Club
Certificate
2022

Boat

FEATHER

USA 23

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°41.8°40.8°39.3°38.7°38.4°38.4°
Beat VMG3.294.054.644.915.025.065.17
52°5.066.106.767.007.097.137.24
60°5.376.406.957.197.307.367.46
75°5.596.617.087.387.627.787.92
90°5.756.827.157.437.788.128.58
110°5.876.987.487.848.168.459.00
120°5.726.907.468.028.528.919.68
135°5.116.427.197.728.369.1210.89
150°4.335.486.507.147.517.929.51
Run VMG3.754.755.636.196.506.968.24
Gybe Angles143.8°146.9°148.7°151.0°148.4°174.8°141.9°

APH: 556.9

CDL: 8.822

GPH: 625.1

CertNo: USA23

BOAT
ClassJ 100DesignerJohnstoneBuilderJ BoatsAge date05/2005Series date01/2005Offset fileJ100_Feather.offData fileUSA23J100
HULL
Length Overall10.050 mMaximum Beam2.810 mDraft1.757 mDisplacement3,136 kgDLR4.0644IMS DivisionPerformanceDynamic Allowance0.000%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.405m
CREW
Maximum weight500 kgMinimum weight375 kg * when appliedNon Manual PowerNoCrew Arm Extension0.00 m
SAIL AREAS (m²)
MeasuredRatedMainsail28.2728.85Headsail Luffed21.5621.56Headsail FlyingSymmetricAsymmetric87.4887.48 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail8.35Storm Jib6.89Heavy Weather Jib18.60
SAIL LIMITS
Headsails5  Spinnakers4
STABILITY
Righting Moment60.8 kg·mStability IndexN/A
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  045600028BKIssued on 17/08/2022Valid until 31/12/2022
VPP ver: 2022 1.04 | © ORC | www.orc.org

Club
Certificate
2022

Boat

FEATHER

USA 23

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 VMG1095.4889.2776.1732.7717.3711.0696.3
52°711.2590.4532.6514.2507.8504.7496.9
60°670.3562.8518.3500.9493.3489.2482.4
75°644.0544.7508.2487.5472.3462.8454.5
90°625.9527.6503.8484.3462.7443.3419.8
110°613.1515.8481.1458.9441.4426.1399.8
120°629.2521.8482.4448.7422.7404.0371.9
135°704.2560.9501.0466.4430.4394.9330.5
150°831.6656.6553.4504.4479.4454.5378.5
Run VMG960.2758.2639.0581.9553.6517.3437.1
Selected Courses
Windward / Leeward1027.8823.7707.6657.3635.4614.2566.7
All purpose788.1642.7571.7538.3518.6502.2468.8
Single Number Scoring Options
CourseTime On DistanceTime On Time
Windward / Leeward689.30.8704
All purpose556.91.0774
 
