International
Certificate
2023

Boat

DARK STORM

USA 61219

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 Angles42.9°40.6°38.7°37.5°37.0°37.0°37.0°
Beat VMG4.024.925.485.715.845.925.97
52°6.127.257.798.028.148.238.31
60°6.457.497.988.258.398.508.63
75°6.667.648.148.508.788.969.19
90°6.517.618.138.568.959.299.80
110°6.627.838.458.909.249.5810.23
120°6.477.768.469.069.6210.0710.99
135°5.817.258.128.809.5010.3212.31
150°4.906.207.308.088.619.1810.89
Run VMG4.245.376.327.017.467.959.43
Gybe Angles143.0°146.0°149.3°151.4°149.2°147.1°143.7°

APH: 483.6

CDL: 11.434

GPH: 541.2

CertNo: US6432

BOAT
ClassJ 121DesignerJOHNSTONEBuilderCCFAge date06/2019Series date09/2017Offset fileJ121LK.offData fileUS6432
HULL
Length Overall12.190 mMaximum Beam3.754 mDraft2.353 mDisplacement6,097 kgDLR4.1412IMS DivisionCruiser/RacerDynamic Allowance0.080%Age Allowance0.195%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.440m
CREW
Maximum weight818 kgMinimum weight614 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail50.7751.69Headsail Luffed43.8343.83Headsail FlyingSymmetricAsymmetric172.66172.66 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail14.55Storm Jib14.22Heavy Weather Jib38.39
SAIL LIMITS
Headsails6  Spinnakers5
STABILITY
Righting Moment202.1 kg·mStability Index124.5
COMMENTS
Full crew, no water ballast
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  04560002NBMIssued on 31/05/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

