International
Certificate
2022

Boat

AURORA

USA50085

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 Angles44.2°42.0°40.5°39.6°38.4°37.6°37.2°
Beat VMG5.326.406.957.287.577.797.93
52°8.269.6810.2110.5010.7211.0311.36
60°8.9010.1710.6310.9611.2311.5812.11
75°9.4910.6011.3011.8412.2312.5313.36
90°9.4410.6211.6212.4913.0813.5614.27
110°8.5010.2710.9611.9013.0914.2916.19
120°8.2410.1311.2012.0012.7613.5016.16
135°7.349.4110.6611.8913.2814.3716.41
150°6.147.919.4210.4611.4912.8216.16
Run VMG5.316.858.159.079.9511.1014.00
Gybe Angles140.6°141.2°146.6°151.6°146.6°143.8°145.6°

APH: 363.5

CDL: 18.685

GPH: 408.2

CertNo: US4157

BOAT
ClassR/P 66DesignerR/PBuilderAge date01/2006Series date01/1960Offset fileUSA25.offData fileUS41572 AURORA
HULL
Length Overall20.228 mMaximum Beam4.800 mDraft4.124 mDisplacement14,520 kgDLR2.1114IMS DivisionPerformanceDynamic Allowance0.003%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.457m
CREW
Maximum weight1,275 kgMinimum weight956 kg * when appliedNon Manual PowerCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail147.82150.69Headsail Luffed99.6399.63Headsail FlyingSymmetricAsymmetric350.51350.51 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail44.13Storm Jib33.04Heavy Weather Jib89.21
SAIL LIMITS
Headsails8  Spinnakers6
STABILITY
Righting Moment767.0 kg·mStability Index158.1
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  045600023R8Issued on 27/05/2022Valid until 31/01/2023
VPP ver: 2022 1.02 | © ORC | www.orc.org

International
Certificate
2022

Boat

AURORA

USA50085

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 VMG676.6562.2517.7494.4475.4462.4453.8
52°435.7371.8352.5342.9335.9326.4316.8
60°404.5354.1338.8328.5320.5310.8297.4
75°379.4339.7318.5304.1294.3287.2269.4
90°381.3339.1309.9288.2275.1265.4252.2
110°423.4350.4328.6302.6275.1251.9222.4
120°437.1355.5321.4300.0282.1266.7222.7
135°490.1382.5337.9302.6271.2250.5219.3
150°586.7455.0382.3344.1313.2280.8222.7
Run VMG677.4525.3441.5396.8361.7324.3257.2
Selected Courses
Windward / Leeward677.0543.8479.6445.6418.5393.3355.5
All purpose511.9421.3380.3355.1334.8317.3290.1
Single Number Scoring Options
CourseTime On DistanceTime On Time
Windward / Leeward458.61.3082
All purpose363.51.6506
 
