Double HandedClub Certificate2025
BellonaSWE 59
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 Angles43.7°43.7°42.4°41.7°41.5°41.7°41.8°42.6°45.6°
Beat VMG2.733.594.114.344.444.484.524.504.26
52°4.255.516.196.466.606.666.726.766.63
60°4.555.836.496.756.886.967.027.097.05
75°4.766.086.757.057.237.357.467.627.69
90°4.656.026.807.207.477.707.898.218.44
110°4.325.796.777.237.507.768.068.689.31
120°4.155.646.717.297.738.078.388.999.60
135°3.535.006.237.047.608.168.7810.1811.66
150°2.874.145.306.317.107.658.229.7212.56
Run VMG2.493.594.595.476.246.847.348.4610.88
Gybe Angles137.7°137.7°146.9°150.1°156.8°165.4°166.3°156.1°149.6°
APH ToD:576.8CDL: 7.740APH ToT: 1.0401CertNo:
BOAT
ClassSK30DesignerK-E SjögrenBuilderErikssons båtvarvAge date01/1925Series date01/1925Offset fileSWE59.offData fileSWE59
HULL
Length Overall12.000 mMaximum Beam1.760 mDraft1.223 mDisplacement2,250 kgDLR4.0091IMS DivisionPerformanceDynamic Allowance0.030%Age Allowance0.487%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight160 kg(declared)Minimum weight120 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail26.2426.82Headsail Luffed20.0020.00Headsail FlyingSymmetric54.2254.22Asymmetric
STORM SAIL AREAS (m²)
Trysail7.48Storm Jib4.71Heavy Weather Jib12.71
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.
ORC Ref  04140003W7HIssued on 29/07/2025Valid until 31/12/2025
VPP ver: 2025 1.01 | © ORC | www.orc.org
Double HandedClub Certificate2025
BellonaSWE 59
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 VMG1316.71002.9876.5829.8810.1803.5797.2800.7845.8
52°846.2653.9581.4556.9545.8540.5535.7532.3542.8
60°792.0617.6554.5533.5523.1517.6512.6507.6510.4
75°756.8592.2533.0510.3497.8489.5482.5472.3468.3
90°774.3597.9529.5500.0482.2467.7456.2438.6426.6
110°834.1622.3532.0497.9479.8464.2446.7414.8386.6
120°868.5638.2536.5493.7465.7446.3429.7400.5374.9
135°1021.0720.0578.1511.6473.7441.0410.2353.7308.8
150°1252.9868.6679.1570.4507.4470.9437.7370.6286.6
Run VMG1448.41002.9784.1658.6577.2526.2490.2425.4330.9
Selected Courses
Windward / Leeward1377.81002.9830.3744.2693.6664.9643.7613.1588.3
All purpose1030.9764.4646.8593.0562.6543.6527.5502.1485.4
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward718.10.8355
All purpose576.81.0401
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low705.60.8504
Triple Number Coastal/Long Distance Medium575.01.0435
Triple Number Coastal/Long Distance High522.01.1494
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium714.70.8395
Triple Number Windward/Leeward High637.50.9412
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance628.70.9544
Triple Number Coastal/Long Distance Low705.60.8504
Triple Number Coastal/Long Distance Medium575.01.0435
Triple Number Coastal/Long Distance High522.01.1494
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium714.70.8395
Triple Number Windward/Leeward High637.50.9412
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1469.11002.9779.2668.8602.3564.4531.0474.4453.0
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7094
Downwind "popa"0.9407
70% up, 30% down "Ilhabela"0.7659
30% up, 70% down "Ilhabela-inverso"0.8569
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low705.60.8504
Triple Number Coastal/Long Distance Medium575.01.0435
Triple Number Coastal/Long Distance High522.01.1494
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium714.70.8395
Triple Number Windward/Leeward High637.50.9412
Predominantly Upwind633.60.9469
Predominantly Downwind566.91.0583
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low705.60.8504
Triple Number AP Medium575.01.0434
Triple Number AP High522.01.1494
Triple Number Windward/Leeward Low954.60.6285
Triple Number Windward/Leeward Medium714.70.8395
Triple Number Windward/Leeward High637.50.9412
Single Number Predominant Upwind653.20.9186
Single Number Predominant Reaching558.31.0746
Single Number Predominant Downwind589.71.0174
Predominant Upwind - Low830.50.7224
Predominant Upwind - Low/Med673.90.8904
Predominant Upwind - Medium620.60.9668
Predominant Upwind - Med/High591.81.0139
Predominant Upwind - High579.01.0362
Predominant Downwind Low850.30.7056
Predominant Downwind Low/Med639.20.9387
