Club Certificate2025
OrcaFIN 797
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 Angles43.6°43.6°41.2°40.4°40.4°40.5°40.5°41.2°43.1°
Beat VMG1.932.683.293.693.944.064.104.093.93
52°3.024.094.895.445.765.925.986.025.90
60°3.204.315.115.665.966.126.206.266.21
75°3.304.465.295.846.156.356.486.626.65
90°3.484.735.616.076.266.446.636.917.07
110°3.564.855.796.286.586.816.957.177.26
120°3.404.705.696.266.616.907.157.487.70
135°3.044.265.276.016.456.817.147.768.39
150°2.553.684.695.536.136.516.857.518.23
Run VMG2.213.184.074.835.475.976.356.987.58
Gybe Angles147.8°147.8°151.6°154.8°162.1°168.7°177.2°177.9°177.7°
APH ToD:672.6CDL: 6.287APH ToT: 0.8921CertNo:
BOAT
ClassMurena 30DesignerSodegren HakanBuilderBoatsman SunsailAge date01/1977Series date01/1972Offset fileUS14080.OFFData fileFIN797
HULL
Length Overall9.141 mMaximum Beam3.164 mDraft1.681 mDisplacement3,200 kgDLR8.6823IMS DivisionCruiser/RacerDynamic Allowance0.330%Age Allowance0.487%
PROPELLER
InstallationStrutTypeSolid 3 bladesDiameter0.320m
CREW
Maximum weight250 kg(declared)Minimum weight130 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail21.9422.47Headsail Luffed14.3814.38Headsail FlyingSymmetric53.6755.52Asymmetric
STORM SAIL AREAS (m²)
Trysail5.88Storm Jib6.62Heavy Weather Jib17.86
SAIL LIMITS
Headsails5
✱ One set on the forestay
✱ Woven polyester sails
Spinnakers4
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
OrcaFIN 797
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 VMG1867.41341.91095.8974.9914.3887.3877.2881.1916.7
52°1192.6879.6736.7661.8625.0608.5601.6598.4610.1
60°1124.5835.0704.4636.4603.8588.1580.4575.2579.4
75°1092.1808.0680.0615.9584.9567.1555.8544.1541.3
90°1033.5761.7641.6593.4575.4558.7542.6521.1509.5
110°1012.5741.9621.8573.1547.0528.9517.7502.4496.1
120°1059.0766.2632.9575.4544.3521.5503.5481.3467.5
135°1182.6844.6683.1598.7558.0529.0504.5464.0429.2
150°1411.1979.5767.7650.5587.7552.7525.5479.5437.3
Run VMG1632.31131.0885.2746.0657.8602.8566.5515.8474.9
Selected Courses
Windward / Leeward1749.11236.5990.5860.4786.0745.0721.8698.4695.8
All purpose1329.6956.3781.2693.3647.0620.8604.4585.4580.0
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward824.90.7274
All purpose672.60.8921
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low868.70.6907
Triple Number Coastal/Long Distance Medium667.00.8995
Triple Number Coastal/Long Distance High601.40.9977
Triple Number Windward/Leeward Low1113.60.5388
Triple Number Windward/Leeward Medium817.70.7338
Triple Number Windward/Leeward High718.80.8347
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance730.10.8218
Triple Number Coastal/Long Distance Low868.70.6907
Triple Number Coastal/Long Distance Medium667.00.8995
Triple Number Coastal/Long Distance High601.40.9977
Triple Number Windward/Leeward Low1113.60.5388
Triple Number Windward/Leeward Medium817.70.7338
Triple Number Windward/Leeward High718.80.8347
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1835.81225.9929.7777.1690.9644.1609.1556.0546.5
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6024
Downwind "popa"0.8227
70% up, 30% down "Ilhabela"0.6550
30% up, 70% down "Ilhabela-inverso"0.7414
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low868.70.6907
Triple Number Coastal/Long Distance Medium667.00.8995
Triple Number Coastal/Long Distance High601.40.9977
Triple Number Windward/Leeward Low1113.60.5388
Triple Number Windward/Leeward Medium817.70.7338
Triple Number Windward/Leeward High718.80.8347
Predominantly Upwind742.20.8084
Predominantly Downwind663.90.9038
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low868.70.6907
Triple Number AP Medium667.10.8994
Triple Number AP High601.40.9977
Triple Number Windward/Leeward Low1164.10.5154
Triple Number Windward/Leeward Medium817.70.7338
Triple Number Windward/Leeward High718.80.8347
Single Number Predominant Upwind775.20.7740
Single Number Predominant Reaching666.60.9001
Single Number Predominant Downwind694.20.8643
Predominant Upwind - Low1078.60.5563
Predominant Upwind - Low/Med817.50.7339
Predominant Upwind - Medium717.30.8365
Predominant Upwind - Med/High671.00.8942
Predominant Upwind - High659.00.9105
Predominant Downwind Low1018.90.5889
Predominant Downwind Low/Med750.90.7991
