Club
Certificate
2024

Boat

BIG DREAM

JPN 6953

JAPAN SAILING FEDERATION
4-2, Kasumigaokacho,
Shinjuku, Tokyo
Japan
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat Angles41.9°39.9°37.8°37.5°37.3°37.4°37.9°39.8°
Beat VMG3.604.284.684.834.904.934.934.80
52°5.426.186.566.726.796.836.896.86
60°5.666.356.706.886.987.037.127.13
75°5.826.466.827.077.257.357.507.59
90°5.716.436.837.137.397.617.898.10
110°5.456.406.907.307.647.948.408.80
120°5.266.256.817.227.618.008.879.82
135°4.725.776.476.927.327.738.7010.76
150°3.975.025.916.536.947.328.119.28
Run VMG3.444.355.145.826.396.827.538.31
Gybe Angles144.4°149.8°154.1°162.2°176.3°179.0°179.0°178.0°
APH ToD:583.2CDL: 8.014APH ToT: 1.0287CertNo:240130
BOAT
ClassSWING 31DesignerICHIRO YOKOYAMABuilderTSUBOI YACHTAge date05/1991Series date01/1989Offset fileJCBIY52.offData fileJC240130
HULL
Length Overall9.498 mMaximum Beam3.252 mDraft1.735 mDisplacement2,815 kgDLR6.0943IMS DivisionPerformanceDynamic Allowance0.000%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.382m
CREW
Maximum weight477 kg(default)Minimum weight347 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail30.3031.13Headsail Luffed26.6126.61Headsail FlyingSymmetric54.0554.05Asymmetric
STORM SAIL AREAS (m²)
Trysail8.63Storm Jib6.28Heavy Weather Jib16.94
SAIL LIMITS
Headsails5  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
Certificate
2024

