Non Spin/HSFClub Certificate2025
MerimörköFIN 9631
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 Angles43.8°43.8°41.9°40.5°39.7°39.3°38.9°39.0°40.2°
Beat VMG2.743.764.555.045.265.385.455.495.40
52°4.315.786.797.347.597.707.777.847.84
60°4.616.107.057.567.817.938.018.108.12
75°4.846.337.237.728.028.228.358.538.63
90°4.716.227.187.728.068.348.588.949.16
110°4.135.566.617.407.898.258.609.249.69
120°3.655.106.307.197.758.138.499.209.97
135°3.084.425.616.587.327.818.188.899.66
150°2.523.714.815.756.537.187.658.308.97
Run VMG2.183.214.174.985.796.547.188.028.68
Gybe Angles144.0°144.0°146.0°147.0°170.3°171.7°173.7°176.4°176.2°
APH ToD:546.7CDL: 10.426APH ToT: 1.0975CertNo:
BOAT
ClassFinngulf 41DesignerStrahlmanBuilderFinngulfAge date01/2003Series date02/2002Offset fileFINNGULF41-CRUISER.offData fileFIN9631
HULL
Length Overall12.495 mMaximum Beam3.844 mDraft1.826 mDisplacement8,500 kgDLR5.9943IMS DivisionCruiser/RacerDynamic Allowance0.210%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 3 bladesDiameter0.454m
CREW
Maximum weight470 kg(declared)Minimum weight340 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail50.9851.91Headsail Luffed48.3048.30Headsail FlyingSymmetricAsymmetric
STORM SAIL AREAS (m²)
Trysail15.12Storm Jib13.89Heavy Weather Jib37.49
SAIL LIMITS
Headsails6
✱ Zero set flying
Spinnakers0
✱ No spinnaker pole aboard
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.
Non Spin/HSFClub Certificate2025
MerimörköFIN 9631
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 VMG1316.3956.6791.3714.9683.9668.8660.8655.2666.4
52°835.7622.9530.2490.5474.5467.3463.2458.9459.1
60°780.6590.1510.3476.2460.8453.9449.7444.5443.4
75°744.3569.0497.9466.2449.1438.0431.0422.2417.3
90°764.2579.1501.6466.3446.4431.5419.4402.9393.1
110°872.1647.7544.8486.2456.3436.2418.8389.8371.5
120°985.4705.3571.7501.0464.8442.6424.1391.1361.0
135°1170.3814.4641.3547.0491.8460.9440.2405.0372.8
150°1427.3971.5747.9625.6551.4501.3470.8434.0401.2
Run VMG1652.01121.8863.6722.4621.5550.3501.6449.0414.9
Selected Courses
Windward / Leeward1481.31039.2827.4718.6652.7609.6581.2552.1540.7
All purpose1090.4784.0640.0567.1526.9501.7484.8463.7451.6
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward681.90.8799
All purpose546.71.0975
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low712.00.8427
Triple Number Coastal/Long Distance Medium543.41.1041
Triple Number Coastal/Long Distance High481.11.2471
Triple Number Windward/Leeward Low933.30.6429
Triple Number Windward/Leeward Medium678.40.8844
Triple Number Windward/Leeward High577.41.0392
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance599.61.0007
Triple Number Coastal/Long Distance Low712.00.8427
Triple Number Coastal/Long Distance Medium543.41.1041
Triple Number Coastal/Long Distance High481.11.2471
Triple Number Windward/Leeward Low933.30.6429
Triple Number Windward/Leeward Medium678.40.8844
Triple Number Windward/Leeward High577.41.0392
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1607.81047.5778.5644.1564.6522.0490.6443.3428.0
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8185
Downwind "popa"0.8695
70% up, 30% down "Ilhabela"0.8332
30% up, 70% down "Ilhabela-inverso"0.8536
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low712.00.8427
Triple Number Coastal/Long Distance Medium543.41.1041
Triple Number Coastal/Long Distance High481.11.2471
Triple Number Windward/Leeward Low933.30.6429
Triple Number Windward/Leeward Medium678.40.8844
Triple Number Windward/Leeward High577.41.0392
Predominantly Upwind577.61.0388
Predominantly Downwind573.01.0471
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low712.00.8427
Triple Number AP Medium543.51.1040
Triple Number AP High481.11.2471
Triple Number Windward/Leeward Low977.50.6138
Triple Number Windward/Leeward Medium678.40.8844
Triple Number Windward/Leeward High577.41.0392
Single Number Predominant Upwind600.10.9998
Single Number Predominant Reaching542.61.1058
Single Number Predominant Downwind602.30.9962
Predominant Upwind - Low824.30.7279
Predominant Upwind - Low/Med631.10.9508
Predominant Upwind - Medium558.81.0738
Predominant Upwind - Med/High522.71.1480
Predominant Upwind - High508.31.1805
Predominant Downwind Low916.30.6548
Predominant Downwind Low/Med662.10.9062
