Double HandedInternational Certificate2026
THIN MANUSA 24
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 Angles45.8°42.6°40.8°39.4°38.6°38.4°38.9°39.6°41.9°
Beat VMG2.463.484.224.674.874.954.994.994.82
52°3.855.286.226.726.937.037.087.137.07
60°4.135.556.456.907.137.237.307.367.32
75°4.355.816.677.057.327.517.647.787.83
90°4.556.086.917.307.537.697.888.248.46
110°4.416.087.027.507.808.148.519.149.52
120°4.275.996.997.527.968.388.729.7210.73
135°3.805.376.597.277.788.328.9710.6112.00
150°3.154.535.686.627.267.708.179.4512.11
Run VMG2.733.934.925.736.336.737.118.1810.49
Gybe Angles139.5°143.1°147.6°149.8°153.8°157.3°155.9°144.8°144.6°
APH ToD:553.2CDL: 8.555APH ToT: 1.0846CertNo:US6938
BOAT
ClassJ 99DesignerJ BoatsBuilderJ CompositesAge date09/2019Series date04/2018Offset filej99-LK.offData fileUS6938
HULL
Length Overall9.950 mMaximum Beam3.410 mDraft2.001 mDisplacement4,017 kgDLR6.0167IMS DivisionCruiser/RacerDynamic Allowance0.190%Age Allowance0.260%RS Assessment-0.127%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.371m
CREW
Maximum weight170 kg(default)Minimum weight120 kg ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail33.2133.87Headsail Luffed26.6826.68Headsail FlyingSymmetricAsymmetric112.63112.63 (1 asymmetric(s) with SHW/SFL < 85%)
STORM SAIL AREAS Maximum (m²)
Trysail9.72Storm Jib8.84Heavy Weather Jib23.86
SAIL LIMITS
Headsails5Spinnakers4
STABILITY
Righting Moment 103.7 kg·m Stability Index 120.7
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  04560004Q3B Issued on 15/05/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Double HandedInternational Certificate2026
THIN MANUSA 24
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 VMG1465.61034.3853.1770.7739.4727.0721.2721.7747.6
52°935.5681.8578.7536.0519.2512.2508.3505.2509.0
60°871.3648.3558.5521.5505.2497.6493.1488.9491.8
75°828.1619.2539.6510.3491.5479.2471.5462.8459.8
90°790.6592.5520.8492.8478.1468.0457.1437.1425.6
110°815.8591.7512.5480.2461.7442.1423.2393.8378.1
120°842.1600.9515.0478.9452.0429.7412.8370.5335.6
135°946.7669.9546.6494.9462.7432.7401.3339.3300.0
150°1144.0794.1634.1543.9496.0467.3440.6381.1297.3
Run VMG1321.0917.0732.2628.1568.7534.9506.6440.1343.3
Selected Courses
Windward / Leeward1393.3975.7792.6699.4654.0631.0613.9580.9545.5
All purpose1051.8750.6625.4567.0537.9519.8505.0478.3457.3
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward680.80.8814
All purpose553.21.0846
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low688.00.8721
Triple Number Coastal/Long Distance Medium550.41.0902
Triple Number Coastal/Long Distance High498.71.2032
Triple Number Windward/Leeward Low884.20.6786
Triple Number Windward/Leeward Medium674.90.8890
Triple Number Windward/Leeward High605.80.9904
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance600.50.9991
Triple Number Coastal/Long Distance Low688.00.8721
Triple Number Coastal/Long Distance Medium550.41.0902
Triple Number Coastal/Long Distance High498.71.2032
Triple Number Windward/Leeward Low884.20.6786
Triple Number Windward/Leeward Medium674.90.8890
Triple Number Windward/Leeward High605.80.9904
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1386.1969.8745.5633.9572.9539.5510.8456.6430.8
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.7544
Downwind "popa"0.9706
70% up, 30% down "Ilhabela"0.8084
30% up, 70% down "Ilhabela-inverso"0.8937
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low688.00.8721
Triple Number Coastal/Long Distance Medium550.41.0902
Triple Number Coastal/Long Distance High498.71.2032
Triple Number Windward/Leeward Low884.20.6786
Triple Number Windward/Leeward Medium674.90.8890
Triple Number Windward/Leeward High605.80.9904
Predominantly Upwind604.20.9930
Predominantly Downwind549.01.0928
