triple Number Coastal/Long Distance High542.21.1067
Triple Number Windward/Leeward Low1007.60.5955
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High651.30.9212
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1676.61118.4848.2710.7632.9590.6554.0490.3455.5
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low787.00.7624
Triple Number Coastal/Long Distance Medium612.80.9791
Triple Number Coastal/Long Distance High542.21.1067
Triple Number Windward/Leeward Low1007.60.5955
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High651.30.9212
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance667.00.8996
Triple Number Coastal/Long Distance Low787.00.7624
Triple Number Coastal/Long Distance Medium612.80.9791
Triple Number Coastal/Long Distance High542.21.1067
Triple Number Windward/Leeward Low1007.60.5955
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High651.30.9212
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1676.61118.4848.2710.7632.9590.6554.0490.3455.5
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance667.00.8996
Triple Number Coastal/Long Distance Low787.00.7624
Triple Number Coastal/Long Distance Medium612.80.9791
Triple Number Coastal/Long Distance High542.21.1067
Triple Number Windward/Leeward Low1007.60.5955
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High651.30.9212
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1676.61118.4848.2710.7632.9590.6554.0490.3455.5
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low787.0
Triple Number Coastal/Long Distance Medium612.8
Triple Number Coastal/Long Distance High542.2
Triple Number Windward/Leeward Low1007.6
Triple Number Windward/Leeward Medium743.2
Triple Number Windward/Leeward High651.3
Predominantly Upwind663.3
Predominantly Downwind629.1
Predominantly Reaching603.4
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance667.00.8996
Triple Number Coastal/Long Distance Low787.00.7624
Triple Number Coastal/Long Distance Medium612.80.9791
Triple Number Coastal/Long Distance High542.21.1067
Triple Number Windward/Leeward Low1007.60.5955
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High651.30.9212
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1676.61118.4848.2710.7632.9590.6554.0490.3455.5
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7624
Triple Number Coastal/Long Distance Medium0.9791
Triple Number Coastal/Long Distance High1.1067
Triple Number Windward/Leeward Low0.5955
Triple Number Windward/Leeward Medium0.8073
Triple Number Windward/Leeward High0.9212
Coastal/Long Distance0.8996
Predominantly Upwind0.9045
Predominantly Downwind0.9538
For information
General Purpose Handicap (GPH)689.8
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.7624
Tretall Distanseseilas Mellomvind0.9791
Tretall Distanseseilas Mye vind1.1067
Tretall Pølsebane Lite vind0.5955
Tretall Pølsebane Mellomvind0.8073
Tretall Pølsebane Mye vind0.9212
Distanseseilas ett tall0.9753
Enkeltall Motvind0.9045
Enkeltall Medvind0.9538
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low787.00.7624
Triple Number Coastal/Long Distance Medium612.80.9791
Triple Number Coastal/Long Distance High542.21.1067
Triple Number Windward/Leeward Low1007.60.5955
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High651.30.9212
Coastal/Long Distance667.00.8996
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind663.30.9045
Predominantly Downwind629.10.9538
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore592.61.0124
Cape Doctor Coastal491.81.2199
Triple Number Coastal/Long Distance Low787.00.7624
Triple Number Coastal/Long Distance Medium612.80.9791
Triple Number Coastal/Long Distance High542.21.1067
Triple Number Windward/Leeward Low1007.60.5955
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High651.30.9212
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7624
Triple Number Coastal/Long Distance Medium0.9791
Triple Number Coastal/Long Distance High1.1067
Triple Number Windward/Leeward Low0.5955
Triple Number Windward/Leeward Medium0.8073
Triple Number Windward/Leeward High0.9212
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7624
Triple Number Coastal/Long Distance Medium0.9791
Triple Number Coastal/Long Distance High1.1067
Triple Number Windward/Leeward Low0.5955
Triple Number Windward/Leeward Medium0.8073
Triple Number Windward/Leeward High0.9212
