Club 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 Angles42.8°42.8°40.1°40.0°39.8°39.8°39.7°40.1°41.7°
Beat VMG2.263.093.704.014.154.224.274.304.22
52°3.514.675.445.876.046.136.196.246.20
60°3.704.885.656.076.276.356.416.476.47
75°3.805.025.816.266.496.616.686.786.82
90°3.664.915.766.286.586.766.887.037.13
110°3.634.955.906.446.736.887.017.137.30
120°3.464.775.796.426.787.027.207.457.52
135°3.084.325.356.146.636.967.247.768.29
150°2.583.724.745.606.256.676.987.548.16
Run VMG2.233.224.114.875.546.076.487.077.59
Gybe Angles147.1°147.1°151.2°154.1°160.4°166.4°174.1°178.1°178.1°
APH ToD:644.0CDL: 6.913APH ToT: 0.9316CertNo:
BOAT
ClassBotnia 6 HRDesignerBuilderAge date01/1976Series date10/1970Offset fileBotnia6CL.offData fileFIN873
HULL
Length Overall10.500 mMaximum Beam2.300 mDraft1.654 mDisplacement4,350 kgDLR10.6566IMS DivisionCruiser/RacerDynamic Allowance0.520%Age Allowance0.487%
PROPELLER
InstallationIn ApertureTypeFolding 2 bladesDiameter0.380m
CREW
Maximum weight420 kg(declared)Minimum weight290 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail20.8921.47Headsail 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.
Club 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 VMG1591.61163.3972.3897.0867.1852.7843.8837.9853.7
52°1026.1771.4662.1613.7595.6586.9581.9576.8580.7
60°973.6737.1637.5592.8574.6566.8562.0556.4556.5
75°947.0717.0620.1575.4554.6544.5539.0531.3527.8
90°982.8733.6624.6573.4547.2532.3522.9512.3505.1
110°991.4727.9610.0558.9535.3522.9513.9505.0493.1
120°1041.0754.1622.1561.1531.2512.7499.8483.5478.7
135°1167.6833.4672.8586.2543.2517.3497.0464.1434.1
150°1397.2969.0759.3643.0576.1539.8515.8477.3441.3
Run VMG1614.91118.9876.0738.8650.1592.8555.2508.9474.4
Selected Courses
Windward / Leeward1601.81141.1924.1817.9758.6722.7699.5673.4664.1
All purpose1222.4887.7733.5659.9622.4601.4587.7570.7562.2
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward788.80.7607
All purpose644.00.9316
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low810.60.7402
Triple Number Coastal/Long Distance Medium638.90.9391
Triple Number Coastal/Long Distance High584.81.0260
Triple Number Windward/Leeward Low1032.50.5811
Triple Number Windward/Leeward Medium783.20.7661
Triple Number Windward/Leeward High695.50.8627
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance698.30.8592
Triple Number Coastal/Long Distance Low810.60.7402
Triple Number Coastal/Long Distance Medium638.90.9391
Triple Number Coastal/Long Distance High584.81.0260
Triple Number Windward/Leeward Low1032.50.5811
Triple Number Windward/Leeward Medium783.20.7661
Triple Number Windward/Leeward High695.50.8627
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1694.51138.9871.5739.8664.7623.7592.4544.9536.8
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6528
Downwind "popa"0.8332
70% up, 30% down "Ilhabela"0.6981
30% up, 70% down "Ilhabela-inverso"0.7694
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low810.60.7402
Triple Number Coastal/Long Distance Medium638.90.9391
Triple Number Coastal/Long Distance High584.81.0260
Triple Number Windward/Leeward Low1032.50.5811
Triple Number Windward/Leeward Medium783.20.7661
Triple Number Windward/Leeward High695.50.8627
Predominantly Upwind701.40.8555
Predominantly Downwind642.90.9333
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low810.60.7402
Triple Number AP Medium639.00.9390
Triple Number AP High584.81.0260
Triple Number Windward/Leeward Low1079.00.5560
Triple Number Windward/Leeward Medium783.20.7661
Triple Number Windward/Leeward High695.50.8627
Single Number Predominant Upwind728.50.8236
Single Number Predominant Reaching639.20.9387
Single Number Predominant Downwind672.70.8920
Predominant Upwind - Low972.20.6172
Predominant Upwind - Low/Med757.30.7923
Predominant Upwind - Medium682.10.8797
Predominant Upwind - Med/High647.50.9266
Predominant Upwind - High634.90.9451
Predominant Downwind Low978.40.6133
