Double HandedClub Certificate2025
CascadeFIN873
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 Angles42.1°42.1°40.7°41.0°41.3°41.5°41.6°42.6°44.9°
Beat VMG2.293.053.553.783.893.943.973.973.84
52°3.484.575.265.645.805.895.945.975.87
60°3.634.775.495.886.076.166.216.276.24
75°3.734.925.676.106.336.466.536.636.66
90°3.654.845.656.156.446.626.756.896.99
110°3.604.875.776.306.536.686.787.007.17
120°3.474.745.706.306.656.877.007.187.18
135°3.104.335.336.096.556.877.147.627.90
150°2.603.734.745.596.216.616.927.498.07
Run VMG2.253.234.114.875.526.046.447.027.55
Gybe Angles147.3°147.3°151.4°154.3°161.0°167.1°175.4°178.1°178.1°
APH ToD:664.1CDL: 6.448APH ToT: 0.9034CertNo:
BOAT
ClassBotnia 6 HRDesignerBuilderAge date01/1976Series date10/1970Offset fileBotnia6CL.offData fileFIN873
HULL
Length Overall10.500 mMaximum Beam2.300 mDraft1.635 mDisplacement4,350 kgDLR10.7761IMS DivisionCruiser/RacerDynamic Allowance0.580%Age Allowance0.487%
PROPELLER
InstallationIn ApertureTypeFolding 2 bladesDiameter0.380m
CREW
Maximum weight160 kg(declared)Minimum weight120 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail20.8921.46Headsail Luffed29.2629.26Headsail FlyingSymmetric63.2663.26Asymmetric
STORM SAIL AREAS (m²)
Trysail5.84Storm Jib6.72Heavy Weather Jib18.14
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.
Double HandedClub Certificate2025
CascadeFIN873
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 VMG1572.71179.51013.7951.5924.5912.6905.7907.6937.9
52°1035.6787.4684.4638.6620.3611.4606.3602.7613.3
60°990.9754.0655.9611.9593.2584.6579.6574.4576.9
75°965.4732.4634.9590.2568.6557.4551.3543.4540.4
90°987.7743.4637.7585.5559.0543.7533.7522.1514.7
110°998.7739.0623.4571.7551.4538.8530.9514.6501.9
120°1038.3759.2631.9571.3541.0524.1514.0501.3501.5
135°1160.2831.7674.9591.2549.9524.3504.0472.3455.4
150°1385.4964.9759.0644.1579.4544.3520.1480.8445.9
Run VMG1602.01114.2875.3739.5651.9595.8559.1512.6476.9
Selected Courses
Windward / Leeward1584.11146.8944.5845.5788.2754.2732.4710.1707.4
All purpose1218.8895.9749.8679.7643.4623.2610.2594.5591.1
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward816.90.7344
All purpose664.10.9034
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low822.80.7292
Triple Number Coastal/Long Distance Medium659.30.9100
Triple Number Coastal/Long Distance High607.50.9876
Triple Number Windward/Leeward Low1045.70.5738
Triple Number Windward/Leeward Medium811.80.7391
Triple Number Windward/Leeward High729.50.8225
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance720.00.8334
Triple Number Coastal/Long Distance Low822.80.7292
Triple Number Coastal/Long Distance Medium659.30.9100
Triple Number Coastal/Long Distance High607.50.9876
Triple Number Windward/Leeward Low1045.70.5738
Triple Number Windward/Leeward Medium811.80.7391
Triple Number Windward/Leeward High729.50.8225
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1671.01143.6889.8763.0688.1646.3613.8563.5558.6
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6181
Downwind "popa"0.8319
70% up, 30% down "Ilhabela"0.6697
30% up, 70% down "Ilhabela-inverso"0.7537
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low822.80.7292
Triple Number Coastal/Long Distance Medium659.30.9100
Triple Number Coastal/Long Distance High607.50.9876
Triple Number Windward/Leeward Low1045.70.5738
Triple Number Windward/Leeward Medium811.80.7391
Triple Number Windward/Leeward High729.50.8225
Predominantly Upwind729.00.8230
Predominantly Downwind653.80.9177
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low822.80.7292
Triple Number AP Medium659.40.9099
Triple Number AP High607.50.9876
Triple Number Windward/Leeward Low1089.90.5505
Triple Number Windward/Leeward Medium811.80.7391
Triple Number Windward/Leeward High729.50.8225
Single Number Predominant Upwind755.00.7947
Single Number Predominant Reaching653.20.9185
Single Number Predominant Downwind683.00.8785
Predominant Upwind - Low982.70.6105
Predominant Upwind - Low/Med781.50.7678
Predominant Upwind - Medium711.10.8438
Predominant Upwind - Med/High678.70.8841
Predominant Upwind - High669.60.8961
Predominant Downwind Low980.00.6122
Predominant Downwind Low/Med734.40.8170
Predominant Downwind Medium632.10.9492
Predominant Downwind Med/High572.81.0475
