International
One Design
Certificate
2024

Boat

SB 20

MNA-1234

Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat Angles42.4°40.1°37.9°37.8°37.9°38.2°39.1°40.7°
Beat VMG3.133.734.084.194.224.244.234.15
52°4.705.395.735.885.976.036.116.10
60°4.915.555.896.116.236.326.446.48
75°5.035.666.066.426.666.827.077.20
90°5.235.846.136.556.987.337.828.19
110°5.326.056.627.027.397.758.479.74
120°5.205.986.677.317.878.379.5010.93
135°4.765.656.317.037.938.9811.5313.10
150°4.075.075.726.256.867.6910.9213.84
Run VMG3.534.394.955.415.946.669.4611.99
Gybe Angles145.3°149.2°149.9°147.6°144.8°142.8°144.2°147.4°
APH ToD:630.6CDL: 5.972APH ToT: 0.9514CertNo:SB20
BOAT
ClassSB20 ONE DESIGNDesignerTONY CASTROBuilderLASERAge date01/2006Series date08/2003Offset filelasb3.OD.offData filelasb3
HULL
Length Overall6.141 mMaximum Beam2.148 mDraft1.509 mDisplacement696 kgDLR3.9080IMS DivisionSportboatDynamic Allowance0.000%Age Allowance0.487%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight270 kg(declared)Minimum weight140 kg * when appliedNon Manual PowerNoCrew Arm ExtensionLoose or no lifelines
SAIL AREAS (m²)
MeasuredRatedMainsail16.9417.60Headsail Luffed9.169.16Headsail FlyingSymmetricAsymmetric44.5044.50 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail4.68Storm Jib2.87Heavy Weather Jib7.74
SAIL LIMITS
Headsails5  Spinnakers4
STABILITY
Righting Moment15.3 kg·mStability Index101.4
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.