Custom scoring options for Australia
Single NumberTime On DistanceTime On Time
Triple Number Coastal/Long Distance Low715.40.8387
Triple Number Coastal/Long Distance Medium553.21.0846
Triple Number Coastal/Long Distance High493.81.2151
Triple Number Windward/Leeward Low925.80.6481
Triple Number Windward/Leeward Medium682.40.8792
Triple Number Windward/Leeward High601.70.9972
Custom scoring options for Austria
Single NumberTime On DistanceTime On Time
Coastal/Long Distance606.70.9889
Triple Number Coastal/Long Distance Low715.40.8387
Triple Number Coastal/Long Distance Medium553.21.0846
Triple Number Coastal/Long Distance High493.81.2151
Triple Number Windward/Leeward Low925.80.6481
Triple Number Windward/Leeward Medium682.40.8792
Triple Number Windward/Leeward High601.70.9972
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1021.1772.4640.6573.6538.6507.3448.7
Custom scoring options for Brazil
Single NumberTime On Time
Upwind "bolina"0.7476
Downwind "popa"0.9444
70% up, 30% down "Ilhabela"0.7974
30% up, 70% down "Ilhabela-inverso"0.8753
Custom scoring options for Bulgaria
Single NumberTime On DistanceTime On Time
Triple Number Coastal/Long Distance Low715.40.8387
Triple Number Coastal/Long Distance Medium553.21.0846
Triple Number Coastal/Long Distance High493.81.2151
Triple Number Windward/Leeward Low925.80.6481
Triple Number Windward/Leeward Medium682.40.8792
Triple Number Windward/Leeward High601.70.9972
Predominantly Upwind608.60.9858
Predominantly Downwind557.01.0772
Custom scoring options for Canada
Single NumberTime On DistanceTime On Time
Triple Number All Purpose Low715.40.8387
Triple Number All Purpose Medium553.21.0846
Triple Number All Purpose High493.81.2151
Triple Number Windward/Leeward Low925.80.6481
Triple Number Windward/Leeward Medium682.40.8792
Triple Number Windward/Leeward High601.70.9972
Predominantly Upwind608.60.9858
Predominantly Downwind557.01.0772
Predominantly Upwind Low814.00.7371
Predominantly Upwind Medium631.00.9509
Predominantly Upwind High588.21.0200
Predominantly Downwind Low765.30.7840
Predominantly Downwind Medium551.11.0887
Predominantly Downwind High457.41.3118
Chicago-Mac Upwind0.9695
Chicago-Mac All Purpose1.0104
Chicago-Mac Downwind1.0604
Bayview-Mac Cove Island0.9350
Bayview-Mac Shore0.9391
Victoria-Maui1.1349
Custom scoring options for Cyprus
Single NumberTime On DistanceTime On Time
Coastal/Long Distance606.70.9889
Triple Number Coastal/Long Distance Low715.40.8387
Triple Number Coastal/Long Distance Medium553.21.0846
Triple Number Coastal/Long Distance High493.81.2151
Triple Number Windward/Leeward Low925.80.6481
Triple Number Windward/Leeward Medium682.40.8792
Triple Number Windward/Leeward High601.70.9972
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1021.1772.4640.6573.6538.6507.3448.7
Custom scoring options for Denmark
Single NumberTime On DistanceTime On Time
Coastal/Long Distance606.70.9889
Triple Number Coastal/Long Distance Low715.40.8387
Triple Number Coastal/Long Distance Medium553.21.0846
Triple Number Coastal/Long Distance High493.81.2151
Triple Number Windward/Leeward Low925.80.6481
Triple Number Windward/Leeward Medium682.40.8792
Triple Number Windward/Leeward High601.70.9972
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1021.1772.4640.6573.6538.6507.3448.7
Custom scoring options for Spain
Single NumberTime On Distance
Coastal/Long Distance606.7
Triple Number Coastal/Long Distance Low715.4
Triple Number Coastal/Long Distance Medium553.2
Triple Number Coastal/Long Distance High493.8
Triple Number Windward/Leeward Low925.8
Triple Number Windward/Leeward Medium682.4
Triple Number Windward/Leeward High601.7
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1021.1772.4640.6573.6538.6507.3448.7
Custom scoring options for Estonia
Single NumberTime On DistanceTime On Time
Coastal/Long Distance606.70.9889
Triple Number Coastal/Long Distance Low715.40.8387
Triple Number Coastal/Long Distance Medium553.21.0846
Triple Number Coastal/Long Distance High493.81.2151
Triple Number Windward/Leeward Low925.80.6481
Triple Number Windward/Leeward Medium682.40.8792
Triple Number Windward/Leeward High601.70.9972
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1021.1772.4640.6573.6538.6507.3448.7
Custom scoring options for Finland
Single NumberTime On DistanceTime On Time
FinRating (Coastal/Long Distance)606.70.9889
Triple Number Coastal/Long Distance Low715.40.8387
Triple Number Coastal/Long Distance Medium553.21.0846