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance667.00.8996
Triple Number Coastal/Long Distance Low787.00.7624
Triple Number Coastal/Long Distance Medium612.80.9791
Triple Number Coastal/Long Distance High542.21.1067
Triple Number Windward/Leeward Low1007.60.5955
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High651.30.9212
Predominantly Upwind663.30.9045
Predominantly Downwind629.10.9538
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1676.61118.4848.2710.7632.9590.6554.0490.3455.5
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance667.00.8996
Triple Number Coastal/Long Distance Low787.00.7624
Triple Number Coastal/Long Distance Medium612.80.9791
Triple Number Coastal/Long Distance High542.21.1067
Triple Number Windward/Leeward Low1007.60.5955
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High651.30.9212
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1676.61118.4848.2710.7632.9590.6554.0490.3455.5
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low787.00.7624
Triple Number AP Medium612.90.9790
Triple Number AP High542.11.1067
Triple Number Windward/Leeward Low1052.40.5701
Triple Number Windward/Leeward Medium743.20.8073
Triple Number Windward/Leeward High651.30.9212
Single Number Predominant Upwind687.30.8730
Single Number Predominant Reaching613.40.9781
Single Number Predominant Downwind654.20.9172
Predominant Upwind - Low931.80.6439
Predominant Upwind - Low/Med721.80.8312
Predominant Upwind - Medium643.50.9324
Predominant Upwind - Med/High603.00.9950
Predominant Upwind - High580.41.0337
Predominant Downwind Low965.60.6213
Predominant Downwind Low/Med715.20.8389
Predominant Downwind Medium607.80.9872
Predominant Downwind Med/High535.21.1211
Predominant Downwind High478.31.2545
Predominant Reaching Low848.10.7075
Predominant Reaching Low/Med655.20.9157
Predominant Reaching Medium578.11.0379
Predominant Reaching Med/High524.51.1439
Predominant Reaching High483.11.2419
SA/DSPL Upwind30.10SA/DSPL Downwind50.46
Scoring OptionTODTOT
5-Band Windward/Leeward Low1176.60.5099
5-Band Windward/Leeward Low/Med861.70.6963
5-Band Windward/Leeward Medium730.40.8215
5-Band Windward/Leeward Med/High661.10.9076
5-Band Windward/Leeward High622.60.9636
Windward/Leeward 60-40 Low1172.40.5118
Windward/Leeward 60-40 Low/Med866.80.6922
Windward/Leeward 60-40 Medium742.90.8076
Windward/Leeward 60-40 Med/High681.20.8808
Windward/Leeward 60-40 High649.90.9233
5-Band AP Low871.50.6885
5-Band AP Low/Med690.80.8685
5-Band AP Medium604.10.9933
5-Band AP Med/High551.11.0887
5-Band AP High516.21.1623
5-Band SF Bay Tour - Low1011.50.5932
5-Band SF Bay Tour - Low/Med823.90.7283
5-Band SF Bay Tour - Medium706.60.8492
5-Band SF Bay Tour - Med/High643.80.9320
5-Band SF Bay Tour - High606.20.9898
Chicago-Mac Upwind0.8482
Chicago-Mac All Purpose0.8677
Chicago-Mac Downwind0.8813
Bayview-Mac Cove Island0.6379
Bayview-Mac Shore0.6433
Harvest Moon Regatta532.01.1279
One DesignInternational Certificate2025
SURPRISE ONE DESIGNMNA-1234
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassSURPRISEMeasurement01/04/2004HINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA7.640Max. Beam2.384Draft1.576Displacement1,285Wetted area11.45IMS L6.940LSM06.538Acc. length7.640Sink (kg/mm) 8.68
VCGD-0.056VCGM-0.036RM Rated (kg·m) 27.6Limit of positive stability(°) 105.4Stability Index98.5Default crew weight375Declared crew weight400
PROPELLER
Propeller TypeNo Propeller
Hydro generatorNo
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0Checkstays0Spreaders1Rotating mastNo
P9.000IG8.170ISP8.200MDT10.080MDL10.110MDT20.079MDL20.060TL1.950MW0.100GO0.100
E3.300J2.700BAS1.180FSDSFJSPL3.330WPLTPSBD0.109MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodPoles incliningFlotation Date01/04/2004
SFFP0.315FFM0.824FF0.835LCFcl4.440SG1.0250
SAFP7.505FAM0.628FA0.633LCFsh4.594HBI0.707
W125.0W225.0W325.0W425.0
PD1551.0PD2552.5PD3549.0PD4548.9
WD8.250PLM9000.00GSA1.0RSA1.0RM29.5
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
One DesignInternational Certificate2025
SURPRISE ONE DESIGNMNA-1234
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentORC0.160.731.302.252.9718.56* Copied from legacy *
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentORC0.044.208.05NoNo 17.05* Copied from legacy *
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentORC8.858.858.855.555.7041.15* Copied from legacy *