Club Certificate2026
POWERS OF TWOUSA 421
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 Angles46.4°43.7°41.6°39.7°37.6°36.6°36.3°36.1°36.6°
Beat VMG2.323.354.154.745.145.345.445.545.54
52°3.645.136.186.837.187.377.487.607.65
60°3.925.426.447.017.347.567.707.867.94
75°4.195.796.807.237.507.798.028.308.46
90°4.466.087.057.527.838.048.228.709.10
110°4.335.967.017.618.128.578.999.7110.43
120°4.085.696.867.528.078.619.2310.5211.65
135°3.555.126.347.157.698.248.8310.5713.38
150°2.944.315.466.447.137.608.059.1011.41
Run VMG2.553.734.735.586.206.647.037.889.88
Gybe Angles139.3°142.8°146.7°149.7°152.3°156.3°159.0°144.9°140.1°
APH ToD:544.1CDL: 9.389APH ToT: 1.1028CertNo:US421-105
BOAT
ClassJ 105DesignerJohnstoneBuilderJ BoatsAge date01/2001Series date01/1991Offset filej105.offData fileUSA421-105
HULL
Length Overall10.570 mMaximum Beam3.344 mDraft2.004 mDisplacement3,891 kgDLR4.6475IMS DivisionPerformanceDynamic Allowance0.180%Age Allowance0.650%RS Assessment-0.178%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameter0.381m
CREW
Maximum weight639 kg(declared)Minimum weight509 kg ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail34.0534.82Headsail Luffed25.3425.34Headsail FlyingSymmetricAsymmetric89.1089.10 (1 asymmetric(s) with SHW/SFL < 85%)
STORM SAIL AREAS Maximum (m²)
Trysail9.86Storm Jib7.84Heavy Weather Jib21.16
SAIL LIMITS
Headsails5
✱ One set on the forestay
Spinnakers4
STABILITY
Righting Moment 103.3 kg·m Stability Index 115.4
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  04560004UJM Issued on 01/07/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
POWERS OF TWOUSA 421
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 VMG1554.61074.6868.4759.0700.3674.7661.7650.3649.6
52°989.6701.3583.0527.4501.6488.4481.4473.6470.4
60°919.3663.7559.4513.4490.3476.1467.4458.0453.6
75°859.8621.3529.2497.7480.1462.1448.7433.7425.5
90°807.7591.8510.9478.5459.7447.7438.1413.7395.5
110°831.3604.4513.9473.0443.4419.9400.3370.8345.1
120°883.4632.2524.5478.7446.2418.1390.1342.3309.1
135°1012.8703.2568.0503.6468.1437.0407.5340.5269.0
150°1224.3835.9658.8559.0504.9473.9447.4395.4315.6
Run VMG1413.7965.2760.7645.5580.8542.1511.9456.6364.5
Selected Courses
Windward / Leeward1484.21019.9814.5702.3640.5608.4586.8553.5507.0
All purpose1110.3777.6635.4564.5525.0501.1483.3453.7422.1
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward673.10.8914
All purpose544.11.1028
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low706.50.8492
Triple Number Coastal/Long Distance Medium541.41.1083
Triple Number Coastal/Long Distance High476.61.2588
Triple Number Windward/Leeward Low917.30.6541
Triple Number Windward/Leeward Medium667.60.8988
Triple Number Windward/Leeward High579.71.0350
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance592.71.0123
Triple Number Coastal/Long Distance Low706.50.8492
Triple Number Coastal/Long Distance Medium541.41.1083
Triple Number Coastal/Long Distance High476.61.2588
Triple Number Windward/Leeward Low917.30.6541
Triple Number Windward/Leeward Medium667.60.8988
Triple Number Windward/Leeward High579.71.0350
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1477.11014.5764.3634.2559.4520.0487.8433.1402.8
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.7794
Downwind "popa"0.9411
70% up, 30% down "Ilhabela"0.8217
30% up, 70% down "Ilhabela-inverso"0.8859
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low706.50.8492
Triple Number Coastal/Long Distance Medium541.41.1083
Triple Number Coastal/Long Distance High476.61.2588
Triple Number Windward/Leeward Low917.30.6541
Triple Number Windward/Leeward Medium667.60.8988
Triple Number Windward/Leeward High579.71.0350
Predominantly Upwind591.41.0146
Predominantly Downwind552.31.0864