Predominant Downwind Low/Med725.50.8270
Predominant Downwind Medium620.50.9670
Predominant Downwind Med/High559.91.0717
Predominant Downwind High529.41.1335
Predominant Reaching Low875.40.6854
Predominant Reaching Low/Med673.60.8907
Predominant Reaching Medium596.81.0054
Predominant Reaching Med/High556.61.0779
Predominant Reaching High537.31.1167
SA/DSPL Upwind18.73SA/DSPL Downwind31.42
Scoring OptionTODTOT
5-Band Windward/Leeward Low1202.40.4990
5-Band Windward/Leeward Low/Med894.20.6710
5-Band Windward/Leeward Medium771.30.7779
5-Band Windward/Leeward Med/High704.00.8523
5-Band Windward/Leeward High676.30.8872
Windward/Leeward 60-40 Low1206.40.4973
Windward/Leeward 60-40 Low/Med907.00.6615
Windward/Leeward 60-40 Medium792.30.7573
Windward/Leeward 60-40 Med/High732.40.8192
Windward/Leeward 60-40 High709.40.8458
5-Band AP Low896.10.6696
5-Band AP Low/Med713.90.8405
5-Band AP Medium631.50.9502
5-Band AP Med/High590.11.0168
5-Band AP High572.21.0486
5-Band SF Bay Tour - Low1039.30.5773
5-Band SF Bay Tour - Low/Med857.70.6995
5-Band SF Bay Tour - Medium748.50.8016
5-Band SF Bay Tour - Med/High691.60.8675
5-Band SF Bay Tour - High668.00.8982
Chicago-Mac Upwind0.8017
Chicago-Mac All Purpose0.8334
Chicago-Mac Downwind0.8615
Bayview-Mac Cove Island0.6177
Bayview-Mac Shore0.6220
Harvest Moon Regatta558.41.0746
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance698.30.8592
Triple Number Coastal/Long Distance Low810.60.7402
Triple Number Coastal/Long Distance Medium638.90.9391
Triple Number Coastal/Long Distance High584.81.0260
Triple Number Windward/Leeward Low1032.50.5811
Triple Number Windward/Leeward Medium783.20.7661
Triple Number Windward/Leeward High695.50.8627
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1694.51138.9871.5739.8664.7623.7592.4544.9536.8
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance698.30.8592
Triple Number Coastal/Long Distance Low810.60.7402
Triple Number Coastal/Long Distance Medium638.90.9391
Triple Number Coastal/Long Distance High584.81.0260
Triple Number Windward/Leeward Low1032.50.5811
Triple Number Windward/Leeward Medium783.20.7661
Triple Number Windward/Leeward High695.50.8627
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1694.51138.9871.5739.8664.7623.7592.4544.9536.8
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance698.3
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1694.51138.9871.5739.8664.7623.7592.4544.9536.8
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low810.60.7402
Triple Number Coastal/Long Distance Medium638.90.9391
Triple Number Coastal/Long Distance High584.81.0260
Triple Number Windward/Leeward Low1032.50.5811
Triple Number Windward/Leeward Medium783.20.7661
Triple Number Windward/Leeward High695.50.8627
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating698.30.8592
FinRating, kevyt tuuli1183.50.8450
FinRating, kova tuuli576.40.8675
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low810.60.7402
Triple Number Coastal/Long Distance Medium638.90.9391
Triple Number Coastal/Long Distance High584.81.0260
Triple Number Windward/Leeward Low1032.50.5811
Triple Number Windward/Leeward Medium783.20.7661
Triple Number Windward/Leeward High695.50.8627
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8592
Triple Number Coastal/Long Distance Low0.7402
Triple Number Coastal/Long Distance Medium0.9391
Triple Number Coastal/Long Distance High1.0260
Triple Number Windward/Leeward Low0.5811
Triple Number Windward/Leeward Medium0.7661
Triple Number Windward/Leeward High0.8627
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1694.51138.9871.5739.8664.7623.7592.4544.9536.8
For information
General Purpose Handicap (GPH)719.0
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance698.30.8592
Triple Number Coastal/Long Distance Low810.60.7402
Triple Number Coastal/Long Distance Medium638.90.9391
Triple Number Coastal/Long Distance High584.81.0260
Triple Number Windward/Leeward Low1032.50.5811
