Club
Certificate
2023

Boat

UNKNOWN LADY NAI

USA 28380

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 Angles41.8°38.8°37.0°36.4°35.8°35.4°35.8°
Beat VMG4.445.225.565.755.875.945.95
52°6.667.497.787.948.048.118.17
60°6.957.697.988.148.258.338.42
75°7.127.818.198.428.588.698.85
90°6.987.758.208.578.869.069.33
110°6.477.568.158.649.119.5510.25
120°6.107.368.058.599.099.6310.71
135°5.456.787.688.258.809.3910.89
150°4.575.826.897.678.218.729.93
Run VMG3.965.045.976.737.357.908.85
Gybe Angles142.2°146.0°150.5°156.5°164.6°175.4°175.7°

APH: 491.0

CDL: 11.169

GPH: 546.0

CertNo: US2838

BOAT
ClassSYDNEY 41DesignerMURRAYBuilderBASHFORDAge date08/1994Series date08/1994Offset fileUS30993.OFFData fileUS2838
HULL
Length Overall12.450 mMaximum Beam3.749 mDraft2.766 mDisplacement5,568 kgDLR5.1139IMS DivisionPerformanceDynamic Allowance0.000%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.418m
CREW
Maximum weight900 kgMinimum weight675 kg * when appliedNon Manual PowerNoCrew Arm Extension0.00 m
SAIL AREAS (m²)
MeasuredRatedMainsail48.7349.76Headsail Luffed64.7464.74Headsail FlyingSymmetric123.76123.76Asymmetric86.3798.46 (1 asymmetric(s) with SHW/SFL < 85%)
STORM SAIL AREAS (m²)
Trysail14.28Storm Jib14.92Heavy Weather Jib40.28
SAIL LIMITS
Headsails6  Spinnakers5 * Asymmetric may be tacked on the pole
STABILITY
Righting MomentN/AStability 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  04560002N7QIssued on 30/05/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

