International
Certificate
Double Handed
2023

Boat

BELLA

EST25

Estonian Yachting Union
Purje 8, maja 3
11911 Tallinn
Estonia
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat Angles43.0°40.8°40.6°41.4°42.0°42.6°44.2°
Beat VMG2.623.113.393.523.563.583.52
52°3.964.604.995.195.305.355.35
60°4.144.805.185.385.505.575.61
75°4.264.955.355.575.725.845.97
90°4.184.925.375.645.835.996.23
110°3.814.655.255.625.876.106.47
120°3.654.485.135.545.826.066.49
135°3.274.124.805.315.635.896.36
150°2.853.694.384.965.395.686.15
Run VMG2.483.233.904.495.015.395.90
Gybe Angles152.0°159.5°169.4°173.6°176.6°179.0°179.0°

APH: 774.6

CDL: 4.988

GPH: 869.8

CertNo: 066/21

BOAT
ClassBELLONA 23DesignerBuilderRootsiAge date01/1976Series date01/1976Offset fileBELLONA23-EST25.offData fileEST25
HULL
Length Overall7.050 mMaximum Beam2.496 mDraft1.309 mDisplacement1,835 kgDLR10.5126IMS DivisionCruiser/RacerDynamic Allowance0.610%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.330m
CREW
Maximum weight180 kgMinimum weight120 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail11.6811.88Headsail Luffed15.0915.09Headsail FlyingSymmetricAsymmetric
STORM SAIL AREAS (m²)
Trysail3.37Storm Jib4.15Heavy Weather Jib11.20
SAIL LIMITS
Headsails5  Spinnakers0 * Spinnaker pole aboard
STABILITY
Righting Moment21.2 kg·mStability Index123.4
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
Certificate
Double Handed
2023