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP574.01.0453 Predom. Rc High446.81.3429 5B SF Bay L/M732.10.8195 TriNum AP Low688.00.8721 Predom. Dn Low812.30.7387 5B SF Bay Med643.20.9328 TriNum AP Med550.41.0901 Predom. Dn L/M611.80.9807 5B SF Bay M/H595.81.0071 TriNum AP High498.71.2032 Predom. Dn Med534.01.1237 5B SF Bay High565.31.0614 TriNum W/L Low925.70.6481 Predom. Dn M/H480.71.2482 5B AP Low756.30.7934 TriNum W/L Med674.90.8890 Predom. Dn High435.41.3780 5B AP L/M610.40.9830 TriNum W/L Hig605.80.9904 ChiMac Up Low748.10.8020 5B AP Med544.21.1025 Predom. Upwind629.00.9539 ChiMac Up Med681.30.8807 5B AP M/H505.81.1863 Predom. Reaching543.81.1033 ChiMac Up High603.60.9940 5B AP High479.31.2519 Predom. Downwind570.61.0516 ChiMac Off Low706.30.8495 5B W/L Low1034.30.5801 Predom. Up Low844.90.7102 ChiMac Off Med630.10.9522 5B W/L L/M766.30.7830 Predom. Up L/M652.60.9194 ChiMac Off High536.91.1175 5B W/L Med665.90.9010 Predom. Up Med588.31.0199 ChiMac AP Low723.60.8292 5B W/L M/H614.60.9763 Predom. Up M/H558.01.0753 ChiMac AP Med653.30.9184 5B W/L High580.51.0336 Predom. Up High542.91.1052 ChiMac AP High569.11.0543 W/L 60-40 Low1046.80.5732 Predom. Rc Low730.50.8214 BayMac Cove Island830.40.7225 W/L 60-40 L/M779.80.7694 Predom. Rc L/M570.51.0517 BayMac Shore824.30.7279 W/L 60-40 Med682.80.8787 Predom. Rc Med513.81.1677 Harvest Moon484.01.2397 W/L 60-40 M/H636.40.9428 Predom. Rc M/H476.21.2601 5B SF Bay Low876.60.6844 W/L 60-40 High609.60.9842      SA/DSPL Up23.59SA/DSPL Dn57.45
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance600.50.9991
Triple Number Coastal/Long Distance Low688.00.8721
Triple Number Coastal/Long Distance Medium550.41.0902
Triple Number Coastal/Long Distance High498.71.2032
Triple Number Windward/Leeward Low884.20.6786
Triple Number Windward/Leeward Medium674.90.8890
Triple Number Windward/Leeward High605.80.9904
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1386.1969.8745.5633.9572.9539.5510.8456.6430.8
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance600.50.9991
Triple Number Coastal/Long Distance Low688.00.8721
Triple Number Coastal/Long Distance Medium550.41.0902
Triple Number Coastal/Long Distance High498.71.2032
Triple Number Windward/Leeward Low884.20.6786
Triple Number Windward/Leeward Medium674.90.8890
Triple Number Windward/Leeward High605.80.9904
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1386.1969.8745.5633.9572.9539.5510.8456.6430.8
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance600.5
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1386.1969.8745.5633.9572.9539.5510.8456.6430.8
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low688.00.8721
Triple Number Coastal/Long Distance Medium550.41.0902
Triple Number Coastal/Long Distance High498.71.2032
Triple Number Windward/Leeward Low884.20.6786
Triple Number Windward/Leeward Medium674.90.8890
Triple Number Windward/Leeward High605.80.9904
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating600.50.9991
FinRating, kevyt tuuli1014.90.9853
FinRating, kova tuuli480.51.0406
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low688.00.8721
Triple Number Coastal/Long Distance Medium550.41.0902
Triple Number Coastal/Long Distance High498.71.2032
Triple Number Windward/Leeward Low884.20.6786
Triple Number Windward/Leeward Medium674.90.8890
Triple Number Windward/Leeward High605.80.9904
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance0.9991
Triple Number Coastal/Long Distance Low0.8721
Triple Number Coastal/Long Distance Medium1.0902
Triple Number Coastal/Long Distance High1.2032
Triple Number Windward/Leeward Low0.6786
Triple Number Windward/Leeward Medium0.8890
Triple Number Windward/Leeward High0.9904
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1386.1969.8745.5633.9572.9539.5510.8456.6430.8
For information
General Purpose Handicap (GPH)615.9
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance600.50.9991
Triple Number Coastal/Long Distance Low688.00.8721
Triple Number Coastal/Long Distance Medium550.41.0902
Triple Number Coastal/Long Distance High498.71.2032
Triple Number Windward/Leeward Low884.20.6786
Triple Number Windward/Leeward Medium674.90.8890