UNKNOWN LADY NAI

USA 28380

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 VMG810.2689.7647.3626.2613.5605.9604.8
52°540.2480.5462.5453.6448.0444.1440.6
60°517.8468.1450.9442.1436.4432.2427.5
75°505.8461.0439.6427.6419.8414.3406.7
90°515.7464.3438.8420.1406.4397.5385.7
110°556.3476.1441.7416.6395.1376.9351.1
120°590.6489.4447.0419.2396.1374.0336.2
135°660.9530.6468.9436.4409.2383.4330.6
150°786.9619.0522.5469.1438.6412.8362.5
Run VMG908.6714.8603.2534.5489.7455.6406.9
Selected Courses
Windward / Leeward859.4702.2625.2580.3551.6530.8505.8
All purpose660.1555.3506.9478.6459.5444.7422.7
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward601.00.9983
All purpose491.01.2220
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low607.70.9873
Triple Number Coastal/Long Distance Medium489.61.2254
Triple Number Coastal/Long Distance High440.21.3631
Triple Number Windward/Leeward Low780.80.7684
Triple Number Windward/Leeward Medium598.31.0029
Triple Number Windward/Leeward High526.61.1393
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance533.11.1254
Triple Number Coastal/Long Distance Low607.70.9873
Triple Number Coastal/Long Distance Medium489.61.2254
Triple Number Coastal/Long Distance High440.21.3631
Triple Number Windward/Leeward Low780.80.7684
Triple Number Windward/Leeward Medium598.31.0029
Triple Number Windward/Leeward High526.61.1393
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance864.3663.8567.4509.6476.8449.5405.5
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.9135
Downwind "popa"1.0211
70% up, 30% down "Ilhabela"0.9433
30% up, 70% down "Ilhabela-inverso"0.9862
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low607.70.9873
Triple Number Coastal/Long Distance Medium489.61.2254
Triple Number Coastal/Long Distance High440.21.3631
Triple Number Windward/Leeward Low780.80.7684
Triple Number Windward/Leeward Medium598.31.0029
Triple Number Windward/Leeward High526.61.1393
Predominantly Upwind524.01.1450
Predominantly Downwind503.71.1912
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low607.70.9873
Triple Number All Purpose Medium489.61.2254
Triple Number All Purpose High440.21.3631
Triple Number Windward/Leeward Low780.80.7684
Triple Number Windward/Leeward Medium598.31.0029
Triple Number Windward/Leeward High526.61.1393
Predominantly Upwind524.01.1450
Predominantly Downwind503.71.1912
Predominantly Upwind Low653.30.9184
Predominantly Upwind Medium539.71.1117
Predominantly Upwind High513.61.1683
Predominantly Downwind Low687.70.8725
Predominantly Downwind Medium505.91.1859
Predominantly Downwind High419.31.4311
Chicago-Mac Upwind1.1266
Chicago-Mac All Purpose1.1463
Chicago-Mac Downwind1.1700
Bayview-Mac Cove Island1.0850
Bayview-Mac Shore1.0988
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching467.31.2841
Predominantly Reaching Low555.61.0799
Predominantly Reaching Medium465.31.2896
Predominantly Reaching High412.21.4558
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low847.30.7081
5-Band Low / Medium720.30.8329
5-Band Medium589.01.0187
5-Band Medium / High534.31.1230
5-Band High510.21.1761
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance533.11.1254
Triple Number Coastal/Long Distance Low607.70.9873
Triple Number Coastal/Long Distance Medium489.61.2254
Triple Number Coastal/Long Distance High440.21.3631
Triple Number Windward/Leeward Low780.80.7684
Triple Number Windward/Leeward Medium598.31.0029
Triple Number Windward/Leeward High526.61.1393
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance864.3663.8567.4509.6476.8449.5405.5
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance533.11.1254
Triple Number Coastal/Long Distance Low607.70.9873
Triple Number Coastal/Long Distance Medium489.61.2254
Triple Number Coastal/Long Distance High440.21.3631
Triple Number Windward/Leeward Low780.80.7684
Triple Number Windward/Leeward Medium598.31.0029
Triple Number Windward/Leeward High526.61.1393
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance864.3663.8567.4509.6476.8449.5405.5
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance533.1
Triple Number Coastal/Long Distance Low607.7
Triple Number Coastal/Long Distance Medium489.6
Triple Number Coastal/Long Distance High440.2
Triple Number Windward/Leeward Low780.8
Triple Number Windward/Leeward Medium598.3
Triple Number Windward/Leeward High526.6
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance864.3663.8567.4509.6476.8449.5405.5
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance533.11.1254
Triple Number Coastal/Long Distance Low607.70.9873
Triple Number Coastal/Long Distance Medium489.61.2254
Triple Number Coastal/Long Distance High440.21.3631
Triple Number Windward/Leeward Low780.80.7684
Triple Number Windward/Leeward Medium598.31.0029
Triple Number Windward/Leeward High526.61.1393
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance864.3663.8567.4509.6476.8449.5405.5
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)533.11.1254
Triple Number Coastal/Long Distance Low607.70.9873
Triple Number Coastal/Long Distance Medium489.61.2254
Triple Number Coastal/Long Distance High440.21.3631
Triple Number Windward/Leeward Low780.80.7684
Triple Number Windward/Leeward Medium598.31.0029
Triple Number Windward/Leeward High526.61.1393
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance864.3663.8567.4509.6476.8449.5405.5
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low607.70.9873
Triple Number Coastal/Long Distance Medium489.61.2254
Triple Number Coastal/Long Distance High440.21.3631
Triple Number Windward/Leeward Low780.80.7684
Triple Number Windward/Leeward Medium598.31.0029
Triple Number Windward/Leeward High526.61.1393
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9873
Triple Number Coastal/Long Distance Medium1.2254
Triple Number Coastal/Long Distance High1.3631
Triple Number Windward/Leeward Low0.7684
Triple Number Windward/Leeward Medium1.0029
Triple Number Windward/Leeward High1.1393
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance864.3663.8567.4509.6476.8449.5405.5
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance533.11.1254
Triple Number Coastal/Long Distance Low607.70.9873
Triple Number Coastal/Long Distance Medium489.61.2254
Triple Number Coastal/Long Distance High440.21.3631
Triple Number Windward/Leeward Low780.80.7684
Triple Number Windward/Leeward Medium598.31.0029
Triple Number Windward/Leeward High526.61.1393
