Club Certificate2025
ConcordiaFIN 12229
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
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 Angles44.2°44.2°42.3°41.0°40.8°40.5°40.4°40.8°41.8°
Beat VMG2.002.773.393.814.064.164.224.224.15
52°3.154.265.075.605.886.026.086.136.13
60°3.354.495.295.796.056.196.266.336.36
75°3.424.615.455.946.226.396.516.636.72
90°3.324.495.375.976.276.466.636.867.01
110°3.234.505.496.106.456.706.897.187.39
120°3.094.335.346.026.426.726.977.437.79
135°2.743.904.925.736.236.566.867.428.05
150°2.323.384.365.205.876.286.587.137.71
Run VMG2.012.933.784.535.195.726.116.687.18
Gybe Angles148.3°148.3°151.4°154.1°160.0°166.0°173.9°178.0°178.0°
APH ToD:677.3CDL: 6.411APH ToT: 0.8858CertNo:58
BOAT
ClassB-31DesignerBROSTRÖM & GRANDINBuilderAge date01/1971Series date01/1972Offset fileG1013.bofData fileFIN12229
HULL
Length Overall9.330 mMaximum Beam2.942 mDraft1.568 mDisplacement3,500 kgDLR10.5296IMS DivisionCruiser/RacerDynamic Allowance0.600%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeSolid 3 bladesDiameter0.415m
CREW
Maximum weight400 kg(declared)Minimum weight270 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail16.6216.89Headsail Luffed29.8529.85Headsail FlyingSymmetric57.6957.69Asymmetric
STORM SAIL AREAS (m²)
Trysail4.76Storm Jib6.07Heavy Weather Jib16.37
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
ConcordiaFIN 12229
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
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 VMG1802.01298.91063.3945.2887.8865.2853.4853.1867.5
52°1142.9844.5709.8642.9611.8598.1592.0587.6587.7
60°1075.5801.2680.1622.1594.7581.2574.6568.3565.6
75°1052.6781.2661.2605.7578.7563.0553.2542.7535.7
90°1085.5801.0670.7602.8574.0556.9542.8525.0513.8
110°1113.3800.7656.1590.3558.3537.3522.2501.5487.1
120°1165.6831.8674.3597.6561.0536.1516.2484.5461.9
135°1315.6923.4731.9627.8578.1548.7525.1485.0447.3
150°1551.51064.8825.5691.7613.7573.3546.9504.9467.2
Run VMG1794.41229.6952.1795.2693.2629.8588.9538.7501.6
Selected Courses
Windward / Leeward1796.41264.31007.7870.2790.5747.5721.1695.9684.5
All purpose1368.9979.4794.8699.3649.2622.5605.2585.2573.0
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward831.60.7215
All purpose677.30.8858
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low887.00.6764
Triple Number Coastal/Long Distance Medium671.40.8937
Triple Number Coastal/Long Distance High602.00.9966
Triple Number Windward/Leeward Low1135.90.5282
Triple Number Windward/Leeward Medium824.40.7278
Triple Number Windward/Leeward High718.20.8354
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance736.50.8146
Triple Number Coastal/Long Distance Low887.00.6764
Triple Number Coastal/Long Distance Medium671.40.8937
Triple Number Coastal/Long Distance High602.00.9966
Triple Number Windward/Leeward Low1135.90.5282
Triple Number Windward/Leeward Medium824.40.7278
Triple Number Windward/Leeward High718.20.8354
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1902.61260.8948.7785.9693.1646.1611.2557.9543.3
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6207
Downwind "popa"0.7739
70% up, 30% down "Ilhabela"0.6599
30% up, 70% down "Ilhabela-inverso"0.7205
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low887.00.6764
Triple Number Coastal/Long Distance Medium671.40.8937
Triple Number Coastal/Long Distance High602.00.9966
Triple Number Windward/Leeward Low1135.90.5282
Triple Number Windward/Leeward Medium824.40.7278
Triple Number Windward/Leeward High718.20.8354
Predominantly Upwind736.10.8151
Predominantly Downwind684.30.8768
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low887.10.6764
Triple Number AP Medium671.40.8936
Triple Number AP High602.00.9966
Triple Number Windward/Leeward Low1188.40.5049
Triple Number Windward/Leeward Medium824.40.7278
Triple Number Windward/Leeward High718.20.8354
Single Number Predominant Upwind768.30.7809
Single Number Predominant Reaching678.30.8846
Single Number Predominant Downwind718.50.8350
Predominant Upwind - Low1075.20.5580
Predominant Upwind - Low/Med811.70.7392
Predominant Upwind - Medium710.00.8451
Predominant Upwind - Med/High663.90.9037
Predominant Upwind - High649.40.9239
Predominant Downwind Low1080.10.5555
Predominant Downwind Low/Med782.30.7670
