International
Certificate
2023

Boat

CHANCE

USA 28484

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat Angles43.6°41.4°39.6°38.1°37.0°36.4°36.0°
Beat VMG3.544.374.995.415.615.725.83
52°5.426.507.207.587.787.888.00
60°5.726.767.407.757.968.098.22
75°5.896.927.537.898.168.368.62
90°5.947.127.697.938.208.488.94
110°6.127.347.978.388.678.919.35
120°6.007.267.958.438.869.259.88
135°5.346.757.658.208.719.2310.47
150°4.525.736.837.628.038.379.09
Run VMG3.914.975.916.606.967.318.13
Gybe Angles143.5°147.4°147.4°150.5°150.3°171.2°175.7°

APH: 519.7

CDL: 10.740

GPH: 585.2

CertNo: US4279

BOAT
ClassJ 120DesignerJOHNSTONEBuilderTPIAge date01/2001Series date06/1994Offset fileJ120.offData fileUS4279
HULL
Length Overall12.244 mMaximum Beam3.674 mDraft2.181 mDisplacement7,348 kgDLR5.1132IMS DivisionCruiser/RacerDynamic Allowance0.210%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameter0.432m
CREW
Maximum weight1,000 kgMinimum weight750 kg * when appliedNon Manual PowerCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail45.8646.99Headsail Luffed34.5234.52Headsail FlyingSymmetricAsymmetric164.78164.78 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail13.46Storm Jib11.89Heavy Weather Jib32.10
SAIL LIMITS
Headsails6  Spinnakers5
STABILITY
Righting Moment188.5 kg·mStability Index119.4
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.
ORC Ref  03330002S27Issued on 02/09/2023Valid until 31/12/2023
VPP ver: 2023 1.03 | © ORC | www.orc.org

