Club 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 Angles43.9°43.9°42.3°41.5°41.2°41.3°41.3°42.3°45.1°
Beat VMG2.733.624.184.424.544.584.634.634.43
52°4.265.556.286.576.716.786.846.906.82
60°4.555.876.576.856.997.067.147.227.21
75°4.776.116.827.147.337.467.577.757.83
90°4.676.056.847.277.567.808.008.338.58
110°4.345.826.827.337.617.888.148.809.48
120°4.165.666.757.357.818.198.529.179.87
135°3.514.996.247.077.638.208.8210.4712.00
150°2.864.135.296.317.117.668.239.6912.54
Run VMG2.473.584.585.476.246.857.358.4410.86
Gybe Angles137.4°137.4°146.7°149.6°156.6°165.4°166.7°156.4°148.9°
APH ToD:569.8CDL: 7.956APH ToT: 1.0529CertNo:
BOAT
ClassSK30DesignerK-E SjögrenBuilderErikssons båtvarvAge date01/1925Series date01/1925Offset fileSWE59.offData fileSWE59
HULL
Length Overall12.000 mMaximum Beam1.760 mDraft1.223 mDisplacement2,250 kgDLR4.0809IMS DivisionPerformanceDynamic Allowance0.030%Age Allowance0.487%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight240 kg(declared)Minimum weight130 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  04140003W7FIssued on 29/07/2025Valid until 31/12/2025
VPP ver: 2025 1.01 | © ORC | www.orc.org
Club 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 VMG1319.7995.8862.1813.9792.8785.4777.7777.7812.9
52°844.7649.0573.3548.1536.5531.2526.0521.5528.1
60°790.8613.6547.9525.8515.2509.6504.3498.5499.6
75°755.0589.0528.1503.9491.1482.6475.4464.6459.6
90°770.2594.6526.0495.3476.2461.5449.8432.1419.5
110°830.2618.9528.0491.3472.8457.0442.4409.1379.8
120°866.1635.6533.4490.1460.9439.4422.6392.5364.7
135°1026.5720.8576.5509.4471.7439.1408.4343.8299.9
150°1259.9871.5680.0570.4506.3470.1437.5371.5287.1
Run VMG1456.31006.4785.2658.6576.5525.3489.5426.7331.5
Selected Courses
Windward / Leeward1384.11001.1823.7736.3684.7655.3633.6602.2572.2
All purpose1032.7761.9641.4586.3555.2535.9519.7492.7472.9
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward709.60.8455
All purpose569.81.0529
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low701.70.8551
Triple Number Coastal/Long Distance Medium567.91.0565
Triple Number Coastal/Long Distance High513.61.1682
Triple Number Windward/Leeward Low912.40.6576
Triple Number Windward/Leeward Medium706.10.8497
Triple Number Windward/Leeward High627.30.9565
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance621.20.9659
Triple Number Coastal/Long Distance Low701.70.8551
Triple Number Coastal/Long Distance Medium567.91.0565
Triple Number Coastal/Long Distance High513.61.1682
Triple Number Windward/Leeward Low912.40.6576
Triple Number Windward/Leeward Medium706.10.8497
Triple Number Windward/Leeward High627.30.9565
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1477.91001.6773.3661.8594.3556.3523.0466.8443.1
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7235
Downwind "popa"0.9400
70% up, 30% down "Ilhabela"0.7772
30% up, 70% down "Ilhabela-inverso"0.8625
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low701.70.8551
Triple Number Coastal/Long Distance Medium567.91.0565
Triple Number Coastal/Long Distance High513.61.1682
Triple Number Windward/Leeward Low912.40.6576
Triple Number Windward/Leeward Medium706.10.8497
Triple Number Windward/Leeward High627.30.9565
Predominantly Upwind624.20.9613
Predominantly Downwind563.21.0654
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low701.70.8551
Triple Number AP Medium568.01.0564
Triple Number AP High513.61.1682
Triple Number Windward/Leeward Low951.20.6308
Triple Number Windward/Leeward Medium706.10.8497
Triple Number Windward/Leeward High627.30.9565
Single Number Predominant Upwind644.00.9316
Single Number Predominant Reaching552.91.0853
Single Number Predominant Downwind586.11.0237
Predominant Upwind - Low826.70.7257
Predominant Upwind - Low/Med665.80.9011
Predominant Upwind - Medium610.90.9822
Predominant Upwind - Med/High580.81.0330
Predominant Upwind - High565.61.0608
Predominant Downwind Low850.50.7055
Predominant Downwind Low/Med636.20.9430
Predominant Downwind Medium546.31.0982