Custom scoring options for Australia
Single NumberTime On DistanceTime On Time
Triple Number Coastal/Long Distance Low466.61.2858
Triple Number Coastal/Long Distance Medium363.91.6486
Triple Number Coastal/Long Distance High311.41.9265
Triple Number Windward/Leeward Low610.40.9830
Triple Number Windward/Leeward Medium458.31.3091
Triple Number Windward/Leeward High385.51.5566
Custom scoring options for Austria
Single NumberTime On DistanceTime On Time
Coastal/Long Distance399.41.5022
Triple Number Coastal/Long Distance Low466.61.2858
Triple Number Coastal/Long Distance Medium363.91.6486
Triple Number Coastal/Long Distance High311.41.9265
Triple Number Windward/Leeward Low610.40.9830
Triple Number Windward/Leeward Medium458.31.3091
Triple Number Windward/Leeward High385.51.5566
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance677.1510.2430.1382.5350.9322.3273.8
Custom scoring options for Brazil
Single NumberTime On Time
Upwind "bolina"1.1531
Downwind "popa"1.4074
70% up, 30% down "Ilhabela"1.2192
30% up, 70% down "Ilhabela-inverso"1.3201
Custom scoring options for Bulgaria
Single NumberTime On DistanceTime On Time
Triple Number Coastal/Long Distance Low466.61.2858
Triple Number Coastal/Long Distance Medium363.91.6486
Triple Number Coastal/Long Distance High311.41.9265
Triple Number Windward/Leeward Low610.40.9830
Triple Number Windward/Leeward Medium458.31.3091
Triple Number Windward/Leeward High385.51.5566
Predominantly Upwind396.11.5146
Predominantly Downwind365.81.6401
Custom scoring options for Canada
Single NumberTime On DistanceTime On Time
Triple Number All Purpose Low466.61.2858
Triple Number All Purpose Medium363.91.6486
Triple Number All Purpose High311.41.9265
Triple Number Windward/Leeward Low610.40.9830
Triple Number Windward/Leeward Medium458.31.3091
Triple Number Windward/Leeward High385.51.5566
Predominantly Upwind396.11.5146
Predominantly Downwind365.81.6401
Predominantly Upwind Low518.21.1579
Predominantly Upwind Medium414.91.4462
Predominantly Upwind High379.61.5807
Predominantly Downwind Low516.91.1607
Predominantly Downwind Medium365.91.6396
Predominantly Downwind High286.62.0938
Chicago-Mac Upwind1.4854
Chicago-Mac All Purpose1.5435
Chicago-Mac Downwind1.6059
Bayview-Mac Cove Island1.4381
Bayview-Mac Shore1.4519
Victoria-Maui1.7471
Custom scoring options for Cyprus
Single NumberTime On DistanceTime On Time
Coastal/Long Distance399.41.5022
Triple Number Coastal/Long Distance Low466.61.2858
Triple Number Coastal/Long Distance Medium363.91.6486
Triple Number Coastal/Long Distance High311.41.9265
Triple Number Windward/Leeward Low610.40.9830
Triple Number Windward/Leeward Medium458.31.3091
Triple Number Windward/Leeward High385.51.5566
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance677.1510.2430.1382.5350.9322.3273.8
Custom scoring options for Denmark
Single NumberTime On DistanceTime On Time
Coastal/Long Distance399.41.5022
Triple Number Coastal/Long Distance Low466.61.2858
Triple Number Coastal/Long Distance Medium363.91.6486
Triple Number Coastal/Long Distance High311.41.9265
Triple Number Windward/Leeward Low610.40.9830
Triple Number Windward/Leeward Medium458.31.3091
Triple Number Windward/Leeward High385.51.5566
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance677.1510.2430.1382.5350.9322.3273.8
Custom scoring options for Spain
Single NumberTime On Distance
Coastal/Long Distance399.4
Triple Number Coastal/Long Distance Low466.6
Triple Number Coastal/Long Distance Medium363.9
Triple Number Coastal/Long Distance High311.4
Triple Number Windward/Leeward Low610.4
Triple Number Windward/Leeward Medium458.3
Triple Number Windward/Leeward High385.5
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance677.1510.2430.1382.5350.9322.3273.8
Custom scoring options for Estonia
Single NumberTime On DistanceTime On Time
Coastal/Long Distance399.41.5022
Triple Number Coastal/Long Distance Low466.61.2858
Triple Number Coastal/Long Distance Medium363.91.6486
Triple Number Coastal/Long Distance High311.41.9265
Triple Number Windward/Leeward Low610.40.9830
Triple Number Windward/Leeward Medium458.31.3091
Triple Number Windward/Leeward High385.51.5566
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance677.1510.2430.1382.5350.9322.3273.8
Custom scoring options for Finland
Single NumberTime On DistanceTime On Time
FinRating (Coastal/Long Distance)399.41.5022
Triple Number Coastal/Long Distance Low466.61.2858
Triple Number Coastal/Long Distance Medium363.91.6486
