Club Certificate2026
UNKNOWN LADY NAIUSA 28380
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Rated boat velocities in knots
Wind Velocity 4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat Angles45.3°42.3°39.3°37.2°36.6°36.2°36.0°35.9°37.1°
Beat VMG3.144.385.195.555.725.825.905.965.86
52°4.916.597.467.777.908.008.078.138.13
60°5.276.897.677.978.128.218.298.388.41
75°5.567.087.798.178.398.528.658.848.95
90°5.436.977.748.198.548.829.009.369.63
110°4.676.377.498.148.659.119.4910.2410.84
120°4.306.097.358.038.569.119.7310.8911.99
135°3.765.446.777.668.248.799.4211.0613.23
150°3.114.585.846.927.708.238.7510.0711.92
Run VMG2.693.965.056.006.777.407.908.8610.32
Gybe Angles139.7°142.4°147.1°151.4°157.0°164.4°168.7°164.2°147.0°
APH ToD:491.9CDL: 11.129APH ToT: 1.2196CertNo:US2838
BOAT
ClassSYDNEY 41DesignerMURRAYBuilderBASHFORDAge date08/1994Series date08/1994Offset filesydney41.offData fileUS2838
HULL
Length Overall12.518 mMaximum Beam3.750 mDraft2.766 mDisplacement5,577 kgDLR5.1321IMS DivisionPerformanceDynamic Allowance0.000%Age Allowance0.650%RS Assessment-0.203%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.418m
CREW
Maximum weight900 kg(declared)Minimum weight765 kg ✱ when appliedCrew 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 Maximum (m²)
Trysail14.28Storm Jib14.92Heavy Weather Jib40.28
SAIL LIMITS
Headsails6Spinnakers5
✱ Asymmetric may be tacked on the pole
STABILITY
Righting Moment 161.3 kg·m Stability Index 110.9
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  04560004RJB Issued on 28/05/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
UNKNOWN LADY NAIUSA 28380
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Time Allowances in secs/NM
Wind Velocity 4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat VMG1144.7822.3693.8648.9629.2618.5610.5603.6613.9
52°733.8546.4482.3463.4455.6450.2446.1443.0442.8
60°682.5522.4469.6451.6443.5438.5434.0429.5427.9
75°647.7508.3462.2440.7428.9422.4416.0407.0402.2
90°663.1516.8465.0439.6421.4408.2399.9384.5373.8
110°770.9565.4480.5442.1416.1395.4379.5351.7332.1
120°837.7590.7489.5448.0420.5395.0370.2330.6300.2
135°958.1662.1532.1469.7437.1409.5382.3325.5272.0
150°1157.4786.7616.8520.3467.8437.5411.4357.6302.1
Run VMG1336.4908.4712.2600.2531.5486.7455.7406.1348.9
Selected Courses
Windward / Leeward1240.6865.3703.0624.5580.4552.6533.1504.9481.4
All purpose927.6664.6556.6507.1479.4460.8446.0421.4402.1
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward601.70.9972
All purpose491.91.2196
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low610.60.9826
Triple Number Coastal/Long Distance Medium490.41.2235
Triple Number Coastal/Long Distance High440.41.3623
Triple Number Windward/Leeward Low784.20.7651
Triple Number Windward/Leeward Medium598.41.0027
Triple Number Windward/Leeward High527.41.1377
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance533.91.1239
Triple Number Coastal/Long Distance Low610.60.9826
Triple Number Coastal/Long Distance Medium490.41.2235
Triple Number Coastal/Long Distance High440.41.3623
Triple Number Windward/Leeward Low784.20.7651
Triple Number Windward/Leeward Medium598.41.0027
Triple Number Windward/Leeward High527.41.1377
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1250.2869.7664.4567.1510.4478.0450.2403.7383.3
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.9077
Downwind "popa"1.0242
70% up, 30% down "Ilhabela"0.9398
30% up, 70% down "Ilhabela-inverso"0.9862
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low610.60.9826
Triple Number Coastal/Long Distance Medium490.41.2235
Triple Number Coastal/Long Distance High440.41.3623
Triple Number Windward/Leeward Low784.20.7651
Triple Number Windward/Leeward Medium598.41.0027
Triple Number Windward/Leeward High527.41.1377