Predominant Downwind Medium550.41.0902
Predominant Downwind Med/High489.11.2267
Predominant Downwind High444.81.3489
Predominant Reaching Low742.00.8086
Predominant Reaching Low/Med588.21.0201
Predominant Reaching Medium529.41.1333
Predominant Reaching Med/High489.01.2270
Predominant Reaching High461.11.3011
SA/DSPL Upwind26.86SA/DSPL Downwind46.73
Scoring OptionTODTOT
5-Band Windward/Leeward Low1054.70.5689
5-Band Windward/Leeward Low/Med805.20.7452
5-Band Windward/Leeward Medium704.50.8517
5-Band Windward/Leeward Med/High646.30.9284
5-Band Windward/Leeward High614.10.9771
Windward/Leeward 60-40 Low1053.70.5694
Windward/Leeward 60-40 Low/Med817.90.7336
Windward/Leeward 60-40 Medium726.90.8254
Windward/Leeward 60-40 Med/High677.00.8862
Windward/Leeward 60-40 High652.90.9190
5-Band AP Low768.30.7810
5-Band AP Low/Med632.70.9483
5-Band AP Medium568.61.0553
5-Band AP Med/High528.91.1345
5-Band AP High503.61.1915
5-Band SF Bay Tour - Low913.00.6572
5-Band SF Bay Tour - Low/Med770.40.7788
5-Band SF Bay Tour - Medium682.40.8792
5-Band SF Bay Tour - Med/High631.60.9499
5-Band SF Bay Tour - High603.20.9947
Chicago-Mac Upwind0.8960
Chicago-Mac All Purpose0.9402
Chicago-Mac Downwind0.9799
Bayview-Mac Cove Island0.7076
Bayview-Mac Shore0.7140
Harvest Moon Regatta487.51.2307
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance628.70.9544
Triple Number Coastal/Long Distance Low705.60.8504
Triple Number Coastal/Long Distance Medium575.01.0435
Triple Number Coastal/Long Distance High522.01.1494
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium714.70.8395
Triple Number Windward/Leeward High637.50.9412
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1469.11002.9779.2668.8602.3564.4531.0474.4453.0
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance628.70.9544
Triple Number Coastal/Long Distance Low705.60.8504
Triple Number Coastal/Long Distance Medium575.01.0435
Triple Number Coastal/Long Distance High522.01.1494
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium714.70.8395
Triple Number Windward/Leeward High637.50.9412
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1469.11002.9779.2668.8602.3564.4531.0474.4453.0
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance628.7
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1469.11002.9779.2668.8602.3564.4531.0474.4453.0
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low705.60.8504
Triple Number Coastal/Long Distance Medium575.01.0435
Triple Number Coastal/Long Distance High522.01.1494
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium714.70.8395
Triple Number Windward/Leeward High637.50.9412
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating628.70.9544
FinRating, kevyt tuuli1030.70.9702
FinRating, kova tuuli504.80.9906
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low705.60.8504
Triple Number Coastal/Long Distance Medium575.01.0435
Triple Number Coastal/Long Distance High522.01.1494
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium714.70.8395
Triple Number Windward/Leeward High637.50.9412
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9544
Triple Number Coastal/Long Distance Low0.8504
Triple Number Coastal/Long Distance Medium1.0435
Triple Number Coastal/Long Distance High1.1494
Triple Number Windward/Leeward Low0.6546
Triple Number Windward/Leeward Medium0.8395
Triple Number Windward/Leeward High0.9412
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1469.11002.9779.2668.8602.3564.4531.0474.4453.0
For information
General Purpose Handicap (GPH)639.4
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance628.70.9544
Triple Number Coastal/Long Distance Low705.60.8504
Triple Number Coastal/Long Distance Medium575.01.0435
Triple Number Coastal/Long Distance High522.01.1494
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium714.70.8395
Triple Number Windward/Leeward High637.50.9412
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1469.11002.9779.2668.8602.3564.4531.0474.4453.0
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low705.60.8504
Triple Number Coastal/Long Distance Medium575.01.0435
Triple Number Coastal/Long Distance High522.01.1494