Triple Number Coastal/Long Distance High493.81.2151
Triple Number Windward/Leeward Low925.80.6481
Triple Number Windward/Leeward Medium682.40.8792
Triple Number Windward/Leeward High601.70.9972
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1021.1772.4640.6573.6538.6507.3448.7
Custom scoring options for France
Single NumberTime On DistanceTime On Time
Triple Number Coastal/Long Distance Low715.40.8387
Triple Number Coastal/Long Distance Medium553.21.0846
Triple Number Coastal/Long Distance High493.81.2151
Triple Number Windward/Leeward Low925.80.6481
Triple Number Windward/Leeward Medium682.40.8792
Triple Number Windward/Leeward High601.70.9972
Custom scoring options for Germany
Single NumberTime On Time
Triple Number Coastal/Long Distance Low0.8387
Triple Number Coastal/Long Distance Medium1.0846
Triple Number Coastal/Long Distance High1.2151
Triple Number Windward/Leeward Low0.6481
Triple Number Windward/Leeward Medium0.8792
Triple Number Windward/Leeward High0.9972
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1021.1772.4640.6573.6538.6507.3448.7
Custom scoring options for Greece
Single NumberTime On DistanceTime On Time
Coastal/Long Distance606.70.9889
Triple Number Coastal/Long Distance Low715.40.8387
Triple Number Coastal/Long Distance Medium553.21.0846
Triple Number Coastal/Long Distance High493.81.2151
Triple Number Windward/Leeward Low925.80.6481
Triple Number Windward/Leeward Medium682.40.8792
Triple Number Windward/Leeward High601.70.9972
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1021.1772.4640.6573.6538.6507.3448.7
Custom scoring options for Hungary
Single NumberTime On DistanceTime On Time
Triple Number Coastal/Long Distance Low715.40.8387
Triple Number Coastal/Long Distance Medium553.21.0846
Triple Number Coastal/Long Distance High493.81.2151
Triple Number Windward/Leeward Low925.80.6481
Triple Number Windward/Leeward Medium682.40.8792
Triple Number Windward/Leeward High601.70.9972
Custom scoring options for Israel
Single NumberTime On DistanceTime On Time
Coastal/Long Distance606.70.9889
Triple Number Coastal/Long Distance Low715.40.8387
Triple Number Coastal/Long Distance Medium553.21.0846
Triple Number Coastal/Long Distance High493.81.2151
Triple Number Windward/Leeward Low925.80.6481
Triple Number Windward/Leeward Medium682.40.8792
Triple Number Windward/Leeward High601.70.9972
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1021.1772.4640.6573.6538.6507.3448.7
Custom scoring options for Italy
Single NumberTime On DistanceTime On Time
Coastal/Long Distance606.70.9889
Triple Number Coastal/Long Distance Low715.40.8387
Triple Number Coastal/Long Distance Medium553.21.0846
Triple Number Coastal/Long Distance High493.81.2151
Triple Number Windward/Leeward Low925.80.6481
Triple Number Windward/Leeward Medium682.40.8792
Triple Number Windward/Leeward High601.70.9972
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1021.1772.4640.6573.6538.6507.3448.7
Custom scoring options for Japan
Single NumberTime On DistanceTime On Time
Triple Number Windward/Leeward Low925.80.6481
Triple Number Windward/Leeward Medium682.40.8792
Triple Number Windward/Leeward High601.70.9972
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1021.1772.4640.6573.6538.6507.3448.7
Custom scoring options for Korea
Single NumberTime On Distance
Triple Number Coastal/Long Distance Low715.4
Triple Number Coastal/Long Distance Medium553.2
Triple Number Coastal/Long Distance High493.8
Triple Number Windward/Leeward Low925.8
Triple Number Windward/Leeward Medium682.4
Triple Number Windward/Leeward High601.7
Predominantly Upwind608.6
Predominantly Downwind557.0
Predominantly Reaching535.7
Custom scoring options for Lithuania
Single NumberTime On DistanceTime On Time
Coastal/Long Distance606.70.9889
Triple Number Coastal/Long Distance Low715.40.8387
Triple Number Coastal/Long Distance Medium553.21.0846
Triple Number Coastal/Long Distance High493.81.2151
Triple Number Windward/Leeward Low925.80.6481
Triple Number Windward/Leeward Medium682.40.8792
Triple Number Windward/Leeward High601.70.9972
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1021.1772.4640.6573.6538.6507.3448.7
Custom scoring options for Netherlands
Single NumberTime On Time
Triple Number Coastal/Long Distance Low0.8387
Triple Number Coastal/Long Distance Medium1.0846
Triple Number Coastal/Long Distance High1.2151
Triple Number Windward/Leeward Low0.6481