Triple Number Windward/Leeward Medium783.20.7661
Triple Number Windward/Leeward High695.50.8627
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1694.51138.9871.5739.8664.7623.7592.4544.9536.8
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low810.60.7402
Triple Number Coastal/Long Distance Medium638.90.9391
Triple Number Coastal/Long Distance High584.81.0260
Triple Number Windward/Leeward Low1032.50.5811
Triple Number Windward/Leeward Medium783.20.7661
Triple Number Windward/Leeward High695.50.8627
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance698.30.8592
Triple Number Coastal/Long Distance Low810.60.7402
Triple Number Coastal/Long Distance Medium638.90.9391
Triple Number Coastal/Long Distance High584.81.0260
Triple Number Windward/Leeward Low1032.50.5811
Triple Number Windward/Leeward Medium783.20.7661
Triple Number Windward/Leeward High695.50.8627
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1694.51138.9871.5739.8664.7623.7592.4544.9536.8
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance698.30.8592
Triple Number Coastal/Long Distance Low810.60.7402
Triple Number Coastal/Long Distance Medium638.90.9391
Triple Number Coastal/Long Distance High584.81.0260
Triple Number Windward/Leeward Low1032.50.5811
Triple Number Windward/Leeward Medium783.20.7661
Triple Number Windward/Leeward High695.50.8627
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1694.51138.9871.5739.8664.7623.7592.4544.9536.8
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low810.6
Triple Number Coastal/Long Distance Medium638.9
Triple Number Coastal/Long Distance High584.8
Triple Number Windward/Leeward Low1032.5
Triple Number Windward/Leeward Medium783.2
Triple Number Windward/Leeward High695.5
Predominantly Upwind701.4
Predominantly Downwind642.9
Predominantly Reaching621.3
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance698.30.8592
Triple Number Coastal/Long Distance Low810.60.7402
Triple Number Coastal/Long Distance Medium638.90.9391
Triple Number Coastal/Long Distance High584.81.0260
Triple Number Windward/Leeward Low1032.50.5811
Triple Number Windward/Leeward Medium783.20.7661
Triple Number Windward/Leeward High695.50.8627
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1694.51138.9871.5739.8664.7623.7592.4544.9536.8
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7402
Triple Number Coastal/Long Distance Medium0.9391
Triple Number Coastal/Long Distance High1.0260
Triple Number Windward/Leeward Low0.5811
Triple Number Windward/Leeward Medium0.7661
Triple Number Windward/Leeward High0.8627
Coastal/Long Distance0.8592
Predominantly Upwind0.8555
Predominantly Downwind0.9333
For information
General Purpose Handicap (GPH)719.0
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.9316
Distanseseilas Trippeltall svak vind0.7402
Distanseseilas Trippeltall mellomvind0.9391
Distanseseilas Trippeltall sterk vind1.0260
Pølsebane Trippeltall svak vind0.5811
Pølsebane Trippeltall mellomvind0.7661
Pølsebane Trippeltall sterk vind0.8627
Motvind Singeltall0.8555
Medvind Singeltall0.9333
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low810.60.7402
Triple Number Coastal/Long Distance Medium638.90.9391
Triple Number Coastal/Long Distance High584.81.0260
Triple Number Windward/Leeward Low1032.50.5811
Triple Number Windward/Leeward Medium783.20.7661
Triple Number Windward/Leeward High695.50.8627
Coastal/Long Distance698.30.8592
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind701.40.8555
Predominantly Downwind642.90.9333
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore666.90.8997
Cape Doctor Coastal564.81.0624
Triple Number Coastal/Long Distance Low810.60.7402
Triple Number Coastal/Long Distance Medium638.90.9391
Triple Number Coastal/Long Distance High584.81.0260
Triple Number Windward/Leeward Low1032.50.5811
Triple Number Windward/Leeward Medium783.20.7661
Triple Number Windward/Leeward High695.50.8627