Predominant Downwind Medium639.40.9383
Predominant Downwind Med/High573.91.0456
Predominant Downwind High539.11.1129
Predominant Reaching Low927.20.6471
Predominant Reaching Low/Med705.50.8504
Predominant Reaching Medium621.10.9661
Predominant Reaching Med/High573.81.0457
Predominant Reaching High549.41.0922
SA/DSPL Upwind16.66SA/DSPL Downwind34.68
Scoring OptionTODTOT
5-Band Windward/Leeward Low1303.30.4604
5-Band Windward/Leeward Low/Med950.70.6311
5-Band Windward/Leeward Medium803.20.7470
5-Band Windward/Leeward Med/High727.20.8251
5-Band Windward/Leeward High702.00.8547
Windward/Leeward 60-40 Low1325.00.4528
Windward/Leeward 60-40 Low/Med973.10.6166
Windward/Leeward 60-40 Medium829.00.7238
Windward/Leeward 60-40 Med/High758.30.7913
Windward/Leeward 60-40 High738.90.8120
5-Band AP Low956.00.6276
5-Band AP Low/Med756.20.7935
5-Band AP Medium657.90.9120
5-Band AP Med/High607.60.9876
5-Band AP High587.81.0208
5-Band SF Bay Tour - Low1128.50.5317
5-Band SF Bay Tour - Low/Med915.00.6558
5-Band SF Bay Tour - Medium781.20.7680
5-Band SF Bay Tour - Med/High714.40.8399
5-Band SF Bay Tour - High692.60.8663
Chicago-Mac Upwind0.7498
Chicago-Mac All Purpose0.7928
Chicago-Mac Downwind0.8341
Bayview-Mac Cove Island0.5771
Bayview-Mac Shore0.5803
Harvest Moon Regatta577.71.0385
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance730.10.8218
Triple Number Coastal/Long Distance Low868.70.6907
Triple Number Coastal/Long Distance Medium667.00.8995
Triple Number Coastal/Long Distance High601.40.9977
Triple Number Windward/Leeward Low1113.60.5388
Triple Number Windward/Leeward Medium817.70.7338
Triple Number Windward/Leeward High718.80.8347
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1835.81225.9929.7777.1690.9644.1609.1556.0546.5
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance730.10.8218
Triple Number Coastal/Long Distance Low868.70.6907
Triple Number Coastal/Long Distance Medium667.00.8995
Triple Number Coastal/Long Distance High601.40.9977
Triple Number Windward/Leeward Low1113.60.5388
Triple Number Windward/Leeward Medium817.70.7338
Triple Number Windward/Leeward High718.80.8347
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1835.81225.9929.7777.1690.9644.1609.1556.0546.5
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance730.1
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1835.81225.9929.7777.1690.9644.1609.1556.0546.5
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low868.70.6907
Triple Number Coastal/Long Distance Medium667.00.8995
Triple Number Coastal/Long Distance High601.40.9977
Triple Number Windward/Leeward Low1113.60.5388
Triple Number Windward/Leeward Medium817.70.7338
Triple Number Windward/Leeward High718.80.8347
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating730.10.8218
FinRating, kevyt tuuli1277.80.7826
FinRating, kova tuuli591.50.8452
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low868.70.6907
Triple Number Coastal/Long Distance Medium667.00.8995
Triple Number Coastal/Long Distance High601.40.9977
Triple Number Windward/Leeward Low1113.60.5388
Triple Number Windward/Leeward Medium817.70.7338
Triple Number Windward/Leeward High718.80.8347
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8218
Triple Number Coastal/Long Distance Low0.6907
Triple Number Coastal/Long Distance Medium0.8995
Triple Number Coastal/Long Distance High0.9977
Triple Number Windward/Leeward Low0.5388
Triple Number Windward/Leeward Medium0.7338
Triple Number Windward/Leeward High0.8347
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1835.81225.9929.7777.1690.9644.1609.1556.0546.5
For information
General Purpose Handicap (GPH)755.7
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance730.10.8218
Triple Number Coastal/Long Distance Low868.70.6907
Triple Number Coastal/Long Distance Medium667.00.8995
Triple Number Coastal/Long Distance High601.40.9977
Triple Number Windward/Leeward Low1113.60.5388
Triple Number Windward/Leeward Medium817.70.7338
Triple Number Windward/Leeward High718.80.8347
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1835.81225.9929.7777.1690.9644.1609.1556.0546.5
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low868.70.6907
Triple Number Coastal/Long Distance Medium667.00.8995