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP566.11.0599 Predom. Rc High426.31.4074 5B SF Bay L/M743.10.8074 TriNum AP Low706.50.8492 Predom. Dn Low849.40.7064 5B SF Bay Med631.10.9507 TriNum AP Med541.41.1081 Predom. Dn L/M623.70.9620 5B SF Bay M/H569.01.0545 TriNum AP High476.61.2588 Predom. Dn Med533.41.1248 5B SF Bay High532.51.1267 TriNum W/L Low962.70.6232 Predom. Dn M/H474.41.2649 5B AP Low784.00.7653 TriNum W/L Med667.60.8988 Predom. Dn High426.11.4080 5B AP L/M615.10.9755 TriNum W/L Hig579.71.0350 ChiMac Up Low762.10.7873 5B AP Med533.31.1251 Predom. Upwind617.90.9710 ChiMac Up Med681.20.8808 5B AP M/H484.81.2376 Predom. Reaching539.01.1131 ChiMac Up High586.91.0224 5B AP High453.31.3235 Predom. Downwind575.61.0424 ChiMac Off Low729.00.8230 5B W/L Low1084.60.5532 Predom. Up Low876.70.6843 ChiMac Off Med642.90.9333 5B W/L L/M779.50.7697 Predom. Up L/M654.70.9164 ChiMac Off High538.21.1148 5B W/L Med655.50.9154 Predom. Up Med571.21.0503 ChiMac AP Low740.80.8099 5B W/L M/H589.31.0181 Predom. Up M/H528.41.1354 ChiMac AP Med658.80.9108 5B W/L High551.21.0885 Predom. Up High505.61.1867 ChiMac AP High560.81.0699 W/L 60-40 Low1096.30.5473 Predom. Rc Low754.20.7955 BayMac Cove Island857.00.7001 W/L 60-40 L/M790.70.7588 Predom. Rc L/M572.71.0477 BayMac Shore849.80.7061 W/L 60-40 Med667.70.8986 Predom. Rc Med504.61.1889 Harvest Moon475.11.2629 W/L 60-40 M/H604.50.9926 Predom. Rc M/H461.21.3011 5B SF Bay Low911.80.6580 W/L 60-40 High571.41.0500      SA/DSPL Up23.90SA/DSPL Dn49.55
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance592.71.0123
Triple Number Coastal/Long Distance Low706.50.8492
Triple Number Coastal/Long Distance Medium541.41.1083
Triple Number Coastal/Long Distance High476.61.2588
Triple Number Windward/Leeward Low917.30.6541
Triple Number Windward/Leeward Medium667.60.8988
Triple Number Windward/Leeward High579.71.0350
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1477.11014.5764.3634.2559.4520.0487.8433.1402.8
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance592.71.0123
Triple Number Coastal/Long Distance Low706.50.8492
Triple Number Coastal/Long Distance Medium541.41.1083
Triple Number Coastal/Long Distance High476.61.2588
Triple Number Windward/Leeward Low917.30.6541
Triple Number Windward/Leeward Medium667.60.8988
Triple Number Windward/Leeward High579.71.0350
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1477.11014.5764.3634.2559.4520.0487.8433.1402.8
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance592.7
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1477.11014.5764.3634.2559.4520.0487.8433.1402.8
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low706.50.8492
Triple Number Coastal/Long Distance Medium541.41.1083
Triple Number Coastal/Long Distance High476.61.2588
Triple Number Windward/Leeward Low917.30.6541
Triple Number Windward/Leeward Medium667.60.8988
Triple Number Windward/Leeward High579.71.0350
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating592.71.0123
FinRating, kevyt tuuli1065.30.9387
FinRating, kova tuuli453.01.1038
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low706.50.8492
Triple Number Coastal/Long Distance Medium541.41.1083
Triple Number Coastal/Long Distance High476.61.2588
Triple Number Windward/Leeward Low917.30.6541
Triple Number Windward/Leeward Medium667.60.8988
Triple Number Windward/Leeward High579.71.0350
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance1.0123
Triple Number Coastal/Long Distance Low0.8492
Triple Number Coastal/Long Distance Medium1.1083
Triple Number Coastal/Long Distance High1.2588
Triple Number Windward/Leeward Low0.6541
Triple Number Windward/Leeward Medium0.8988
Triple Number Windward/Leeward High1.0350
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1477.11014.5764.3634.2559.4520.0487.8433.1402.8
For information
General Purpose Handicap (GPH)612.4
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance592.71.0123