Predominant Downwind Medium656.50.9140
Predominant Downwind Med/High585.61.0246
Predominant Downwind High550.21.0904
Predominant Reaching Low964.40.6222
Predominant Reaching Low/Med722.70.8302
Predominant Reaching Medium627.30.9565
Predominant Reaching Med/High577.81.0385
Predominant Reaching High553.51.0841
SA/DSPL Upwind20.08SA/DSPL Downwind32.10
Scoring OptionTODTOT
5-Band Windward/Leeward Low1333.60.4499
5-Band Windward/Leeward Low/Med964.90.6218
5-Band Windward/Leeward Medium808.90.7417
5-Band Windward/Leeward Med/High727.20.8251
5-Band Windward/Leeward High698.30.8592
Windward/Leeward 60-40 Low1340.00.4478
Windward/Leeward 60-40 Low/Med978.00.6135
Windward/Leeward 60-40 Medium828.20.7245
Windward/Leeward 60-40 Med/High753.40.7964
Windward/Leeward 60-40 High729.70.8222
5-Band AP Low987.00.6079
5-Band AP Low/Med766.80.7824
5-Band AP Medium661.50.9070
5-Band AP Med/High608.50.9861
5-Band AP High586.61.0229
5-Band SF Bay Tour - Low1148.70.5223
5-Band SF Bay Tour - Low/Med925.00.6486
5-Band SF Bay Tour - Medium783.80.7655
5-Band SF Bay Tour - Med/High713.00.8415
5-Band SF Bay Tour - High687.70.8725
Chicago-Mac Upwind0.7563
Chicago-Mac All Purpose0.7822
Chicago-Mac Downwind0.8040
Bayview-Mac Cove Island0.5643
Bayview-Mac Shore0.5682
Harvest Moon Regatta585.51.0247
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance736.50.8146
Triple Number Coastal/Long Distance Low887.00.6764
Triple Number Coastal/Long Distance Medium671.40.8937
Triple Number Coastal/Long Distance High602.00.9966
Triple Number Windward/Leeward Low1135.90.5282
Triple Number Windward/Leeward Medium824.40.7278
Triple Number Windward/Leeward High718.20.8354
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1902.61260.8948.7785.9693.1646.1611.2557.9543.3
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance736.50.8146
Triple Number Coastal/Long Distance Low887.00.6764
Triple Number Coastal/Long Distance Medium671.40.8937
Triple Number Coastal/Long Distance High602.00.9966
Triple Number Windward/Leeward Low1135.90.5282
Triple Number Windward/Leeward Medium824.40.7278
Triple Number Windward/Leeward High718.20.8354
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1902.61260.8948.7785.9693.1646.1611.2557.9543.3
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance736.5
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1902.61260.8948.7785.9693.1646.1611.2557.9543.3
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low887.00.6764
Triple Number Coastal/Long Distance Medium671.40.8937
Triple Number Coastal/Long Distance High602.00.9966
Triple Number Windward/Leeward Low1135.90.5282
Triple Number Windward/Leeward Medium824.40.7278
Triple Number Windward/Leeward High718.20.8354
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating736.50.8146
FinRating, kevyt tuuli1313.00.7616
FinRating, kova tuuli590.00.8475
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low887.00.6764
Triple Number Coastal/Long Distance Medium671.40.8937
Triple Number Coastal/Long Distance High602.00.9966
Triple Number Windward/Leeward Low1135.90.5282
Triple Number Windward/Leeward Medium824.40.7278
Triple Number Windward/Leeward High718.20.8354
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8146
Triple Number Coastal/Long Distance Low0.6764
Triple Number Coastal/Long Distance Medium0.8937
Triple Number Coastal/Long Distance High0.9966
Triple Number Windward/Leeward Low0.5282
Triple Number Windward/Leeward Medium0.7278
Triple Number Windward/Leeward High0.8354
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1902.61260.8948.7785.9693.1646.1611.2557.9543.3
For information
General Purpose Handicap (GPH)763.6
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance736.50.8146
Triple Number Coastal/Long Distance Low887.00.6764
Triple Number Coastal/Long Distance Medium671.40.8937
Triple Number Coastal/Long Distance High602.00.9966
Triple Number Windward/Leeward Low1135.90.5282
Triple Number Windward/Leeward Medium824.40.7278
Triple Number Windward/Leeward High718.20.8354
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1902.61260.8948.7785.9693.1646.1611.2557.9543.3
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low887.00.6764
Triple Number Coastal/Long Distance Medium671.40.8937
Triple Number Coastal/Long Distance High602.00.9966