Triple Number Coastal/Long Distance High601.40.9977
Triple Number Windward/Leeward Low1113.60.5388
Triple Number Windward/Leeward Medium817.70.7338
Triple Number Windward/Leeward High718.80.8347
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance730.10.8218
Triple Number Coastal/Long Distance Low868.70.6907
Triple Number Coastal/Long Distance Medium667.00.8995
Triple Number Coastal/Long Distance High601.40.9977
Triple Number Windward/Leeward Low1113.60.5388
Triple Number Windward/Leeward Medium817.70.7338
Triple Number Windward/Leeward High718.80.8347
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1835.81225.9929.7777.1690.9644.1609.1556.0546.5
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance730.10.8218
Triple Number Coastal/Long Distance Low868.70.6907
Triple Number Coastal/Long Distance Medium667.00.8995
Triple Number Coastal/Long Distance High601.40.9977
Triple Number Windward/Leeward Low1113.60.5388
Triple Number Windward/Leeward Medium817.70.7338
Triple Number Windward/Leeward High718.80.8347
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1835.81225.9929.7777.1690.9644.1609.1556.0546.5
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low868.7
Triple Number Coastal/Long Distance Medium667.0
Triple Number Coastal/Long Distance High601.4
Triple Number Windward/Leeward Low1113.6
Triple Number Windward/Leeward Medium817.7
Triple Number Windward/Leeward High718.8
Predominantly Upwind742.2
Predominantly Downwind663.9
Predominantly Reaching644.9
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance730.10.8218
Triple Number Coastal/Long Distance Low868.70.6907
Triple Number Coastal/Long Distance Medium667.00.8995
Triple Number Coastal/Long Distance High601.40.9977
Triple Number Windward/Leeward Low1113.60.5388
Triple Number Windward/Leeward Medium817.70.7338
Triple Number Windward/Leeward High718.80.8347
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1835.81225.9929.7777.1690.9644.1609.1556.0546.5
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6907
Triple Number Coastal/Long Distance Medium0.8995
Triple Number Coastal/Long Distance High0.9977
Triple Number Windward/Leeward Low0.5388
Triple Number Windward/Leeward Medium0.7338
Triple Number Windward/Leeward High0.8347
Coastal/Long Distance0.8218
Predominantly Upwind0.8084
Predominantly Downwind0.9038
For information
General Purpose Handicap (GPH)755.7
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.8921
Distanseseilas Trippeltall svak vind0.6907
Distanseseilas Trippeltall mellomvind0.8995
Distanseseilas Trippeltall sterk vind0.9977
Pølsebane Trippeltall svak vind0.5388
Pølsebane Trippeltall mellomvind0.7338
Pølsebane Trippeltall sterk vind0.8347
Motvind Singeltall0.8084
Medvind Singeltall0.9038
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low868.70.6907
Triple Number Coastal/Long Distance Medium667.00.8995
Triple Number Coastal/Long Distance High601.40.9977
Triple Number Windward/Leeward Low1113.60.5388
Triple Number Windward/Leeward Medium817.70.7338
Triple Number Windward/Leeward High718.80.8347
Coastal/Long Distance730.10.8218
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind742.20.8084
Predominantly Downwind663.90.9038
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore696.60.8613
Cape Doctor Coastal581.71.0315
Triple Number Coastal/Long Distance Low868.70.6907
Triple Number Coastal/Long Distance Medium667.00.8995
Triple Number Coastal/Long Distance High601.40.9977
Triple Number Windward/Leeward Low1113.60.5388
Triple Number Windward/Leeward Medium817.70.7338
Triple Number Windward/Leeward High718.80.8347
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6907
Triple Number Coastal/Long Distance Medium0.8995
Triple Number Coastal/Long Distance High0.9977
Triple Number Windward/Leeward Low0.5388
Triple Number Windward/Leeward Medium0.7338
Triple Number Windward/Leeward High0.8347
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6907
Triple Number Coastal/Long Distance Medium0.8995
Triple Number Coastal/Long Distance High0.9977
Triple Number Windward/Leeward Low0.5388
Triple Number Windward/Leeward Medium0.7338
Triple Number Windward/Leeward High0.8347
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance730.10.8218