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium714.70.8395
Triple Number Windward/Leeward High637.50.9412
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance628.70.9544
Triple Number Coastal/Long Distance Low705.60.8504
Triple Number Coastal/Long Distance Medium575.01.0435
Triple Number Coastal/Long Distance High522.01.1494
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium714.70.8395
Triple Number Windward/Leeward High637.50.9412
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1469.11002.9779.2668.8602.3564.4531.0474.4453.0
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance628.70.9544
Triple Number Coastal/Long Distance Low705.60.8504
Triple Number Coastal/Long Distance Medium575.01.0435
Triple Number Coastal/Long Distance High522.01.1494
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium714.70.8395
Triple Number Windward/Leeward High637.50.9412
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1469.11002.9779.2668.8602.3564.4531.0474.4453.0
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low705.6
Triple Number Coastal/Long Distance Medium575.0
Triple Number Coastal/Long Distance High522.0
Triple Number Windward/Leeward Low916.6
Triple Number Windward/Leeward Medium714.7
Triple Number Windward/Leeward High637.5
Predominantly Upwind633.6
Predominantly Downwind566.9
Predominantly Reaching546.2
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance628.70.9544
Triple Number Coastal/Long Distance Low705.60.8504
Triple Number Coastal/Long Distance Medium575.01.0435
Triple Number Coastal/Long Distance High522.01.1494
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium714.70.8395
Triple Number Windward/Leeward High637.50.9412
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1469.11002.9779.2668.8602.3564.4531.0474.4453.0
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8504
Triple Number Coastal/Long Distance Medium1.0435
Triple Number Coastal/Long Distance High1.1494
Triple Number Windward/Leeward Low0.6546
Triple Number Windward/Leeward Medium0.8395
Triple Number Windward/Leeward High0.9412
Coastal/Long Distance0.9544
Predominantly Upwind0.9469
Predominantly Downwind1.0583
For information
General Purpose Handicap (GPH)639.4
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0401
Distanseseilas Trippeltall svak vind0.8504
Distanseseilas Trippeltall mellomvind1.0435
Distanseseilas Trippeltall sterk vind1.1494
Pølsebane Trippeltall svak vind0.6546
Pølsebane Trippeltall mellomvind0.8395
Pølsebane Trippeltall sterk vind0.9412
Motvind Singeltall0.9469
Medvind Singeltall1.0583
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low705.60.8504
Triple Number Coastal/Long Distance Medium575.01.0435
Triple Number Coastal/Long Distance High522.01.1494
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium714.70.8395
Triple Number Windward/Leeward High637.50.9412
Coastal/Long Distance628.70.9544
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind633.60.9469
Predominantly Downwind566.91.0583
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore595.81.0071
Cape Doctor Coastal490.41.2235
Triple Number Coastal/Long Distance Low705.60.8504
Triple Number Coastal/Long Distance Medium575.01.0435
Triple Number Coastal/Long Distance High522.01.1494
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium714.70.8395
Triple Number Windward/Leeward High637.50.9412
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8504
Triple Number Coastal/Long Distance Medium1.0435
Triple Number Coastal/Long Distance High1.1494
Triple Number Windward/Leeward Low0.6546
Triple Number Windward/Leeward Medium0.8395
Triple Number Windward/Leeward High0.9412
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8504
Triple Number Coastal/Long Distance Medium1.0435
Triple Number Coastal/Long Distance High1.1494
Triple Number Windward/Leeward Low0.6546
Triple Number Windward/Leeward Medium0.8395
Triple Number Windward/Leeward High0.9412
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance628.70.9544
Triple Number Coastal/Long Distance Low705.60.8504
Triple Number Coastal/Long Distance Medium575.01.0435
Triple Number Coastal/Long Distance High522.01.1494
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium714.70.8395
