Club Certificate2026
RYUJINUSA 51007
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 Angles45.6°43.4°40.8°39.0°38.4°37.8°37.5°37.0°37.8°
Beat VMG3.444.935.966.486.776.967.107.277.23
52°5.397.568.849.399.719.9810.1910.5110.61
60°5.838.039.219.7910.1910.5110.7711.1511.35
75°6.228.399.5110.3210.9211.3511.7212.3012.70
90°6.078.289.4410.3611.2612.0012.5713.5314.24
110°5.587.969.4210.3011.0411.7412.6814.6916.11
120°5.407.799.3910.5611.4812.3213.1514.7116.36
135°4.807.078.9110.1011.3912.8114.1216.1218.04
150°4.005.907.588.869.9011.0812.5315.7019.19
Run VMG3.465.116.567.678.579.6010.8513.6016.62
Gybe Angles139.7°140.8°142.0°146.9°147.8°144.9°144.5°146.7°149.7°
APH ToD:390.0CDL: 15.633APH ToT: 1.5383CertNo:US51007
BOAT
ClassKer 52DesignerKerBuilderKnierimAge date04/2022Series date03/2022Offset fileker51-usa51007A.offData fileUS51007
HULL
Length Overall16.007 mMaximum Beam4.756 mDraft3.712 mDisplacement7,287 kgDLR2.1548IMS DivisionPerformanceDynamic Allowance0.000%Age Allowance0.130%RS Assessment-0.254%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.448m
CREW
Maximum weight1,143 kg(declared)Minimum weight972 kg ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail90.0891.82Headsail Luffed61.0261.02Headsail FlyingSymmetricAsymmetric276.75276.75 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS Maximum (m²)
Trysail24.30Storm Jib19.27Heavy Weather Jib52.01
SAIL LIMITS
Headsails8Spinnakers6
STABILITY
Righting Moment 368.3 kg·m Stability Index 133.9
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  04560004KI7 Issued on 07/04/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
RYUJINUSA 51007
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 VMG1047.6729.6604.0555.8531.9517.2507.3495.1497.7
52°668.3476.2407.3383.5370.6360.8353.4342.6339.2
60°617.4448.6390.7367.6353.1342.4334.4322.8317.3
75°579.1428.9378.4349.0329.6317.2307.3292.6283.4
90°593.5435.0381.3347.4319.7300.0286.3266.1252.8
110°645.6452.5382.1349.4326.1306.7284.0245.1223.5
120°666.4462.1383.5341.0313.6292.1273.7244.7220.1
135°749.7509.5404.0356.3316.1281.1255.0223.4199.6
150°901.1610.2475.2406.4363.6324.8287.3229.3187.6
Run VMG1040.5704.6548.7469.3419.9375.0331.7264.8216.6
Selected Courses
Windward / Leeward1044.0717.1576.3512.5475.9446.1419.5380.0357.2
All purpose787.7549.7453.5409.0380.8358.5339.3310.9294.2
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward488.91.2271
All purpose390.01.5383
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low501.61.1962
Triple Number Coastal/Long Distance Medium390.71.5358
Triple Number Coastal/Long Distance High333.41.7994
Triple Number Windward/Leeward Low646.70.9278
Triple Number Windward/Leeward Medium489.01.2269
Triple Number Windward/Leeward High411.31.4587
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance425.81.4092
Triple Number Coastal/Long Distance Low501.61.1962
Triple Number Coastal/Long Distance Medium390.71.5358
Triple Number Coastal/Long Distance High333.41.7994
Triple Number Windward/Leeward Low646.70.9278
Triple Number Windward/Leeward Medium489.01.2269
Triple Number Windward/Leeward High411.31.4587
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1043.7715.9542.6461.1409.1373.4342.3294.0275.1
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"1.0657
Downwind "popa"1.3487
70% up, 30% down "Ilhabela"1.1373
30% up, 70% down "Ilhabela-inverso"1.2492