Triple Number Coastal/Long Distance Low868.70.6907
Triple Number Coastal/Long Distance Medium667.00.8995
Triple Number Coastal/Long Distance High601.40.9977
Triple Number Windward/Leeward Low1113.60.5388
Triple Number Windward/Leeward Medium817.70.7338
Triple Number Windward/Leeward High718.80.8347
Predominantly Upwind742.20.8084
Predominantly Downwind663.90.9038
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1835.81225.9929.7777.1690.9644.1609.1556.0546.5
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance730.10.8218
Triple Number Coastal/Long Distance Low868.70.6907
Triple Number Coastal/Long Distance Medium667.00.8995
Triple Number Coastal/Long Distance High601.40.9977
Triple Number Windward/Leeward Low1113.60.5388
Triple Number Windward/Leeward Medium817.70.7338
Triple Number Windward/Leeward High718.80.8347
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1835.81225.9929.7777.1690.9644.1609.1556.0546.5
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low868.70.6907
Triple Number AP Medium667.10.8994
Triple Number AP High601.40.9977
Triple Number Windward/Leeward Low1164.10.5154
Triple Number Windward/Leeward Medium817.70.7338
Triple Number Windward/Leeward High718.80.8347
Single Number Predominant Upwind775.20.7740
Single Number Predominant Reaching666.60.9001
Single Number Predominant Downwind694.20.8643
Predominant Upwind - Low1078.60.5563
Predominant Upwind - Low/Med817.50.7339
Predominant Upwind - Medium717.30.8365
Predominant Upwind - Med/High671.00.8942
Predominant Upwind - High659.00.9105
Predominant Downwind Low1018.90.5889
Predominant Downwind Low/Med750.90.7991
Predominant Downwind Medium639.40.9383
Predominant Downwind Med/High573.91.0456
Predominant Downwind High539.11.1129
Predominant Reaching Low927.20.6471
Predominant Reaching Low/Med705.50.8504
Predominant Reaching Medium621.10.9661
Predominant Reaching Med/High573.81.0457
Predominant Reaching High549.41.0922
SA/DSPL Upwind16.66SA/DSPL Downwind34.68
Scoring OptionTODTOT
5-Band Windward/Leeward Low1303.30.4604
5-Band Windward/Leeward Low/Med950.70.6311
5-Band Windward/Leeward Medium803.20.7470
5-Band Windward/Leeward Med/High727.20.8251
5-Band Windward/Leeward High702.00.8547
Windward/Leeward 60-40 Low1325.00.4528
Windward/Leeward 60-40 Low/Med973.10.6166
Windward/Leeward 60-40 Medium829.00.7238
Windward/Leeward 60-40 Med/High758.30.7913
Windward/Leeward 60-40 High738.90.8120
5-Band AP Low956.00.6276
5-Band AP Low/Med756.20.7935
5-Band AP Medium657.90.9120
5-Band AP Med/High607.60.9876
5-Band AP High587.81.0208
5-Band SF Bay Tour - Low1128.50.5317
5-Band SF Bay Tour - Low/Med915.00.6558
5-Band SF Bay Tour - Medium781.20.7680
5-Band SF Bay Tour - Med/High714.40.8399
5-Band SF Bay Tour - High692.60.8663
Chicago-Mac Upwind0.7498
Chicago-Mac All Purpose0.7928
Chicago-Mac Downwind0.8341
Bayview-Mac Cove Island0.5771
Bayview-Mac Shore0.5803
Harvest Moon Regatta577.71.0385
Club Certificate2025
OrcaFIN 797
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassMurena 30MeasurementHINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA9.141Max. Beam3.164Draft1.681Displacement3,200Wetted area16.58IMS L7.239LSM07.169Acc. length9.141Sink (kg/mm) 11.43
VCGD-0.001VCGM0.024RM Rated (kg·m) 45.2Limit of positive stability(°) N/AStability IndexN/ADefault crew weight428Declared crew weight250
PROPELLER
Propeller TypeSolid 3 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.320PBW0.080PIPA0.0124
EDLST1ST2
ST3ST4ST5
RIG
Forestay tensionForwardInner stayAdjustableMast materialSingle headsail furlerYesMainsail furlerArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays5CheckstaysSpreaders4Rotating mastNo
P10.500IG11.500ISP11.500MDT10.100MDL10.150MDT2MDL2TLTaperMWGO
E3.200J4.000BAS1.000FSDSFJ0.250SPL3.500WPLTPS5.000BDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date30/07/2025
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
OrcaFIN 797
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment00.030.801.402.502.8021.94
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment00.000.000.000.000.002.909.74NoNo 14.38
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment011.5011.5011.506.004.0053.67
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.