Predominantly Upwind525.91.1409
Predominantly Downwind503.81.1908
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP510.51.1754 Predom. Rc High398.41.5059 5B SF Bay L/M647.10.9272 TriNum AP Low610.60.9826 Predom. Dn Low762.70.7867 5B SF Bay Med568.71.0550 TriNum AP Med490.51.2234 Predom. Dn L/M567.61.0570 5B SF Bay M/H520.91.1518 TriNum AP High440.41.3623 Predom. Dn Med488.81.2275 5B SF Bay High492.11.2194 TriNum W/L Low822.00.7300 Predom. Dn M/H434.91.3795 5B AP Low679.90.8825 TriNum W/L Med598.41.0027 Predom. Dn High395.51.5171 5B AP L/M543.71.1036 TriNum W/L Hig527.41.1377 ChiMac Up Low637.30.9415 5B AP Med484.51.2384 Predom. Upwind544.01.1029 ChiMac Up Med585.61.0246 5B AP M/H447.11.3419 Predom. Reaching487.31.2314 ChiMac Up High523.51.1462 5B AP High422.31.4208 Predom. Downwind525.21.1423 ChiMac Off Low658.90.9107 5B W/L Low918.60.6532 Predom. Up Low710.70.8443 ChiMac Off Med583.81.0278 5B W/L L/M681.10.8809 Predom. Up L/M562.81.0661 ChiMac Off High492.61.2179 5B W/L Med589.31.0181 Predom. Up Med514.21.1668 ChiMac AP Low644.10.9315 5B W/L M/H535.61.1203 Predom. Up M/H486.71.2327 ChiMac AP Med581.91.0311 5B W/L High505.71.1865 Predom. Up High470.91.2740 ChiMac AP High506.51.1845 W/L 60-40 Low909.00.6601 Predom. Rc Low653.20.9185 BayMac Cove Island738.90.8120 W/L 60-40 L/M682.40.8793 Predom. Rc L/M513.61.1682 BayMac Shore731.10.8207 W/L 60-40 Med598.31.0028 Predom. Rc Med461.31.3007 Harvest Moon434.41.3811 W/L 60-40 M/H550.91.0891 Predom. Rc M/H425.31.4108 5B SF Bay Low769.40.7798 W/L 60-40 High525.91.1410      SA/DSPL Up35.88SA/DSPL Dn54.54
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance533.91.1239
Triple Number Coastal/Long Distance Low610.60.9826
Triple Number Coastal/Long Distance Medium490.41.2235
Triple Number Coastal/Long Distance High440.41.3623
Triple Number Windward/Leeward Low784.20.7651
Triple Number Windward/Leeward Medium598.41.0027
Triple Number Windward/Leeward High527.41.1377
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1250.2869.7664.4567.1510.4478.0450.2403.7383.3
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance533.91.1239
Triple Number Coastal/Long Distance Low610.60.9826
Triple Number Coastal/Long Distance Medium490.41.2235
Triple Number Coastal/Long Distance High440.41.3623
Triple Number Windward/Leeward Low784.20.7651
Triple Number Windward/Leeward Medium598.41.0027
Triple Number Windward/Leeward High527.41.1377
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1250.2869.7664.4567.1510.4478.0450.2403.7383.3
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance533.9
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1250.2869.7664.4567.1510.4478.0450.2403.7383.3
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low610.60.9826
Triple Number Coastal/Long Distance Medium490.41.2235
Triple Number Coastal/Long Distance High440.41.3623
Triple Number Windward/Leeward Low784.20.7651
Triple Number Windward/Leeward Medium598.41.0027
Triple Number Windward/Leeward High527.41.1377
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating533.91.1239
FinRating, kevyt tuuli905.81.1039
FinRating, kova tuuli423.61.1805
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low610.60.9826
Triple Number Coastal/Long Distance Medium490.41.2235
Triple Number Coastal/Long Distance High440.41.3623
Triple Number Windward/Leeward Low784.20.7651
Triple Number Windward/Leeward Medium598.41.0027
Triple Number Windward/Leeward High527.41.1377
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance1.1239
Triple Number Coastal/Long Distance Low0.9826
Triple Number Coastal/Long Distance Medium1.2235
Triple Number Coastal/Long Distance High1.3623
Triple Number Windward/Leeward Low0.7651
Triple Number Windward/Leeward Medium1.0027