International
One Design
Certificate
2024

Boat

SB 20

MNA-1234

Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat VMG1151.5966.2883.2860.0852.4849.2851.1868.2
52°766.2667.8628.7611.8603.1597.2589.5589.9
60°733.1649.1611.6589.1577.7569.4559.3555.3
75°715.3636.2594.0560.8540.6527.5509.3500.2
90°687.7616.2587.0549.8516.0491.4460.4439.6
110°676.5595.1543.8512.8487.3464.5425.3369.7
120°692.3601.8540.1492.5457.7430.3379.1329.4
135°757.1637.0570.3512.2454.1400.9312.1274.8
150°883.8709.6629.6575.8524.9468.3329.7260.1
Run VMG1020.5819.4727.0664.9606.1540.8380.7300.3
Selected Courses
Windward / Leeward1086.0892.8805.1762.5729.2695.0615.9584.3
All purpose845.8717.1655.5618.6589.7563.6512.6486.7
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward779.50.7698
All purpose630.60.9514
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low781.50.7678
Triple Number Coastal/Long Distance Medium631.90.9495
Triple Number Coastal/Long Distance High551.01.0889
Triple Number Windward/Leeward Low989.40.6064
Triple Number Windward/Leeward Medium779.20.7700
Triple Number Windward/Leeward High673.90.8904
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance683.40.8780
Triple Number Coastal/Long Distance Low781.50.7678
Triple Number Coastal/Long Distance Medium631.90.9495
Triple Number Coastal/Long Distance High551.01.0889
Triple Number Windward/Leeward Low989.40.6064
Triple Number Windward/Leeward Medium779.20.7700
Triple Number Windward/Leeward High673.90.8904
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1079.4843.1731.2661.3613.3567.8482.8452.0
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6549
Downwind "popa"0.8825
70% up, 30% down "Ilhabela"0.7098
30% up, 70% down "Ilhabela-inverso"0.7992
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low781.50.7678
Triple Number Coastal/Long Distance Medium631.90.9495
Triple Number Coastal/Long Distance High551.01.0889
Triple Number Windward/Leeward Low989.40.6064
Triple Number Windward/Leeward Medium779.20.7700
Triple Number Windward/Leeward High673.90.8904
Predominantly Upwind697.10.8607
Predominantly Downwind621.30.9657
Custom scoring options for Canada
Scoring OptionTODTOT
Predominant Upwind695.10.8632
Predominant Reaching601.80.9971
Predominant Downwind601.80.9971
Predominant Upwind - Low866.90.6921
Predominant Upwind - Low/Med749.90.8001
Predominant Upwind - Medium680.70.8815
Predominant Upwind - Med/High637.30.9415
Predominant Upwind - High610.30.9831
Predominant Reaching Low760.10.7893
Predominant Reaching Low/Med660.30.9087
Predominant Reaching Medium587.21.0219
Predominant Reaching Med/High520.01.1539
Predominant Reaching High471.71.2719
Predominant Downwind Low760.10.7893
Predominant Downwind Low/Med701.80.8549
Predominant Downwind Medium608.30.9863
Predominant Downwind Med/High516.91.1608
Predominant Downwind High438.01.3699
Harvest Moon Regatta526.71.1392
Chicago-Mac Upwind0.8475
Chicago-Mac All Purpose0.8944
Chicago-Mac Downwind0.9488
Bayview-Mac Cove Island0.8396
Bayview-Mac Shore0.8406
Scoring OptionTODTOT
5-Band Windward/Leeward Low1042.10.5757
5-Band Windward/Leeward Low/Med871.10.6888
5-Band Windward/Leeward Medium769.10.7801
5-Band Windward/Leeward Med/High693.10.8657
5-Band Windward/Leeward High624.10.9614
Triple Number Windward/Leeward Low989.40.6064
Triple Number Windward/Leeward Medium779.20.7700
Triple Number Windward/Leeward High673.90.8904
Windward/Leeward 60-40 Low1055.60.5684
Windward/Leeward 60-40 Low/Med886.60.6768
Windward/Leeward 60-40 Medium789.40.7601
Windward/Leeward 60-40 Med/High724.70.8280
Windward/Leeward 60-40 High670.00.8955
5-Band AP Low816.60.7348
5-Band AP Low/Med699.80.8574
5-Band AP Medium623.50.9623
5-Band AP Med/High564.01.0637
5-Band AP High517.01.1606
Triple Number AP Low781.40.7678
Triple Number AP Medium631.90.9495
Triple Number AP High551.01.0889
5-Band SF Bay Tour - Low994.80.6032
5-Band SF Bay Tour - Low/Med835.90.7178
5-Band SF Bay Tour - Medium740.50.8103
5-Band SF Bay Tour - Med/High671.80.8931
5-Band SF Bay Tour - High613.80.9775
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance683.40.8780
Triple Number Coastal/Long Distance Low781.50.7678
Triple Number Coastal/Long Distance Medium631.90.9495
Triple Number Coastal/Long Distance High551.01.0889
Triple Number Windward/Leeward Low989.40.6064
Triple Number Windward/Leeward Medium779.20.7700
Triple Number Windward/Leeward High673.90.8904
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1079.4843.1731.2661.3613.3567.8482.8452.0
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance683.40.8780
Triple Number Coastal/Long Distance Low781.50.7678
Triple Number Coastal/Long Distance Medium631.90.9495
Triple Number Coastal/Long Distance High551.01.0889
Triple Number Windward/Leeward Low989.40.6064