Predominant Downwind Medium550.71.0894
Predominant Downwind Med/High481.11.2472
Predominant Downwind High446.41.3441
Predominant Reaching Low764.20.7851
Predominant Reaching Low/Med579.31.0357
Predominant Reaching Medium504.71.1889
Predominant Reaching Med/High461.21.3009
Predominant Reaching High438.71.3678
SA/DSPL Upwind23.67SA/DSPL Downwind23.67
Scoring OptionTODTOT
5-Band Windward/Leeward Low1097.50.5467
5-Band Windward/Leeward Low/Med794.50.7552
5-Band Windward/Leeward Medium665.00.9022
5-Band Windward/Leeward Med/High587.11.0220
5-Band Windward/Leeward High555.11.0808
Windward/Leeward 60-40 Low1079.00.5561
Windward/Leeward 60-40 Low/Med790.10.7594
Windward/Leeward 60-40 Medium670.70.8946
Windward/Leeward 60-40 Med/High602.30.9962
Windward/Leeward 60-40 High575.71.0421
5-Band AP Low797.70.7521
5-Band AP Low/Med618.80.9696
5-Band AP Medium535.31.1210
5-Band AP Med/High487.61.2304
5-Band AP High465.21.2897
5-Band SF Bay Tour - Low933.60.6427
5-Band SF Bay Tour - Low/Med753.70.7960
5-Band SF Bay Tour - Medium638.80.9392
5-Band SF Bay Tour - Med/High573.51.0461
5-Band SF Bay Tour - High546.51.0980
Chicago-Mac Upwind0.9696
Chicago-Mac All Purpose0.9681
Chicago-Mac Downwind0.9547
Bayview-Mac Cove Island0.6956
Bayview-Mac Shore0.7048
Harvest Moon Regatta473.91.2661
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance599.61.0007
Triple Number Coastal/Long Distance Low712.00.8427
Triple Number Coastal/Long Distance Medium543.41.1041
Triple Number Coastal/Long Distance High481.11.2471
Triple Number Windward/Leeward Low933.30.6429
Triple Number Windward/Leeward Medium678.40.8844
Triple Number Windward/Leeward High577.41.0392
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1607.81047.5778.5644.1564.6522.0490.6443.3428.0
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance599.61.0007
Triple Number Coastal/Long Distance Low712.00.8427
Triple Number Coastal/Long Distance Medium543.41.1041
Triple Number Coastal/Long Distance High481.11.2471
Triple Number Windward/Leeward Low933.30.6429
Triple Number Windward/Leeward Medium678.40.8844
Triple Number Windward/Leeward High577.41.0392
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1607.81047.5778.5644.1564.6522.0490.6443.3428.0
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance599.6
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1607.81047.5778.5644.1564.6522.0490.6443.3428.0
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low712.00.8427
Triple Number Coastal/Long Distance Medium543.41.1041
Triple Number Coastal/Long Distance High481.11.2471
Triple Number Windward/Leeward Low933.30.6429
Triple Number Windward/Leeward Medium678.40.8844
Triple Number Windward/Leeward High577.41.0392
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating599.61.0007
FinRating, kevyt tuuli1079.30.9266
FinRating, kova tuuli468.91.0663
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low712.00.8427
Triple Number Coastal/Long Distance Medium543.41.1041
Triple Number Coastal/Long Distance High481.11.2471
Triple Number Windward/Leeward Low933.30.6429
Triple Number Windward/Leeward Medium678.40.8844
Triple Number Windward/Leeward High577.41.0392
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance1.0007
Triple Number Coastal/Long Distance Low0.8427
Triple Number Coastal/Long Distance Medium1.1041
Triple Number Coastal/Long Distance High1.2471
Triple Number Windward/Leeward Low0.6429
Triple Number Windward/Leeward Medium0.8844
Triple Number Windward/Leeward High1.0392
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1607.81047.5778.5644.1564.6522.0490.6443.3428.0
For information
General Purpose Handicap (GPH)615.6
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance599.61.0007
Triple Number Coastal/Long Distance Low712.00.8427
Triple Number Coastal/Long Distance Medium543.41.1041
Triple Number Coastal/Long Distance High481.11.2471
Triple Number Windward/Leeward Low933.30.6429
Triple Number Windward/Leeward Medium678.40.8844
Triple Number Windward/Leeward High577.41.0392
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1607.81047.5778.5644.1564.6522.0490.6443.3428.0
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low712.00.8427
Triple Number Coastal/Long Distance Medium543.41.1041