Triple Number Windward/Leeward High605.80.9904
Saronikos S All Purpose627.50.9561
Saronikos S Upwind716.90.8369
Saronikos S Downwind512.11.1717
Saronikos N All Purpose660.10.9089
Saronikos N Upwind748.50.8016
Saronikos N Downwind559.21.0730
Saronikos SW All Purpose626.20.9582
Saronikos SW Upwind730.90.8209
Saronikos SW Downwind516.41.1619
Saronikos NE All Purpose675.70.8879
Saronikos NE Upwind698.70.8587
Saronikos NE Downwind620.70.9667
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1386.1969.8745.5633.9572.9539.5510.8456.6430.8
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low688.00.8721
Triple Number Coastal/Long Distance Medium550.41.0902
Triple Number Coastal/Long Distance High498.71.2032
Triple Number Windward/Leeward Low884.20.6786
Triple Number Windward/Leeward Medium674.90.8890
Triple Number Windward/Leeward High605.80.9904
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose574.01.0453
5-Band All Purpose Low824.10.7281
5-Band All Purpose L/M630.40.9518
5-Band All Purpose Med560.41.0706
5-Band All Purpose M/H519.41.1551
5-Band All Purpose High489.81.2249
Single Number Predominant Upwind603.20.9947
Single Number Predominant Reaching525.21.1425
Single Number Predominant Downwind549.91.0910
5-Band 50-50 Windward/Leeward Low1034.30.5801
5-Band 50-50 Windward/Leeward L/M766.30.7830
5-Band 50-50 Windward/Leeward Med665.90.9010
5-Band 50-50 Windward/Leeward M/H614.60.9763
5-Band 50-50 Windward/Leeward High580.51.0336
5-Band 60-40 Windward/Leeward Low1046.80.5732
5-Band 60-40 Windward/Leeward L/M779.80.7694
5-Band 60-40 Windward/Leeward Med682.80.8787
5-Band 60-40 Windward/Leeward M/H636.40.9428
5-Band 60-40 Windward/Leeward High609.60.9842
Triple Number 50-50 Windward/Leeward Low925.70.6481
Triple Number 50-50 Windward/Leeward Med675.00.8889
Triple Number 50-50 Windward/Leeward High605.80.9904
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward697.90.8597
Triple Number 60-40 Windward/Leeward Low938.10.6396
Triple Number 60-40 Windward/Leeward Med691.30.8680
Triple Number 60-40 Windward/Leeward High629.20.9536
Triple Number All-Purpose Low744.40.8060
Triple Number All-Purpose Med567.01.0582
Triple Number All-Purpose High511.61.1728
Triple Number Predominant Upwind Low770.30.7789
Triple Number Predominant Upwind Med595.91.0069
Triple Number Predominant Upwind High561.31.0690
Triple Number Predominant Reaching Low669.20.8966
Triple Number Predominant Reaching Med528.61.1351
Triple Number Predominant Reaching High459.01.3072
Triple Number Predominant Downwind Low730.50.8214
Triple Number Predominant Downwind Med541.41.1083
Triple Number Predominant Downwind High457.21.3125
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance600.50.9991
Triple Number Coastal/Long Distance Low688.00.8721
Triple Number Coastal/Long Distance Medium550.41.0902
Triple Number Coastal/Long Distance High498.71.2032
Triple Number Windward/Leeward Low884.20.6786
Triple Number Windward/Leeward Medium674.90.8890
Triple Number Windward/Leeward High605.80.9904
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1386.1969.8745.5633.9572.9539.5510.8456.6430.8
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance600.50.9991
Triple Number Coastal/Long Distance Low688.00.8721
Triple Number Coastal/Long Distance Medium550.41.0902
Triple Number Coastal/Long Distance High498.71.2032
Triple Number Windward/Leeward Low884.20.6786
Triple Number Windward/Leeward Medium674.90.8890
Triple Number Windward/Leeward High605.80.9904
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1386.1969.8745.5633.9572.9539.5510.8456.6430.8
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low688.0
Triple Number Coastal/Long Distance Medium550.4
Triple Number Coastal/Long Distance High498.7
Triple Number Windward/Leeward Low884.2
Triple Number Windward/Leeward Medium674.9
Triple Number Windward/Leeward High605.8
Predominantly Upwind604.2
Predominantly Downwind549.0
Predominantly Reaching530.3
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance600.50.9991