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance864.3663.8567.4509.6476.8449.5405.5
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low607.70.9873
Triple Number Coastal/Long Distance Medium489.61.2254
Triple Number Coastal/Long Distance High440.21.3631
Triple Number Windward/Leeward Low780.80.7684
Triple Number Windward/Leeward Medium598.31.0029
Triple Number Windward/Leeward High526.61.1393
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance533.11.1254
Triple Number Coastal/Long Distance Low607.70.9873
Triple Number Coastal/Long Distance Medium489.61.2254
Triple Number Coastal/Long Distance High440.21.3631
Triple Number Windward/Leeward Low780.80.7684
Triple Number Windward/Leeward Medium598.31.0029
Triple Number Windward/Leeward High526.61.1393
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance864.3663.8567.4509.6476.8449.5405.5
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low780.80.7684
Triple Number Windward/Leeward Medium598.31.0029
Triple Number Windward/Leeward High526.61.1393
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance864.3663.8567.4509.6476.8449.5405.5
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low607.7
Triple Number Coastal/Long Distance Medium489.6
Triple Number Coastal/Long Distance High440.2
Triple Number Windward/Leeward Low780.8
Triple Number Windward/Leeward Medium598.3
Triple Number Windward/Leeward High526.6
Predominantly Upwind524.0
Predominantly Downwind503.7
Predominantly Reaching480.0
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance533.11.1254
Triple Number Coastal/Long Distance Low607.70.9873
Triple Number Coastal/Long Distance Medium489.61.2254
Triple Number Coastal/Long Distance High440.21.3631
Triple Number Windward/Leeward Low780.80.7684
Triple Number Windward/Leeward Medium598.31.0029
Triple Number Windward/Leeward High526.61.1393
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance864.3663.8567.4509.6476.8449.5405.5
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9873
Triple Number Coastal/Long Distance Medium1.2254
Triple Number Coastal/Long Distance High1.3631
Triple Number Windward/Leeward Low0.7684
Triple Number Windward/Leeward Medium1.0029
Triple Number Windward/Leeward High1.1393
Coastal/Long Distance1.1254
Predominantly Upwind1.1450
Predominantly Downwind1.1912
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.9873
Tretall Distanseseilas Mellomvind1.2254
Tretall Distanseseilas Mye vind1.3631
Tretall Pølsebane Lite vind0.7684
Tretall Pølsebane Mellomvind1.0029
Tretall Pølsebane Mye vind1.1393
Distanseseilas ett tall (OSN 8-16kn)1.1254
Distanseseilas ett tall (APH 6-20kn)1.2220
Enkeltall Motvind1.1450
Enkeltall Medvind1.1912
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low607.70.9873
Triple Number Coastal/Long Distance Medium489.61.2254
Triple Number Coastal/Long Distance High440.21.3631
Triple Number Windward/Leeward Low780.80.7684
Triple Number Windward/Leeward Medium598.31.0029
Triple Number Windward/Leeward High526.61.1393
Coastal/Long Distance533.11.1254
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind524.01.1450
Predominantly Downwind503.71.1912
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore513.31.1689
Cape Doctor Coastal429.31.3975
Triple Number Coastal/Long Distance Low607.70.9873
Triple Number Coastal/Long Distance Medium489.61.2254
Triple Number Coastal/Long Distance High440.21.3631
Triple Number Windward/Leeward Low780.80.7684
Triple Number Windward/Leeward Medium598.31.0029
Triple Number Windward/Leeward High526.61.1393
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9873
Triple Number Coastal/Long Distance Medium1.2254
Triple Number Coastal/Long Distance High1.3631
Triple Number Windward/Leeward Low0.7684
Triple Number Windward/Leeward Medium1.0029
Triple Number Windward/Leeward High1.1393
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9873
Triple Number Coastal/Long Distance Medium1.2254
Triple Number Coastal/Long Distance High1.3631
Triple Number Windward/Leeward Low0.7684
Triple Number Windward/Leeward Medium1.0029
Triple Number Windward/Leeward High1.1393
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance533.11.1254
Triple Number Coastal/Long Distance Low607.70.9873
Triple Number Coastal/Long Distance Medium489.61.2254
Triple Number Coastal/Long Distance High440.21.3631
Triple Number Windward/Leeward Low780.80.7684
Triple Number Windward/Leeward Medium598.31.0029
Triple Number Windward/Leeward High526.61.1393
Predominantly Upwind524.01.1450
Predominantly Downwind503.71.1912
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance864.3663.8567.4509.6476.8449.5405.5
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance533.11.1254
Triple Number Coastal/Long Distance Low607.70.9873
Triple Number Coastal/Long Distance Medium489.61.2254
Triple Number Coastal/Long Distance High440.21.3631
Triple Number Windward/Leeward Low780.80.7684
Triple Number Windward/Leeward Medium598.31.0029
Triple Number Windward/Leeward High526.61.1393
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance864.3663.8567.4509.6476.8449.5405.5
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low607.70.9873
Triple Number All Purpose Medium489.61.2254
Triple Number All Purpose High440.21.3631
Triple Number Windward/Leeward Low780.80.7684
Triple Number Windward/Leeward Medium598.31.0029
Triple Number Windward/Leeward High526.61.1393
Predominantly Upwind524.01.1450
Predominantly Downwind503.71.1912
Predominantly Upwind Low653.30.9184
Predominantly Upwind Medium539.71.1117
Predominantly Upwind High513.61.1683
Predominantly Downwind Low687.70.8725
Predominantly Downwind Medium505.91.1859
Predominantly Downwind High419.31.4311
Chicago-Mac Upwind1.1266
Chicago-Mac All Purpose1.1463
Chicago-Mac Downwind1.1700
Bayview-Mac Cove Island1.0850
Bayview-Mac Shore1.0988
Harvest Moon Regatta429.11.3983
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy513.81.1679
San Francisco Bay Medium587.81.0207
Predominantly Reaching467.31.2841
Predominantly Reaching Low555.61.0799
Predominantly Reaching Medium465.31.2896
Predominantly Reaching High412.21.4558
Windward/Leeward 60-40 Low774.60.7746
Windward/Leeward 60-40 Medium610.90.9822
Windward/Leeward 60-40 High554.11.0828
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low847.30.7081
5-Band Low / Medium720.30.8329
5-Band Medium589.01.0187
5-Band Medium / High534.31.1230
5-Band High510.21.1761
ORC Ref  04560002N7QIssued on 30/05/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