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low501.61.1962
Triple Number Coastal/Long Distance Medium390.71.5358
Triple Number Coastal/Long Distance High333.41.7994
Triple Number Windward/Leeward Low646.70.9278
Triple Number Windward/Leeward Medium489.01.2269
Triple Number Windward/Leeward High411.31.4587
Predominantly Upwind427.51.4036
Predominantly Downwind388.21.5455
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP401.01.4963 Predom. Rc High287.72.0858 5B SF Bay L/M532.51.1267 TriNum AP Low501.61.1962 Predom. Dn Low611.70.9808 5B SF Bay Med461.71.2994 TriNum AP Med390.71.5357 Predom. Dn L/M447.61.3404 5B SF Bay M/H409.11.4665 TriNum AP High333.41.7994 Predom. Dn Med376.71.5930 5B SF Bay High375.21.5990 TriNum W/L Low680.10.8823 Predom. Dn M/H318.31.8850 5B AP Low559.51.0724 TriNum W/L Med489.01.2269 Predom. Dn High279.92.1435 5B AP L/M441.21.3598 TriNum W/L Hig411.31.4587 ChiMac Up Low538.41.1145 5B AP Med384.31.5612 Predom. Upwind443.91.3517 ChiMac Up Med486.31.2338 5B AP M/H341.31.7582 Predom. Reaching379.91.5794 ChiMac Up High422.91.4189 5B AP High312.91.9174 Predom. Downwind405.21.4807 ChiMac Off Low524.01.1450 5B W/L Low763.70.7857 Predom. Up Low610.10.9834 ChiMac Off Med457.91.3102 5B W/L L/M559.71.0719 Predom. Up L/M467.71.2830 ChiMac Off High375.91.5960 5B W/L Med480.61.2484 Predom. Up Med416.21.4416 ChiMac AP Low528.41.1355 5B W/L M/H422.11.4214 Predom. Up M/H381.91.5712 ChiMac AP Med470.01.2765 5B W/L High382.91.5672 Predom. Up High362.41.6555 ChiMac AP High398.01.5077 W/L 60-40 Low766.50.7828 Predom. Rc Low540.81.1095 BayMac Cove Island610.10.9835 W/L 60-40 L/M566.81.0586 Predom. Rc L/M411.21.4590 BayMac Shore605.00.9918 W/L 60-40 Med492.01.2196 Predom. Rc Med356.21.6843 Harvest Moon327.51.8321 W/L 60-40 M/H439.51.3652 Predom. Rc M/H313.31.9149 5B SF Bay Low640.10.9373 W/L 60-40 High405.81.4785      SA/DSPL Up39.93SA/DSPL Dn96.95
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance425.81.4092
Triple Number Coastal/Long Distance Low501.61.1962
Triple Number Coastal/Long Distance Medium390.71.5358
Triple Number Coastal/Long Distance High333.41.7994
Triple Number Windward/Leeward Low646.70.9278
Triple Number Windward/Leeward Medium489.01.2269
Triple Number Windward/Leeward High411.31.4587
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1043.7715.9542.6461.1409.1373.4342.3294.0275.1
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance425.81.4092
Triple Number Coastal/Long Distance Low501.61.1962
Triple Number Coastal/Long Distance Medium390.71.5358
Triple Number Coastal/Long Distance High333.41.7994
Triple Number Windward/Leeward Low646.70.9278
Triple Number Windward/Leeward Medium489.01.2269
Triple Number Windward/Leeward High411.31.4587
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1043.7715.9542.6461.1409.1373.4342.3294.0275.1
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance425.8
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1043.7715.9542.6461.1409.1373.4342.3294.0275.1
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low501.61.1962
Triple Number Coastal/Long Distance Medium390.71.5358
Triple Number Coastal/Long Distance High333.41.7994
Triple Number Windward/Leeward Low646.70.9278
Triple Number Windward/Leeward Medium489.01.2269
Triple Number Windward/Leeward High411.31.4587
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating425.81.4092