Triple Number Coastal/Long Distance Low688.00.8721
Triple Number Coastal/Long Distance Medium550.41.0902
Triple Number Coastal/Long Distance High498.71.2032
Triple Number Windward/Leeward Low884.20.6786
Triple Number Windward/Leeward Medium674.90.8890
Triple Number Windward/Leeward High605.80.9904
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1386.1969.8745.5633.9572.9539.5510.8456.6430.8
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.8721
Triple Number Coastal/Long Distance Medium1.0902
Triple Number Coastal/Long Distance High1.2032
Triple Number Windward/Leeward Low0.6786
Triple Number Windward/Leeward Medium0.8890
Triple Number Windward/Leeward High0.9904
Coastal/Long Distance0.9991
Predominantly Upwind0.9930
Predominantly Downwind1.0928
For information
General Purpose Handicap (GPH)615.9
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)1.0846
Distanseseilas Trippeltall svak vind0.8721
Distanseseilas Trippeltall mellomvind1.0902
Distanseseilas Trippeltall sterk vind1.2032
Pølsebane Trippeltall svak vind0.6786
Pølsebane Trippeltall mellomvind0.8890
Pølsebane Trippeltall sterk vind0.9904
Motvind Singeltall0.9930
Medvind Singeltall1.0928
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low688.00.8721
Triple Number Coastal/Long Distance Medium550.41.0902
Triple Number Coastal/Long Distance High498.71.2032
Triple Number Windward/Leeward Low884.20.6786
Triple Number Windward/Leeward Medium674.90.8890
Triple Number Windward/Leeward High605.80.9904
Coastal/Long Distance600.50.9991
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind604.20.9930
Predominantly Downwind549.01.0928
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore556.11.0790
Cape Doctor Coastal463.61.2942
Triple Number Coastal/Long Distance Low688.00.8721
Triple Number Coastal/Long Distance Medium550.41.0902
Triple Number Coastal/Long Distance High498.71.2032
Triple Number Windward/Leeward Low884.20.6786
Triple Number Windward/Leeward Medium674.90.8890
Triple Number Windward/Leeward High605.80.9904
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.8721
Triple Number Coastal/Long Distance Medium1.0902
Triple Number Coastal/Long Distance High1.2032
Triple Number Windward/Leeward Low0.6786
Triple Number Windward/Leeward Medium0.8890
Triple Number Windward/Leeward High0.9904
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.8721
Triple Number Coastal/Long Distance Medium1.0902
Triple Number Coastal/Long Distance High1.2032
Triple Number Windward/Leeward Low0.6786
Triple Number Windward/Leeward Medium0.8890
Triple Number Windward/Leeward High0.9904
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance600.50.9991
Triple Number Coastal/Long Distance Low688.00.8721
Triple Number Coastal/Long Distance Medium550.41.0902
Triple Number Coastal/Long Distance High498.71.2032
Triple Number Windward/Leeward Low884.20.6786
Triple Number Windward/Leeward Medium674.90.8890
Triple Number Windward/Leeward High605.80.9904
Predominantly Upwind604.20.9930
Predominantly Downwind549.01.0928
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1386.1969.8745.5633.9572.9539.5510.8456.6430.8
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance600.50.9991
Triple Number Coastal/Long Distance Low688.00.8721
Triple Number Coastal/Long Distance Medium550.41.0902
Triple Number Coastal/Long Distance High498.71.2032
Triple Number Windward/Leeward Low884.20.6786
Triple Number Windward/Leeward Medium674.90.8890
Triple Number Windward/Leeward High605.80.9904
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1386.1969.8745.5633.9572.9539.5510.8456.6430.8