Boat

BELLA

EST25

Estonian Yachting Union
Purje 8, maja 3
11911 Tallinn
Estonia
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG1374.31157.11060.91023.01010.91006.41023.2
52°910.1782.1721.5693.8679.2672.9672.3
60°868.9750.7695.6669.4654.5646.3641.5
75°844.7726.9672.9646.1629.0616.3602.7
90°861.5732.2670.6638.7617.7601.4578.1
110°944.0774.8685.1641.1613.0590.3556.1
120°986.9802.9701.7650.0618.9594.0554.3
135°1099.7874.8750.1678.4638.9611.1565.7
150°1261.7976.1822.5725.4668.0633.7585.1
Run VMG1454.21114.5923.4801.9719.2667.4609.8
Selected Courses
Windward / Leeward1414.31135.8992.2912.5865.0836.9816.5
All purpose1097.0899.2798.9745.6715.2695.8675.6
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward954.00.6289
All purpose774.60.7746
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low998.20.6011
Triple Number Coastal/Long Distance Medium768.50.7807
Triple Number Coastal/Long Distance High693.10.8657
Triple Number Windward/Leeward Low1275.00.4706
Triple Number Windward/Leeward Medium945.80.6344
Triple Number Windward/Leeward High836.20.7175
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance842.20.7124
Triple Number Coastal/Long Distance Low998.20.6011
Triple Number Coastal/Long Distance Medium768.50.7807
Triple Number Coastal/Long Distance High693.10.8657
Triple Number Windward/Leeward Low1275.00.4706
Triple Number Windward/Leeward Medium945.80.6344
Triple Number Windward/Leeward High836.20.7175
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1418.31071.7897.5797.8742.9701.3636.4
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.5486
Downwind "popa"0.6677
70% up, 30% down "Ilhabela"0.5796
30% up, 70% down "Ilhabela-inverso"0.6269
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low998.20.6011
Triple Number Coastal/Long Distance Medium768.50.7807
Triple Number Coastal/Long Distance High693.10.8657
Triple Number Windward/Leeward Low1275.00.4706
Triple Number Windward/Leeward Medium945.80.6344
Triple Number Windward/Leeward High836.20.7175
Predominantly Upwind835.10.7185
Predominantly Downwind787.20.7622
Custom scoring options for Canada
Scoring OptionTime On
Distance
Time On
Time
Triple Number All Purpose Low998.20.6011
Triple Number All Purpose Medium768.50.7807
Triple Number All Purpose High693.10.8657
Triple Number Windward/Leeward Low1275.00.4706
Triple Number Windward/Leeward Medium945.80.6344
Triple Number Windward/Leeward High836.20.7175
Predominantly Upwind835.10.7185
Predominantly Downwind787.20.7622
Predominantly Upwind Low1085.70.5526
Predominantly Upwind Medium862.30.6958
Predominantly Upwind High823.90.7282
Predominantly Downwind Low1112.80.5392
Predominantly Downwind Medium779.30.7700
Predominantly Downwind High642.60.9338
Chicago-Mac Upwind0.7053
Chicago-Mac All Purpose0.7259
Chicago-Mac Downwind0.7477
Bayview-Mac Cove Island0.6792
Bayview-Mac Shore0.6881
Scoring OptionTime On
Distance
Time On
Time
Predominantly Reaching732.50.8191
Predominantly Reaching Low912.30.6577
Predominantly Reaching Medium727.30.8250
Predominantly Reaching High640.60.9366
5-Band
Windward/Leeward
Time On
Distance
Time On
Time
5-Band Low1392.90.4308
5-Band Low / Medium1166.00.5146
5-Band Medium930.10.6451
5-Band Medium / High844.60.7104
5-Band High820.00.7317
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance842.20.7124
Triple Number Coastal/Long Distance Low998.20.6011
Triple Number Coastal/Long Distance Medium768.50.7807
Triple Number Coastal/Long Distance High693.10.8657
Triple Number Windward/Leeward Low1275.00.4706
Triple Number Windward/Leeward Medium945.80.6344
Triple Number Windward/Leeward High836.20.7175
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1418.31071.7897.5797.8742.9701.3636.4
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance842.20.7124
Triple Number Coastal/Long Distance Low998.20.6011
Triple Number Coastal/Long Distance Medium768.50.7807
Triple Number Coastal/Long Distance High693.10.8657
Triple Number Windward/Leeward Low1275.00.4706
Triple Number Windward/Leeward Medium945.80.6344
Triple Number Windward/Leeward High836.20.7175
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1418.31071.7897.5797.8742.9701.3636.4
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance842.2
Triple Number Coastal/Long Distance Low998.2
Triple Number Coastal/Long Distance Medium768.5
Triple Number Coastal/Long Distance High693.1
Triple Number Windward/Leeward Low1275.0
Triple Number Windward/Leeward Medium945.8
Triple Number Windward/Leeward High836.2
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1418.31071.7897.5797.8742.9701.3636.4
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance842.20.7124
Triple Number Coastal/Long Distance Low998.20.6011
Triple Number Coastal/Long Distance Medium768.50.7807
Triple Number Coastal/Long Distance High693.10.8657
Triple Number Windward/Leeward Low1275.00.4706
Triple Number Windward/Leeward Medium945.80.6344
Triple Number Windward/Leeward High836.20.7175
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1418.31071.7897.5797.8742.9701.3636.4
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating (Coastal/Long Distance)842.20.7124
Triple Number Coastal/Long Distance Low998.20.6011
Triple Number Coastal/Long Distance Medium768.50.7807
Triple Number Coastal/Long Distance High693.10.8657
Triple Number Windward/Leeward Low1275.00.4706
Triple Number Windward/Leeward Medium945.80.6344
Triple Number Windward/Leeward High836.20.7175
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1418.31071.7897.5797.8742.9701.3636.4
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low998.20.6011
Triple Number Coastal/Long Distance Medium768.50.7807
Triple Number Coastal/Long Distance High693.10.8657
Triple Number Windward/Leeward Low1275.00.4706
Triple Number Windward/Leeward Medium945.80.6344
Triple Number Windward/Leeward High836.20.7175
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6011
Triple Number Coastal/Long Distance Medium0.7807
Triple Number Coastal/Long Distance High0.8657
Triple Number Windward/Leeward Low0.4706
Triple Number Windward/Leeward Medium0.6344
Triple Number Windward/Leeward High0.7175
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1418.31071.7897.5797.8742.9701.3636.4
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance842.20.7124
Triple Number Coastal/Long Distance Low998.20.6011
Triple Number Coastal/Long Distance Medium768.50.7807
Triple Number Coastal/Long Distance High693.10.8657
Triple Number Windward/Leeward Low1275.00.4706
Triple Number Windward/Leeward Medium945.80.6344