Triple Number Windward/Leeward Low1135.90.5282
Triple Number Windward/Leeward Medium824.40.7278
Triple Number Windward/Leeward High718.20.8354
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance736.50.8146
Triple Number Coastal/Long Distance Low887.00.6764
Triple Number Coastal/Long Distance Medium671.40.8937
Triple Number Coastal/Long Distance High602.00.9966
Triple Number Windward/Leeward Low1135.90.5282
Triple Number Windward/Leeward Medium824.40.7278
Triple Number Windward/Leeward High718.20.8354
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1902.61260.8948.7785.9693.1646.1611.2557.9543.3
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance736.50.8146
Triple Number Coastal/Long Distance Low887.00.6764
Triple Number Coastal/Long Distance Medium671.40.8937
Triple Number Coastal/Long Distance High602.00.9966
Triple Number Windward/Leeward Low1135.90.5282
Triple Number Windward/Leeward Medium824.40.7278
Triple Number Windward/Leeward High718.20.8354
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1902.61260.8948.7785.9693.1646.1611.2557.9543.3
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low887.0
Triple Number Coastal/Long Distance Medium671.4
Triple Number Coastal/Long Distance High602.0
Triple Number Windward/Leeward Low1135.9
Triple Number Windward/Leeward Medium824.4
Triple Number Windward/Leeward High718.2
Predominantly Upwind736.1
Predominantly Downwind684.3
Predominantly Reaching659.2
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance736.50.8146
Triple Number Coastal/Long Distance Low887.00.6764
Triple Number Coastal/Long Distance Medium671.40.8937
Triple Number Coastal/Long Distance High602.00.9966
Triple Number Windward/Leeward Low1135.90.5282
Triple Number Windward/Leeward Medium824.40.7278
Triple Number Windward/Leeward High718.20.8354
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1902.61260.8948.7785.9693.1646.1611.2557.9543.3
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6764
Triple Number Coastal/Long Distance Medium0.8937
Triple Number Coastal/Long Distance High0.9966
Triple Number Windward/Leeward Low0.5282
Triple Number Windward/Leeward Medium0.7278
Triple Number Windward/Leeward High0.8354
Coastal/Long Distance0.8146
Predominantly Upwind0.8151
Predominantly Downwind0.8768
For information
General Purpose Handicap (GPH)763.6
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.8858
Distanseseilas Trippeltall svak vind0.6764
Distanseseilas Trippeltall mellomvind0.8937
Distanseseilas Trippeltall sterk vind0.9966
Pølsebane Trippeltall svak vind0.5282
Pølsebane Trippeltall mellomvind0.7278
Pølsebane Trippeltall sterk vind0.8354
Motvind Singeltall0.8151
Medvind Singeltall0.8768
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low887.00.6764
Triple Number Coastal/Long Distance Medium671.40.8937
Triple Number Coastal/Long Distance High602.00.9966
Triple Number Windward/Leeward Low1135.90.5282
Triple Number Windward/Leeward Medium824.40.7278
Triple Number Windward/Leeward High718.20.8354
Coastal/Long Distance736.50.8146
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind736.10.8151
Predominantly Downwind684.30.8768
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore687.90.8722
Cape Doctor Coastal576.71.0405
Triple Number Coastal/Long Distance Low887.00.6764
Triple Number Coastal/Long Distance Medium671.40.8937
Triple Number Coastal/Long Distance High602.00.9966
Triple Number Windward/Leeward Low1135.90.5282
Triple Number Windward/Leeward Medium824.40.7278
Triple Number Windward/Leeward High718.20.8354
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6764
Triple Number Coastal/Long Distance Medium0.8937
Triple Number Coastal/Long Distance High0.9966
Triple Number Windward/Leeward Low0.5282
Triple Number Windward/Leeward Medium0.7278
Triple Number Windward/Leeward High0.8354
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6764
Triple Number Coastal/Long Distance Medium0.8937
Triple Number Coastal/Long Distance High0.9966
Triple Number Windward/Leeward Low0.5282
Triple Number Windward/Leeward Medium0.7278
Triple Number Windward/Leeward High0.8354
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance736.50.8146
Triple Number Coastal/Long Distance Low887.00.6764
Triple Number Coastal/Long Distance Medium671.40.8937