International
Certificate
2023

Boat

DARK STORM

USA 61219

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 VMG894.9731.1657.4630.0616.4608.5603.2
52°587.9496.7462.4449.1442.1437.7433.0
60°558.4480.7450.9436.5428.8423.4417.3
75°540.2471.1442.0423.5410.2402.0391.8
90°552.9473.1442.8420.6402.1387.4367.4
110°543.9459.9425.8404.7389.5375.9351.9
120°556.5463.9425.7397.3374.2357.4327.4
135°620.1496.3443.3409.3378.8348.8292.4
150°735.1581.0492.9445.6417.9392.0330.7
Run VMG848.9670.8569.2513.5482.6452.6381.9
Selected Courses
Windward / Leeward871.9701.0613.3571.8549.5530.6492.6
All purpose673.0553.6498.1469.4451.0435.7408.4
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward595.51.0076
All purpose483.61.2406
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low613.20.9784
Triple Number Coastal/Long Distance Medium481.41.2464
Triple Number Coastal/Long Distance High429.31.3976
Triple Number Windward/Leeward Low786.50.7629
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High521.11.1515
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance525.21.1425
Triple Number Coastal/Long Distance Low613.20.9784
Triple Number Coastal/Long Distance Medium481.41.2464
Triple Number Coastal/Long Distance High429.31.3976
Triple Number Windward/Leeward Low786.50.7629
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High521.11.1515
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance869.6660.7556.8500.0467.9440.0391.3
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8858
Downwind "popa"1.0716
70% up, 30% down "Ilhabela"0.9344
30% up, 70% down "Ilhabela-inverso"1.0081
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low613.20.9784
Triple Number Coastal/Long Distance Medium481.41.2464
Triple Number Coastal/Long Distance High429.31.3976
Triple Number Windward/Leeward Low786.50.7629
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High521.11.1515
Predominantly Upwind523.81.1454
Predominantly Downwind487.21.2315
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low613.20.9784
Triple Number All Purpose Medium481.41.2464
Triple Number All Purpose High429.31.3976
Triple Number Windward/Leeward Low786.50.7629
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High521.11.1515
Predominantly Upwind523.81.1454
Predominantly Downwind487.21.2315
Predominantly Upwind Low682.70.8788
Predominantly Upwind Medium542.31.1063
Predominantly Upwind High508.91.1790
Predominantly Downwind Low667.00.8996
Predominantly Downwind Medium485.01.2371
Predominantly Downwind High400.31.4987
Chicago-Mac Upwind1.1260
Chicago-Mac All Purpose1.1641
Chicago-Mac Downwind1.2103
Bayview-Mac Cove Island1.0843
Bayview-Mac Shore1.0934
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching458.41.3088
Predominantly Reaching Low556.91.0773
Predominantly Reaching Medium455.01.3186
Predominantly Reaching High394.71.5202
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low858.70.6987
5-Band Low / Medium720.20.8331
5-Band Medium582.21.0305
5-Band Medium / High530.81.1304
5-Band High499.11.2021
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance525.21.1425
Triple Number Coastal/Long Distance Low613.20.9784
Triple Number Coastal/Long Distance Medium481.41.2464
Triple Number Coastal/Long Distance High429.31.3976
Triple Number Windward/Leeward Low786.50.7629
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High521.11.1515
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance869.6660.7556.8500.0467.9440.0391.3
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance525.21.1425
Triple Number Coastal/Long Distance Low613.20.9784
Triple Number Coastal/Long Distance Medium481.41.2464
Triple Number Coastal/Long Distance High429.31.3976
Triple Number Windward/Leeward Low786.50.7629
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High521.11.1515
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance869.6660.7556.8500.0467.9440.0391.3
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance525.2
Triple Number Coastal/Long Distance Low613.2
Triple Number Coastal/Long Distance Medium481.4
Triple Number Coastal/Long Distance High429.3
Triple Number Windward/Leeward Low786.5
Triple Number Windward/Leeward Medium590.8
Triple Number Windward/Leeward High521.1
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance869.6660.7556.8500.0467.9440.0391.3
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance525.21.1425
Triple Number Coastal/Long Distance Low613.20.9784
Triple Number Coastal/Long Distance Medium481.41.2464
Triple Number Coastal/Long Distance High429.31.3976
Triple Number Windward/Leeward Low786.50.7629
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High521.11.1515
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance869.6660.7556.8500.0467.9440.0391.3
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)525.21.1425
Triple Number Coastal/Long Distance Low613.20.9784
Triple Number Coastal/Long Distance Medium481.41.2464
Triple Number Coastal/Long Distance High429.31.3976
Triple Number Windward/Leeward Low786.50.7629
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High521.11.1515
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance869.6660.7556.8500.0467.9440.0391.3
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low613.20.9784
Triple Number Coastal/Long Distance Medium481.41.2464
Triple Number Coastal/Long Distance High429.31.3976
Triple Number Windward/Leeward Low786.50.7629
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High521.11.1515
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9784
Triple Number Coastal/Long Distance Medium1.2464
Triple Number Coastal/Long Distance High1.3976
Triple Number Windward/Leeward Low0.7629
Triple Number Windward/Leeward Medium1.0155
Triple Number Windward/Leeward High1.1515
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance869.6660.7556.8500.0467.9440.0391.3
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance525.21.1425
Triple Number Coastal/Long Distance Low613.20.9784
Triple Number Coastal/Long Distance Medium481.41.2464
Triple Number Coastal/Long Distance High429.31.3976
Triple Number Windward/Leeward Low786.50.7629
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High521.11.1515
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance869.6660.7556.8500.0467.9440.0391.3
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low613.20.9784
Triple Number Coastal/Long Distance Medium481.41.2464
Triple Number Coastal/Long Distance High429.31.3976
Triple Number Windward/Leeward Low786.50.7629
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High521.11.1515
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance525.21.1425
Triple Number Coastal/Long Distance Low613.20.9784
Triple Number Coastal/Long Distance Medium481.41.2464
Triple Number Coastal/Long Distance High429.31.3976
Triple Number Windward/Leeward Low786.50.7629
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High521.11.1515
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance869.6660.7556.8500.0467.9440.0391.3
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low786.50.7629
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High521.11.1515
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance869.6660.7556.8500.0467.9440.0391.3
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low613.2
Triple Number Coastal/Long Distance Medium481.4
Triple Number Coastal/Long Distance High429.3
Triple Number Windward/Leeward Low786.5
Triple Number Windward/Leeward Medium590.8
Triple Number Windward/Leeward High521.1
Predominantly Upwind523.8
Predominantly Downwind487.2
Predominantly Reaching468.1
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance525.21.1425
Triple Number Coastal/Long Distance Low613.20.9784
Triple Number Coastal/Long Distance Medium481.41.2464
Triple Number Coastal/Long Distance High429.31.3976
Triple Number Windward/Leeward Low786.50.7629
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High521.11.1515
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance869.6660.7556.8500.0467.9440.0391.3
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9784
Triple Number Coastal/Long Distance Medium1.2464
Triple Number Coastal/Long Distance High1.3976
Triple Number Windward/Leeward Low0.7629
Triple Number Windward/Leeward Medium1.0155
Triple Number Windward/Leeward High1.1515
Coastal/Long Distance1.1425
Predominantly Upwind1.1454
Predominantly Downwind1.2315
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.9784
Tretall Distanseseilas Mellomvind1.2464
Tretall Distanseseilas Mye vind1.3976
Tretall Pølsebane Lite vind0.7629
Tretall Pølsebane Mellomvind1.0155
Tretall Pølsebane Mye vind1.1515
Distanseseilas ett tall (OSN 8-16kn)1.1425
Distanseseilas ett tall (APH 6-20kn)1.2406
Enkeltall Motvind1.1454
Enkeltall Medvind1.2315
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low613.20.9784
Triple Number Coastal/Long Distance Medium481.41.2464
Triple Number Coastal/Long Distance High429.31.3976
Triple Number Windward/Leeward Low786.50.7629
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High521.11.1515
Coastal/Long Distance525.21.1425
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind523.81.1454
Predominantly Downwind487.21.2315
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore504.01.1906
Cape Doctor Coastal416.61.4402
Triple Number Coastal/Long Distance Low613.20.9784
Triple Number Coastal/Long Distance Medium481.41.2464
Triple Number Coastal/Long Distance High429.31.3976
Triple Number Windward/Leeward Low786.50.7629
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High521.11.1515
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9784
Triple Number Coastal/Long Distance Medium1.2464
Triple Number Coastal/Long Distance High1.3976
Triple Number Windward/Leeward Low0.7629
Triple Number Windward/Leeward Medium1.0155
Triple Number Windward/Leeward High1.1515
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9784
Triple Number Coastal/Long Distance Medium1.2464
Triple Number Coastal/Long Distance High1.3976
Triple Number Windward/Leeward Low0.7629
Triple Number Windward/Leeward Medium1.0155
Triple Number Windward/Leeward High1.1515
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance525.21.1425
Triple Number Coastal/Long Distance Low613.20.9784
Triple Number Coastal/Long Distance Medium481.41.2464
Triple Number Coastal/Long Distance High429.31.3976
Triple Number Windward/Leeward Low786.50.7629
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High521.11.1515
Predominantly Upwind523.81.1454
Predominantly Downwind487.21.2315
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance869.6660.7556.8500.0467.9440.0391.3
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance525.21.1425
Triple Number Coastal/Long Distance Low613.20.9784
Triple Number Coastal/Long Distance Medium481.41.2464
Triple Number Coastal/Long Distance High429.31.3976
Triple Number Windward/Leeward Low786.50.7629
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High521.11.1515
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance869.6660.7556.8500.0467.9440.0391.3
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low613.20.9784
Triple Number All Purpose Medium481.41.2464
Triple Number All Purpose High429.31.3976
Triple Number Windward/Leeward Low786.50.7629
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High521.11.1515
Predominantly Upwind523.81.1454
Predominantly Downwind487.21.2315
Predominantly Upwind Low682.70.8788
Predominantly Upwind Medium542.31.1063
Predominantly Upwind High508.91.1790
Predominantly Downwind Low667.00.8996
Predominantly Downwind Medium485.01.2371
Predominantly Downwind High400.31.4987
Chicago-Mac Upwind1.1260
Chicago-Mac All Purpose1.1641
Chicago-Mac Downwind1.2103
Bayview-Mac Cove Island1.0843
Bayview-Mac Shore1.0934
Harvest Moon Regatta417.91.4357
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy505.01.1882
San Francisco Bay Medium580.51.0337
Predominantly Reaching458.41.3088
Predominantly Reaching Low556.91.0773
Predominantly Reaching Medium455.01.3186
Predominantly Reaching High394.71.5202
Windward/Leeward 60-40 Low791.70.7578
Windward/Leeward 60-40 Medium609.00.9853
Windward/Leeward 60-40 High550.81.0893
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low858.70.6987
5-Band Low / Medium720.20.8331
5-Band Medium582.21.0305
5-Band Medium / High530.81.1304
5-Band High499.11.2021
ORC Ref  04560002NBMIssued on 31/05/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