Triple Number Coastal/Long Distance Low706.50.8492
Triple Number Coastal/Long Distance Medium541.41.1083
Triple Number Coastal/Long Distance High476.61.2588
Triple Number Windward/Leeward Low917.30.6541
Triple Number Windward/Leeward Medium667.60.8988
Triple Number Windward/Leeward High579.71.0350
Saronikos S All Purpose627.90.9556
Saronikos S Upwind712.00.8427
Saronikos S Downwind522.61.1480
Saronikos N All Purpose654.70.9164
Saronikos N Upwind742.90.8076
Saronikos N Downwind570.11.0525
Saronikos SW All Purpose630.60.9514
Saronikos SW Upwind735.50.8158
Saronikos SW Downwind523.11.1470
Saronikos NE All Purpose677.10.8861
Saronikos NE Upwind694.20.8643
Saronikos NE Downwind636.70.9423
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1477.11014.5764.3634.2559.4520.0487.8433.1402.8
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low706.50.8492
Triple Number Coastal/Long Distance Medium541.41.1083
Triple Number Coastal/Long Distance High476.61.2588
Triple Number Windward/Leeward Low917.30.6541
Triple Number Windward/Leeward Medium667.60.8988
Triple Number Windward/Leeward High579.71.0350
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose566.11.0599
5-Band All Purpose Low857.10.7000
5-Band All Purpose L/M636.40.9428
5-Band All Purpose Med551.01.0890
5-Band All Purpose M/H501.01.1975
5-Band All Purpose High466.31.2868
Single Number Predominant Upwind590.61.0160
Single Number Predominant Reaching519.11.1559
Single Number Predominant Downwind552.81.0854
5-Band 50-50 Windward/Leeward Low1084.60.5532
5-Band 50-50 Windward/Leeward L/M779.50.7697
5-Band 50-50 Windward/Leeward Med655.50.9154
5-Band 50-50 Windward/Leeward M/H589.31.0181
5-Band 50-50 Windward/Leeward High551.21.0885
5-Band 60-40 Windward/Leeward Low1096.30.5473
5-Band 60-40 Windward/Leeward L/M790.70.7588
5-Band 60-40 Windward/Leeward Med667.70.8986
5-Band 60-40 Windward/Leeward M/H604.50.9926
5-Band 60-40 Windward/Leeward High571.41.0500
Triple Number 50-50 Windward/Leeward Low962.70.6232
Triple Number 50-50 Windward/Leeward Med667.70.8986
Triple Number 50-50 Windward/Leeward High579.71.0350
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward685.70.8750
Triple Number 60-40 Windward/Leeward Low973.90.6161
Triple Number 60-40 Windward/Leeward Med679.60.8828
Triple Number 60-40 Windward/Leeward High595.91.0069
Triple Number All-Purpose Low767.50.7818
Triple Number All-Purpose Med559.41.0726
Triple Number All-Purpose High492.11.2192
Triple Number Predominant Upwind Low792.10.7575
Triple Number Predominant Upwind Med582.01.0309
Triple Number Predominant Upwind High527.21.1381
Triple Number Predominant Reaching Low685.30.8756
Triple Number Predominant Reaching Med520.31.1531
Triple Number Predominant Reaching High443.51.3529
Triple Number Predominant Downwind Low757.70.7918
Triple Number Predominant Downwind Med543.11.1048
Triple Number Predominant Downwind High453.81.3221
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance592.71.0123
Triple Number Coastal/Long Distance Low706.50.8492
Triple Number Coastal/Long Distance Medium541.41.1083
Triple Number Coastal/Long Distance High476.61.2588
Triple Number Windward/Leeward Low917.30.6541
Triple Number Windward/Leeward Medium667.60.8988
Triple Number Windward/Leeward High579.71.0350
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1477.11014.5764.3634.2559.4520.0487.8433.1402.8
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance592.71.0123
Triple Number Coastal/Long Distance Low706.50.8492
Triple Number Coastal/Long Distance Medium541.41.1083
Triple Number Coastal/Long Distance High476.61.2588
Triple Number Windward/Leeward Low917.30.6541
Triple Number Windward/Leeward Medium667.60.8988
Triple Number Windward/Leeward High579.71.0350
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1477.11014.5764.3634.2559.4520.0487.8433.1402.8
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low706.5