Predominant Downwind Med/High484.31.2389
Predominant Downwind High438.11.3696
Predominant Reaching Low740.00.8108
Predominant Reaching Low/Med583.61.0281
Predominant Reaching Medium523.71.1457
Predominant Reaching Med/High482.31.2440
Predominant Reaching High452.41.3262
SA/DSPL Upwind26.86SA/DSPL Downwind46.73
Scoring OptionTODTOT
5-Band Windward/Leeward Low1053.50.5696
5-Band Windward/Leeward Low/Med798.50.7515
5-Band Windward/Leeward Medium695.70.8624
5-Band Windward/Leeward Med/High636.30.9430
5-Band Windward/Leeward High602.50.9959
Windward/Leeward 60-40 Low1051.40.5707
Windward/Leeward 60-40 Low/Med809.70.7410
Windward/Leeward 60-40 Medium716.50.8374
Windward/Leeward 60-40 Med/High665.10.9021
Windward/Leeward 60-40 High638.70.9394
5-Band AP Low766.30.7830
5-Band AP Low/Med627.00.9569
5-Band AP Medium561.41.0688
5-Band AP Med/High520.91.1519
5-Band AP High493.91.2147
5-Band SF Bay Tour - Low909.50.6597
5-Band SF Bay Tour - Low/Med763.20.7862
5-Band SF Bay Tour - Medium673.20.8912
5-Band SF Bay Tour - Med/High621.10.9660
5-Band SF Bay Tour - High590.51.0162
Chicago-Mac Upwind0.9081
Chicago-Mac All Purpose0.9493
Chicago-Mac Downwind0.9853
Bayview-Mac Cove Island0.7103
Bayview-Mac Shore0.7169
Harvest Moon Regatta482.31.2440
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance621.20.9659
Triple Number Coastal/Long Distance Low701.70.8551
Triple Number Coastal/Long Distance Medium567.91.0565
Triple Number Coastal/Long Distance High513.61.1682
Triple Number Windward/Leeward Low912.40.6576
Triple Number Windward/Leeward Medium706.10.8497
Triple Number Windward/Leeward High627.30.9565
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1477.91001.6773.3661.8594.3556.3523.0466.8443.1
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance621.20.9659
Triple Number Coastal/Long Distance Low701.70.8551
Triple Number Coastal/Long Distance Medium567.91.0565
Triple Number Coastal/Long Distance High513.61.1682
Triple Number Windward/Leeward Low912.40.6576
Triple Number Windward/Leeward Medium706.10.8497
Triple Number Windward/Leeward High627.30.9565
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1477.91001.6773.3661.8594.3556.3523.0466.8443.1
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance621.2
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1477.91001.6773.3661.8594.3556.3523.0466.8443.1
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low701.70.8551
Triple Number Coastal/Long Distance Medium567.91.0565
Triple Number Coastal/Long Distance High513.61.1682
Triple Number Windward/Leeward Low912.40.6576
Triple Number Windward/Leeward Medium706.10.8497
Triple Number Windward/Leeward High627.30.9565
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating621.20.9659
FinRating, kevyt tuuli1030.10.9708
FinRating, kova tuuli495.11.0100
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low701.70.8551
Triple Number Coastal/Long Distance Medium567.91.0565
Triple Number Coastal/Long Distance High513.61.1682
Triple Number Windward/Leeward Low912.40.6576
Triple Number Windward/Leeward Medium706.10.8497
Triple Number Windward/Leeward High627.30.9565
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9659
Triple Number Coastal/Long Distance Low0.8551
Triple Number Coastal/Long Distance Medium1.0565
Triple Number Coastal/Long Distance High1.1682
Triple Number Windward/Leeward Low0.6576
Triple Number Windward/Leeward Medium0.8497
Triple Number Windward/Leeward High0.9565
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1477.91001.6773.3661.8594.3556.3523.0466.8443.1
For information
General Purpose Handicap (GPH)632.8
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance621.20.9659
Triple Number Coastal/Long Distance Low701.70.8551
Triple Number Coastal/Long Distance Medium567.91.0565
Triple Number Coastal/Long Distance High513.61.1682
Triple Number Windward/Leeward Low912.40.6576
Triple Number Windward/Leeward Medium706.10.8497
Triple Number Windward/Leeward High627.30.9565