Triple Number Windward/Leeward Medium779.20.7700
Triple Number Windward/Leeward High673.90.8904
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1079.4843.1731.2661.3613.3567.8482.8452.0
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance683.4
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1079.4843.1731.2661.3613.3567.8482.8452.0
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low781.50.7678
Triple Number Coastal/Long Distance Medium631.90.9495
Triple Number Coastal/Long Distance High551.01.0889
Triple Number Windward/Leeward Low989.40.6064
Triple Number Windward/Leeward Medium779.20.7700
Triple Number Windward/Leeward High673.90.8904
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating (Coastal/Long Distance)683.40.8780
Triple Number Coastal/Long Distance Low781.50.7678
Triple Number Coastal/Long Distance Medium631.90.9495
Triple Number Coastal/Long Distance High551.01.0889
Triple Number Windward/Leeward Low989.40.6064
Triple Number Windward/Leeward Medium779.20.7700
Triple Number Windward/Leeward High673.90.8904
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1079.4843.1731.2661.3613.3567.8482.8452.0
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low781.50.7678
Triple Number Coastal/Long Distance Medium631.90.9495
Triple Number Coastal/Long Distance High551.01.0889
Triple Number Windward/Leeward Low989.40.6064
Triple Number Windward/Leeward Medium779.20.7700
Triple Number Windward/Leeward High673.90.8904
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7678
Triple Number Coastal/Long Distance Medium0.9495
Triple Number Coastal/Long Distance High1.0889
Triple Number Windward/Leeward Low0.6064
Triple Number Windward/Leeward Medium0.7700
Triple Number Windward/Leeward High0.8904
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1079.4843.1731.2661.3613.3567.8482.8452.0
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance683.40.8780
Triple Number Coastal/Long Distance Low781.50.7678
Triple Number Coastal/Long Distance Medium631.90.9495
Triple Number Coastal/Long Distance High551.01.0889
Triple Number Windward/Leeward Low989.40.6064
Triple Number Windward/Leeward Medium779.20.7700
Triple Number Windward/Leeward High673.90.8904
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1079.4843.1731.2661.3613.3567.8482.8452.0
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low781.50.7678
Triple Number Coastal/Long Distance Medium631.90.9495
Triple Number Coastal/Long Distance High551.01.0889
Triple Number Windward/Leeward Low989.40.6064
Triple Number Windward/Leeward Medium779.20.7700
Triple Number Windward/Leeward High673.90.8904
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance683.40.8780
Triple Number Coastal/Long Distance Low781.50.7678
Triple Number Coastal/Long Distance Medium631.90.9495
Triple Number Coastal/Long Distance High551.01.0889
Triple Number Windward/Leeward Low989.40.6064
Triple Number Windward/Leeward Medium779.20.7700
Triple Number Windward/Leeward High673.90.8904
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1079.4843.1731.2661.3613.3567.8482.8452.0
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance683.40.8780
Triple Number Coastal/Long Distance Low781.50.7678
Triple Number Coastal/Long Distance Medium631.90.9495
Triple Number Coastal/Long Distance High551.01.0889
Triple Number Windward/Leeward Low989.40.6064
Triple Number Windward/Leeward Medium779.20.7700
Triple Number Windward/Leeward High673.90.8904
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1079.4843.1731.2661.3613.3567.8482.8452.0
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low781.5
Triple Number Coastal/Long Distance Medium631.9
Triple Number Coastal/Long Distance High551.0
Triple Number Windward/Leeward Low989.4
Triple Number Windward/Leeward Medium779.2
Triple Number Windward/Leeward High673.9
Predominantly Upwind697.1
Predominantly Downwind621.3
Predominantly Reaching601.8
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance683.40.8780
Triple Number Coastal/Long Distance Low781.50.7678
Triple Number Coastal/Long Distance Medium631.90.9495
Triple Number Coastal/Long Distance High551.01.0889
Triple Number Windward/Leeward Low989.40.6064
Triple Number Windward/Leeward Medium779.20.7700
Triple Number Windward/Leeward High673.90.8904
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1079.4843.1731.2661.3613.3567.8482.8452.0
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7678
Triple Number Coastal/Long Distance Medium0.9495
Triple Number Coastal/Long Distance High1.0889
Triple Number Windward/Leeward Low0.6064
Triple Number Windward/Leeward Medium0.7700
Triple Number Windward/Leeward High0.8904
Coastal/Long Distance0.8780
Predominantly Upwind0.8607
Predominantly Downwind0.9657