International
Certificate
2023

Boat

DARK STORM

USA 61219

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ 121Measurement07/06/2020HINPlan reviewHull constructionCoredCarbon RudderNoLight stanchionsNoTrim tabNo
LOA12.190Max. Beam3.754Draft2.353Displacement6,097Wetted area30.76IMS L11.632LSM011.375Acc. length12.190Sink (kg/mm) 23.83
VCGD-0.283VCGM-0.230RM Rated (kg·m) 202.1Limit of positive stability(°) 123.8Stability Index124.5
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.440PBW0.115PIPA0.0035
EDL2.195ST10.040ST20.180
ST30.180ST40.110ST50.240
RIG
Forestay tensionAftInner stayNone FittedCarbon mastYesHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders2Rotating mastNo
P16.395IG16.794ISP18.141MDT10.125MDL10.235MDT20.097MDL20.171TL1.745MW0.226GO0.245
E5.070J4.660BAS1.651FSD0.038SFJ0.120SPLWPLTPS7.048BD0.290MWT190.50MCG5.800
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodBoom incliningFlotation Date07/06/2020MeasurerComment
SFFP1.000FFM1.324FF1.330LCFcl6.819SG1.0050
SAFP12.149FAM0.916FA0.921LCFsh7.090HBI1.173
W1144.7W2144.7W3144.7W4144.7LCFD7.347
PD1277.3PD2276.5PD3262.2PD4266.8
WD4.750PLM9000.00GSA1.0RSA1.0RM200.1
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
TANKSIdDescriptionSp.WghtCapacityConditionLCGVCG2Water PVC Port side10004.900.001Fuel PVC centerline0.900010058.200.10Total deductible58.200.10
OTHER ITEMSIdKindDescriptionWeightLCGVCG2BatteryEngine 12V battery, stbd side206.000.001BatteryHouse 12V batteries, stbd side505.500.001EngineYanmar 3YM30 29 hpTotal deductible0
ORC Ref  04560002NBMIssued on 31/05/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

International
Certificate
2023

Boat

DARK STORM

USA 61219

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentMain0.291.192.023.384.2950.7731/05/2023OUS152023-001 remeasure
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentLt/Md #10.150.811.462.683.844.9016.80YesNo 43.8310/04/2023
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentA2-220.3217.1018.7111.0711.09100%172.6610/04/2023
ORC Ref  04560002NBMIssued on 31/05/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org