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1477.91001.6773.3661.8594.3556.3523.0466.8443.1
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low701.70.8551
Triple Number Coastal/Long Distance Medium567.91.0565
Triple Number Coastal/Long Distance High513.61.1682
Triple Number Windward/Leeward Low912.40.6576
Triple Number Windward/Leeward Medium706.10.8497
Triple Number Windward/Leeward High627.30.9565
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance621.20.9659
Triple Number Coastal/Long Distance Low701.70.8551
Triple Number Coastal/Long Distance Medium567.91.0565
Triple Number Coastal/Long Distance High513.61.1682
Triple Number Windward/Leeward Low912.40.6576
Triple Number Windward/Leeward Medium706.10.8497
Triple Number Windward/Leeward High627.30.9565
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1477.91001.6773.3661.8594.3556.3523.0466.8443.1
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance621.20.9659
Triple Number Coastal/Long Distance Low701.70.8551
Triple Number Coastal/Long Distance Medium567.91.0565
Triple Number Coastal/Long Distance High513.61.1682
Triple Number Windward/Leeward Low912.40.6576
Triple Number Windward/Leeward Medium706.10.8497
Triple Number Windward/Leeward High627.30.9565
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1477.91001.6773.3661.8594.3556.3523.0466.8443.1
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low701.7
Triple Number Coastal/Long Distance Medium567.9
Triple Number Coastal/Long Distance High513.6
Triple Number Windward/Leeward Low912.4
Triple Number Windward/Leeward Medium706.1
Triple Number Windward/Leeward High627.3
Predominantly Upwind624.2
Predominantly Downwind563.2
Predominantly Reaching541.4
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance621.20.9659
Triple Number Coastal/Long Distance Low701.70.8551
Triple Number Coastal/Long Distance Medium567.91.0565
Triple Number Coastal/Long Distance High513.61.1682
Triple Number Windward/Leeward Low912.40.6576
Triple Number Windward/Leeward Medium706.10.8497
Triple Number Windward/Leeward High627.30.9565
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1477.91001.6773.3661.8594.3556.3523.0466.8443.1
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8551
Triple Number Coastal/Long Distance Medium1.0565
Triple Number Coastal/Long Distance High1.1682
Triple Number Windward/Leeward Low0.6576
Triple Number Windward/Leeward Medium0.8497
Triple Number Windward/Leeward High0.9565
Coastal/Long Distance0.9659
Predominantly Upwind0.9613
Predominantly Downwind1.0654
For information
General Purpose Handicap (GPH)632.8
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0529
Distanseseilas Trippeltall svak vind0.8551
Distanseseilas Trippeltall mellomvind1.0565
Distanseseilas Trippeltall sterk vind1.1682
Pølsebane Trippeltall svak vind0.6576
Pølsebane Trippeltall mellomvind0.8497
Pølsebane Trippeltall sterk vind0.9565
Motvind Singeltall0.9613
Medvind Singeltall1.0654
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low701.70.8551
Triple Number Coastal/Long Distance Medium567.91.0565
Triple Number Coastal/Long Distance High513.61.1682
Triple Number Windward/Leeward Low912.40.6576
Triple Number Windward/Leeward Medium706.10.8497
Triple Number Windward/Leeward High627.30.9565
Coastal/Long Distance621.20.9659
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind624.20.9613
Predominantly Downwind563.21.0654
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore581.21.0324
Cape Doctor Coastal478.81.2531
Triple Number Coastal/Long Distance Low701.70.8551
Triple Number Coastal/Long Distance Medium567.91.0565
Triple Number Coastal/Long Distance High513.61.1682
Triple Number Windward/Leeward Low912.40.6576
Triple Number Windward/Leeward Medium706.10.8497
Triple Number Windward/Leeward High627.30.9565
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8551
Triple Number Coastal/Long Distance Medium1.0565
Triple Number Coastal/Long Distance High1.1682
Triple Number Windward/Leeward Low0.6576