International
Certificate
2023

Boat

CHANCE

USA 28484

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG1017.1824.5721.2665.8642.2629.3617.2
52°663.8554.2500.2474.7462.7456.7450.2
60°629.4532.3486.8464.5452.2445.2437.7
75°611.1519.9477.9456.1441.4430.4417.7
90°606.1505.6468.4454.0438.8424.5402.9
110°588.1490.3451.5429.8415.1403.8384.9
120°599.7495.7452.8426.8406.2389.0364.2
135°674.4533.7470.4439.0413.2390.2343.9
150°796.4627.8527.3472.3448.2429.9395.9
Run VMG919.6725.0608.8545.1517.4492.6442.9
Selected Courses
Windward / Leeward968.3774.8665.0605.4579.8560.9530.1
All purpose745.7607.1536.4499.5479.8465.2442.6
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward639.10.9388
All purpose519.71.1545
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low676.40.8870
Triple Number Coastal/Long Distance Medium515.81.1632
Triple Number Coastal/Long Distance High460.41.3033
Triple Number Windward/Leeward Low871.60.6884
Triple Number Windward/Leeward Medium633.00.9479
Triple Number Windward/Leeward High554.11.0829
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance565.21.0615
Triple Number Coastal/Long Distance Low676.40.8870
Triple Number Coastal/Long Distance Medium515.81.1632
Triple Number Coastal/Long Distance High460.41.3033
Triple Number Windward/Leeward Low871.60.6884
Triple Number Windward/Leeward Medium633.00.9479
Triple Number Windward/Leeward High554.11.0829
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance963.5727.9601.7531.4497.5470.1426.7
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8207
Downwind "popa"0.9879
70% up, 30% down "Ilhabela"0.8646
30% up, 70% down "Ilhabela-inverso"0.9310
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low676.40.8870
Triple Number Coastal/Long Distance Medium515.81.1632
Triple Number Coastal/Long Distance High460.41.3033
Triple Number Windward/Leeward Low871.60.6884
Triple Number Windward/Leeward Medium633.00.9479
Triple Number Windward/Leeward High554.11.0829
Predominantly Upwind563.51.0648
Predominantly Downwind525.61.1416
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low676.40.8870
Triple Number All Purpose Medium515.81.1632
Triple Number All Purpose High460.41.3033
Triple Number Windward/Leeward Low871.60.6884
Triple Number Windward/Leeward Medium633.00.9479
Triple Number Windward/Leeward High554.11.0829
Predominantly Upwind563.51.0648
Predominantly Downwind525.61.1416
Predominantly Upwind Low762.80.7866
Predominantly Upwind Medium581.81.0313
Predominantly Upwind High532.01.1279
Predominantly Downwind Low728.30.8239
Predominantly Downwind Medium519.11.1558
Predominantly Downwind High442.91.3548
Chicago-Mac Upwind1.0446
Chicago-Mac All Purpose1.0786
Chicago-Mac Downwind1.1224
Bayview-Mac Cove Island0.9943
Bayview-Mac Shore1.0015
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching494.31.2139
Predominantly Reaching Low608.90.9854
Predominantly Reaching Medium488.41.2286
Predominantly Reaching High429.21.3978
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low953.40.6293
5-Band Low / Medium792.70.7569
5-Band Medium621.60.9653
5-Band Medium / High562.61.0664
5-Band High535.41.1206
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance565.21.0615
Triple Number Coastal/Long Distance Low676.40.8870
Triple Number Coastal/Long Distance Medium515.81.1632
Triple Number Coastal/Long Distance High460.41.3033
Triple Number Windward/Leeward Low871.60.6884
Triple Number Windward/Leeward Medium633.00.9479
Triple Number Windward/Leeward High554.11.0829
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance963.5727.9601.7531.4497.5470.1426.7
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance565.21.0615
Triple Number Coastal/Long Distance Low676.40.8870
Triple Number Coastal/Long Distance Medium515.81.1632
Triple Number Coastal/Long Distance High460.41.3033
Triple Number Windward/Leeward Low871.60.6884
Triple Number Windward/Leeward Medium633.00.9479
Triple Number Windward/Leeward High554.11.0829
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance963.5727.9601.7531.4497.5470.1426.7
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance565.2
Triple Number Coastal/Long Distance Low676.4
Triple Number Coastal/Long Distance Medium515.8
Triple Number Coastal/Long Distance High460.4
Triple Number Windward/Leeward Low871.6
Triple Number Windward/Leeward Medium633.0
Triple Number Windward/Leeward High554.1
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance963.5727.9601.7531.4497.5470.1426.7
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance565.21.0615
Triple Number Coastal/Long Distance Low676.40.8870
Triple Number Coastal/Long Distance Medium515.81.1632
Triple Number Coastal/Long Distance High460.41.3033
Triple Number Windward/Leeward Low871.60.6884
Triple Number Windward/Leeward Medium633.00.9479
Triple Number Windward/Leeward High554.11.0829
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance963.5727.9601.7531.4497.5470.1426.7
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)565.21.0615
Triple Number Coastal/Long Distance Low676.40.8870
Triple Number Coastal/Long Distance Medium515.81.1632
Triple Number Coastal/Long Distance High460.41.3033
Triple Number Windward/Leeward Low871.60.6884
Triple Number Windward/Leeward Medium633.00.9479
Triple Number Windward/Leeward High554.11.0829
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance963.5727.9601.7531.4497.5470.1426.7
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low676.40.8870
Triple Number Coastal/Long Distance Medium515.81.1632
Triple Number Coastal/Long Distance High460.41.3033
Triple Number Windward/Leeward Low871.60.6884
Triple Number Windward/Leeward Medium633.00.9479
Triple Number Windward/Leeward High554.11.0829
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8870
Triple Number Coastal/Long Distance Medium1.1632
Triple Number Coastal/Long Distance High1.3033
Triple Number Windward/Leeward Low0.6884
Triple Number Windward/Leeward Medium0.9479
Triple Number Windward/Leeward High1.0829
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance963.5727.9601.7531.4497.5470.1426.7
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance565.21.0615
Triple Number Coastal/Long Distance Low676.40.8870
Triple Number Coastal/Long Distance Medium515.81.1632
Triple Number Coastal/Long Distance High460.41.3033
Triple Number Windward/Leeward Low871.60.6884
Triple Number Windward/Leeward Medium633.00.9479
Triple Number Windward/Leeward High554.11.0829