Triple Number Windward/Leeward High836.20.7175
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1418.31071.7897.5797.8742.9701.3636.4
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low998.20.6011
Triple Number Coastal/Long Distance Medium768.50.7807
Triple Number Coastal/Long Distance High693.10.8657
Triple Number Windward/Leeward Low1275.00.4706
Triple Number Windward/Leeward Medium945.80.6344
Triple Number Windward/Leeward High836.20.7175
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance842.20.7124
Triple Number Coastal/Long Distance Low998.20.6011
Triple Number Coastal/Long Distance Medium768.50.7807
Triple Number Coastal/Long Distance High693.10.8657
Triple Number Windward/Leeward Low1275.00.4706
Triple Number Windward/Leeward Medium945.80.6344
Triple Number Windward/Leeward High836.20.7175
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1418.31071.7897.5797.8742.9701.3636.4
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Triple Number Windward/Leeward Low1275.00.4706
Triple Number Windward/Leeward Medium945.80.6344
Triple Number Windward/Leeward High836.20.7175
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1418.31071.7897.5797.8742.9701.3636.4
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low998.2
Triple Number Coastal/Long Distance Medium768.5
Triple Number Coastal/Long Distance High693.1
Triple Number Windward/Leeward Low1275.0
Triple Number Windward/Leeward Medium945.8
Triple Number Windward/Leeward High836.2
Predominantly Upwind835.1
Predominantly Downwind787.2
Predominantly Reaching752.2
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance842.20.7124
Triple Number Coastal/Long Distance Low998.20.6011
Triple Number Coastal/Long Distance Medium768.50.7807
Triple Number Coastal/Long Distance High693.10.8657
Triple Number Windward/Leeward Low1275.00.4706
Triple Number Windward/Leeward Medium945.80.6344
Triple Number Windward/Leeward High836.20.7175
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1418.31071.7897.5797.8742.9701.3636.4
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6011
Triple Number Coastal/Long Distance Medium0.7807
Triple Number Coastal/Long Distance High0.8657
Triple Number Windward/Leeward Low0.4706
Triple Number Windward/Leeward Medium0.6344
Triple Number Windward/Leeward High0.7175
Coastal/Long Distance0.7124
Predominantly Upwind0.7185
Predominantly Downwind0.7622
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.6011
Tretall Distanseseilas Mellomvind0.7807
Tretall Distanseseilas Mye vind0.8657
Tretall Pølsebane Lite vind0.4706
Tretall Pølsebane Mellomvind0.6344
Tretall Pølsebane Mye vind0.7175
Distanseseilas ett tall (OSN 8-16kn)0.7124
Distanseseilas ett tall (APH 6-20kn)0.7746
Enkeltall Motvind0.7185
Enkeltall Medvind0.7622
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low998.20.6011
Triple Number Coastal/Long Distance Medium768.50.7807
Triple Number Coastal/Long Distance High693.10.8657
Triple Number Windward/Leeward Low1275.00.4706
Triple Number Windward/Leeward Medium945.80.6344
Triple Number Windward/Leeward High836.20.7175
Coastal/Long Distance842.20.7124
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind835.10.7185
Predominantly Downwind787.20.7622
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore822.60.7294
Cape Doctor Coastal681.70.8802
Triple Number Coastal/Long Distance Low998.20.6011
Triple Number Coastal/Long Distance Medium768.50.7807
Triple Number Coastal/Long Distance High693.10.8657
Triple Number Windward/Leeward Low1275.00.4706
Triple Number Windward/Leeward Medium945.80.6344
Triple Number Windward/Leeward High836.20.7175
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6011
Triple Number Coastal/Long Distance Medium0.7807
Triple Number Coastal/Long Distance High0.8657
Triple Number Windward/Leeward Low0.4706
Triple Number Windward/Leeward Medium0.6344
Triple Number Windward/Leeward High0.7175
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6011
Triple Number Coastal/Long Distance Medium0.7807
Triple Number Coastal/Long Distance High0.8657
Triple Number Windward/Leeward Low0.4706
Triple Number Windward/Leeward Medium0.6344
Triple Number Windward/Leeward High0.7175
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance842.20.7124
Triple Number Coastal/Long Distance Low998.20.6011
Triple Number Coastal/Long Distance Medium768.50.7807
Triple Number Coastal/Long Distance High693.10.8657
Triple Number Windward/Leeward Low1275.00.4706
Triple Number Windward/Leeward Medium945.80.6344
Triple Number Windward/Leeward High836.20.7175
Predominantly Upwind835.10.7185
Predominantly Downwind787.20.7622
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1418.31071.7897.5797.8742.9701.3636.4
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance842.20.7124
Triple Number Coastal/Long Distance Low998.20.6011
Triple Number Coastal/Long Distance Medium768.50.7807
Triple Number Coastal/Long Distance High693.10.8657
Triple Number Windward/Leeward Low1275.00.4706
Triple Number Windward/Leeward Medium945.80.6344
Triple Number Windward/Leeward High836.20.7175
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1418.31071.7897.5797.8742.9701.3636.4
Custom scoring options for United States of America
Scoring OptionTime On
Distance
Time On
Time
Triple Number All Purpose Low998.20.6011
Triple Number All Purpose Medium768.50.7807
Triple Number All Purpose High693.10.8657
Triple Number Windward/Leeward Low1275.00.4706
Triple Number Windward/Leeward Medium945.80.6344
Triple Number Windward/Leeward High836.20.7175
Predominantly Upwind835.10.7185
Predominantly Downwind787.20.7622
Predominantly Upwind Low1085.70.5526
Predominantly Upwind Medium862.30.6958
Predominantly Upwind High823.90.7282
Predominantly Downwind Low1112.80.5392
Predominantly Downwind Medium779.30.7700
Predominantly Downwind High642.60.9338
Chicago-Mac Upwind0.7053
Chicago-Mac All Purpose0.7259
Chicago-Mac Downwind0.7477
Bayview-Mac Cove Island0.6792
Bayview-Mac Shore0.6881
Harvest Moon Regatta664.20.9033
Scoring OptionTime On
Distance
Time On
Time
San Francisco Bay Heavy826.10.7263
San Francisco Bay Medium941.00.6376
Predominantly Reaching732.50.8191
Predominantly Reaching Low912.30.6577
Predominantly Reaching Medium727.30.8250
Predominantly Reaching High640.60.9366
Windward/Leeward 60-40 Low1273.20.4713
Windward/Leeward 60-40 Medium979.20.6128
Windward/Leeward 60-40 High896.70.6691
5-Band
Windward/Leeward
Time On
Distance
Time On
Time
5-Band Low1392.90.4308
5-Band Low / Medium1166.00.5146
5-Band Medium930.10.6451
5-Band Medium / High844.60.7104
5-Band High820.00.7317

