Club Certificate2026
CHEWBACCAUSA 42250
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°39.7°37.5°36.8°36.3°36.0°35.6°36.0°
Beat VMG3.194.395.235.715.946.076.156.276.28
52°4.986.627.578.028.248.378.458.588.63
60°5.356.937.788.218.458.598.688.858.94
75°5.647.147.928.368.668.899.079.339.54
90°5.537.017.868.378.739.059.359.8310.10
110°4.806.507.738.438.939.399.8010.3210.71
120°4.546.347.608.348.879.409.9410.8411.62
135°4.015.707.007.898.499.019.5910.7412.64
150°3.314.786.007.047.858.438.9310.0411.29
Run VMG2.864.145.196.116.897.548.089.0110.01
Gybe Angles138.5°142.0°146.0°151.6°156.6°162.4°167.5°166.9°167.3°
APH ToD:477.8CDL: 12.073APH ToT: 1.2556CertNo:US6819
BOAT
ClassNELSON MAREK 50 CUSTOM FILEDesignerNELSON/MAREKBuilderKiwiAge date02/1987Series date01/1987Offset fileNELSONMAREK50-USA42250.offData fileUS6819
HULL
Length Overall15.127 mMaximum Beam4.542 mDraft2.749 mDisplacement10,313 kgDLR7.0992IMS DivisionPerformanceDynamic Allowance0.000%Age Allowance0.650%RS Assessment-0.331%
PROPELLER
InstallationShaft exposedTypeFeathering 2 bladesDiameter0.522m
CREW
Maximum weight1,050 kg(declared)Minimum weight893 kg ✱ when appliedCrew Arm Extension0.00 m
SAIL AREAS (m²)
MeasuredRatedMainsail65.4166.63Headsail Luffed90.3390.33Headsail FlyingSymmetric176.43176.43Asymmetric170.37170.37 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS Maximum (m²)
Trysail19.19Storm Jib21.02Heavy Weather Jib56.74
SAIL LIMITS
Headsails7Spinnakers5
✱ Asymmetric may be tacked on the pole
STABILITY
Righting Moment 347.8 kg·m Stability Index 123.4
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  04560004U5M Issued on 25/06/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
CHEWBACCAUSA 42250
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 VMG1127.2819.3688.2630.7606.2592.9585.0574.6573.5
52°722.7544.2475.6448.7436.7430.0426.0419.7417.0
60°672.6519.6462.5438.3426.0419.0414.6407.0402.9
75°638.1504.5454.6430.5415.7405.1397.0385.7377.5
90°651.4513.4458.1430.2412.2397.6384.9366.3356.3
110°750.4553.4465.8427.0403.3383.3367.3348.8336.2
120°793.1568.0473.6431.9406.0382.8362.2332.2309.7
135°897.4631.1514.2456.3424.1399.5375.5335.0284.7
150°1088.5752.9600.4511.1458.5427.0403.3358.6318.8
Run VMG1256.9869.3693.3589.5522.1477.6445.4399.6359.8
Selected Courses
Windward / Leeward1192.0844.3690.7610.1564.2535.2515.2487.1466.6
All purpose895.1650.4545.6493.9464.8445.3430.6408.3391.0
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward585.51.0248
All purpose477.81.2556
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low598.01.0034
Triple Number Coastal/Long Distance Medium476.31.2596
Triple Number Coastal/Long Distance High425.91.4087
Triple Number Windward/Leeward Low767.60.7817
Triple Number Windward/Leeward Medium582.81.0295
Triple Number Windward/Leeward High509.71.1772
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance519.41.1553
Triple Number Coastal/Long Distance Low598.01.0034
Triple Number Coastal/Long Distance Medium476.31.2596
Triple Number Coastal/Long Distance High425.91.4087
Triple Number Windward/Leeward Low767.60.7817
Triple Number Windward/Leeward Medium582.81.0295
Triple Number Windward/Leeward High509.71.1772
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1198.5846.8652.3553.2495.0462.0435.1391.3374.6
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.9340
Downwind "popa"1.0508
70% up, 30% down "Ilhabela"0.9662
30% up, 70% down "Ilhabela-inverso"1.0128
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low598.01.0034
Triple Number Coastal/Long Distance Medium476.31.2596
Triple Number Coastal/Long Distance High425.91.4087
Triple Number Windward/Leeward Low767.60.7817
Triple Number Windward/Leeward Medium582.81.0295
Triple Number Windward/Leeward High509.71.1772
Predominantly Upwind510.81.1746
Predominantly Downwind491.11.2218