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP574.01.0453 Predom. Dn High435.41.3780 5B AP M/H505.81.1863 TriNum AP Low688.00.8721 Predom. Rc Low730.50.8214 5B AP High479.31.2519 TriNum AP Med550.41.0901 Predom. Rc L/M570.51.0517 5B SF Bay Low876.60.6844 TriNum AP High498.71.2032 Predom. Rc Med513.81.1677 5B SF Bay L/M732.10.8195 TriNum W/L Low925.70.6481 Predom. Rc M/H476.21.2601 5B SF Bay Med643.20.9328 TriNum W/L Med674.90.8890 Predom. Rc High446.81.3429 5B SF Bay M/H595.81.0071 TriNum W/L Hig605.80.9904 5B W/L Low1034.30.5801 5B SF Bay High565.31.0614 Predom. Upwind629.00.9539 5B W/L L/M766.30.7830 ChiMac Up Low748.10.8020 Predom. Reaching543.81.1033 5B W/L Med665.90.9010 ChiMac Up Med681.30.8807 Predom. Downwind570.61.0516 5B W/L M/H614.60.9763 ChiMac Up High603.60.9940 Predom. Up Low844.90.7102 5B W/L High580.51.0336 ChiMac Off Low706.30.8495 Predom. Up L/M652.60.9194 W/L 60-40 Low1046.80.5732 ChiMac Off Med630.10.9522 Predom. Up Med588.31.0199 W/L 60-40 L/M779.80.7694 ChiMac Off High536.91.1175 Predom. Up M/H558.01.0753 W/L 60-40 Med682.80.8787 ChiMac AP Low723.60.8292 Predom. Up High542.91.1052 W/L 60-40 M/H636.40.9428 ChiMac AP Med653.30.9184 Predom. Dn Low812.30.7387 W/L 60-40 High609.60.9842 ChiMac AP High569.11.0543 Predom. Dn L/M611.80.9807 5B AP Low756.30.7934 BayMac Cove Island830.40.7225 Predom. Dn Med534.01.1237 5B AP L/M610.40.9830 BayMac Shore824.30.7279 Predom. Dn M/H480.71.2482 5B AP Med544.21.1025 Harvest Moon484.01.2397      SA/DSPL Up23.59SA/DSPL Dn57.45
ORC Ref  04560004Q3B Issued on 15/05/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Double HandedInternational Certificate2026
THIN MANUSA 24
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ 99Measurement23/04/2025HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall9.950Maximum beam3.410Draft2.001Displacement4,017Wetted area21.48IMS L8.954LSM08.739Accomod. length9.950Sink (kg/mm) 16.52
VCGD-0.246VCGM-0.125 RM Rated (kg·m) 103.7Limit of positive stability(°) 123.6 Stability Index 120.7 BLR index 0.0000Default crew weight170 Declared crew weight 480
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.371PBW0.096PIPA0.0021
EDL1.850ST10.065ST20.177
ST30.179ST40.065ST50.305
RIG
BackstayAdjustableForestayFixedInner forestayNot installedMast materialAluminumSingle headsail furlerNoMainsail furlerArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysNoCheckstaysNoSpreaders2Rotating mastNo
P12.755IG13.207ISP14.492MDT10.111MDL10.209MDT20.109MDL20.151TL1.083MW0.209GO0.234
E4.352J3.875BAS1.534FSD0.030SFJ0.085SPLWPLTPS5.120BD0.159MWT122.60MCG4.640
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS114.4925.120
FLOTATION AND STABILITY
Calculation methodBoom incliningFlotation Date23/04/2025
SFFP0.590FFM1.199FF1.205LCFcl5.453SG1.0200
SAFP9.870FAM0.833FA0.834LCFsh5.712HBI1.003
W185.0W285.0W385.0W485.0LCFD5.656
PD1257.2PD2262.8PD3261.6PD4261.7
WD4.012PLM9000.00GSA1.0RSA1.0RM103.0
INVENTORY
Fixed Ballast Total0
TANKSIdDescriptionSp.WghtCapacityConditionLCGVCG3PVC waste tank port outboardWater3502.760.802Bladder aft stbd CLWater10007.330.001PVC fuel tank port setteeFuel50334.350.00Total deductible284.350.00
OTHER ITEMSIdKindDescriptionWeightLCGVCG3Battery12V Gp 24 Pb-acid engine battery CL206.200.002Battery12V Lithium Gp 31 house battery stbd settee154.760.001Engine (IC)Volvo D1-20Total deductible0
ORC Ref  04560004Q3B Issued on 15/05/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Double HandedInternational Certificate2026
THIN MANUSA 24
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentMPH-220.200.961.682.823.6333.2101/10/2019
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentJ1H-190.090.541.052.093.124.1212.80YesNo 26.68J1L-230.090.541.052.093.124.1212.80YesNo 26.6801/10/2019J4-193.3010.00YesNo 16.80
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentA2-2216.3113.5414.939.188.56107%112.6301/10/2019A0-1914.6313.2713.955.607.4475%69.3801/10/2019
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
CRUISER/RACER REQUIREMENTS*
Accommodation length9.9 mTable area0.44 m²Headroom1.70 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity78 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity48 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.
ORC Ref  04560004Q3B Issued on 15/05/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org