International
Certificate
Double Handed
2023

Boat

BELLA

EST25

Estonian Yachting Union
Purje 8, maja 3
11911 Tallinn
Estonia
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassBELLONA 23MeasurementHINPlan reviewHull constructionSolidCarbon RudderYesLight stanchionsNoTrim tabNo
LOA7.050Max. Beam2.496Draft1.309Displacement1,835Wetted area11.23IMS L5.715LSM05.588Acc. length7.050Sink (kg/mm) 7.35
VCGD0.091VCGM-0.049RM Rated (kg·m) 21.2Limit of positive stability(°) 127.1Stability Index123.4
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.330PBWPIPA0.0033
EDL1.200ST10.052ST20.148
ST30.378ST40.100ST50.300
RIG
Forestay tensionAftInner stayNone FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders1Rotating mastNo
P7.850IG8.900ISP8.950MDT10.089MDL10.113MDT20.089MDL20.113TLMW0.113GO0.170
E2.450J2.500BAS1.050FSD0.006SFJ0.550SPL2.580WPLTPS3.500BD0.070MWT47.90MCG2.830
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodPoles incliningFlotation Date03/07/2020MeasurerEST7Comment
SFFP0.000FFM0.890FF0.898LCFcl3.883SG1.0000
SAFP6.789FAM0.756FA0.761LCFsh4.048HBI0.884
W124.0W224.0W324.0W424.0
PD1634.7PD2632.9PD3634.6PD4632.5
WD7.100PLM9000.00GSA1.0RSA1.0RM21.2
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
OTHER ITEMSIdKindDescriptionWeightLCGVCG1MiscellaneousiCharger 4010Duo22.501Battery8x40Ah182.502Battery20Ah42.503Battery20Ah44.001Engine EletricTotal deductible0

International
Certificate
Double Handed
2023

Boat

BELLA

EST25

Estonian Yachting Union
Purje 8, maja 3
11911 Tallinn
Estonia
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.140.540.961.612.0911.68
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment40.040.380.771.642.583.548.88NoNo 15.0910.040.370.731.351.952.548.94YesNo 11.8220.040.350.681.311.932.547.15YesNo 9.2830.060.260.501.001.552.147.05YesNo 7.32