International
Certificate
Double Handed
2023

Boat

STRIKING BACK

USA 106

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 Angles42.7°40.6°39.6°39.6°39.6°40.0°40.6°
Beat VMG3.934.584.834.954.994.994.94
52°5.956.787.067.197.267.287.24
60°6.267.067.327.457.527.567.50
75°6.477.277.607.777.897.978.04
90°6.747.417.708.018.238.398.60
110°6.617.518.008.388.698.989.42
120°6.307.397.938.458.939.4010.20
135°5.677.037.798.429.089.7710.88
150°4.796.077.107.808.358.9710.80
Run VMG4.155.256.156.767.237.779.35
Gybe Angles143.3°146.0°150.1°151.2°148.7°146.6°144.9°

APH: 524.2

CDL: 9.252

GPH: 579.1

CertNo: US6547

BOAT
ClassJ 111DesignerJohnstoneBuilderJ CompositesAge date01/2014Series date01/2010Offset fileJ111.OFFData fileUS6547 DH
HULL
Length Overall11.121 mMaximum Beam3.302 mDraft2.185 mDisplacement4,219 kgDLR4.2866IMS DivisionPerformanceDynamic Allowance0.000%Age Allowance0.422%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.408m
CREW
Maximum weight170 kgMinimum weight120 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail38.1338.99Headsail Luffed33.7033.70Headsail FlyingSymmetricAsymmetric129.63129.63 (1 asymmetric(s) with SHW/SFL < 85%)
STORM SAIL AREAS (m²)
Trysail10.65Storm Jib10.84Heavy Weather Jib29.26
SAIL LIMITS
Headsails5  Spinnakers4
STABILITY
Righting Moment100.0 kg·mStability Index123.7
COMMENTS
Cushions on all but v-berths Folding salon table
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  04560002PDVIssued on 29/06/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