For information
General Purpose Handicap (GPH)701.5
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.7678
Tretall Distanseseilas Mellomvind0.9495
Tretall Distanseseilas Mye vind1.0889
Tretall Pølsebane Lite vind0.6064
Tretall Pølsebane Mellomvind0.7700
Tretall Pølsebane Mye vind0.8904
Distanseseilas ett tall (OSN 8-16kn)0.8780
Distanseseilas ett tall (APH 6-20kn)0.9514
Enkeltall Motvind0.8607
Enkeltall Medvind0.9657
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low781.50.7678
Triple Number Coastal/Long Distance Medium631.90.9495
Triple Number Coastal/Long Distance High551.01.0889
Triple Number Windward/Leeward Low989.40.6064
Triple Number Windward/Leeward Medium779.20.7700
Triple Number Windward/Leeward High673.90.8904
Coastal/Long Distance683.40.8780
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind697.10.8607
Predominantly Downwind621.30.9657
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore593.71.0105
Cape Doctor Coastal494.51.2135
Triple Number Coastal/Long Distance Low781.50.7678
Triple Number Coastal/Long Distance Medium631.90.9495
Triple Number Coastal/Long Distance High551.01.0889
Triple Number Windward/Leeward Low989.40.6064
Triple Number Windward/Leeward Medium779.20.7700
Triple Number Windward/Leeward High673.90.8904
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7678
Triple Number Coastal/Long Distance Medium0.9495
Triple Number Coastal/Long Distance High1.0889
Triple Number Windward/Leeward Low0.6064
Triple Number Windward/Leeward Medium0.7700
Triple Number Windward/Leeward High0.8904
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7678
Triple Number Coastal/Long Distance Medium0.9495
Triple Number Coastal/Long Distance High1.0889
Triple Number Windward/Leeward Low0.6064
Triple Number Windward/Leeward Medium0.7700
Triple Number Windward/Leeward High0.8904
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance683.40.8780
Triple Number Coastal/Long Distance Low781.50.7678
Triple Number Coastal/Long Distance Medium631.90.9495
Triple Number Coastal/Long Distance High551.01.0889
Triple Number Windward/Leeward Low989.40.6064
Triple Number Windward/Leeward Medium779.20.7700
Triple Number Windward/Leeward High673.90.8904
Predominantly Upwind697.10.8607
Predominantly Downwind621.30.9657
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1079.4843.1731.2661.3613.3567.8482.8452.0
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance683.40.8780
Triple Number Coastal/Long Distance Low781.50.7678
Triple Number Coastal/Long Distance Medium631.90.9495
Triple Number Coastal/Long Distance High551.01.0889
Triple Number Windward/Leeward Low989.40.6064
Triple Number Windward/Leeward Medium779.20.7700
Triple Number Windward/Leeward High673.90.8904
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1079.4843.1731.2661.3613.3567.8482.8452.0
Custom scoring options for United States of America
Scoring OptionTODTOT
Predominant Upwind695.10.8632
Predominant Reaching601.80.9971
Predominant Downwind601.80.9971
Predominant Upwind - Low866.90.6921
Predominant Upwind - Low/Med749.90.8001
Predominant Upwind - Medium680.70.8815
Predominant Upwind - Med/High637.30.9415
Predominant Upwind - High610.30.9831
Predominant Reaching Low760.10.7893
Predominant Reaching Low/Med660.30.9087
Predominant Reaching Medium587.21.0219
Predominant Reaching Med/High520.01.1539
Predominant Reaching High471.71.2719
Predominant Downwind Low760.10.7893
Predominant Downwind Low/Med701.80.8549
Predominant Downwind Medium608.30.9863
Predominant Downwind Med/High516.91.1608
Predominant Downwind High438.01.3699
Harvest Moon Regatta526.71.1392
Chicago-Mac Upwind0.8475
Chicago-Mac All Purpose0.8944
Chicago-Mac Downwind0.9488
Bayview-Mac Cove Island0.8396
Bayview-Mac Shore0.8406
Scoring OptionTODTOT
5-Band Windward/Leeward Low1042.10.5757
5-Band Windward/Leeward Low/Med871.10.6888
5-Band Windward/Leeward Medium769.10.7801
5-Band Windward/Leeward Med/High693.10.8657
5-Band Windward/Leeward High624.10.9614
Triple Number Windward/Leeward Low989.40.6064
Triple Number Windward/Leeward Medium779.20.7700
Triple Number Windward/Leeward High673.90.8904
Windward/Leeward 60-40 Low1055.60.5684
Windward/Leeward 60-40 Low/Med886.60.6768
Windward/Leeward 60-40 Medium789.40.7601
Windward/Leeward 60-40 Med/High724.70.8280
Windward/Leeward 60-40 High670.00.8955
5-Band AP Low816.60.7348
5-Band AP Low/Med699.80.8574
5-Band AP Medium623.50.9623
5-Band AP Med/High564.01.0637
5-Band AP High517.01.1606
Triple Number AP Low781.40.7678
Triple Number AP Medium631.90.9495
Triple Number AP High551.01.0889
5-Band SF Bay Tour - Low994.80.6032
5-Band SF Bay Tour - Low/Med835.90.7178
5-Band SF Bay Tour - Medium740.50.8103
5-Band SF Bay Tour - Med/High671.80.8931
5-Band SF Bay Tour - High613.80.9775