Triple Number Coastal/Long Distance High481.11.2471
Triple Number Windward/Leeward Low933.30.6429
Triple Number Windward/Leeward Medium678.40.8844
Triple Number Windward/Leeward High577.41.0392
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance599.61.0007
Triple Number Coastal/Long Distance Low712.00.8427
Triple Number Coastal/Long Distance Medium543.41.1041
Triple Number Coastal/Long Distance High481.11.2471
Triple Number Windward/Leeward Low933.30.6429
Triple Number Windward/Leeward Medium678.40.8844
Triple Number Windward/Leeward High577.41.0392
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1607.81047.5778.5644.1564.6522.0490.6443.3428.0
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance599.61.0007
Triple Number Coastal/Long Distance Low712.00.8427
Triple Number Coastal/Long Distance Medium543.41.1041
Triple Number Coastal/Long Distance High481.11.2471
Triple Number Windward/Leeward Low933.30.6429
Triple Number Windward/Leeward Medium678.40.8844
Triple Number Windward/Leeward High577.41.0392
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1607.81047.5778.5644.1564.6522.0490.6443.3428.0
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low712.0
Triple Number Coastal/Long Distance Medium543.4
Triple Number Coastal/Long Distance High481.1
Triple Number Windward/Leeward Low933.3
Triple Number Windward/Leeward Medium678.4
Triple Number Windward/Leeward High577.4
Predominantly Upwind577.6
Predominantly Downwind573.0
Predominantly Reaching537.2
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance599.61.0007
Triple Number Coastal/Long Distance Low712.00.8427
Triple Number Coastal/Long Distance Medium543.41.1041
Triple Number Coastal/Long Distance High481.11.2471
Triple Number Windward/Leeward Low933.30.6429
Triple Number Windward/Leeward Medium678.40.8844
Triple Number Windward/Leeward High577.41.0392
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1607.81047.5778.5644.1564.6522.0490.6443.3428.0
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8427
Triple Number Coastal/Long Distance Medium1.1041
Triple Number Coastal/Long Distance High1.2471
Triple Number Windward/Leeward Low0.6429
Triple Number Windward/Leeward Medium0.8844
Triple Number Windward/Leeward High1.0392
Coastal/Long Distance1.0007
Predominantly Upwind1.0388
Predominantly Downwind1.0471
For information
General Purpose Handicap (GPH)615.6
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0975
Distanseseilas Trippeltall svak vind0.8427
Distanseseilas Trippeltall mellomvind1.1041
Distanseseilas Trippeltall sterk vind1.2471
Pølsebane Trippeltall svak vind0.6429
Pølsebane Trippeltall mellomvind0.8844
Pølsebane Trippeltall sterk vind1.0392
Motvind Singeltall1.0388
Medvind Singeltall1.0471
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low712.00.8427
Triple Number Coastal/Long Distance Medium543.41.1041
Triple Number Coastal/Long Distance High481.11.2471
Triple Number Windward/Leeward Low933.30.6429
Triple Number Windward/Leeward Medium678.40.8844
Triple Number Windward/Leeward High577.41.0392
Coastal/Long Distance599.61.0007
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind577.61.0388
Predominantly Downwind573.01.0471
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore544.11.1028
Cape Doctor Coastal455.21.3181
Triple Number Coastal/Long Distance Low712.00.8427
Triple Number Coastal/Long Distance Medium543.41.1041
Triple Number Coastal/Long Distance High481.11.2471
Triple Number Windward/Leeward Low933.30.6429
Triple Number Windward/Leeward Medium678.40.8844
Triple Number Windward/Leeward High577.41.0392
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8427
Triple Number Coastal/Long Distance Medium1.1041
Triple Number Coastal/Long Distance High1.2471
Triple Number Windward/Leeward Low0.6429
Triple Number Windward/Leeward Medium0.8844
Triple Number Windward/Leeward High1.0392
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8427
Triple Number Coastal/Long Distance Medium1.1041
Triple Number Coastal/Long Distance High1.2471
Triple Number Windward/Leeward Low0.6429
Triple Number Windward/Leeward Medium0.8844
Triple Number Windward/Leeward High1.0392
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance599.61.0007
Triple Number Coastal/Long Distance Low712.00.8427