Triple Number Coastal/Long Distance High602.00.9966
Triple Number Windward/Leeward Low1135.90.5282
Triple Number Windward/Leeward Medium824.40.7278
Triple Number Windward/Leeward High718.20.8354
Predominantly Upwind736.10.8151
Predominantly Downwind684.30.8768
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1902.61260.8948.7785.9693.1646.1611.2557.9543.3
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance736.50.8146
Triple Number Coastal/Long Distance Low887.00.6764
Triple Number Coastal/Long Distance Medium671.40.8937
Triple Number Coastal/Long Distance High602.00.9966
Triple Number Windward/Leeward Low1135.90.5282
Triple Number Windward/Leeward Medium824.40.7278
Triple Number Windward/Leeward High718.20.8354
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1902.61260.8948.7785.9693.1646.1611.2557.9543.3
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low887.10.6764
Triple Number AP Medium671.40.8936
Triple Number AP High602.00.9966
Triple Number Windward/Leeward Low1188.40.5049
Triple Number Windward/Leeward Medium824.40.7278
Triple Number Windward/Leeward High718.20.8354
Single Number Predominant Upwind768.30.7809
Single Number Predominant Reaching678.30.8846
Single Number Predominant Downwind718.50.8350
Predominant Upwind - Low1075.20.5580
Predominant Upwind - Low/Med811.70.7392
Predominant Upwind - Medium710.00.8451
Predominant Upwind - Med/High663.90.9037
Predominant Upwind - High649.40.9239
Predominant Downwind Low1080.10.5555
Predominant Downwind Low/Med782.30.7670
Predominant Downwind Medium656.50.9140
Predominant Downwind Med/High585.61.0246
Predominant Downwind High550.21.0904
Predominant Reaching Low964.40.6222
Predominant Reaching Low/Med722.70.8302
Predominant Reaching Medium627.30.9565
Predominant Reaching Med/High577.81.0385
Predominant Reaching High553.51.0841
SA/DSPL Upwind20.08SA/DSPL Downwind32.10
Scoring OptionTODTOT
5-Band Windward/Leeward Low1333.60.4499
5-Band Windward/Leeward Low/Med964.90.6218
5-Band Windward/Leeward Medium808.90.7417
5-Band Windward/Leeward Med/High727.20.8251
5-Band Windward/Leeward High698.30.8592
Windward/Leeward 60-40 Low1340.00.4478
Windward/Leeward 60-40 Low/Med978.00.6135
Windward/Leeward 60-40 Medium828.20.7245
Windward/Leeward 60-40 Med/High753.40.7964
Windward/Leeward 60-40 High729.70.8222
5-Band AP Low987.00.6079
5-Band AP Low/Med766.80.7824
5-Band AP Medium661.50.9070
5-Band AP Med/High608.50.9861
5-Band AP High586.61.0229
5-Band SF Bay Tour - Low1148.70.5223
5-Band SF Bay Tour - Low/Med925.00.6486
5-Band SF Bay Tour - Medium783.80.7655
5-Band SF Bay Tour - Med/High713.00.8415
5-Band SF Bay Tour - High687.70.8725
Chicago-Mac Upwind0.7563
Chicago-Mac All Purpose0.7822
Chicago-Mac Downwind0.8040
Bayview-Mac Cove Island0.5643
Bayview-Mac Shore0.5682
Harvest Moon Regatta585.51.0247
Club Certificate2025
ConcordiaFIN 12229
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassB-31Measurement01/07/2014HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA9.330Max. Beam2.942Draft1.568Displacement3,500Wetted area17.27IMS L7.164LSM06.926Acc. length9.079Sink (kg/mm) 11.74
VCGD-0.103VCGM-0.016RM Rated (kg·m) 54.0Limit of positive stability(°) N/AStability IndexN/ADefault crew weight408Declared crew weight400
PROPELLER
Propeller TypeSolid 3 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.415PBWPIPA0.0215
PSDPHDPHL
PSAESL
ST1ST2ST3
ST4ST5
RIG
Forestay tensionAftInner stayMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders1Rotating mastNo
P9.700IG11.010ISP11.010MDT10.115MDL10.170MDT2MDL2TLNo TaperMWGO
E2.800J2.460BAS1.090FSDFoilSFJ0.360SPL3.460WPLTPSBD0.111MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date17/07/2025
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
ConcordiaFIN 12229
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.641.121.8816.62
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment11.302.605.1911.40NoNo 29.85
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment111.1311.1311.136.226.2257.69
CRUISER/RACER REQUIREMENTS*
Accommodation length9.1 mTable area0.44 m²Headroom1.63 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity62 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity32 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.