Predominant Downwind High544.11.1028
Predominant Reaching Low881.80.6804
Predominant Reaching Low/Med686.80.8737
Predominant Reaching Medium612.10.9803
Predominant Reaching Med/High572.51.0480
Predominant Reaching High554.71.0816
SA/DSPL Upwind18.73SA/DSPL Downwind31.42
Scoring OptionTODTOT
5-Band Windward/Leeward Low1206.40.4974
5-Band Windward/Leeward Low/Med916.30.6548
5-Band Windward/Leeward Medium800.40.7496
5-Band Windward/Leeward Med/High737.00.8141
5-Band Windward/Leeward High713.50.8409
Windward/Leeward 60-40 Low1212.40.4949
Windward/Leeward 60-40 Low/Med933.70.6426
Windward/Leeward 60-40 Medium826.90.7256
Windward/Leeward 60-40 Med/High771.40.7778
Windward/Leeward 60-40 High753.30.7965
5-Band AP Low903.50.6641
5-Band AP Low/Med730.90.8209
5-Band AP Medium652.20.9200
5-Band AP Med/High612.50.9796
5-Band AP High596.61.0057
5-Band SF Bay Tour - Low1049.20.5718
5-Band SF Bay Tour - Low/Med880.70.6813
5-Band SF Bay Tour - Medium778.50.7708
5-Band SF Bay Tour - Med/High725.40.8271
5-Band SF Bay Tour - High706.20.8496
Chicago-Mac Upwind0.7745
Chicago-Mac All Purpose0.8132
Chicago-Mac Downwind0.8497
Bayview-Mac Cove Island0.6110
Bayview-Mac Shore0.6151
Harvest Moon Regatta570.31.0521
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance720.00.8334
Triple Number Coastal/Long Distance Low822.80.7292
Triple Number Coastal/Long Distance Medium659.30.9100
Triple Number Coastal/Long Distance High607.50.9876
Triple Number Windward/Leeward Low1045.70.5738
Triple Number Windward/Leeward Medium811.80.7391
Triple Number Windward/Leeward High729.50.8225
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1671.01143.6889.8763.0688.1646.3613.8563.5558.6
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance720.00.8334
Triple Number Coastal/Long Distance Low822.80.7292
Triple Number Coastal/Long Distance Medium659.30.9100
Triple Number Coastal/Long Distance High607.50.9876
Triple Number Windward/Leeward Low1045.70.5738
Triple Number Windward/Leeward Medium811.80.7391
Triple Number Windward/Leeward High729.50.8225
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1671.01143.6889.8763.0688.1646.3613.8563.5558.6
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance720.0
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1671.01143.6889.8763.0688.1646.3613.8563.5558.6
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low822.80.7292
Triple Number Coastal/Long Distance Medium659.30.9100
Triple Number Coastal/Long Distance High607.50.9876
Triple Number Windward/Leeward Low1045.70.5738
Triple Number Windward/Leeward Medium811.80.7391
Triple Number Windward/Leeward High729.50.8225
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating720.00.8334
FinRating, kevyt tuuli1185.70.8434
FinRating, kova tuuli601.00.8320
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low822.80.7292
Triple Number Coastal/Long Distance Medium659.30.9100
Triple Number Coastal/Long Distance High607.50.9876
Triple Number Windward/Leeward Low1045.70.5738
Triple Number Windward/Leeward Medium811.80.7391
Triple Number Windward/Leeward High729.50.8225
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8334
Triple Number Coastal/Long Distance Low0.7292
Triple Number Coastal/Long Distance Medium0.9100
Triple Number Coastal/Long Distance High0.9876
Triple Number Windward/Leeward Low0.5738
Triple Number Windward/Leeward Medium0.7391
Triple Number Windward/Leeward High0.8225
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1671.01143.6889.8763.0688.1646.3613.8563.5558.6
For information
General Purpose Handicap (GPH)738.3
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance720.00.8334
Triple Number Coastal/Long Distance Low822.80.7292
Triple Number Coastal/Long Distance Medium659.30.9100
Triple Number Coastal/Long Distance High607.50.9876
Triple Number Windward/Leeward Low1045.70.5738
Triple Number Windward/Leeward Medium811.80.7391
Triple Number Windward/Leeward High729.50.8225
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1671.01143.6889.8763.0688.1646.3613.8563.5558.6
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low822.80.7292
Triple Number Coastal/Long Distance Medium659.30.9100
Triple Number Coastal/Long Distance High607.50.9876
Triple Number Windward/Leeward Low1045.70.5738