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7402
Triple Number Coastal/Long Distance Medium0.9391
Triple Number Coastal/Long Distance High1.0260
Triple Number Windward/Leeward Low0.5811
Triple Number Windward/Leeward Medium0.7661
Triple Number Windward/Leeward High0.8627
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7402
Triple Number Coastal/Long Distance Medium0.9391
Triple Number Coastal/Long Distance High1.0260
Triple Number Windward/Leeward Low0.5811
Triple Number Windward/Leeward Medium0.7661
Triple Number Windward/Leeward High0.8627
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance698.30.8592
Triple Number Coastal/Long Distance Low810.60.7402
Triple Number Coastal/Long Distance Medium638.90.9391
Triple Number Coastal/Long Distance High584.81.0260
Triple Number Windward/Leeward Low1032.50.5811
Triple Number Windward/Leeward Medium783.20.7661
Triple Number Windward/Leeward High695.50.8627
Predominantly Upwind701.40.8555
Predominantly Downwind642.90.9333
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1694.51138.9871.5739.8664.7623.7592.4544.9536.8
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance698.30.8592
Triple Number Coastal/Long Distance Low810.60.7402
Triple Number Coastal/Long Distance Medium638.90.9391
Triple Number Coastal/Long Distance High584.81.0260
Triple Number Windward/Leeward Low1032.50.5811
Triple Number Windward/Leeward Medium783.20.7661
Triple Number Windward/Leeward High695.50.8627
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1694.51138.9871.5739.8664.7623.7592.4544.9536.8
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low810.60.7402
Triple Number AP Medium639.00.9390
Triple Number AP High584.81.0260
Triple Number Windward/Leeward Low1079.00.5560
Triple Number Windward/Leeward Medium783.20.7661
Triple Number Windward/Leeward High695.50.8627
Single Number Predominant Upwind728.50.8236
Single Number Predominant Reaching639.20.9387
Single Number Predominant Downwind672.70.8920
Predominant Upwind - Low972.20.6172
Predominant Upwind - Low/Med757.30.7923
Predominant Upwind - Medium682.10.8797
Predominant Upwind - Med/High647.50.9266
Predominant Upwind - High634.90.9451
Predominant Downwind Low978.40.6133
Predominant Downwind Low/Med725.50.8270
Predominant Downwind Medium620.50.9670
Predominant Downwind Med/High559.91.0717
Predominant Downwind High529.41.1335
Predominant Reaching Low875.40.6854
Predominant Reaching Low/Med673.60.8907
Predominant Reaching Medium596.81.0054
Predominant Reaching Med/High556.61.0779
Predominant Reaching High537.31.1167
SA/DSPL Upwind18.73SA/DSPL Downwind31.42
Scoring OptionTODTOT
5-Band Windward/Leeward Low1202.40.4990
5-Band Windward/Leeward Low/Med894.20.6710
5-Band Windward/Leeward Medium771.30.7779
5-Band Windward/Leeward Med/High704.00.8523
5-Band Windward/Leeward High676.30.8872
Windward/Leeward 60-40 Low1206.40.4973
Windward/Leeward 60-40 Low/Med907.00.6615
Windward/Leeward 60-40 Medium792.30.7573
Windward/Leeward 60-40 Med/High732.40.8192
Windward/Leeward 60-40 High709.40.8458
5-Band AP Low896.10.6696
5-Band AP Low/Med713.90.8405
5-Band AP Medium631.50.9502
5-Band AP Med/High590.11.0168
5-Band AP High572.21.0486
5-Band SF Bay Tour - Low1039.30.5773
5-Band SF Bay Tour - Low/Med857.70.6995
5-Band SF Bay Tour - Medium748.50.8016
5-Band SF Bay Tour - Med/High691.60.8675
5-Band SF Bay Tour - High668.00.8982
Chicago-Mac Upwind0.8017
Chicago-Mac All Purpose0.8334
Chicago-Mac Downwind0.8615
Bayview-Mac Cove Island0.6177
Bayview-Mac Shore0.6220
Harvest Moon Regatta558.41.0746
Club 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. Beam2.300Draft1.654Displacement4,350Wetted area19.09IMS L7.894LSM07.417Acc. length7.475Sink (kg/mm) 11.03
VCGD-0.247VCGM-0.205RM Rated (kg·m) 36.7Limit of positive stability(°) N/AStability IndexN/ADefault crew weight450Declared crew weight420
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
Club 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.