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP495.71.2104 Predom. Rc High386.91.5508 5B SF Bay L/M632.70.9483 TriNum AP Low598.01.0034 Predom. Dn Low734.40.8169 5B SF Bay Med552.51.0860 TriNum AP Med476.41.2594 Predom. Dn L/M552.81.0854 5B SF Bay M/H503.81.1911 TriNum AP High425.91.4087 Predom. Dn Med476.21.2601 5B SF Bay High476.31.2598 TriNum W/L Low801.90.7482 Predom. Dn M/H423.81.4159 5B AP Low660.90.9079 TriNum W/L Med582.81.0295 Predom. Dn High389.01.5422 5B AP L/M530.91.1302 TriNum W/L Hig509.71.1772 ChiMac Up Low623.60.9622 5B AP Med470.21.2760 Predom. Upwind527.71.1370 ChiMac Up Med570.31.0520 5B AP M/H432.21.3882 Predom. Reaching473.71.2666 ChiMac Up High507.41.1825 5B AP High409.21.4663 Predom. Downwind510.61.1750 ChiMac Off Low637.40.9414 5B W/L Low892.80.6720 Predom. Up Low698.10.8595 ChiMac Off Med566.21.0597 5B W/L L/M666.20.9006 Predom. Up L/M550.81.0894 ChiMac Off High480.61.2485 5B W/L Med573.41.0464 Predom. Up Med497.71.2054 ChiMac AP Low627.00.9569 5B W/L M/H517.91.1584 Predom. Up M/H468.01.2821 ChiMac AP Med565.81.0604 5B W/L High488.41.2285 Predom. Up High451.21.3299 ChiMac AP High492.51.2182 W/L 60-40 Low887.00.6765 Predom. Rc Low635.90.9436 BayMac Cove Island716.30.8376 W/L 60-40 L/M668.00.8982 Predom. Rc L/M501.51.1964 BayMac Shore709.30.8460 W/L 60-40 Med581.31.0321 Predom. Rc Med448.41.3381 Harvest Moon423.01.4185 W/L 60-40 M/H531.61.1286 Predom. Rc M/H411.91.4566 5B SF Bay Low753.20.7966 W/L 60-40 High506.01.1858      SA/DSPL Up32.62SA/DSPL Dn50.65
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance519.41.1553
Triple Number Coastal/Long Distance Low598.01.0034
Triple Number Coastal/Long Distance Medium476.31.2596
Triple Number Coastal/Long Distance High425.91.4087
Triple Number Windward/Leeward Low767.60.7817
Triple Number Windward/Leeward Medium582.81.0295
Triple Number Windward/Leeward High509.71.1772
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1198.5846.8652.3553.2495.0462.0435.1391.3374.6
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance519.41.1553
Triple Number Coastal/Long Distance Low598.01.0034
Triple Number Coastal/Long Distance Medium476.31.2596
Triple Number Coastal/Long Distance High425.91.4087
Triple Number Windward/Leeward Low767.60.7817
Triple Number Windward/Leeward Medium582.81.0295
Triple Number Windward/Leeward High509.71.1772
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1198.5846.8652.3553.2495.0462.0435.1391.3374.6
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance519.4
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1198.5846.8652.3553.2495.0462.0435.1391.3374.6
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low598.01.0034
Triple Number Coastal/Long Distance Medium476.31.2596
Triple Number Coastal/Long Distance High425.91.4087
Triple Number Windward/Leeward Low767.60.7817
Triple Number Windward/Leeward Medium582.81.0295
Triple Number Windward/Leeward High509.71.1772
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating519.41.1553
FinRating, kevyt tuuli878.21.1387
FinRating, kova tuuli411.01.2165
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low598.01.0034
Triple Number Coastal/Long Distance Medium476.31.2596
Triple Number Coastal/Long Distance High425.91.4087
Triple Number Windward/Leeward Low767.60.7817
Triple Number Windward/Leeward Medium582.81.0295
Triple Number Windward/Leeward High509.71.1772
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance1.1553
Triple Number Coastal/Long Distance Low1.0034
Triple Number Coastal/Long Distance Medium1.2596
Triple Number Coastal/Long Distance High1.4087
Triple Number Windward/Leeward Low0.7817
Triple Number Windward/Leeward Medium1.0295
Triple Number Windward/Leeward High1.1772
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1198.5846.8652.3553.2495.0462.0435.1391.3374.6
For information
General Purpose Handicap (GPH)532.7
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance519.41.1553
Triple Number Coastal/Long Distance Low598.01.0034