International
Certificate
Double Handed
2023

Boat

STRIKING BACK

USA 106

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 VMG916.6785.7744.8727.9721.2721.1728.9
52°605.0531.3510.1500.8496.2494.2497.3
60°575.5510.1491.7483.3478.9476.4480.1
75°556.7494.9473.4463.2456.4451.9447.5
90°534.1486.0467.4449.7437.3429.0418.7
110°544.9479.3450.1429.5414.3401.0382.3
120°571.8487.3453.7426.0402.9383.1353.1
135°635.2512.1462.0427.6396.3368.4330.9
150°751.5593.4507.1461.6431.1401.2333.4
Run VMG867.8685.2585.4532.3497.8463.3385.0
Selected Courses
Windward / Leeward892.2735.4665.1630.1609.5592.2556.9
All purpose685.2580.4536.9512.7496.5483.4462.0
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward649.20.9243
All purpose524.21.1445
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low632.80.9481
Triple Number Coastal/Long Distance Medium522.41.1486
Triple Number Coastal/Long Distance High478.71.2535
Triple Number Windward/Leeward Low813.80.7373
Triple Number Windward/Leeward Medium645.40.9297
Triple Number Windward/Leeward High583.31.0286
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance569.21.0541
Triple Number Coastal/Long Distance Low632.80.9481
Triple Number Coastal/Long Distance Medium522.41.1486
Triple Number Coastal/Long Distance High478.71.2535
Triple Number Windward/Leeward Low813.80.7373
Triple Number Windward/Leeward Medium645.40.9297
Triple Number Windward/Leeward High583.31.0286
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance889.8692.2602.0548.8516.2487.0436.8
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7856
Downwind "popa"1.0456
70% up, 30% down "Ilhabela"0.8489
30% up, 70% down "Ilhabela-inverso"0.9512
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low632.80.9481
Triple Number Coastal/Long Distance Medium522.41.1486
Triple Number Coastal/Long Distance High478.71.2535
Triple Number Windward/Leeward Low813.80.7373
Triple Number Windward/Leeward Medium645.40.9297
Triple Number Windward/Leeward High583.31.0286
Predominantly Upwind575.31.0429
Predominantly Downwind514.01.1673
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low632.80.9481
Triple Number All Purpose Medium522.41.1486
Triple Number All Purpose High478.71.2535
Triple Number Windward/Leeward Low813.80.7373
Triple Number Windward/Leeward Medium645.40.9297
Triple Number Windward/Leeward High583.31.0286
Predominantly Upwind575.31.0429
Predominantly Downwind514.01.1673
Predominantly Upwind Low709.60.8455
Predominantly Upwind Medium607.20.9882
Predominantly Upwind High590.41.0163
Predominantly Downwind Low684.30.8768
Predominantly Downwind Medium507.01.1835
Predominantly Downwind High424.41.4138
Chicago-Mac Upwind1.0247
Chicago-Mac All Purpose1.0811
Chicago-Mac Downwind1.1470
Bayview-Mac Cove Island1.0247
Bayview-Mac Shore1.0239
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching490.61.2231
Predominantly Reaching Low570.01.0526
Predominantly Reaching Medium485.01.2371
Predominantly Reaching High435.91.3765
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low880.20.6817
5-Band Low / Medium756.00.7937
5-Band Medium638.10.9404
5-Band Medium / High592.31.0129
5-Band High563.01.0657
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance569.21.0541
Triple Number Coastal/Long Distance Low632.80.9481
Triple Number Coastal/Long Distance Medium522.41.1486
Triple Number Coastal/Long Distance High478.71.2535
Triple Number Windward/Leeward Low813.80.7373
Triple Number Windward/Leeward Medium645.40.9297
Triple Number Windward/Leeward High583.31.0286
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance889.8692.2602.0548.8516.2487.0436.8
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance569.21.0541
Triple Number Coastal/Long Distance Low632.80.9481
Triple Number Coastal/Long Distance Medium522.41.1486
Triple Number Coastal/Long Distance High478.71.2535
Triple Number Windward/Leeward Low813.80.7373
Triple Number Windward/Leeward Medium645.40.9297
Triple Number Windward/Leeward High583.31.0286
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance889.8692.2602.0548.8516.2487.0436.8
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance569.2
Triple Number Coastal/Long Distance Low632.8
Triple Number Coastal/Long Distance Medium522.4
Triple Number Coastal/Long Distance High478.7
Triple Number Windward/Leeward Low813.8
Triple Number Windward/Leeward Medium645.4
Triple Number Windward/Leeward High583.3
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance889.8692.2602.0548.8516.2487.0436.8
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance569.21.0541
Triple Number Coastal/Long Distance Low632.80.9481
Triple Number Coastal/Long Distance Medium522.41.1486
Triple Number Coastal/Long Distance High478.71.2535
Triple Number Windward/Leeward Low813.80.7373
Triple Number Windward/Leeward Medium645.40.9297
Triple Number Windward/Leeward High583.31.0286
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance889.8692.2602.0548.8516.2487.0436.8
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)569.21.0541
Triple Number Coastal/Long Distance Low632.80.9481
Triple Number Coastal/Long Distance Medium522.41.1486
Triple Number Coastal/Long Distance High478.71.2535
Triple Number Windward/Leeward Low813.80.7373
Triple Number Windward/Leeward Medium645.40.9297
Triple Number Windward/Leeward High583.31.0286
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance889.8692.2602.0548.8516.2487.0436.8
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low632.80.9481
Triple Number Coastal/Long Distance Medium522.41.1486
Triple Number Coastal/Long Distance High478.71.2535
Triple Number Windward/Leeward Low813.80.7373
Triple Number Windward/Leeward Medium645.40.9297
Triple Number Windward/Leeward High583.31.0286
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9481
Triple Number Coastal/Long Distance Medium1.1486
Triple Number Coastal/Long Distance High1.2535
Triple Number Windward/Leeward Low0.7373
Triple Number Windward/Leeward Medium0.9297
Triple Number Windward/Leeward High1.0286
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance889.8692.2602.0548.8516.2487.0436.8
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance569.21.0541
Triple Number Coastal/Long Distance Low632.80.9481
Triple Number Coastal/Long Distance Medium522.41.1486
Triple Number Coastal/Long Distance High478.71.2535
Triple Number Windward/Leeward Low813.80.7373
Triple Number Windward/Leeward Medium645.40.9297
Triple Number Windward/Leeward High583.31.0286