International
One Design
Certificate
2024

Boat

SB 20

MNA-1234

Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassSB20 ONE DESIGNMeasurement16/03/2012HINPlan reviewHull constructionSolidCarbon RudderNoLight stanchionsNoTrim tabNo
LOA6.141Max. Beam2.148Draft1.509Displacement696Wetted area8.29IMS L5.914LSM05.626Acc. length6.141Sink (kg/mm) 6.39
VCGD-0.208VCGM-0.187RM Rated (kg·m) 15.3Limit of positive stability(°) 110.5Stability Index101.4Default crew weight303Declared crew weight270
PROPELLER
Propeller TypeNo Propeller
Hydro generatorNo
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunners/Checkstays0Spreaders2Rotating mastNo
P8.040IG7.382ISP9.038MDT10.072MDL10.102MDT20.070MDL20.082TL1.400MW0.090GO0.145
E3.320J2.193BAS1.016FSD0.000SFJ0.096SPLWPLTPS4.080BD0.140MWT31.10MCG3.290
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodPoles incliningFlotation Date18/05/2016
SFFP0.270FFM0.705FF0.705LCFcl3.471SG1.0260
SAFP6.071FAM0.472FA0.472LCFsh3.637HBI0.588
W117.9W217.9W317.9W417.9
PD1568.3PD2566.3PD3569.1PD4565.9
WD6.160PLM9000.00GSA1.0RSA1.0RM15.3
BALLAST
TANKS
INVENTORY
IdDescriptionWeight SailingLCGVCGGAIdDescriptionWeight SailingLCGVCGGAAOUTBOARD ENGINE Min. 12 Kg   
INVENTORY
Fixed Ballast Total0
Total deductible
OTHER ITEMSIdKindDescriptionWeightLCGVCGAEngineOUTBOARD ENGINE Min. 12 KgTotal deductible

International
One Design
Certificate
2024

Boat

SB 20

MNA-1234

MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentORC0.240.821.442.322.9016.94* Copied from legacy *
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentA0.060.420.751.331.862.327.20NoNo 9.16
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentORC10.558.559.555.645.40104%44.50* Copied from legacy *