Triple Number Coastal/Long Distance Medium476.31.2596
Triple Number Coastal/Long Distance High425.91.4087
Triple Number Windward/Leeward Low767.60.7817
Triple Number Windward/Leeward Medium582.81.0295
Triple Number Windward/Leeward High509.71.1772
Saronikos S All Purpose533.21.1252
Saronikos S Upwind585.11.0255
Saronikos S Downwind473.41.2675
Saronikos N All Purpose558.51.0742
Saronikos N Upwind605.40.9910
Saronikos N Downwind515.91.1629
Saronikos SW All Purpose533.61.1245
Saronikos SW Upwind595.91.0069
Saronikos SW Downwind477.11.2576
Saronikos NE All Purpose578.51.0372
Saronikos NE Upwind568.81.0549
Saronikos NE Downwind575.61.0424
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1198.5846.8652.3553.2495.0462.0435.1391.3374.6
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low598.01.0034
Triple Number Coastal/Long Distance Medium476.31.2596
Triple Number Coastal/Long Distance High425.91.4087
Triple Number Windward/Leeward Low767.60.7817
Triple Number Windward/Leeward Medium582.81.0295
Triple Number Windward/Leeward High509.71.1772
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose495.71.2104
5-Band All Purpose Low712.00.8427
5-Band All Purpose L/M550.11.0908
5-Band All Purpose Med486.01.2347
5-Band All Purpose M/H445.11.3480
5-Band All Purpose High419.71.4297
Single Number Predominant Upwind509.41.1779
Single Number Predominant Reaching459.21.3066
Single Number Predominant Downwind492.11.2193
5-Band 50-50 Windward/Leeward Low892.80.6720
5-Band 50-50 Windward/Leeward L/M666.20.9006
5-Band 50-50 Windward/Leeward Med573.41.0464
5-Band 50-50 Windward/Leeward M/H517.91.1584
5-Band 50-50 Windward/Leeward High488.41.2285
5-Band 60-40 Windward/Leeward Low887.00.6765
5-Band 60-40 Windward/Leeward L/M668.00.8982
5-Band 60-40 Windward/Leeward Med581.31.0321
5-Band 60-40 Windward/Leeward M/H531.61.1286
5-Band 60-40 Windward/Leeward High506.01.1858
Triple Number 50-50 Windward/Leeward Low801.90.7482
Triple Number 50-50 Windward/Leeward Med582.91.0294
Triple Number 50-50 Windward/Leeward High509.71.1772
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward593.11.0116
Triple Number 60-40 Windward/Leeward Low798.60.7513
Triple Number 60-40 Windward/Leeward Med589.91.0172
Triple Number 60-40 Windward/Leeward High524.31.1443
Triple Number All-Purpose Low646.20.9285
Triple Number All-Purpose Med492.51.2182
Triple Number All-Purpose High438.31.3690
Triple Number Predominant Upwind Low643.90.9318
Triple Number Predominant Upwind Med504.81.1885
Triple Number Predominant Upwind High467.21.2842
Triple Number Predominant Reaching Low584.51.0266
Triple Number Predominant Reaching Med460.81.3022
Triple Number Predominant Reaching High398.21.5067
Triple Number Predominant Downwind Low659.50.9098
Triple Number Predominant Downwind Med486.01.2345
Triple Number Predominant Downwind High407.71.4718
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance519.41.1553
Triple Number Coastal/Long Distance Low598.01.0034
Triple Number Coastal/Long Distance Medium476.31.2596
Triple Number Coastal/Long Distance High425.91.4087
Triple Number Windward/Leeward Low767.60.7817
Triple Number Windward/Leeward Medium582.81.0295
Triple Number Windward/Leeward High509.71.1772
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1198.5846.8652.3553.2495.0462.0435.1391.3374.6
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance519.41.1553
Triple Number Coastal/Long Distance Low598.01.0034
Triple Number Coastal/Long Distance Medium476.31.2596
Triple Number Coastal/Long Distance High425.91.4087
Triple Number Windward/Leeward Low767.60.7817
Triple Number Windward/Leeward Medium582.81.0295
Triple Number Windward/Leeward High509.71.1772
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1198.5846.8652.3553.2495.0462.0435.1391.3374.6
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low598.0
Triple Number Coastal/Long Distance Medium476.3