Boat

BIG DREAM

JPN 6953

JAPAN SAILING FEDERATION
4-2, Kasumigaokacho,
Shinjuku, Tokyo
Japan
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat VMG999.2840.2768.6744.7734.8730.8730.6749.6
52°664.6582.1549.2535.9530.1526.8522.9524.4
60°635.6566.8537.5522.9516.1511.8505.9505.0
75°618.6557.0528.0509.0496.6489.8479.7474.6
90°630.4559.6527.3505.0486.9473.3456.2444.6
110°660.7562.8521.6493.4471.0453.3428.7409.2
120°684.0576.0528.9498.4473.0450.1405.8366.8
135°762.2624.1556.1519.9491.7466.0413.7334.7
150°907.0716.4609.5551.7518.4491.8443.8388.0
Run VMG1047.4827.3700.2619.0563.4528.1477.9433.0
Selected Courses
Windward / Leeward1023.3833.7734.4681.9649.1629.4604.2591.3
All purpose789.1661.9599.9566.7545.6530.9508.2489.4
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward709.00.8463
All purpose583.21.0287
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low725.50.8270
Triple Number Coastal/Long Distance Medium580.41.0337
Triple Number Coastal/Long Distance High526.01.1406
Triple Number Windward/Leeward Low928.50.6462
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High624.90.9602
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance632.40.9488
Triple Number Coastal/Long Distance Low725.50.8270
Triple Number Coastal/Long Distance Medium580.41.0337
Triple Number Coastal/Long Distance High526.01.1406
Triple Number Windward/Leeward Low928.50.6462
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High624.90.9602
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1025.7787.9668.7602.7565.8536.1484.4463.9
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7569
Downwind "popa"0.8817
70% up, 30% down "Ilhabela"0.7905
30% up, 70% down "Ilhabela-inverso"0.8402
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low725.50.8270
Triple Number Coastal/Long Distance Medium580.41.0337
Triple Number Coastal/Long Distance High526.01.1406
Triple Number Windward/Leeward Low928.50.6462
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High624.90.9602
Predominantly Upwind625.60.9592
Predominantly Downwind595.31.0079
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low725.50.8270
Triple Number AP Medium580.51.0336
Triple Number AP High526.01.1406
Triple Number Windward/Leeward Low928.50.6462
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High624.90.9602
Single Number Predominant Upwind623.80.9619
Single Number Predominant Reaching561.31.0690
Single Number Predominant Downwind596.51.0058
Predominant Upwind - Low780.10.7691
Predominant Upwind - Low/Med671.40.8936
Predominant Upwind - Medium609.40.9846
Predominant Upwind - Med/High579.01.0363
Predominant Upwind - High564.81.0623
Predominant Downwind Low807.90.7427
Predominant Downwind Low/Med668.50.8975
Predominant Downwind Medium577.01.0398
Predominant Downwind Med/High517.01.1606
Predominant Downwind High477.21.2574
Predominant Reaching Low711.20.8437
Predominant Reaching Low/Med611.00.9821
Predominant Reaching Medium548.11.0946
Predominant Reaching Med/High507.31.1827
Predominant Reaching High479.51.2512
SA/DSPL Upwind28.45SA/DSPL Downwind42.16
Scoring OptionTODTOT
5-Band Windward/Leeward Low980.20.6121
5-Band Windward/Leeward Low/Med804.20.7461
5-Band Windward/Leeward Medium693.30.8654
5-Band Windward/Leeward Med/High632.90.9481
5-Band Windward/Leeward High606.30.9895
Windward/Leeward 60-40 Low976.80.6142
Windward/Leeward 60-40 Low/Med808.20.7424
Windward/Leeward 60-40 Medium705.40.8506
Windward/Leeward 60-40 Med/High652.80.9191
Windward/Leeward 60-40 High631.90.9496
5-Band AP Low760.30.7892
5-Band AP Low/Med644.70.9306
5-Band AP Medium573.61.0461
5-Band AP Med/High532.51.1267
5-Band AP High508.81.1791
5-Band SF Bay Tour - Low928.60.6462
5-Band SF Bay Tour - Low/Med768.80.7805
5-Band SF Bay Tour - Medium671.40.8937
5-Band SF Bay Tour - Med/High619.60.9684
5-Band SF Bay Tour - High594.21.0097
Chicago-Mac Upwind0.9447
Chicago-Mac All Purpose0.9658
Chicago-Mac Downwind0.9910
Bayview-Mac Cove Island0.9103
Bayview-Mac Shore0.9198
Harvest Moon Regatta511.41.1733
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance632.40.9488
Triple Number Coastal/Long Distance Low725.50.8270
Triple Number Coastal/Long Distance Medium580.41.0337
Triple Number Coastal/Long Distance High526.01.1406
Triple Number Windward/Leeward Low928.50.6462
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High624.90.9602
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1025.7787.9668.7602.7565.8536.1484.4463.9
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance632.40.9488
Triple Number Coastal/Long Distance Low725.50.8270
Triple Number Coastal/Long Distance Medium580.41.0337
Triple Number Coastal/Long Distance High526.01.1406
Triple Number Windward/Leeward Low928.50.6462
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High624.90.9602
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1025.7787.9668.7602.7565.8536.1484.4463.9
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance632.4
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1025.7787.9668.7602.7565.8536.1484.4463.9
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low725.50.8270
Triple Number Coastal/Long Distance Medium580.41.0337
Triple Number Coastal/Long Distance High526.01.1406
Triple Number Windward/Leeward Low928.50.6462
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High624.90.9602
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating (Coastal/Long Distance)632.40.9488
Triple Number Coastal/Long Distance Low725.50.8270
Triple Number Coastal/Long Distance Medium580.41.0337
Triple Number Coastal/Long Distance High526.01.1406
Triple Number Windward/Leeward Low928.50.6462
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High624.90.9602
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1025.7787.9668.7602.7565.8536.1484.4463.9
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low725.50.8270
Triple Number Coastal/Long Distance Medium580.41.0337
Triple Number Coastal/Long Distance High526.01.1406
Triple Number Windward/Leeward Low928.50.6462
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High624.90.9602
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8270
Triple Number Coastal/Long Distance Medium1.0337
Triple Number Coastal/Long Distance High1.1406
Triple Number Windward/Leeward Low0.6462
Triple Number Windward/Leeward Medium0.8525
Triple Number Windward/Leeward High0.9602
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1025.7787.9668.7602.7565.8536.1484.4463.9
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance632.40.9488
Triple Number Coastal/Long Distance Low725.50.8270
Triple Number Coastal/Long Distance Medium580.41.0337
Triple Number Coastal/Long Distance High526.01.1406
Triple Number Windward/Leeward Low928.50.6462
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High624.90.9602
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1025.7787.9668.7602.7565.8536.1484.4463.9
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low725.50.8270