Triple Number Windward/Leeward High637.50.9412
Predominantly Upwind633.60.9469
Predominantly Downwind566.91.0583
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1469.11002.9779.2668.8602.3564.4531.0474.4453.0
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance628.70.9544
Triple Number Coastal/Long Distance Low705.60.8504
Triple Number Coastal/Long Distance Medium575.01.0435
Triple Number Coastal/Long Distance High522.01.1494
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium714.70.8395
Triple Number Windward/Leeward High637.50.9412
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1469.11002.9779.2668.8602.3564.4531.0474.4453.0
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low705.60.8504
Triple Number AP Medium575.01.0434
Triple Number AP High522.01.1494
Triple Number Windward/Leeward Low954.60.6285
Triple Number Windward/Leeward Medium714.70.8395
Triple Number Windward/Leeward High637.50.9412
Single Number Predominant Upwind653.20.9186
Single Number Predominant Reaching558.31.0746
Single Number Predominant Downwind589.71.0174
Predominant Upwind - Low830.50.7224
Predominant Upwind - Low/Med673.90.8904
Predominant Upwind - Medium620.60.9668
Predominant Upwind - Med/High591.81.0139
Predominant Upwind - High579.01.0362
Predominant Downwind Low850.30.7056
Predominant Downwind Low/Med639.20.9387
Predominant Downwind Medium550.41.0902
Predominant Downwind Med/High489.11.2267
Predominant Downwind High444.81.3489
Predominant Reaching Low742.00.8086
Predominant Reaching Low/Med588.21.0201
Predominant Reaching Medium529.41.1333
Predominant Reaching Med/High489.01.2270
Predominant Reaching High461.11.3011
SA/DSPL Upwind26.86SA/DSPL Downwind46.73
Scoring OptionTODTOT
5-Band Windward/Leeward Low1054.70.5689
5-Band Windward/Leeward Low/Med805.20.7452
5-Band Windward/Leeward Medium704.50.8517
5-Band Windward/Leeward Med/High646.30.9284
5-Band Windward/Leeward High614.10.9771
Windward/Leeward 60-40 Low1053.70.5694
Windward/Leeward 60-40 Low/Med817.90.7336
Windward/Leeward 60-40 Medium726.90.8254
Windward/Leeward 60-40 Med/High677.00.8862
Windward/Leeward 60-40 High652.90.9190
5-Band AP Low768.30.7810
5-Band AP Low/Med632.70.9483
5-Band AP Medium568.61.0553
5-Band AP Med/High528.91.1345
5-Band AP High503.61.1915
5-Band SF Bay Tour - Low913.00.6572
5-Band SF Bay Tour - Low/Med770.40.7788
5-Band SF Bay Tour - Medium682.40.8792
5-Band SF Bay Tour - Med/High631.60.9499
5-Band SF Bay Tour - High603.20.9947
Chicago-Mac Upwind0.8960
Chicago-Mac All Purpose0.9402
Chicago-Mac Downwind0.9799
Bayview-Mac Cove Island0.7076
Bayview-Mac Shore0.7140
Harvest Moon Regatta487.51.2307
ORC Ref  04140003W7HIssued on 29/07/2025Valid until 31/12/2025
VPP ver: 2025 1.01 | © ORC | www.orc.org
Double HandedClub Certificate2025
BellonaSWE 59
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassSK30MeasurementHINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA12.000Max. Beam1.760Draft1.223Displacement2,250Wetted area14.24IMS L8.685LSM08.248Acc. length5.720Sink (kg/mm) 10.05
VCGD-0.356VCGM-0.378RM Rated (kg·m) 32.4Limit of positive stability(°) N/AStability IndexN/ADefault crew weight170Declared crew weight160
PROPELLER
Propeller TypeNo Propeller
Hydro generatorNo
RIG
Forestay tensionAftInner stayNone FittedMast materialSingle headsail furlerNoMainsail furlerArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstaysCheckstaysSpreaders1Rotating mastNo
P11.300IG9.700ISP9.720MDT10.080MDL10.120MDT2MDL2TLMWGO
E3.780J2.350BAS1.000FSDSFJ1.500SPL2.350WPLTPSBDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date29/07/2025
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  04140003W7HIssued on 29/07/2025Valid until 31/12/2025
VPP ver: 2025 1.01 | © ORC | www.orc.org
Double HandedClub Certificate2025
BellonaSWE 59
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.901.572.5126.24
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment11.102.264.708.56NoNo 20.0020.701.232.288.56YesNo 10.20
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment19.729.729.727.3154.22
ORC Ref  04140003W7HIssued on 29/07/2025Valid until 31/12/2025
VPP ver: 2025 1.01 | © ORC | www.orc.org