Triple Number Coastal/Long Distance High425.9
Triple Number Windward/Leeward Low767.6
Triple Number Windward/Leeward Medium582.8
Triple Number Windward/Leeward High509.7
Predominantly Upwind510.8
Predominantly Downwind491.1
Predominantly Reaching468.3
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance519.41.1553
Triple Number Coastal/Long Distance Low598.01.0034
Triple Number Coastal/Long Distance Medium476.31.2596
Triple Number Coastal/Long Distance High425.91.4087
Triple Number Windward/Leeward Low767.60.7817
Triple Number Windward/Leeward Medium582.81.0295
Triple Number Windward/Leeward High509.71.1772
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1198.5846.8652.3553.2495.0462.0435.1391.3374.6
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low1.0034
Triple Number Coastal/Long Distance Medium1.2596
Triple Number Coastal/Long Distance High1.4087
Triple Number Windward/Leeward Low0.7817
Triple Number Windward/Leeward Medium1.0295
Triple Number Windward/Leeward High1.1772
Coastal/Long Distance1.1553
Predominantly Upwind1.1746
Predominantly Downwind1.2218
For information
General Purpose Handicap (GPH)532.7
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)1.2556
Distanseseilas Trippeltall svak vind1.0034
Distanseseilas Trippeltall mellomvind1.2596
Distanseseilas Trippeltall sterk vind1.4087
Pølsebane Trippeltall svak vind0.7817
Pølsebane Trippeltall mellomvind1.0295
Pølsebane Trippeltall sterk vind1.1772
Motvind Singeltall1.1746
Medvind Singeltall1.2218
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low598.01.0034
Triple Number Coastal/Long Distance Medium476.31.2596
Triple Number Coastal/Long Distance High425.91.4087
Triple Number Windward/Leeward Low767.60.7817
Triple Number Windward/Leeward Medium582.81.0295
Triple Number Windward/Leeward High509.71.1772
Coastal/Long Distance519.41.1553
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind510.81.1746
Predominantly Downwind491.11.2218
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore472.81.2691
Cape Doctor Coastal396.21.5144
Triple Number Coastal/Long Distance Low598.01.0034
Triple Number Coastal/Long Distance Medium476.31.2596
Triple Number Coastal/Long Distance High425.91.4087
Triple Number Windward/Leeward Low767.60.7817
Triple Number Windward/Leeward Medium582.81.0295
Triple Number Windward/Leeward High509.71.1772
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low1.0034
Triple Number Coastal/Long Distance Medium1.2596
Triple Number Coastal/Long Distance High1.4087
Triple Number Windward/Leeward Low0.7817
Triple Number Windward/Leeward Medium1.0295
Triple Number Windward/Leeward High1.1772
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low1.0034
Triple Number Coastal/Long Distance Medium1.2596
Triple Number Coastal/Long Distance High1.4087
Triple Number Windward/Leeward Low0.7817
Triple Number Windward/Leeward Medium1.0295
Triple Number Windward/Leeward High1.1772
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance519.41.1553
Triple Number Coastal/Long Distance Low598.01.0034
Triple Number Coastal/Long Distance Medium476.31.2596
Triple Number Coastal/Long Distance High425.91.4087
Triple Number Windward/Leeward Low767.60.7817
Triple Number Windward/Leeward Medium582.81.0295
Triple Number Windward/Leeward High509.71.1772
Predominantly Upwind510.81.1746
Predominantly Downwind491.11.2218
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1198.5846.8652.3553.2495.0462.0435.1391.3374.6
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance519.41.1553
Triple Number Coastal/Long Distance Low598.01.0034
Triple Number Coastal/Long Distance Medium476.31.2596
Triple Number Coastal/Long Distance High425.91.4087
Triple Number Windward/Leeward Low767.60.7817
Triple Number Windward/Leeward Medium582.81.0295
Triple Number Windward/Leeward High509.71.1772
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1198.5846.8652.3553.2495.0462.0435.1391.3374.6