Triple Number Coastal/Long Distance High311.41.9265
Triple Number Windward/Leeward Low610.40.9830
Triple Number Windward/Leeward Medium458.31.3091
Triple Number Windward/Leeward High385.51.5566
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance677.1510.2430.1382.5350.9322.3273.8
Custom scoring options for France
Single NumberTime On DistanceTime On Time
Triple Number Coastal/Long Distance Low466.61.2858
Triple Number Coastal/Long Distance Medium363.91.6486
Triple Number Coastal/Long Distance High311.41.9265
Triple Number Windward/Leeward Low610.40.9830
Triple Number Windward/Leeward Medium458.31.3091
Triple Number Windward/Leeward High385.51.5566
Custom scoring options for Germany
Single NumberTime On Time
Triple Number Coastal/Long Distance Low1.2858
Triple Number Coastal/Long Distance Medium1.6486
Triple Number Coastal/Long Distance High1.9265
Triple Number Windward/Leeward Low0.9830
Triple Number Windward/Leeward Medium1.3091
Triple Number Windward/Leeward High1.5566
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance677.1510.2430.1382.5350.9322.3273.8
Custom scoring options for Greece
Single NumberTime On DistanceTime On Time
Coastal/Long Distance399.41.5022
Triple Number Coastal/Long Distance Low466.61.2858
Triple Number Coastal/Long Distance Medium363.91.6486
Triple Number Coastal/Long Distance High311.41.9265
Triple Number Windward/Leeward Low610.40.9830
Triple Number Windward/Leeward Medium458.31.3091
Triple Number Windward/Leeward High385.51.5566
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance677.1510.2430.1382.5350.9322.3273.8
Custom scoring options for Hungary
Single NumberTime On DistanceTime On Time
Triple Number Coastal/Long Distance Low466.61.2858
Triple Number Coastal/Long Distance Medium363.91.6486
Triple Number Coastal/Long Distance High311.41.9265
Triple Number Windward/Leeward Low610.40.9830
Triple Number Windward/Leeward Medium458.31.3091
Triple Number Windward/Leeward High385.51.5566
Custom scoring options for Israel
Single NumberTime On DistanceTime On Time
Coastal/Long Distance399.41.5022
Triple Number Coastal/Long Distance Low466.61.2858
Triple Number Coastal/Long Distance Medium363.91.6486
Triple Number Coastal/Long Distance High311.41.9265
Triple Number Windward/Leeward Low610.40.9830
Triple Number Windward/Leeward Medium458.31.3091
Triple Number Windward/Leeward High385.51.5566
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance677.1510.2430.1382.5350.9322.3273.8
Custom scoring options for Italy
Single NumberTime On DistanceTime On Time
Coastal/Long Distance399.41.5022
Triple Number Coastal/Long Distance Low466.61.2858
Triple Number Coastal/Long Distance Medium363.91.6486
Triple Number Coastal/Long Distance High311.41.9265
Triple Number Windward/Leeward Low610.40.9830
Triple Number Windward/Leeward Medium458.31.3091
Triple Number Windward/Leeward High385.51.5566
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance677.1510.2430.1382.5350.9322.3273.8
Custom scoring options for Japan
Single NumberTime On DistanceTime On Time
Triple Number Windward/Leeward Low610.40.9830
Triple Number Windward/Leeward Medium458.31.3091
Triple Number Windward/Leeward High385.51.5566
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance677.1510.2430.1382.5350.9322.3273.8
Custom scoring options for Korea
Single NumberTime On Distance
Triple Number Coastal/Long Distance Low466.6
Triple Number Coastal/Long Distance Medium363.9
Triple Number Coastal/Long Distance High311.4
Triple Number Windward/Leeward Low610.4
Triple Number Windward/Leeward Medium458.3
Triple Number Windward/Leeward High385.5
Predominantly Upwind396.1
Predominantly Downwind365.8
Predominantly Reaching345.8
Custom scoring options for Lithuania
Single NumberTime On DistanceTime On Time
Coastal/Long Distance399.41.5022
Triple Number Coastal/Long Distance Low466.61.2858
Triple Number Coastal/Long Distance Medium363.91.6486
Triple Number Coastal/Long Distance High311.41.9265
Triple Number Windward/Leeward Low610.40.9830
Triple Number Windward/Leeward Medium458.31.3091
Triple Number Windward/Leeward High385.51.5566
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance677.1510.2430.1382.5350.9322.3273.8
Custom scoring options for Netherlands
Single NumberTime On Time
Triple Number Coastal/Long Distance Low1.2858
Triple Number Coastal/Long Distance Medium1.6486
Triple Number Coastal/Long Distance High1.9265
Triple Number Windward/Leeward Low0.9830