Triple Number Coastal/Long Distance Medium580.41.0337
Triple Number Coastal/Long Distance High526.01.1406
Triple Number Windward/Leeward Low928.50.6462
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High624.90.9602
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance632.40.9488
Triple Number Coastal/Long Distance Low725.50.8270
Triple Number Coastal/Long Distance Medium580.41.0337
Triple Number Coastal/Long Distance High526.01.1406
Triple Number Windward/Leeward Low928.50.6462
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High624.90.9602
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1025.7787.9668.7602.7565.8536.1484.4463.9
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance632.40.9488
Triple Number Coastal/Long Distance Low725.50.8270
Triple Number Coastal/Long Distance Medium580.41.0337
Triple Number Coastal/Long Distance High526.01.1406
Triple Number Windward/Leeward Low928.50.6462
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High624.90.9602
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1025.7787.9668.7602.7565.8536.1484.4463.9
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low725.5
Triple Number Coastal/Long Distance Medium580.4
Triple Number Coastal/Long Distance High526.0
Triple Number Windward/Leeward Low928.5
Triple Number Windward/Leeward Medium703.8
Triple Number Windward/Leeward High624.9
Predominantly Upwind625.6
Predominantly Downwind595.3
Predominantly Reaching570.8
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance632.40.9488
Triple Number Coastal/Long Distance Low725.50.8270
Triple Number Coastal/Long Distance Medium580.41.0337
Triple Number Coastal/Long Distance High526.01.1406
Triple Number Windward/Leeward Low928.50.6462
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High624.90.9602
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1025.7787.9668.7602.7565.8536.1484.4463.9
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8270
Triple Number Coastal/Long Distance Medium1.0337
Triple Number Coastal/Long Distance High1.1406
Triple Number Windward/Leeward Low0.6462
Triple Number Windward/Leeward Medium0.8525
Triple Number Windward/Leeward High0.9602
Coastal/Long Distance0.9488
Predominantly Upwind0.9592
Predominantly Downwind1.0079
For information
General Purpose Handicap (GPH)649.2
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.8270
Tretall Distanseseilas Mellomvind1.0337
Tretall Distanseseilas Mye vind1.1406
Tretall Pølsebane Lite vind0.6462
Tretall Pølsebane Mellomvind0.8525
Tretall Pølsebane Mye vind0.9602
Distanseseilas ett tall (OSN 8-16kn)0.9488
Distanseseilas ett tall (APH 6-20kn)1.0287
Enkeltall Motvind0.9592
Enkeltall Medvind1.0079
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low725.50.8270
Triple Number Coastal/Long Distance Medium580.41.0337
Triple Number Coastal/Long Distance High526.01.1406
Triple Number Windward/Leeward Low928.50.6462
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High624.90.9602
Coastal/Long Distance632.40.9488
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind625.60.9592
Predominantly Downwind595.31.0079
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore595.21.0081
Cape Doctor Coastal495.01.2120
Triple Number Coastal/Long Distance Low725.50.8270
Triple Number Coastal/Long Distance Medium580.41.0337
Triple Number Coastal/Long Distance High526.01.1406
Triple Number Windward/Leeward Low928.50.6462
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High624.90.9602
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8270
Triple Number Coastal/Long Distance Medium1.0337
Triple Number Coastal/Long Distance High1.1406
Triple Number Windward/Leeward Low0.6462
Triple Number Windward/Leeward Medium0.8525
Triple Number Windward/Leeward High0.9602
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8270
Triple Number Coastal/Long Distance Medium1.0337
Triple Number Coastal/Long Distance High1.1406
Triple Number Windward/Leeward Low0.6462
Triple Number Windward/Leeward Medium0.8525
Triple Number Windward/Leeward High0.9602
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance632.40.9488
Triple Number Coastal/Long Distance Low725.50.8270
Triple Number Coastal/Long Distance Medium580.41.0337
Triple Number Coastal/Long Distance High526.01.1406
Triple Number Windward/Leeward Low928.50.6462
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High624.90.9602
Predominantly Upwind625.60.9592
Predominantly Downwind595.31.0079
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1025.7787.9668.7602.7565.8536.1484.4463.9
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance632.40.9488
Triple Number Coastal/Long Distance Low725.50.8270
Triple Number Coastal/Long Distance Medium580.41.0337
Triple Number Coastal/Long Distance High526.01.1406
Triple Number Windward/Leeward Low928.50.6462
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High624.90.9602
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1025.7787.9668.7602.7565.8536.1484.4463.9
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low725.50.8270
Triple Number AP Medium580.51.0336
Triple Number AP High526.01.1406
Triple Number Windward/Leeward Low928.50.6462
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High624.90.9602
Single Number Predominant Upwind623.80.9619
Single Number Predominant Reaching561.31.0690
Single Number Predominant Downwind596.51.0058
Predominant Upwind - Low780.10.7691
Predominant Upwind - Low/Med671.40.8936
Predominant Upwind - Medium609.40.9846
Predominant Upwind - Med/High579.01.0363
Predominant Upwind - High564.81.0623
Predominant Downwind Low807.90.7427
Predominant Downwind Low/Med668.50.8975
Predominant Downwind Medium577.01.0398
Predominant Downwind Med/High517.01.1606
Predominant Downwind High477.21.2574
Predominant Reaching Low711.20.8437
Predominant Reaching Low/Med611.00.9821
Predominant Reaching Medium548.11.0946
Predominant Reaching Med/High507.31.1827
Predominant Reaching High479.51.2512
SA/DSPL Upwind28.45SA/DSPL Downwind42.16
Scoring OptionTODTOT
5-Band Windward/Leeward Low980.20.6121
5-Band Windward/Leeward Low/Med804.20.7461
5-Band Windward/Leeward Medium693.30.8654
5-Band Windward/Leeward Med/High632.90.9481
5-Band Windward/Leeward High606.30.9895
Windward/Leeward 60-40 Low976.80.6142
Windward/Leeward 60-40 Low/Med808.20.7424
Windward/Leeward 60-40 Medium705.40.8506
Windward/Leeward 60-40 Med/High652.80.9191
Windward/Leeward 60-40 High631.90.9496
5-Band AP Low760.30.7892
5-Band AP Low/Med644.70.9306
5-Band AP Medium573.61.0461
5-Band AP Med/High532.51.1267
5-Band AP High508.81.1791
5-Band SF Bay Tour - Low928.60.6462
5-Band SF Bay Tour - Low/Med768.80.7805
5-Band SF Bay Tour - Medium671.40.8937
5-Band SF Bay Tour - Med/High619.60.9684
5-Band SF Bay Tour - High594.21.0097
Chicago-Mac Upwind0.9447
Chicago-Mac All Purpose0.9658
Chicago-Mac Downwind0.9910
Bayview-Mac Cove Island0.9103
Bayview-Mac Shore0.9198
Harvest Moon Regatta511.41.1733