Triple Number Windward/Leeward Medium811.80.7391
Triple Number Windward/Leeward High729.50.8225
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance720.00.8334
Triple Number Coastal/Long Distance Low822.80.7292
Triple Number Coastal/Long Distance Medium659.30.9100
Triple Number Coastal/Long Distance High607.50.9876
Triple Number Windward/Leeward Low1045.70.5738
Triple Number Windward/Leeward Medium811.80.7391
Triple Number Windward/Leeward High729.50.8225
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1671.01143.6889.8763.0688.1646.3613.8563.5558.6
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance720.00.8334
Triple Number Coastal/Long Distance Low822.80.7292
Triple Number Coastal/Long Distance Medium659.30.9100
Triple Number Coastal/Long Distance High607.50.9876
Triple Number Windward/Leeward Low1045.70.5738
Triple Number Windward/Leeward Medium811.80.7391
Triple Number Windward/Leeward High729.50.8225
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1671.01143.6889.8763.0688.1646.3613.8563.5558.6
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low822.8
Triple Number Coastal/Long Distance Medium659.3
Triple Number Coastal/Long Distance High607.5
Triple Number Windward/Leeward Low1045.7
Triple Number Windward/Leeward Medium811.8
Triple Number Windward/Leeward High729.5
Predominantly Upwind729.0
Predominantly Downwind653.8
Predominantly Reaching634.0
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance720.00.8334
Triple Number Coastal/Long Distance Low822.80.7292
Triple Number Coastal/Long Distance Medium659.30.9100
Triple Number Coastal/Long Distance High607.50.9876
Triple Number Windward/Leeward Low1045.70.5738
Triple Number Windward/Leeward Medium811.80.7391
Triple Number Windward/Leeward High729.50.8225
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1671.01143.6889.8763.0688.1646.3613.8563.5558.6
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7292
Triple Number Coastal/Long Distance Medium0.9100
Triple Number Coastal/Long Distance High0.9876
Triple Number Windward/Leeward Low0.5738
Triple Number Windward/Leeward Medium0.7391
Triple Number Windward/Leeward High0.8225
Coastal/Long Distance0.8334
Predominantly Upwind0.8230
Predominantly Downwind0.9177
For information
General Purpose Handicap (GPH)738.3
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.9034
Distanseseilas Trippeltall svak vind0.7292
Distanseseilas Trippeltall mellomvind0.9100
Distanseseilas Trippeltall sterk vind0.9876
Pølsebane Trippeltall svak vind0.5738
Pølsebane Trippeltall mellomvind0.7391
Pølsebane Trippeltall sterk vind0.8225
Motvind Singeltall0.8230
Medvind Singeltall0.9177
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low822.80.7292
Triple Number Coastal/Long Distance Medium659.30.9100
Triple Number Coastal/Long Distance High607.50.9876
Triple Number Windward/Leeward Low1045.70.5738
Triple Number Windward/Leeward Medium811.80.7391
Triple Number Windward/Leeward High729.50.8225
Coastal/Long Distance720.00.8334
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind729.00.8230
Predominantly Downwind653.80.9177
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore708.20.8472
Cape Doctor Coastal592.11.0133
Triple Number Coastal/Long Distance Low822.80.7292
Triple Number Coastal/Long Distance Medium659.30.9100
Triple Number Coastal/Long Distance High607.50.9876
Triple Number Windward/Leeward Low1045.70.5738
Triple Number Windward/Leeward Medium811.80.7391
Triple Number Windward/Leeward High729.50.8225
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7292
Triple Number Coastal/Long Distance Medium0.9100
Triple Number Coastal/Long Distance High0.9876
Triple Number Windward/Leeward Low0.5738
Triple Number Windward/Leeward Medium0.7391
Triple Number Windward/Leeward High0.8225
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7292
Triple Number Coastal/Long Distance Medium0.9100
Triple Number Coastal/Long Distance High0.9876
Triple Number Windward/Leeward Low0.5738
Triple Number Windward/Leeward Medium0.7391
Triple Number Windward/Leeward High0.8225
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance720.00.8334
Triple Number Coastal/Long Distance Low822.80.7292
Triple Number Coastal/Long Distance Medium659.30.9100