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance889.8692.2602.0548.8516.2487.0436.8
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low632.80.9481
Triple Number Coastal/Long Distance Medium522.41.1486
Triple Number Coastal/Long Distance High478.71.2535
Triple Number Windward/Leeward Low813.80.7373
Triple Number Windward/Leeward Medium645.40.9297
Triple Number Windward/Leeward High583.31.0286
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance569.21.0541
Triple Number Coastal/Long Distance Low632.80.9481
Triple Number Coastal/Long Distance Medium522.41.1486
Triple Number Coastal/Long Distance High478.71.2535
Triple Number Windward/Leeward Low813.80.7373
Triple Number Windward/Leeward Medium645.40.9297
Triple Number Windward/Leeward High583.31.0286
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance889.8692.2602.0548.8516.2487.0436.8
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low813.80.7373
Triple Number Windward/Leeward Medium645.40.9297
Triple Number Windward/Leeward High583.31.0286
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance889.8692.2602.0548.8516.2487.0436.8
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low632.8
Triple Number Coastal/Long Distance Medium522.4
Triple Number Coastal/Long Distance High478.7
Triple Number Windward/Leeward Low813.8
Triple Number Windward/Leeward Medium645.4
Triple Number Windward/Leeward High583.3
Predominantly Upwind575.3
Predominantly Downwind514.0
Predominantly Reaching497.3
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance569.21.0541
Triple Number Coastal/Long Distance Low632.80.9481
Triple Number Coastal/Long Distance Medium522.41.1486
Triple Number Coastal/Long Distance High478.71.2535
Triple Number Windward/Leeward Low813.80.7373
Triple Number Windward/Leeward Medium645.40.9297
Triple Number Windward/Leeward High583.31.0286
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance889.8692.2602.0548.8516.2487.0436.8
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9481
Triple Number Coastal/Long Distance Medium1.1486
Triple Number Coastal/Long Distance High1.2535
Triple Number Windward/Leeward Low0.7373
Triple Number Windward/Leeward Medium0.9297
Triple Number Windward/Leeward High1.0286
Coastal/Long Distance1.0541
Predominantly Upwind1.0429
Predominantly Downwind1.1673
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.9481
Tretall Distanseseilas Mellomvind1.1486
Tretall Distanseseilas Mye vind1.2535
Tretall Pølsebane Lite vind0.7373
Tretall Pølsebane Mellomvind0.9297
Tretall Pølsebane Mye vind1.0286
Distanseseilas ett tall (OSN 8-16kn)1.0541
Distanseseilas ett tall (APH 6-20kn)1.1445
Enkeltall Motvind1.0429
Enkeltall Medvind1.1673
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low632.80.9481
Triple Number Coastal/Long Distance Medium522.41.1486
Triple Number Coastal/Long Distance High478.71.2535
Triple Number Windward/Leeward Low813.80.7373
Triple Number Windward/Leeward Medium645.40.9297
Triple Number Windward/Leeward High583.31.0286
Coastal/Long Distance569.21.0541
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind575.31.0429
Predominantly Downwind514.01.1673
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore567.51.0572
Cape Doctor Coastal468.41.2809
Triple Number Coastal/Long Distance Low632.80.9481
Triple Number Coastal/Long Distance Medium522.41.1486
Triple Number Coastal/Long Distance High478.71.2535
Triple Number Windward/Leeward Low813.80.7373
Triple Number Windward/Leeward Medium645.40.9297
Triple Number Windward/Leeward High583.31.0286
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9481
Triple Number Coastal/Long Distance Medium1.1486
Triple Number Coastal/Long Distance High1.2535
Triple Number Windward/Leeward Low0.7373
Triple Number Windward/Leeward Medium0.9297
Triple Number Windward/Leeward High1.0286
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9481
Triple Number Coastal/Long Distance Medium1.1486
Triple Number Coastal/Long Distance High1.2535
Triple Number Windward/Leeward Low0.7373
Triple Number Windward/Leeward Medium0.9297
Triple Number Windward/Leeward High1.0286
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance569.21.0541
Triple Number Coastal/Long Distance Low632.80.9481
Triple Number Coastal/Long Distance Medium522.41.1486
Triple Number Coastal/Long Distance High478.71.2535
Triple Number Windward/Leeward Low813.80.7373
Triple Number Windward/Leeward Medium645.40.9297
Triple Number Windward/Leeward High583.31.0286
Predominantly Upwind575.31.0429
Predominantly Downwind514.01.1673
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance889.8692.2602.0548.8516.2487.0436.8
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance569.21.0541
Triple Number Coastal/Long Distance Low632.80.9481
Triple Number Coastal/Long Distance Medium522.41.1486
Triple Number Coastal/Long Distance High478.71.2535
Triple Number Windward/Leeward Low813.80.7373
Triple Number Windward/Leeward Medium645.40.9297
Triple Number Windward/Leeward High583.31.0286
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance889.8692.2602.0548.8516.2487.0436.8
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low632.80.9481
Triple Number All Purpose Medium522.41.1486
Triple Number All Purpose High478.71.2535
Triple Number Windward/Leeward Low813.80.7373
Triple Number Windward/Leeward Medium645.40.9297
Triple Number Windward/Leeward High583.31.0286
Predominantly Upwind575.31.0429
Predominantly Downwind514.01.1673
Predominantly Upwind Low709.60.8455
Predominantly Upwind Medium607.20.9882
Predominantly Upwind High590.41.0163
Predominantly Downwind Low684.30.8768
Predominantly Downwind Medium507.01.1835
Predominantly Downwind High424.41.4138
Chicago-Mac Upwind1.0247
Chicago-Mac All Purpose1.0811
Chicago-Mac Downwind1.1470
Bayview-Mac Cove Island1.0247
Bayview-Mac Shore1.0239
Harvest Moon Regatta447.71.3401
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy569.11.0543
San Francisco Bay Medium632.90.9480
Predominantly Reaching490.61.2231
Predominantly Reaching Low570.01.0526
Predominantly Reaching Medium485.01.2371
Predominantly Reaching High435.91.3765
Windward/Leeward 60-40 Low821.30.7306
Windward/Leeward 60-40 Medium676.40.8870
Windward/Leeward 60-40 High631.20.9506
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low880.20.6817
5-Band Low / Medium756.00.7937
5-Band Medium638.10.9404
5-Band Medium / High592.31.0129
5-Band High563.01.0657
ORC Ref  04560002PDVIssued on 29/06/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