Triple Number Windward/Leeward Medium0.8792
Triple Number Windward/Leeward High0.9972
Coastal/Long Distance0.9889
Predominantly Upwind0.9858
Predominantly Downwind1.0772
Custom scoring options for Norway
Single NumberTime On Time
Distanseseilas (NOR-rating ett tall)0.9889
Tretall Distanseseilas Lite vind0.8387
Tretall Distanseseilas Mellomvind1.0846
Tretall Distanseseilas Mye vind1.2151
Tretall Pølsebane Lite vind0.6481
Tretall Pølsebane Mellomvind0.8792
Tretall Pølsebane Mye vind0.9972
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Distanseseilas1021.1772.4640.6573.6538.6507.3448.7
Custom scoring options for Portugal
Single NumberTime On DistanceTime On Time
Triple Number Coastal/Long Distance Low715.40.8387
Triple Number Coastal/Long Distance Medium553.21.0846
Triple Number Coastal/Long Distance High493.81.2151
Triple Number Windward/Leeward Low925.80.6481
Triple Number Windward/Leeward Medium682.40.8792
Triple Number Windward/Leeward High601.70.9972
Coastal/Long Distance606.70.9889
Custom scoring options for Russia
Single NumberTime On DistanceTime On Time
Predominantly Upwind608.60.9858
Predominantly Downwind557.01.0772
Custom scoring options for South Africa
Single NumberTime On DistanceTime On Time
Cape Doctor Inshore580.91.0328
Cape Doctor Coastal478.81.2531
Triple Number Coastal/Long Distance Low715.40.8387
Triple Number Coastal/Long Distance Medium553.21.0846
Triple Number Coastal/Long Distance High493.81.2151
Triple Number Windward/Leeward Low925.80.6481
Triple Number Windward/Leeward Medium682.40.8792
Triple Number Windward/Leeward High601.70.9972
Custom scoring options for Slovenia
Single NumberTime On Time
Triple Number Coastal/Long Distance Low0.8387
Triple Number Coastal/Long Distance Medium1.0846
Triple Number Coastal/Long Distance High1.2151
Triple Number Windward/Leeward Low0.6481
Triple Number Windward/Leeward Medium0.8792
Triple Number Windward/Leeward High0.9972
Custom scoring options for Switzerland
Single NumberTime On Time
Triple Number Coastal/Long Distance Low0.8387
Triple Number Coastal/Long Distance Medium1.0846
Triple Number Coastal/Long Distance High1.2151
Triple Number Windward/Leeward Low0.6481
Triple Number Windward/Leeward Medium0.8792
Triple Number Windward/Leeward High0.9972
Custom scoring options for Sweden
Single NumberTime On DistanceTime On Time
Coastal/Long Distance606.70.9889
Triple Number Coastal/Long Distance Low715.40.8387
Triple Number Coastal/Long Distance Medium553.21.0846
Triple Number Coastal/Long Distance High493.81.2151
Triple Number Windward/Leeward Low925.80.6481
Triple Number Windward/Leeward Medium682.40.8792
Triple Number Windward/Leeward High601.70.9972
Predominantly Upwind608.60.9858
Predominantly Downwind557.01.0772
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1021.1772.4640.6573.6538.6507.3448.7
Custom scoring options for Ukraine
Single NumberTime On DistanceTime On Time
Coastal/Long Distance606.70.9889
Triple Number Coastal/Long Distance Low715.40.8387
Triple Number Coastal/Long Distance Medium553.21.0846
Triple Number Coastal/Long Distance High493.81.2151
Triple Number Windward/Leeward Low925.80.6481
Triple Number Windward/Leeward Medium682.40.8792
Triple Number Windward/Leeward High601.70.9972
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1021.1772.4640.6573.6538.6507.3448.7
Custom scoring options for United States of America
Single NumberTime On DistanceTime On Time
Triple Number All Purpose Low715.40.8387
Triple Number All Purpose Medium553.21.0846
Triple Number All Purpose High493.81.2151
Triple Number Windward/Leeward Low925.80.6481
Triple Number Windward/Leeward Medium682.40.8792
Triple Number Windward/Leeward High601.70.9972
Predominantly Upwind608.60.9858
Predominantly Downwind557.01.0772
Predominantly Upwind Low814.00.7371
Predominantly Upwind Medium631.00.9509
Predominantly Upwind High588.21.0200
Predominantly Downwind Low765.30.7840
Predominantly Downwind Medium551.11.0887
Predominantly Downwind High457.41.3118
Chicago-Mac Upwind0.9695
Chicago-Mac All Purpose1.0104
Chicago-Mac Downwind1.0604
Bayview-Mac Cove Island0.9350
Bayview-Mac Shore0.9391
Harvest Moon Regatta488.11.2293
Victoria-Maui1.1349
5-Band
Windward/Leeward		Time On DistanceTime On Time
5-Band Low1012.10.5928
5-Band Low / Medium843.50.7113
5-Band Medium672.30.8925
5-Band Medium / High613.40.9782
5-Band High574.91.0437
ORC Ref  045600028BKIssued on 17/08/2022Valid until 31/12/2022
VPP ver: 2022 1.04 | © ORC | www.orc.org