Triple Number Windward/Leeward Medium1.3091
Triple Number Windward/Leeward High1.5566
Coastal/Long Distance1.5022
Predominantly Upwind1.5146
Predominantly Downwind1.6401
Custom scoring options for Norway
Single NumberTime On Time
Distanseseilas (NOR-rating ett tall)1.5022
Tretall Distanseseilas Lite vind1.2858
Tretall Distanseseilas Mellomvind1.6486
Tretall Distanseseilas Mye vind1.9265
Tretall Pølsebane Lite vind0.9830
Tretall Pølsebane Mellomvind1.3091
Tretall Pølsebane Mye vind1.5566
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Distanseseilas677.1510.2430.1382.5350.9322.3273.8
Custom scoring options for Portugal
Single NumberTime On DistanceTime On Time
Triple Number Coastal/Long Distance Low466.61.2858
Triple Number Coastal/Long Distance Medium363.91.6486
Triple Number Coastal/Long Distance High311.41.9265
Triple Number Windward/Leeward Low610.40.9830
Triple Number Windward/Leeward Medium458.31.3091
Triple Number Windward/Leeward High385.51.5566
Coastal/Long Distance399.41.5022
Custom scoring options for Russia
Single NumberTime On DistanceTime On Time
Predominantly Upwind396.11.5146
Predominantly Downwind365.81.6401
Custom scoring options for South Africa
Single NumberTime On DistanceTime On Time
Cape Doctor Inshore366.81.6356
Cape Doctor Coastal298.22.0119
Triple Number Coastal/Long Distance Low466.61.2858
Triple Number Coastal/Long Distance Medium363.91.6486
Triple Number Coastal/Long Distance High311.41.9265
Triple Number Windward/Leeward Low610.40.9830
Triple Number Windward/Leeward Medium458.31.3091
Triple Number Windward/Leeward High385.51.5566
Custom scoring options for Slovenia
Single NumberTime On Time
Triple Number Coastal/Long Distance Low1.2858
Triple Number Coastal/Long Distance Medium1.6486
Triple Number Coastal/Long Distance High1.9265
Triple Number Windward/Leeward Low0.9830
Triple Number Windward/Leeward Medium1.3091
Triple Number Windward/Leeward High1.5566
Custom scoring options for Switzerland
Single NumberTime On Time
Triple Number Coastal/Long Distance Low1.2858
Triple Number Coastal/Long Distance Medium1.6486
Triple Number Coastal/Long Distance High1.9265
Triple Number Windward/Leeward Low0.9830
Triple Number Windward/Leeward Medium1.3091
Triple Number Windward/Leeward High1.5566
Custom scoring options for Sweden
Single NumberTime On DistanceTime On Time
Coastal/Long Distance399.41.5022
Triple Number Coastal/Long Distance Low466.61.2858
Triple Number Coastal/Long Distance Medium363.91.6486
Triple Number Coastal/Long Distance High311.41.9265
Triple Number Windward/Leeward Low610.40.9830
Triple Number Windward/Leeward Medium458.31.3091
Triple Number Windward/Leeward High385.51.5566
Predominantly Upwind396.11.5146
Predominantly Downwind365.81.6401
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance677.1510.2430.1382.5350.9322.3273.8
Custom scoring options for Ukraine
Single NumberTime On DistanceTime On Time
Coastal/Long Distance399.41.5022
Triple Number Coastal/Long Distance Low466.61.2858
Triple Number Coastal/Long Distance Medium363.91.6486
Triple Number Coastal/Long Distance High311.41.9265
Triple Number Windward/Leeward Low610.40.9830
Triple Number Windward/Leeward Medium458.31.3091
Triple Number Windward/Leeward High385.51.5566
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance677.1510.2430.1382.5350.9322.3273.8
Custom scoring options for United States of America
Single NumberTime On DistanceTime On Time
Triple Number All Purpose Low466.61.2858
Triple Number All Purpose Medium363.91.6486
Triple Number All Purpose High311.41.9265
Triple Number Windward/Leeward Low610.40.9830
Triple Number Windward/Leeward Medium458.31.3091
Triple Number Windward/Leeward High385.51.5566
Predominantly Upwind396.11.5146
Predominantly Downwind365.81.6401
Predominantly Upwind Low518.21.1579
Predominantly Upwind Medium414.91.4462
Predominantly Upwind High379.61.5807
Predominantly Downwind Low516.91.1607
Predominantly Downwind Medium365.91.6396
Predominantly Downwind High286.62.0938
Chicago-Mac Upwind1.4854
Chicago-Mac All Purpose1.5435
Chicago-Mac Downwind1.6059
Bayview-Mac Cove Island1.4381
Bayview-Mac Shore1.4519
Harvest Moon Regatta312.81.9182
Victoria-Maui1.7471
5-Band
Windward/Leeward		Time On DistanceTime On Time
5-Band Low666.80.8999
5-Band Low / Medium559.71.0720
5-Band Medium450.51.3320
5-Band Medium / High395.71.5165
5-Band High362.01.6573
ORC Ref  045600023R8Issued on 27/05/2022Valid until 31/01/2023
VPP ver: 2022 1.02 | © ORC | www.orc.org