Triple Number Coastal/Long Distance Medium541.4
Triple Number Coastal/Long Distance High476.6
Triple Number Windward/Leeward Low917.3
Triple Number Windward/Leeward Medium667.6
Triple Number Windward/Leeward High579.7
Predominantly Upwind591.4
Predominantly Downwind552.3
Predominantly Reaching527.8
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance592.71.0123
Triple Number Coastal/Long Distance Low706.50.8492
Triple Number Coastal/Long Distance Medium541.41.1083
Triple Number Coastal/Long Distance High476.61.2588
Triple Number Windward/Leeward Low917.30.6541
Triple Number Windward/Leeward Medium667.60.8988
Triple Number Windward/Leeward High579.71.0350
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1477.11014.5764.3634.2559.4520.0487.8433.1402.8
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.8492
Triple Number Coastal/Long Distance Medium1.1083
Triple Number Coastal/Long Distance High1.2588
Triple Number Windward/Leeward Low0.6541
Triple Number Windward/Leeward Medium0.8988
Triple Number Windward/Leeward High1.0350
Coastal/Long Distance1.0123
Predominantly Upwind1.0146
Predominantly Downwind1.0864
For information
General Purpose Handicap (GPH)612.4
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)1.1028
Distanseseilas Trippeltall svak vind0.8492
Distanseseilas Trippeltall mellomvind1.1083
Distanseseilas Trippeltall sterk vind1.2588
Pølsebane Trippeltall svak vind0.6541
Pølsebane Trippeltall mellomvind0.8988
Pølsebane Trippeltall sterk vind1.0350
Motvind Singeltall1.0146
Medvind Singeltall1.0864
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low706.50.8492
Triple Number Coastal/Long Distance Medium541.41.1083
Triple Number Coastal/Long Distance High476.61.2588
Triple Number Windward/Leeward Low917.30.6541
Triple Number Windward/Leeward Medium667.60.8988
Triple Number Windward/Leeward High579.71.0350
Coastal/Long Distance592.71.0123
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind591.41.0146
Predominantly Downwind552.31.0864
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore521.01.1517
Cape Doctor Coastal431.61.3902
Triple Number Coastal/Long Distance Low706.50.8492
Triple Number Coastal/Long Distance Medium541.41.1083
Triple Number Coastal/Long Distance High476.61.2588
Triple Number Windward/Leeward Low917.30.6541
Triple Number Windward/Leeward Medium667.60.8988
Triple Number Windward/Leeward High579.71.0350
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.8492
Triple Number Coastal/Long Distance Medium1.1083
Triple Number Coastal/Long Distance High1.2588
Triple Number Windward/Leeward Low0.6541
Triple Number Windward/Leeward Medium0.8988
Triple Number Windward/Leeward High1.0350
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.8492
Triple Number Coastal/Long Distance Medium1.1083
Triple Number Coastal/Long Distance High1.2588
Triple Number Windward/Leeward Low0.6541
Triple Number Windward/Leeward Medium0.8988
Triple Number Windward/Leeward High1.0350
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance592.71.0123
Triple Number Coastal/Long Distance Low706.50.8492
Triple Number Coastal/Long Distance Medium541.41.1083
Triple Number Coastal/Long Distance High476.61.2588
Triple Number Windward/Leeward Low917.30.6541
Triple Number Windward/Leeward Medium667.60.8988
Triple Number Windward/Leeward High579.71.0350
Predominantly Upwind591.41.0146
Predominantly Downwind552.31.0864
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1477.11014.5764.3634.2559.4520.0487.8433.1402.8
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance592.71.0123
Triple Number Coastal/Long Distance Low706.50.8492
Triple Number Coastal/Long Distance Medium541.41.1083
Triple Number Coastal/Long Distance High476.61.2588
Triple Number Windward/Leeward Low917.30.6541
Triple Number Windward/Leeward Medium667.60.8988