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP495.71.2104 Predom. Dn High389.01.5422 5B AP M/H432.21.3882 TriNum AP Low598.01.0034 Predom. Rc Low635.90.9436 5B AP High409.21.4663 TriNum AP Med476.41.2594 Predom. Rc L/M501.51.1964 5B SF Bay Low753.20.7966 TriNum AP High425.91.4087 Predom. Rc Med448.41.3381 5B SF Bay L/M632.70.9483 TriNum W/L Low801.90.7482 Predom. Rc M/H411.91.4566 5B SF Bay Med552.51.0860 TriNum W/L Med582.81.0295 Predom. Rc High386.91.5508 5B SF Bay M/H503.81.1911 TriNum W/L Hig509.71.1772 5B W/L Low892.80.6720 5B SF Bay High476.31.2598 Predom. Upwind527.71.1370 5B W/L L/M666.20.9006 ChiMac Up Low623.60.9622 Predom. Reaching473.71.2666 5B W/L Med573.41.0464 ChiMac Up Med570.31.0520 Predom. Downwind510.61.1750 5B W/L M/H517.91.1584 ChiMac Up High507.41.1825 Predom. Up Low698.10.8595 5B W/L High488.41.2285 ChiMac Off Low637.40.9414 Predom. Up L/M550.81.0894 W/L 60-40 Low887.00.6765 ChiMac Off Med566.21.0597 Predom. Up Med497.71.2054 W/L 60-40 L/M668.00.8982 ChiMac Off High480.61.2485 Predom. Up M/H468.01.2821 W/L 60-40 Med581.31.0321 ChiMac AP Low627.00.9569 Predom. Up High451.21.3299 W/L 60-40 M/H531.61.1286 ChiMac AP Med565.81.0604 Predom. Dn Low734.40.8169 W/L 60-40 High506.01.1858 ChiMac AP High492.51.2182 Predom. Dn L/M552.81.0854 5B AP Low660.90.9079 BayMac Cove Island716.30.8376 Predom. Dn Med476.21.2601 5B AP L/M530.91.1302 BayMac Shore709.30.8460 Predom. Dn M/H423.81.4159 5B AP Med470.21.2760 Harvest Moon423.01.4185      SA/DSPL Up32.62SA/DSPL Dn50.65
ORC Ref  04560004U5M Issued on 25/06/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
CHEWBACCAUSA 42250
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassNELSON MAREK 50 CUSTOM FILEMeasurement02/06/1992HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall15.127Maximum beam4.542Draft2.749Displacement10,313Wetted area38.44IMS L12.009LSM011.324Accomod. length14.761Sink (kg/mm) 28.95
VCGD-0.251VCGM-0.226 RM Rated (kg·m) 347.8Limit of positive stability(°) 121.9 Stability Index 123.4 BLR index 0.0000Default crew weight822 Declared crew weight 1,050
Centerboard weight0.0List angle0.0Canting keel angle0.0
PROPELLER
Propeller TypeFeathering 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.522PBW0.153PIPA0.0060
PSD0.031PHD0.058PHL0.153
PSA24.0°ESL1.015
ST10.031ST20.110ST30.122
ST40.052ST50.327
RIG
BackstayAdjustableForestayFixedInner forestayNot installedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysYesCheckstaysYesSpreaders4Rotating mastNo
P18.145IG20.349ISP20.465MDT10.129MDL10.232MDT20.122MDL20.199TL3.378MW0.189GO0.232
E6.042J5.816BAS2.040FSD0.021SFJ0.241SPL5.864WPLTPS0.000BD0.266MWT0.00MCG0.000
PY0.000MDT1Y0.000MDL1Y0.000MDT2Y0.000MDL2Y0.000TLY0.000BASY0.000EY0.000BDY0.000IY0.000EB0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered352.2Flotation Date02/06/2003
SFFP1.128FFM1.390FF1.407LCFcl7.901SG1.0000
SAFP13.335FAM1.113FA1.125LCFsh8.221HBI1.240
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  04560004U5M Issued on 25/06/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
CHEWBACCAUSA 42250
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentMain0.191.282.283.925.0865.4117/02/2026165366 IHC
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentL/M Genoa0.081.102.174.366.608.8720.52NoNo 90.3317/02/2026165365 IHC#2 Genoa0.080.851.783.926.278.6920.30NoNo 83.3418/02/2026165364 IHCSpin SS0.080.811.613.104.515.0619.54NoInner 56.7006/05/2024OUS156390-004
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentORC20.2420.2420.2410.4610.46176.43* Copied from legacy *S2+20.2420.2420.2410.339.84172.5806/05/2024OUS156390-002
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentA3-120.7618.6719.7210.0211.7785%170.3726/02/2026165378 IHC
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
ORC Ref  04560004U5M Issued on 25/06/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org