International
Certificate
2022

Boat

AURORA

USA50085

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassR/P 66Measurement03/07/2020HINPlan reviewHull constructionCarbonAramid Hull CoreNoCarbon RudderYesLight stanchionsNoTrim tabNo
LOA20.228Max. Beam4.800Draft4.124Displacement14,520Wetted area61.19IMS L19.125LSM019.015Acc. length15.600Sink (kg/mm) 45.96
VCGD-1.245VCGM-1.266RM Measured (kg·m) 767.0RM Default (kg·m) 765.4Limit of positive stability(°) 150.2Stability Index158.1
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.457PBW0.118PIPA0.0037
EDL1.051ST10.048ST20.174
ST30.174ST40.109ST50.271
RIG
Forestay tensionAftInner stayCarbon mastYesHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders3
P26.940IG25.645ISP29.393MDT10.173MDL10.396MDT20.122MDL20.222TL3.425MW0.222GO0.240
E9.360J7.630BAS2.134FSDSFJ0.664SPL0.000WPLTPS10.620BD0.420MWT481.80MCG10.252
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodPoles incliningFlotation Date03/07/2020MeasurerComment
SFFP0.300FFM1.726FF1.729LCFcl11.127SG1.0190
SAFP19.700FAM1.326FA1.327LCFsh11.356HBI1.449
W1228.9W2228.9W3228.9W4228.9
PD1431.7PD2431.7PD3431.7PD4431.7
WD18.370PLM9000.00GSA1.0RSA1.0
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  045600023R8Issued on 27/05/2022Valid until 31/01/2023
VPP ver: 2022 1.02 | © ORC | www.orc.org

International
Certificate
2022

Boat

AURORA

USA50085

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateMakerMaterialComment00.232.203.645.787.60147.82Unknown
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateMakerMaterialComment00.201.051.953.805.827.9325.47NoNo 99.63Unknown
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateMakerMaterialComment031.3426.6629.0014.0316.4086%350.51Unknown
ORC Ref  045600023R8Issued on 27/05/2022Valid until 31/01/2023
VPP ver: 2022 1.02 | © ORC | www.orc.org