UNKNOWN LADY NAI

USA 28380

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassSYDNEY 41Measurement02/04/2002HINPlan reviewHull constructionCoredCarbon RudderNoLight stanchionsNoTrim tabNo
LOA12.450Max. Beam3.749Draft2.766Displacement5,568Wetted area29.21IMS L10.964LSM010.287Acc. length12.184Sink (kg/mm) 21.82
VCGD-0.033VCGM0.037RM Rated (kg·m) 161.4Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.418PBW0.105PIPA0.0032
EDL1.600ST10.038ST20.178
ST30.178ST40.109ST50.165
RIG
Forestay tensionAftInner stayNone FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays1Spreaders3Rotating mastNo
P15.190IG17.112ISP17.175MDT10.130MDL10.223MDT20.118MDL20.160TL2.800MW0.160GO0.205
E5.370J4.840BAS1.785FSD0.037SFJ0.005SPL4.840WPLTPS0.000BD0.192MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered162.7Flotation Date09/10/2010MeasurerComment
SFFP0.905FFMFF1.335LCFcl6.817SG1.0000
SAFP12.000FAMFA1.008LCFsh7.060HBI1.119
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
TANKSIdDescriptionSp.WghtCapacityConditionLCGVCG00.000.00Total deductible
Total deductible
ORC Ref  04560002N7QIssued on 30/05/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

UNKNOWN LADY NAI

USA 28380

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment00.191.142.043.494.5148.73
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment#10.090.961.853.705.607.4717.35NoNo 64.7406/03/20192019 AP#1
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentS216.9516.9516.958.828.53123.7630/06/202211747017.0517.0517.058.648.17121.422017 Small SYM TRIAL
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentC-017.3115.4816.405.937.8975%86.3730/06/2022
ORC Ref  04560002N7QIssued on 30/05/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org