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°38.4°37.5°37.0°37.0°37.0°
Beat VMG4.044.945.495.725.845.925.96
52°6.157.277.808.028.148.228.31
60°6.487.518.008.258.408.508.62
75°6.697.668.168.518.788.969.19
90°6.547.618.158.588.979.319.80
110°6.637.848.468.909.249.5810.23
120°6.487.778.469.079.6210.0710.99
135°5.827.278.138.809.5210.3312.32
150°4.916.217.318.098.629.2010.91
Run VMG4.255.386.337.027.477.979.45
Gybe Angles143.0°146.0°149.2°151.4°149.2°147.1°143.7°

APH: 483.1

CDL: 11.439

GPH: 540.3

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 Allowance0.060%Age Allowance0.195%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.440m
CREW
Maximum weight818 kgMinimum weight614 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail51.7352.74Headsail 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 Index124.4
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  03330002J8QIssued on 24/04/2023Valid until 31/12/2023
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 VMG890.2728.0656.3629.7616.4608.6603.5
52°585.0495.1461.8449.0442.1437.7433.1
60°555.9479.3450.3436.4428.8423.5417.4
75°537.8469.9441.3423.0410.0401.9391.9
90°550.2472.8441.9419.7401.4386.9367.4
110°542.9459.5425.6404.7389.5375.9351.9
120°555.6463.4425.4397.0374.1357.4327.4
135°618.9495.5442.9408.9378.3348.4292.1
150°733.7580.0492.3445.1417.4391.4330.0
Run VMG847.2669.7568.5513.0482.0451.9381.0
Selected Courses
Windward / Leeward868.7698.9612.4571.3549.2530.3492.3
All purpose670.5552.2497.4469.0450.7435.5408.3
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward594.71.0089
All purpose483.11.2421
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low611.40.9814
Triple Number Coastal/Long Distance Medium480.81.2478
Triple Number Coastal/Long Distance High429.11.3982
Triple Number Windward/Leeward Low783.80.7655
Triple Number Windward/Leeward Medium590.11.0168
Triple Number Windward/Leeward High520.71.1522
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance524.51.1440
Triple Number Coastal/Long Distance Low611.40.9814
Triple Number Coastal/Long Distance Medium480.81.2478
Triple Number Coastal/Long Distance High429.11.3982
Triple Number Windward/Leeward Low783.80.7655
Triple Number Windward/Leeward Medium590.11.0168
Triple Number Windward/Leeward High520.71.1522
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance866.5658.9556.0499.6467.7439.8391.1
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8874
Downwind "popa"1.0733
70% up, 30% down "Ilhabela"0.9361
30% up, 70% down "Ilhabela-inverso"1.0098
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low611.40.9814
Triple Number Coastal/Long Distance Medium480.81.2478
Triple Number Coastal/Long Distance High429.11.3982
Triple Number Windward/Leeward Low783.80.7655
Triple Number Windward/Leeward Medium590.11.0168
Triple Number Windward/Leeward High520.71.1522
Predominantly Upwind523.11.1470
Predominantly Downwind486.51.2332
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low611.40.9814
Triple Number All Purpose Medium480.81.2478
Triple Number All Purpose High429.11.3982
Triple Number Windward/Leeward Low783.80.7655
Triple Number Windward/Leeward Medium590.11.0168
Triple Number Windward/Leeward High520.71.1522
Predominantly Upwind523.11.1470
Predominantly Downwind486.51.2332
Predominantly Upwind Low680.00.8823
Predominantly Upwind Medium541.71.1076
Predominantly Upwind High508.91.1791
Predominantly Downwind Low665.30.9018
Predominantly Downwind Medium484.41.2386
Predominantly Downwind High399.81.5006
Chicago-Mac Upwind1.1277
Chicago-Mac All Purpose1.1659
Chicago-Mac Downwind1.2120
Bayview-Mac Cove Island1.0867
Bayview-Mac Shore1.0959
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching457.81.3105
Predominantly Reaching Low555.41.0803
Predominantly Reaching Medium454.41.3203
Predominantly Reaching High394.41.5214
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low855.60.7013
5-Band Low / Medium718.10.8355
5-Band Medium581.61.0316
5-Band Medium / High530.51.1310
5-Band High498.91.2028
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance524.51.1440
Triple Number Coastal/Long Distance Low611.40.9814
Triple Number Coastal/Long Distance Medium480.81.2478
Triple Number Coastal/Long Distance High429.11.3982
Triple Number Windward/Leeward Low783.80.7655
Triple Number Windward/Leeward Medium590.11.0168
Triple Number Windward/Leeward High520.71.1522
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance866.5658.9556.0499.6467.7439.8391.1
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance524.51.1440
Triple Number Coastal/Long Distance Low611.40.9814
Triple Number Coastal/Long Distance Medium480.81.2478
Triple Number Coastal/Long Distance High429.11.3982
Triple Number Windward/Leeward Low783.80.7655