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance963.5727.9601.7531.4497.5470.1426.7
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low676.40.8870
Triple Number Coastal/Long Distance Medium515.81.1632
Triple Number Coastal/Long Distance High460.41.3033
Triple Number Windward/Leeward Low871.60.6884
Triple Number Windward/Leeward Medium633.00.9479
Triple Number Windward/Leeward High554.11.0829
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance565.21.0615
Triple Number Coastal/Long Distance Low676.40.8870
Triple Number Coastal/Long Distance Medium515.81.1632
Triple Number Coastal/Long Distance High460.41.3033
Triple Number Windward/Leeward Low871.60.6884
Triple Number Windward/Leeward Medium633.00.9479
Triple Number Windward/Leeward High554.11.0829
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance963.5727.9601.7531.4497.5470.1426.7
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low871.60.6884
Triple Number Windward/Leeward Medium633.00.9479
Triple Number Windward/Leeward High554.11.0829
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance963.5727.9601.7531.4497.5470.1426.7
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low676.4
Triple Number Coastal/Long Distance Medium515.8
Triple Number Coastal/Long Distance High460.4
Triple Number Windward/Leeward Low871.6
Triple Number Windward/Leeward Medium633.0
Triple Number Windward/Leeward High554.1
Predominantly Upwind563.5
Predominantly Downwind525.6
Predominantly Reaching505.3
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance565.21.0615
Triple Number Coastal/Long Distance Low676.40.8870
Triple Number Coastal/Long Distance Medium515.81.1632
Triple Number Coastal/Long Distance High460.41.3033
Triple Number Windward/Leeward Low871.60.6884
Triple Number Windward/Leeward Medium633.00.9479
Triple Number Windward/Leeward High554.11.0829
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance963.5727.9601.7531.4497.5470.1426.7
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8870
Triple Number Coastal/Long Distance Medium1.1632
Triple Number Coastal/Long Distance High1.3033
Triple Number Windward/Leeward Low0.6884
Triple Number Windward/Leeward Medium0.9479
Triple Number Windward/Leeward High1.0829
Coastal/Long Distance1.0615
Predominantly Upwind1.0648
Predominantly Downwind1.1416
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.8870
Tretall Distanseseilas Mellomvind1.1632
Tretall Distanseseilas Mye vind1.3033
Tretall Pølsebane Lite vind0.6884
Tretall Pølsebane Mellomvind0.9479
Tretall Pølsebane Mye vind1.0829
Distanseseilas ett tall (OSN 8-16kn)1.0615
Distanseseilas ett tall (APH 6-20kn)1.1545
Enkeltall Motvind1.0648
Enkeltall Medvind1.1416
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low676.40.8870
Triple Number Coastal/Long Distance Medium515.81.1632
Triple Number Coastal/Long Distance High460.41.3033
Triple Number Windward/Leeward Low871.60.6884
Triple Number Windward/Leeward Medium633.00.9479
Triple Number Windward/Leeward High554.11.0829
Coastal/Long Distance565.21.0615
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind563.51.0648
Predominantly Downwind525.61.1416
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore539.31.1125
Cape Doctor Coastal449.41.3352
Triple Number Coastal/Long Distance Low676.40.8870
Triple Number Coastal/Long Distance Medium515.81.1632
Triple Number Coastal/Long Distance High460.41.3033
Triple Number Windward/Leeward Low871.60.6884
Triple Number Windward/Leeward Medium633.00.9479
Triple Number Windward/Leeward High554.11.0829
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8870
Triple Number Coastal/Long Distance Medium1.1632
Triple Number Coastal/Long Distance High1.3033
Triple Number Windward/Leeward Low0.6884
Triple Number Windward/Leeward Medium0.9479
Triple Number Windward/Leeward High1.0829
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8870
Triple Number Coastal/Long Distance Medium1.1632
Triple Number Coastal/Long Distance High1.3033
Triple Number Windward/Leeward Low0.6884
Triple Number Windward/Leeward Medium0.9479
Triple Number Windward/Leeward High1.0829
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance565.21.0615
Triple Number Coastal/Long Distance Low676.40.8870
Triple Number Coastal/Long Distance Medium515.81.1632
Triple Number Coastal/Long Distance High460.41.3033
Triple Number Windward/Leeward Low871.60.6884
Triple Number Windward/Leeward Medium633.00.9479
Triple Number Windward/Leeward High554.11.0829
Predominantly Upwind563.51.0648
Predominantly Downwind525.61.1416
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance963.5727.9601.7531.4497.5470.1426.7
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance565.21.0615
Triple Number Coastal/Long Distance Low676.40.8870
Triple Number Coastal/Long Distance Medium515.81.1632
Triple Number Coastal/Long Distance High460.41.3033
Triple Number Windward/Leeward Low871.60.6884
Triple Number Windward/Leeward Medium633.00.9479
Triple Number Windward/Leeward High554.11.0829
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance963.5727.9601.7531.4497.5470.1426.7
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low676.40.8870
Triple Number All Purpose Medium515.81.1632
Triple Number All Purpose High460.41.3033
Triple Number Windward/Leeward Low871.60.6884
Triple Number Windward/Leeward Medium633.00.9479
Triple Number Windward/Leeward High554.11.0829
Predominantly Upwind563.51.0648
Predominantly Downwind525.61.1416
Predominantly Upwind Low762.80.7866
Predominantly Upwind Medium581.81.0313
Predominantly Upwind High532.01.1279
Predominantly Downwind Low728.30.8239
Predominantly Downwind Medium519.11.1558
Predominantly Downwind High442.91.3548
Chicago-Mac Upwind1.0446
Chicago-Mac All Purpose1.0786
Chicago-Mac Downwind1.1224
Bayview-Mac Cove Island0.9943
Bayview-Mac Shore1.0015
Harvest Moon Regatta454.41.3203
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy537.11.1171
San Francisco Bay Medium626.00.9585
Predominantly Reaching494.31.2139
Predominantly Reaching Low608.90.9854
Predominantly Reaching Medium488.41.2286
Predominantly Reaching High429.21.3978
Windward/Leeward 60-40 Low881.40.6807
Windward/Leeward 60-40 Medium653.00.9189
Windward/Leeward 60-40 High579.21.0359
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low953.40.6293
5-Band Low / Medium792.70.7569
5-Band Medium621.60.9653
5-Band Medium / High562.61.0664
5-Band High535.41.1206
ORC Ref  03330002S27Issued on 02/09/2023Valid until 31/12/2023
VPP ver: 2023 1.03 | © ORC | www.orc.org