Club
Certificate
2024

Boat

BIG DREAM

JPN 6953

JAPAN SAILING FEDERATION
4-2, Kasumigaokacho,
Shinjuku, Tokyo
Japan
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassSWING 31Measurement02/07/2022HINPlan reviewHull constructionCoredCarbon RudderNoLight stanchionsNoTrim tabNo
LOA9.498Max. Beam3.252Draft1.735Displacement2,815Wetted area16.36IMS L7.988LSM07.730Acc. length9.498Sink (kg/mm) 12.76
VCGD-0.030VCGM-0.006RM Rated (kg·m) 60.6Limit of positive stability(°) N/AStability IndexN/ADefault crew weight477Declared crew weightN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.382PBWPIPA0.0006
EDLST1ST2
ST3ST4ST5
RIG
Forestay tensionAftInner stayNone FittedMast materialSingle headsail furlerNoMainsail furlerArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunners/Checkstays0Spreaders2Rotating mastNo
P11.600IG11.200ISP11.200MDT10.087MDL10.135MDT2MDL2TLTaperMWGO
E4.250J3.280BAS1.570FSDFoilSFJ0.120SPL3.303WPLTPSBDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date02/07/2022
BALLAST
TANKS
IdDescriptionCapacityLCGVCGSp.WghtLevel
Sailing
14.020.8400
INVENTORY
IdDescriptionWeight SailingLCGVCGGAIdDescriptionWeight SailingLCGVCGGA15.70    25.85   
INVENTORY
Fixed Ballast Total0
TANKSIdDescriptionSp.WghtCapacityConditionLCGVCG1Fuel184.02Total deductible154.02
OTHER ITEMSIdKindDescriptionWeightLCGVCG1Battery125.702Battery125.85Total deductible0

Club
Certificate
2024

Boat

BIG DREAM

JPN 6953

JAPAN SAILING FEDERATION
4-2, Kasumigaokacho,
Shinjuku, Tokyo
Japan
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.211.071.772.813.6030.30
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment10.060.611.172.383.725.1310.75NoNo 26.61
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment211.0811.1011.095.905.6454.05111.0811.0811.085.905.4653.66