Triple Number Windward/Leeward High1.1377
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1250.2869.7664.4567.1510.4478.0450.2403.7383.3
For information
General Purpose Handicap (GPH)547.5
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance533.91.1239
Triple Number Coastal/Long Distance Low610.60.9826
Triple Number Coastal/Long Distance Medium490.41.2235
Triple Number Coastal/Long Distance High440.41.3623
Triple Number Windward/Leeward Low784.20.7651
Triple Number Windward/Leeward Medium598.41.0027
Triple Number Windward/Leeward High527.41.1377
Saronikos S All Purpose544.61.1017
Saronikos S Upwind598.11.0031
Saronikos S Downwind484.01.2396
Saronikos N All Purpose574.41.0445
Saronikos N Upwind618.80.9697
Saronikos N Downwind531.81.1283
Saronikos SW All Purpose542.91.1051
Saronikos SW Upwind605.70.9906
Saronikos SW Downwind489.21.2265
Saronikos NE All Purpose596.91.0053
Saronikos NE Upwind582.01.0310
Saronikos NE Downwind597.11.0049
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1250.2869.7664.4567.1510.4478.0450.2403.7383.3
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low610.60.9826
Triple Number Coastal/Long Distance Medium490.41.2235
Triple Number Coastal/Long Distance High440.41.3623
Triple Number Windward/Leeward Low784.20.7651
Triple Number Windward/Leeward Medium598.41.0027
Triple Number Windward/Leeward High527.41.1377
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose510.51.1754
5-Band All Purpose Low731.70.8200
5-Band All Purpose L/M563.21.0654
5-Band All Purpose Med500.21.1994
5-Band All Purpose M/H460.11.3040
5-Band All Purpose High433.21.3849
Single Number Predominant Upwind524.21.1445
Single Number Predominant Reaching471.81.2717
Single Number Predominant Downwind505.21.1877
5-Band 50-50 Windward/Leeward Low918.60.6532
5-Band 50-50 Windward/Leeward L/M681.10.8809
5-Band 50-50 Windward/Leeward Med589.31.0181
5-Band 50-50 Windward/Leeward M/H535.61.1203
5-Band 50-50 Windward/Leeward High505.71.1865
5-Band 60-40 Windward/Leeward Low909.00.6601
5-Band 60-40 Windward/Leeward L/M682.40.8793
5-Band 60-40 Windward/Leeward Med598.31.0028
5-Band 60-40 Windward/Leeward M/H550.91.0891
5-Band 60-40 Windward/Leeward High525.91.1410
Triple Number 50-50 Windward/Leeward Low822.00.7300
Triple Number 50-50 Windward/Leeward Med598.41.0026
Triple Number 50-50 Windward/Leeward High527.41.1377
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward610.10.9834
Triple Number 60-40 Windward/Leeward Low816.00.7353
Triple Number 60-40 Windward/Leeward Med606.50.9894
Triple Number 60-40 Windward/Leeward High543.91.1032
Triple Number All-Purpose Low662.20.9061
Triple Number All-Purpose Med506.61.1845
Triple Number All-Purpose High452.91.3247
Triple Number Predominant Upwind Low656.10.9145
Triple Number Predominant Upwind Med520.71.1523
Triple Number Predominant Upwind High487.21.2315
Triple Number Predominant Reaching Low598.71.0021
Triple Number Predominant Reaching Med473.81.2664
Triple Number Predominant Reaching High410.81.4606
Triple Number Predominant Downwind Low681.30.8806
Triple Number Predominant Downwind Med498.41.2039
Triple Number Predominant Downwind High416.61.4402
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance533.91.1239
Triple Number Coastal/Long Distance Low610.60.9826
Triple Number Coastal/Long Distance Medium490.41.2235
Triple Number Coastal/Long Distance High440.41.3623
Triple Number Windward/Leeward Low784.20.7651
Triple Number Windward/Leeward Medium598.41.0027
Triple Number Windward/Leeward High527.41.1377
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1250.2869.7664.4567.1510.4478.0450.2403.7383.3
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance533.91.1239
Triple Number Coastal/Long Distance Low610.60.9826