Club
Certificate
2022

Boat

FEATHER

USA 23

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ 100Measurement04/05/2007HINPlan reviewHull constructionCoredCarbon RudderNoLight stanchionsNoTrim tabNo
LOA10.050Max. Beam2.810Draft1.757Displacement3,136Wetted area18.81IMS L9.336LSM09.171Acc. length9.133Sink (kg/mm) 14.12
VCGD-0.005VCGM-0.031RM Measured (kg·m) 60.8RM Default (kg·m) 58.6Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.405PBW0.107PIPA0.0030
EDL1.270ST10.052ST20.168
ST30.177ST40.094ST50.280
RIG
Forestay tensionAftInner stayNone FittedCarbon mastYesHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders2
P11.582IG11.735ISP13.106MDT10.109MDL10.173MDT20.088MDL20.125TL1.333MW0.160GO0.160
E4.115J3.510BAS1.363FSD0.026SFJ0.410SPL0.000WPLTPS4.877BD0.126MWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodPoles incliningFlotation Date24/05/2007MeasurerComment
SFFP0.300FFMFF1.035LCFcl5.517SG1.0240
SAFP9.640FAMFA0.739LCFsh5.692HBI0.866
W140.8W240.8W340.8W440.8
PD1337.0PD2337.0PD3337.0PD4337.0
WD10.190PLM2840.00GSA0.6RSA71.9
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  045600028BKIssued on 17/08/2022Valid until 31/12/2022
VPP ver: 2022 1.04 | © ORC | www.orc.org

Club
Certificate
2022

Boat

FEATHER

USA 23

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateMakerMaterialCommentM10.140.861.562.663.4128.2706/08/2021North
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateMakerMaterialCommentJib M/H0.080.561.031.872.743.6911.48NoNo 21.5603/07/2022NorthUnknownJib0.080.500.951.822.683.5011.50NoNo 20.7307/09/2021NorthNorth class jib
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateMakerMaterialCommentAsym14.8411.6513.258.027.55106%87.4815/02/2022QuantumUnknown
ORC Ref  045600028BKIssued on 17/08/2022Valid until 31/12/2022
VPP ver: 2022 1.04 | © ORC | www.orc.org