International
Certificate
Double Handed
2023

Boat

STRIKING BACK

USA 106

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ 111Measurement09/10/2020HINPlan reviewHull constructionCoredCarbon RudderYesLight stanchionsNoTrim tabNo
LOA11.121Max. Beam3.302Draft2.185Displacement4,219Wetted area23.46IMS L10.086LSM09.946Acc. length10.732Sink (kg/mm) 18.08
VCGD-0.013VCGM-0.023RM Rated (kg·m) 100.0Limit of positive stability(°) 124.1Stability Index123.7
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.408PBW0.125PIPA0.0034
EDL2.253ST10.040ST20.180
ST30.180ST40.113ST50.305
RIG
Forestay tensionAftInner stayNone FittedCarbon mastYesHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders2Rotating mastNo
P13.767IG14.641ISP15.683MDT10.110MDL10.175MDT20.095MDL20.134TL1.050MW0.175GO0.198
E4.418J4.230BAS1.711FSD0.035SFJ0.303SPL0.000WPLTPS6.525BD0.170MWT106.00MCG5.080
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodBoom incliningFlotation Date09/10/2020MeasurerComment
SFFP0.994FFM1.247FF1.250LCFcl6.054SG1.0100
SAFP10.966FAM0.892FA0.898LCFsh6.271HBI1.069
W188.7W288.7W388.7W488.7LCFD6.192
PD1291.9PD2292.6PD3292.7PD4294.9
WD4.140PLM9000.00GSA1.0RSA1.0RM98.7
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
TANKSIdDescriptionSp.WghtCapacityConditionLCGVCG3Fuel PVC Aft centerlineFuel50208.470.302Water Bladder Port settee10005.500.201Waste PVC Port side head5003.430.65Total deductible178.470.30
OTHER ITEMSIdKindDescriptionWeightLCGVCG2Battery12V engine battery stbd settee205.530.201Battery12V house battery stbd settee255.310.201EngineVolvo D1-20 18 hpTotal deductible0
ORC Ref  04560002PDVIssued on 29/06/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

International
Certificate
Double Handed
2023

Boat

STRIKING BACK

USA 106

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentMain 20200.201.061.883.083.8038.1304/06/2020OUK4010699-001
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentJ1-3-200.070.681.292.403.444.4314.45YesNo 33.7012/10/2020OUS139275-002J1-200.100.671.262.343.384.3814.31YesNo 32.8004/06/2020OUK4006746-002
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentA2-2018RM18.0514.8116.439.579.06106%129.6322/05/2023OUK4011276 remeasureC0-2316.1314.6815.416.218.2575%84.9622/05/2023OUS153259
ORC Ref  04560002PDVIssued on 29/06/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org