Triple Number Windward/Leeward Medium590.11.0168
Triple Number Windward/Leeward High520.71.1522
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance866.5658.9556.0499.6467.7439.8391.1
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance524.5
Triple Number Coastal/Long Distance Low611.4
Triple Number Coastal/Long Distance Medium480.8
Triple Number Coastal/Long Distance High429.1
Triple Number Windward/Leeward Low783.8
Triple Number Windward/Leeward Medium590.1
Triple Number Windward/Leeward High520.7
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance866.5658.9556.0499.6467.7439.8391.1
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance524.51.1440
Triple Number Coastal/Long Distance Low611.40.9814
Triple Number Coastal/Long Distance Medium480.81.2478
Triple Number Coastal/Long Distance High429.11.3982
Triple Number Windward/Leeward Low783.80.7655
Triple Number Windward/Leeward Medium590.11.0168
Triple Number Windward/Leeward High520.71.1522
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance866.5658.9556.0499.6467.7439.8391.1
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)524.51.1440
Triple Number Coastal/Long Distance Low611.40.9814
Triple Number Coastal/Long Distance Medium480.81.2478
Triple Number Coastal/Long Distance High429.11.3982
Triple Number Windward/Leeward Low783.80.7655
Triple Number Windward/Leeward Medium590.11.0168
Triple Number Windward/Leeward High520.71.1522
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance866.5658.9556.0499.6467.7439.8391.1
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low611.40.9814
Triple Number Coastal/Long Distance Medium480.81.2478
Triple Number Coastal/Long Distance High429.11.3982
Triple Number Windward/Leeward Low783.80.7655
Triple Number Windward/Leeward Medium590.11.0168
Triple Number Windward/Leeward High520.71.1522
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9814
Triple Number Coastal/Long Distance Medium1.2478
Triple Number Coastal/Long Distance High1.3982
Triple Number Windward/Leeward Low0.7655
Triple Number Windward/Leeward Medium1.0168
Triple Number Windward/Leeward High1.1522
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance866.5658.9556.0499.6467.7439.8391.1
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance524.51.1440
Triple Number Coastal/Long Distance Low611.40.9814
Triple Number Coastal/Long Distance Medium480.81.2478
Triple Number Coastal/Long Distance High429.11.3982
Triple Number Windward/Leeward Low783.80.7655
Triple Number Windward/Leeward Medium590.11.0168
Triple Number Windward/Leeward High520.71.1522
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance866.5658.9556.0499.6467.7439.8391.1
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low611.40.9814
Triple Number Coastal/Long Distance Medium480.81.2478
Triple Number Coastal/Long Distance High429.11.3982
Triple Number Windward/Leeward Low783.80.7655
Triple Number Windward/Leeward Medium590.11.0168
Triple Number Windward/Leeward High520.71.1522
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance524.51.1440
Triple Number Coastal/Long Distance Low611.40.9814
Triple Number Coastal/Long Distance Medium480.81.2478
Triple Number Coastal/Long Distance High429.11.3982
Triple Number Windward/Leeward Low783.80.7655
Triple Number Windward/Leeward Medium590.11.0168
Triple Number Windward/Leeward High520.71.1522
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance866.5658.9556.0499.6467.7439.8391.1
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low783.80.7655
Triple Number Windward/Leeward Medium590.11.0168
Triple Number Windward/Leeward High520.71.1522
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance866.5658.9556.0499.6467.7439.8391.1
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low611.4
Triple Number Coastal/Long Distance Medium480.8
Triple Number Coastal/Long Distance High429.1
Triple Number Windward/Leeward Low783.8
Triple Number Windward/Leeward Medium590.1
Triple Number Windward/Leeward High520.7
Predominantly Upwind523.1
Predominantly Downwind486.5
Predominantly Reaching467.4
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance524.51.1440
Triple Number Coastal/Long Distance Low611.40.9814
Triple Number Coastal/Long Distance Medium480.81.2478
Triple Number Coastal/Long Distance High429.11.3982
Triple Number Windward/Leeward Low783.80.7655
Triple Number Windward/Leeward Medium590.11.0168
Triple Number Windward/Leeward High520.71.1522
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance866.5658.9556.0499.6467.7439.8391.1
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9814
Triple Number Coastal/Long Distance Medium1.2478
Triple Number Coastal/Long Distance High1.3982
Triple Number Windward/Leeward Low0.7655