Triple Number Coastal/Long Distance Medium490.41.2235
Triple Number Coastal/Long Distance High440.41.3623
Triple Number Windward/Leeward Low784.20.7651
Triple Number Windward/Leeward Medium598.41.0027
Triple Number Windward/Leeward High527.41.1377
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1250.2869.7664.4567.1510.4478.0450.2403.7383.3
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low610.6
Triple Number Coastal/Long Distance Medium490.4
Triple Number Coastal/Long Distance High440.4
Triple Number Windward/Leeward Low784.2
Triple Number Windward/Leeward Medium598.4
Triple Number Windward/Leeward High527.4
Predominantly Upwind525.9
Predominantly Downwind503.8
Predominantly Reaching480.8
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance533.91.1239
Triple Number Coastal/Long Distance Low610.60.9826
Triple Number Coastal/Long Distance Medium490.41.2235
Triple Number Coastal/Long Distance High440.41.3623
Triple Number Windward/Leeward Low784.20.7651
Triple Number Windward/Leeward Medium598.41.0027
Triple Number Windward/Leeward High527.41.1377
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1250.2869.7664.4567.1510.4478.0450.2403.7383.3
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.9826
Triple Number Coastal/Long Distance Medium1.2235
Triple Number Coastal/Long Distance High1.3623
Triple Number Windward/Leeward Low0.7651
Triple Number Windward/Leeward Medium1.0027
Triple Number Windward/Leeward High1.1377
Coastal/Long Distance1.1239
Predominantly Upwind1.1409
Predominantly Downwind1.1908
For information
General Purpose Handicap (GPH)547.5
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)1.2196
Distanseseilas Trippeltall svak vind0.9826
Distanseseilas Trippeltall mellomvind1.2235
Distanseseilas Trippeltall sterk vind1.3623
Pølsebane Trippeltall svak vind0.7651
Pølsebane Trippeltall mellomvind1.0027
Pølsebane Trippeltall sterk vind1.1377
Motvind Singeltall1.1409
Medvind Singeltall1.1908
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low610.60.9826
Triple Number Coastal/Long Distance Medium490.41.2235
Triple Number Coastal/Long Distance High440.41.3623
Triple Number Windward/Leeward Low784.20.7651
Triple Number Windward/Leeward Medium598.41.0027
Triple Number Windward/Leeward High527.41.1377
Coastal/Long Distance533.91.1239
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind525.91.1409
Predominantly Downwind503.81.1908
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore488.41.2284
Cape Doctor Coastal407.91.4710
Triple Number Coastal/Long Distance Low610.60.9826
Triple Number Coastal/Long Distance Medium490.41.2235
Triple Number Coastal/Long Distance High440.41.3623
Triple Number Windward/Leeward Low784.20.7651
Triple Number Windward/Leeward Medium598.41.0027
Triple Number Windward/Leeward High527.41.1377
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.9826
Triple Number Coastal/Long Distance Medium1.2235
Triple Number Coastal/Long Distance High1.3623
Triple Number Windward/Leeward Low0.7651
Triple Number Windward/Leeward Medium1.0027
Triple Number Windward/Leeward High1.1377
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.9826
Triple Number Coastal/Long Distance Medium1.2235
Triple Number Coastal/Long Distance High1.3623
Triple Number Windward/Leeward Low0.7651
Triple Number Windward/Leeward Medium1.0027
Triple Number Windward/Leeward High1.1377
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance533.91.1239
Triple Number Coastal/Long Distance Low610.60.9826
Triple Number Coastal/Long Distance Medium490.41.2235
Triple Number Coastal/Long Distance High440.41.3623
Triple Number Windward/Leeward Low784.20.7651
Triple Number Windward/Leeward Medium598.41.0027
Triple Number Windward/Leeward High527.41.1377
Predominantly Upwind525.91.1409