Triple Number Coastal/Long Distance High607.50.9876
Triple Number Windward/Leeward Low1045.70.5738
Triple Number Windward/Leeward Medium811.80.7391
Triple Number Windward/Leeward High729.50.8225
Predominantly Upwind729.00.8230
Predominantly Downwind653.80.9177
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1671.01143.6889.8763.0688.1646.3613.8563.5558.6
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance720.00.8334
Triple Number Coastal/Long Distance Low822.80.7292
Triple Number Coastal/Long Distance Medium659.30.9100
Triple Number Coastal/Long Distance High607.50.9876
Triple Number Windward/Leeward Low1045.70.5738
Triple Number Windward/Leeward Medium811.80.7391
Triple Number Windward/Leeward High729.50.8225
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1671.01143.6889.8763.0688.1646.3613.8563.5558.6
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low822.80.7292
Triple Number AP Medium659.40.9099
Triple Number AP High607.50.9876
Triple Number Windward/Leeward Low1089.90.5505
Triple Number Windward/Leeward Medium811.80.7391
Triple Number Windward/Leeward High729.50.8225
Single Number Predominant Upwind755.00.7947
Single Number Predominant Reaching653.20.9185
Single Number Predominant Downwind683.00.8785
Predominant Upwind - Low982.70.6105
Predominant Upwind - Low/Med781.50.7678
Predominant Upwind - Medium711.10.8438
Predominant Upwind - Med/High678.70.8841
Predominant Upwind - High669.60.8961
Predominant Downwind Low980.00.6122
Predominant Downwind Low/Med734.40.8170
Predominant Downwind Medium632.10.9492
Predominant Downwind Med/High572.81.0475
Predominant Downwind High544.11.1028
Predominant Reaching Low881.80.6804
Predominant Reaching Low/Med686.80.8737
Predominant Reaching Medium612.10.9803
Predominant Reaching Med/High572.51.0480
Predominant Reaching High554.71.0816
SA/DSPL Upwind18.73SA/DSPL Downwind31.42
Scoring OptionTODTOT
5-Band Windward/Leeward Low1206.40.4974
5-Band Windward/Leeward Low/Med916.30.6548
5-Band Windward/Leeward Medium800.40.7496
5-Band Windward/Leeward Med/High737.00.8141
5-Band Windward/Leeward High713.50.8409
Windward/Leeward 60-40 Low1212.40.4949
Windward/Leeward 60-40 Low/Med933.70.6426
Windward/Leeward 60-40 Medium826.90.7256
Windward/Leeward 60-40 Med/High771.40.7778
Windward/Leeward 60-40 High753.30.7965
5-Band AP Low903.50.6641
5-Band AP Low/Med730.90.8209
5-Band AP Medium652.20.9200
5-Band AP Med/High612.50.9796
5-Band AP High596.61.0057
5-Band SF Bay Tour - Low1049.20.5718
5-Band SF Bay Tour - Low/Med880.70.6813
5-Band SF Bay Tour - Medium778.50.7708
5-Band SF Bay Tour - Med/High725.40.8271
5-Band SF Bay Tour - High706.20.8496
Chicago-Mac Upwind0.7745
Chicago-Mac All Purpose0.8132
Chicago-Mac Downwind0.8497
Bayview-Mac Cove Island0.6110
Bayview-Mac Shore0.6151
Harvest Moon Regatta570.31.0521
Double HandedClub Certificate2025
CascadeFIN873
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassBotnia 6 HRMeasurementHINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA10.500Max. Beam2.300Draft1.635Displacement4,350Wetted area18.98IMS L7.678LSM07.390Acc. length7.475Sink (kg/mm) 10.92
VCGD-0.249VCGM-0.208RM Rated (kg·m) 36.1Limit of positive stability(°) N/AStability IndexN/ADefault crew weight170Declared crew weight160
PROPELLER
Propeller TypeFolding 2 blades
InstallationIn ApertureTwin screwNoHydro generatorNo
PRD0.380PBWPIPA0.0070
APHAPTAPB
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders1Rotating mastNo
P10.420IG11.590ISP12.140MDT10.126MDL10.175MDT2MDL2TLTaperMWGO
E3.200J3.550BAS1.240FSDNo FoilSFJ0.460SPL3.465WPLTPS0.000BDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date11/03/2020
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Double HandedClub Certificate2025
CascadeFIN873
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.270.811.332.152.8020.89
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentG1 25.2610.93NoNo 29.26
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment111.3011.3011.306.8063.26
CRUISER/RACER REQUIREMENTS*
Accommodation length7.5 mTable area0.22 m²Headroom1.40 mMinimum number of berths2Personal gear stowage0.08 m³Fresh water capacity15 lMinimum number of seats in cockpit2Food stowage0.12 m³Fuel capacity20 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.