Triple Number Windward/Leeward Medium1.0168
Triple Number Windward/Leeward High1.1522
Coastal/Long Distance1.1440
Predominantly Upwind1.1470
Predominantly Downwind1.2332
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.9814
Tretall Distanseseilas Mellomvind1.2478
Tretall Distanseseilas Mye vind1.3982
Tretall Pølsebane Lite vind0.7655
Tretall Pølsebane Mellomvind1.0168
Tretall Pølsebane Mye vind1.1522
Distanseseilas ett tall (OSN 8-16kn)1.1440
Distanseseilas ett tall (APH 6-20kn)1.2421
Enkeltall Motvind1.1470
Enkeltall Medvind1.2332
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low611.40.9814
Triple Number Coastal/Long Distance Medium480.81.2478
Triple Number Coastal/Long Distance High429.11.3982
Triple Number Windward/Leeward Low783.80.7655
Triple Number Windward/Leeward Medium590.11.0168
Triple Number Windward/Leeward High520.71.1522
Coastal/Long Distance524.51.1440
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind523.11.1470
Predominantly Downwind486.51.2332
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore503.71.1912
Cape Doctor Coastal416.51.4407
Triple Number Coastal/Long Distance Low611.40.9814
Triple Number Coastal/Long Distance Medium480.81.2478
Triple Number Coastal/Long Distance High429.11.3982
Triple Number Windward/Leeward Low783.80.7655
Triple Number Windward/Leeward Medium590.11.0168
Triple Number Windward/Leeward High520.71.1522
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9814
Triple Number Coastal/Long Distance Medium1.2478
Triple Number Coastal/Long Distance High1.3982
Triple Number Windward/Leeward Low0.7655
Triple Number Windward/Leeward Medium1.0168
Triple Number Windward/Leeward High1.1522
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9814
Triple Number Coastal/Long Distance Medium1.2478
Triple Number Coastal/Long Distance High1.3982
Triple Number Windward/Leeward Low0.7655
Triple Number Windward/Leeward Medium1.0168
Triple Number Windward/Leeward High1.1522
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance524.51.1440
Triple Number Coastal/Long Distance Low611.40.9814
Triple Number Coastal/Long Distance Medium480.81.2478
Triple Number Coastal/Long Distance High429.11.3982
Triple Number Windward/Leeward Low783.80.7655
Triple Number Windward/Leeward Medium590.11.0168
Triple Number Windward/Leeward High520.71.1522
Predominantly Upwind523.11.1470
Predominantly Downwind486.51.2332
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance866.5658.9556.0499.6467.7439.8391.1
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance524.51.1440
Triple Number Coastal/Long Distance Low611.40.9814
Triple Number Coastal/Long Distance Medium480.81.2478
Triple Number Coastal/Long Distance High429.11.3982
Triple Number Windward/Leeward Low783.80.7655
Triple Number Windward/Leeward Medium590.11.0168
Triple Number Windward/Leeward High520.71.1522
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance866.5658.9556.0499.6467.7439.8391.1
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low611.40.9814
Triple Number All Purpose Medium480.81.2478
Triple Number All Purpose High429.11.3982
Triple Number Windward/Leeward Low783.80.7655
Triple Number Windward/Leeward Medium590.11.0168
Triple Number Windward/Leeward High520.71.1522
Predominantly Upwind523.11.1470
Predominantly Downwind486.51.2332
Predominantly Upwind Low680.00.8823
Predominantly Upwind Medium541.71.1076
Predominantly Upwind High508.91.1791
Predominantly Downwind Low665.30.9018
Predominantly Downwind Medium484.41.2386
Predominantly Downwind High399.81.5006
Chicago-Mac Upwind1.1277
Chicago-Mac All Purpose1.1659
Chicago-Mac Downwind1.2120
Bayview-Mac Cove Island1.0867
Bayview-Mac Shore1.0959
Harvest Moon Regatta417.41.4374
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy504.71.1888
San Francisco Bay Medium579.61.0352
Predominantly Reaching457.81.3105
Predominantly Reaching Low555.41.0803
Predominantly Reaching Medium454.41.3203
Predominantly Reaching High394.41.5214
Windward/Leeward 60-40 Low788.80.7606
Windward/Leeward 60-40 Medium608.30.9864
Windward/Leeward 60-40 High550.71.0896
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low855.60.7013
5-Band Low / Medium718.10.8355
5-Band Medium581.61.0316
5-Band Medium / High530.51.1310
5-Band High498.91.2028
ORC Ref  03330002J8QIssued on 24/04/2023Valid until 31/12/2023
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 Index124.4
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  03330002J8QIssued on 24/04/2023Valid until 31/12/2023
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.DateCommentMain0.311.242.093.454.3751.7310/04/2023OUS152023-001
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  03330002J8QIssued on 24/04/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org