Predominantly Downwind503.81.1908
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1250.2869.7664.4567.1510.4478.0450.2403.7383.3
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance533.91.1239
Triple Number Coastal/Long Distance Low610.60.9826
Triple Number Coastal/Long Distance Medium490.41.2235
Triple Number Coastal/Long Distance High440.41.3623
Triple Number Windward/Leeward Low784.20.7651
Triple Number Windward/Leeward Medium598.41.0027
Triple Number Windward/Leeward High527.41.1377
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1250.2869.7664.4567.1510.4478.0450.2403.7383.3
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP510.51.1754 Predom. Dn High395.51.5171 5B AP M/H447.11.3419 TriNum AP Low610.60.9826 Predom. Rc Low653.20.9185 5B AP High422.31.4208 TriNum AP Med490.51.2234 Predom. Rc L/M513.61.1682 5B SF Bay Low769.40.7798 TriNum AP High440.41.3623 Predom. Rc Med461.31.3007 5B SF Bay L/M647.10.9272 TriNum W/L Low822.00.7300 Predom. Rc M/H425.31.4108 5B SF Bay Med568.71.0550 TriNum W/L Med598.41.0027 Predom. Rc High398.41.5059 5B SF Bay M/H520.91.1518 TriNum W/L Hig527.41.1377 5B W/L Low918.60.6532 5B SF Bay High492.11.2194 Predom. Upwind544.01.1029 5B W/L L/M681.10.8809 ChiMac Up Low637.30.9415 Predom. Reaching487.31.2314 5B W/L Med589.31.0181 ChiMac Up Med585.61.0246 Predom. Downwind525.21.1423 5B W/L M/H535.61.1203 ChiMac Up High523.51.1462 Predom. Up Low710.70.8443 5B W/L High505.71.1865 ChiMac Off Low658.90.9107 Predom. Up L/M562.81.0661 W/L 60-40 Low909.00.6601 ChiMac Off Med583.81.0278 Predom. Up Med514.21.1668 W/L 60-40 L/M682.40.8793 ChiMac Off High492.61.2179 Predom. Up M/H486.71.2327 W/L 60-40 Med598.31.0028 ChiMac AP Low644.10.9315 Predom. Up High470.91.2740 W/L 60-40 M/H550.91.0891 ChiMac AP Med581.91.0311 Predom. Dn Low762.70.7867 W/L 60-40 High525.91.1410 ChiMac AP High506.51.1845 Predom. Dn L/M567.61.0570 5B AP Low679.90.8825 BayMac Cove Island738.90.8120 Predom. Dn Med488.81.2275 5B AP L/M543.71.1036 BayMac Shore731.10.8207 Predom. Dn M/H434.91.3795 5B AP Med484.51.2384 Harvest Moon434.41.3811      SA/DSPL Up35.88SA/DSPL Dn54.54
ORC Ref  04560004RJB Issued on 28/05/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
UNKNOWN LADY NAIUSA 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
Length overall12.518Maximum beam3.750Draft2.766Displacement5,577Wetted area28.33IMS L10.993LSM010.280Accomod. length12.188Sink (kg/mm) 21.89
VCGD-0.019VCGM0.051 RM Rated (kg·m) 161.3Limit of positive stability(°) 111.7 Stability Index 110.9 BLR index 0.0000Default crew weight716 Declared crew weight 900
Centerboard weight0.0List angle0.0Canting keel angle0.0
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.418PBW0.105PIPA0.0032
EDL1.600ST10.038ST20.178
ST30.178ST40.109ST50.165
RIG
BackstayAdjustableForestayFixedInner forestayNot installedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysNoCheckstaysYesSpreaders3Rotating mastNo
P15.190IG17.112ISP17.175MDT10.130MDL10.223MDT20.118MDL20.160TL2.800MW0.160GO0.205
E5.370J4.840BAS1.785FSD0.037SFJ0.005SPL4.840WPLTPS0.000BD0.192MWTMCG
PY0.000MDT1Y0.000MDL1Y0.000MDT2Y0.000MDL2Y0.000TLY0.000BASY0.000EY0.000BDY0.000IY0.000EB0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered162.7Flotation Date09/10/2010
SFFP0.905FFM1.320FF1.335LCFcl6.819SG1.0000
SAFP12.000FAM0.999FA1.008LCFsh7.061HBI1.119
INVENTORY
Fixed Ballast Total0
TANKSIdDescriptionSp.WghtCapacityConditionLCGVCG00.000.00Total deductible
Total deductible
ORC Ref  04560004RJB Issued on 28/05/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
UNKNOWN LADY NAIUSA 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
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
ORC Ref  04560004RJB Issued on 28/05/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org