Triple Number Coastal/Long Distance Medium543.41.1041
Triple Number Coastal/Long Distance High481.11.2471
Triple Number Windward/Leeward Low933.30.6429
Triple Number Windward/Leeward Medium678.40.8844
Triple Number Windward/Leeward High577.41.0392
Predominantly Upwind577.61.0388
Predominantly Downwind573.01.0471
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1607.81047.5778.5644.1564.6522.0490.6443.3428.0
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance599.61.0007
Triple Number Coastal/Long Distance Low712.00.8427
Triple Number Coastal/Long Distance Medium543.41.1041
Triple Number Coastal/Long Distance High481.11.2471
Triple Number Windward/Leeward Low933.30.6429
Triple Number Windward/Leeward Medium678.40.8844
Triple Number Windward/Leeward High577.41.0392
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1607.81047.5778.5644.1564.6522.0490.6443.3428.0
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low712.00.8427
Triple Number AP Medium543.51.1040
Triple Number AP High481.11.2471
Triple Number Windward/Leeward Low977.50.6138
Triple Number Windward/Leeward Medium678.40.8844
Triple Number Windward/Leeward High577.41.0392
Single Number Predominant Upwind600.10.9998
Single Number Predominant Reaching542.61.1058
Single Number Predominant Downwind602.30.9962
Predominant Upwind - Low824.30.7279
Predominant Upwind - Low/Med631.10.9508
Predominant Upwind - Medium558.81.0738
Predominant Upwind - Med/High522.71.1480
Predominant Upwind - High508.31.1805
Predominant Downwind Low916.30.6548
Predominant Downwind Low/Med662.10.9062
Predominant Downwind Medium550.71.0894
Predominant Downwind Med/High481.11.2472
Predominant Downwind High446.41.3441
Predominant Reaching Low764.20.7851
Predominant Reaching Low/Med579.31.0357
Predominant Reaching Medium504.71.1889
Predominant Reaching Med/High461.21.3009
Predominant Reaching High438.71.3678
SA/DSPL Upwind23.67SA/DSPL Downwind23.67
Scoring OptionTODTOT
5-Band Windward/Leeward Low1097.50.5467
5-Band Windward/Leeward Low/Med794.50.7552
5-Band Windward/Leeward Medium665.00.9022
5-Band Windward/Leeward Med/High587.11.0220
5-Band Windward/Leeward High555.11.0808
Windward/Leeward 60-40 Low1079.00.5561
Windward/Leeward 60-40 Low/Med790.10.7594
Windward/Leeward 60-40 Medium670.70.8946
Windward/Leeward 60-40 Med/High602.30.9962
Windward/Leeward 60-40 High575.71.0421
5-Band AP Low797.70.7521
5-Band AP Low/Med618.80.9696
5-Band AP Medium535.31.1210
5-Band AP Med/High487.61.2304
5-Band AP High465.21.2897
5-Band SF Bay Tour - Low933.60.6427
5-Band SF Bay Tour - Low/Med753.70.7960
5-Band SF Bay Tour - Medium638.80.9392
5-Band SF Bay Tour - Med/High573.51.0461
5-Band SF Bay Tour - High546.51.0980
Chicago-Mac Upwind0.9696
Chicago-Mac All Purpose0.9681
Chicago-Mac Downwind0.9547
Bayview-Mac Cove Island0.6956
Bayview-Mac Shore0.7048
Harvest Moon Regatta473.91.2661
Non Spin/HSFClub Certificate2025
MerimörköFIN 9631
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassFinngulf 41Measurement11/05/2022HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA12.495Max. Beam3.844Draft1.826Displacement8,500Wetted area33.15IMS L11.315LSM011.234Acc. length12.493Sink (kg/mm) 25.04
VCGD0.010VCGM0.007RM Rated (kg·m) 217.3Limit of positive stability(°) N/AStability IndexN/ADefault crew weight813Declared crew weight470
PROPELLER
Propeller TypeFolding 3 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.454PBWPIPA0.0008
EDLST1ST2
ST3ST4ST5
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays1CheckstaysSpreaders2Rotating mastNo
P16.000IG16.664ISP16.674MDT10.140MDL10.205MDT2MDL2TLTaperMWGO
E5.400J4.350BAS1.560FSDSFJSPLWPLTPS5.180BDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date11/05/2022
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Non Spin/HSFClub Certificate2025
MerimörköFIN 9631
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.181.152.023.454.4650.98
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment10.070.721.442.974.616.3115.79NoNo 48.30
CRUISER/RACER REQUIREMENTS*
Accommodation length12.5 mTable area0.55 m²Headroom1.83 mMinimum number of berths5Personal gear stowage0.20 m³Fresh water capacity162 lMinimum number of seats in cockpit5Food stowage0.30 m³Fuel capacity100 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.