Triple Number Windward/Leeward Medium0.8497
Triple Number Windward/Leeward High0.9565
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8551
Triple Number Coastal/Long Distance Medium1.0565
Triple Number Coastal/Long Distance High1.1682
Triple Number Windward/Leeward Low0.6576
Triple Number Windward/Leeward Medium0.8497
Triple Number Windward/Leeward High0.9565
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance621.20.9659
Triple Number Coastal/Long Distance Low701.70.8551
Triple Number Coastal/Long Distance Medium567.91.0565
Triple Number Coastal/Long Distance High513.61.1682
Triple Number Windward/Leeward Low912.40.6576
Triple Number Windward/Leeward Medium706.10.8497
Triple Number Windward/Leeward High627.30.9565
Predominantly Upwind624.20.9613
Predominantly Downwind563.21.0654
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1477.91001.6773.3661.8594.3556.3523.0466.8443.1
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance621.20.9659
Triple Number Coastal/Long Distance Low701.70.8551
Triple Number Coastal/Long Distance Medium567.91.0565
Triple Number Coastal/Long Distance High513.61.1682
Triple Number Windward/Leeward Low912.40.6576
Triple Number Windward/Leeward Medium706.10.8497
Triple Number Windward/Leeward High627.30.9565
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1477.91001.6773.3661.8594.3556.3523.0466.8443.1
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low701.70.8551
Triple Number AP Medium568.01.0564
Triple Number AP High513.61.1682
Triple Number Windward/Leeward Low951.20.6308
Triple Number Windward/Leeward Medium706.10.8497
Triple Number Windward/Leeward High627.30.9565
Single Number Predominant Upwind644.00.9316
Single Number Predominant Reaching552.91.0853
Single Number Predominant Downwind586.11.0237
Predominant Upwind - Low826.70.7257
Predominant Upwind - Low/Med665.80.9011
Predominant Upwind - Medium610.90.9822
Predominant Upwind - Med/High580.81.0330
Predominant Upwind - High565.61.0608
Predominant Downwind Low850.50.7055
Predominant Downwind Low/Med636.20.9430
Predominant Downwind Medium546.31.0982
Predominant Downwind Med/High484.31.2389
Predominant Downwind High438.11.3696
Predominant Reaching Low740.00.8108
Predominant Reaching Low/Med583.61.0281
Predominant Reaching Medium523.71.1457
Predominant Reaching Med/High482.31.2440
Predominant Reaching High452.41.3262
SA/DSPL Upwind26.86SA/DSPL Downwind46.73
Scoring OptionTODTOT
5-Band Windward/Leeward Low1053.50.5696
5-Band Windward/Leeward Low/Med798.50.7515
5-Band Windward/Leeward Medium695.70.8624
5-Band Windward/Leeward Med/High636.30.9430
5-Band Windward/Leeward High602.50.9959
Windward/Leeward 60-40 Low1051.40.5707
Windward/Leeward 60-40 Low/Med809.70.7410
Windward/Leeward 60-40 Medium716.50.8374
Windward/Leeward 60-40 Med/High665.10.9021
Windward/Leeward 60-40 High638.70.9394
5-Band AP Low766.30.7830
5-Band AP Low/Med627.00.9569
5-Band AP Medium561.41.0688
5-Band AP Med/High520.91.1519
5-Band AP High493.91.2147
5-Band SF Bay Tour - Low909.50.6597
5-Band SF Bay Tour - Low/Med763.20.7862
5-Band SF Bay Tour - Medium673.20.8912
5-Band SF Bay Tour - Med/High621.10.9660
5-Band SF Bay Tour - High590.51.0162
Chicago-Mac Upwind0.9081
Chicago-Mac All Purpose0.9493
Chicago-Mac Downwind0.9853
Bayview-Mac Cove Island0.7103
Bayview-Mac Shore0.7169
Harvest Moon Regatta482.31.2440
ORC Ref  04140003W7FIssued on 29/07/2025Valid until 31/12/2025
VPP ver: 2025 1.01 | © ORC | www.orc.org
Club 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 area14.28IMS L8.817LSM08.199Acc. length5.720Sink (kg/mm) 10.13
VCGD-0.358VCGM-0.381RM Rated (kg·m) 32.6Limit of positive stability(°) N/AStability IndexN/ADefault crew weight519Declared crew weight240
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  04140003W7FIssued on 29/07/2025Valid until 31/12/2025
VPP ver: 2025 1.01 | © ORC | www.orc.org
Club 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  04140003W7FIssued on 29/07/2025Valid until 31/12/2025
VPP ver: 2025 1.01 | © ORC | www.orc.org