Triple Number Windward/Leeward High579.71.0350
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1477.11014.5764.3634.2559.4520.0487.8433.1402.8
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP566.11.0599 Predom. Dn High426.11.4080 5B AP M/H484.81.2376 TriNum AP Low706.50.8492 Predom. Rc Low754.20.7955 5B AP High453.31.3235 TriNum AP Med541.41.1081 Predom. Rc L/M572.71.0477 5B SF Bay Low911.80.6580 TriNum AP High476.61.2588 Predom. Rc Med504.61.1889 5B SF Bay L/M743.10.8074 TriNum W/L Low962.70.6232 Predom. Rc M/H461.21.3011 5B SF Bay Med631.10.9507 TriNum W/L Med667.60.8988 Predom. Rc High426.31.4074 5B SF Bay M/H569.01.0545 TriNum W/L Hig579.71.0350 5B W/L Low1084.60.5532 5B SF Bay High532.51.1267 Predom. Upwind617.90.9710 5B W/L L/M779.50.7697 ChiMac Up Low762.10.7873 Predom. Reaching539.01.1131 5B W/L Med655.50.9154 ChiMac Up Med681.20.8808 Predom. Downwind575.61.0424 5B W/L M/H589.31.0181 ChiMac Up High586.91.0224 Predom. Up Low876.70.6843 5B W/L High551.21.0885 ChiMac Off Low729.00.8230 Predom. Up L/M654.70.9164 W/L 60-40 Low1096.30.5473 ChiMac Off Med642.90.9333 Predom. Up Med571.21.0503 W/L 60-40 L/M790.70.7588 ChiMac Off High538.21.1148 Predom. Up M/H528.41.1354 W/L 60-40 Med667.70.8986 ChiMac AP Low740.80.8099 Predom. Up High505.61.1867 W/L 60-40 M/H604.50.9926 ChiMac AP Med658.80.9108 Predom. Dn Low849.40.7064 W/L 60-40 High571.41.0500 ChiMac AP High560.81.0699 Predom. Dn L/M623.70.9620 5B AP Low784.00.7653 BayMac Cove Island857.00.7001 Predom. Dn Med533.41.1248 5B AP L/M615.10.9755 BayMac Shore849.80.7061 Predom. Dn M/H474.41.2649 5B AP Med533.31.1251 Harvest Moon475.11.2629      SA/DSPL Up23.90SA/DSPL Dn49.55
ORC Ref  04560004UJM Issued on 01/07/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
POWERS OF TWOUSA 421
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ 105Measurement09/03/2024HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall10.570Maximum beam3.344Draft2.004Displacement3,891Wetted area22.69IMS L9.683LSM09.424Accomod. length10.570Sink (kg/mm) 17.00
VCGD-0.159VCGM-0.175 RM Rated (kg·m) 103.3Limit of positive stability(°) 118.0 Stability Index 115.4 BLR index 0.0000Default crew weight633 Declared crew weight 639
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.381PBW0.100PIPA0.0049
PSD0.026PHD0.068PHL0.113
PSA21.0°ESL0.813
ST10.020ST20.096ST30.090
ST40.055ST50.255
RIG
BackstayAdjustableForestayAdjustable (turnbuckle)Inner forestayNot installedMast materialAluminumSingle headsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysNoCheckstaysNoSpreaders2Rotating mastNo
P12.650IG12.433ISP12.853MDT10.101MDL10.164MDT20.085MDL20.105TL2.010MW0.164GO0.192
E4.450J4.130BAS1.553FSD0.034SFJ0.000SPLWPLTPS5.901BD0.130MWTMCG
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodPoles incliningFlotation Date09/03/2024
SFFP0.966FFM1.096FF1.095LCFcl5.858SG1.0270
SAFP10.056FAM0.763FA0.763LCFsh6.097HBI0.928
W153.4W253.4W353.4W453.4
PD1512.7PD2512.7PD3512.7PD4512.7
WD12.600PLM9000.00GSA1.0RSA1.0RM103.3
INVENTORY
Fixed Ballast Total0
TANKSIdDescriptionSp.WghtCapacityConditionLCGVCGAstbFuel5005.80BportWater2005.90Total deductible0
OTHER ITEMSIdKindDescriptionWeightLCGVCGCBattery70 Ah engine cl8.60DEngine (IC)Yanmar 2GMTotal deductible
ORC Ref  04560004UJM Issued on 01/07/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
POWERS OF TWOUSA 421
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentA0.181.692.8934.0517/04/2025
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentA0.082.024.1412.15YesNo 25.3417/04/2025
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentB15.1012.1413.627.857.85100%89.1017/04/2025A15.1012.1413.627.369.8175%89.1017/04/2025A314.7511.7513.257.267.8393%81.4225/10/2025IHC 159646
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
ORC Ref  04560004UJM Issued on 01/07/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org