International
Certificate
2023

Boat

CHANCE

USA 28484

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ 120Measurement28/03/2018HINPlan reviewHull constructionCoredCarbon RudderYesLight stanchionsNoTrim tabNo
LOA12.244Max. Beam3.674Draft2.181Displacement7,348Wetted area31.52IMS L11.420LSM011.284Acc. length11.941Sink (kg/mm) 23.96
VCGD0.008VCGM-0.082RM Rated (kg·m) 188.5Limit of positive stability(°) 115.0Stability Index119.4
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.432PBW0.114PIPA0.0051
PSD0.024PHD0.073PHL0.125
PSA19.0°ESL0.978
ST10.018ST20.082ST30.082
ST40.055ST50.216
RIG
Forestay tensionAftInner stayNone FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays1Spreaders2Rotating mastNo
P14.173IG15.325ISP16.051MDT10.122MDL10.226MDT20.113MDL20.183TL2.286MW0.183GO0.210
E5.425J4.420BAS1.676FSD0.030SFJSPL0.000WPLTPS6.553BD0.137MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodPoles incliningFlotation Date28/03/2018MeasurerComment
SFFP0.914FFM1.213FF1.214LCFcl6.795SG1.0230
SAFP11.631FAM0.866FA0.867LCFsh7.038HBI1.063
W178.1W278.1W378.1W478.1
PD1318.0PD2318.0PD3318.0PD4318.0
WD14.100PLM3185.00GSA49.5RSA2028.0RM188.4
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03330002S27Issued on 02/09/2023Valid until 31/12/2023
VPP ver: 2023 1.03 | © ORC | www.orc.org

International
Certificate
2023

Boat

CHANCE

USA 28484

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentMN1-230.181.142.063.524.5545.8614/06/2023OUS152970-0013di Main0.161.122.043.494.4945.4309/01/2022OUS113211-001
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment00.100.601.112.183.274.4715.60YesNo 34.52**Copied from ORR**Med/Heavy Jib0.060.591.142.233.284.3515.63YesNo 34.5209/02/2022Sail ID: OUS149165-001Jib 3Di0.060.591.112.173.274.4415.60YesNo 34.3615/08/2023OUS152967-001
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentA220.0016.4918.2510.5511.9988%164.7802/08/2023OUS153750-001
ORC Ref  03330002S27Issued on 02/09/2023Valid until 31/12/2023
VPP ver: 2023 1.03 | © ORC | www.orc.org