FinRating, kevyt tuuli752.81.3284
FinRating, kova tuuli313.61.5944
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low501.61.1962
Triple Number Coastal/Long Distance Medium390.71.5358
Triple Number Coastal/Long Distance High333.41.7994
Triple Number Windward/Leeward Low646.70.9278
Triple Number Windward/Leeward Medium489.01.2269
Triple Number Windward/Leeward High411.31.4587
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance1.4092
Triple Number Coastal/Long Distance Low1.1962
Triple Number Coastal/Long Distance Medium1.5358
Triple Number Coastal/Long Distance High1.7994
Triple Number Windward/Leeward Low0.9278
Triple Number Windward/Leeward Medium1.2269
Triple Number Windward/Leeward High1.4587
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1043.7715.9542.6461.1409.1373.4342.3294.0275.1
For information
General Purpose Handicap (GPH)438.1
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance425.81.4092
Triple Number Coastal/Long Distance Low501.61.1962
Triple Number Coastal/Long Distance Medium390.71.5358
Triple Number Coastal/Long Distance High333.41.7994
Triple Number Windward/Leeward Low646.70.9278
Triple Number Windward/Leeward Medium489.01.2269
Triple Number Windward/Leeward High411.31.4587
Saronikos S All Purpose440.71.3615
Saronikos S Upwind507.71.1819
Saronikos S Downwind361.31.6606
Saronikos N All Purpose469.41.2782
Saronikos N Upwind526.81.1390
Saronikos N Downwind411.61.4576
Saronikos SW All Purpose441.71.3583
Saronikos SW Upwind516.81.1610
Saronikos SW Downwind372.21.6120
Saronikos NE All Purpose486.81.2325
Saronikos NE Upwind491.41.2210
Saronikos NE Downwind468.01.2821
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1043.7715.9542.6461.1409.1373.4342.3294.0275.1
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low501.61.1962
Triple Number Coastal/Long Distance Medium390.71.5358
Triple Number Coastal/Long Distance High333.41.7994
Triple Number Windward/Leeward Low646.70.9278
Triple Number Windward/Leeward Medium489.01.2269
Triple Number Windward/Leeward High411.31.4587
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose401.01.4963
5-Band All Purpose Low607.70.9873
5-Band All Purpose L/M456.21.3152
5-Band All Purpose Med395.31.5179
5-Band All Purpose M/H349.11.7185
5-Band All Purpose High320.31.8731
Single Number Predominant Upwind426.11.4082
Single Number Predominant Reaching366.21.6383
Single Number Predominant Downwind389.21.5415
5-Band 50-50 Windward/Leeward Low763.70.7857
5-Band 50-50 Windward/Leeward L/M559.71.0719
5-Band 50-50 Windward/Leeward Med480.61.2484
5-Band 50-50 Windward/Leeward M/H422.11.4214
5-Band 50-50 Windward/Leeward High382.91.5672
5-Band 60-40 Windward/Leeward Low766.50.7828
5-Band 60-40 Windward/Leeward L/M566.81.0586
5-Band 60-40 Windward/Leeward Med492.01.2196
5-Band 60-40 Windward/Leeward M/H439.51.3652
5-Band 60-40 Windward/Leeward High405.81.4785
Triple Number 50-50 Windward/Leeward Low680.10.8823
Triple Number 50-50 Windward/Leeward Med489.11.2268
Triple Number 50-50 Windward/Leeward High411.31.4587
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward500.51.1989
Triple Number 60-40 Windward/Leeward Low684.10.8771
Triple Number 60-40 Windward/Leeward Med499.71.2007
Triple Number 60-40 Windward/Leeward High430.11.3950
Triple Number All-Purpose Low545.41.1002
Triple Number All-Purpose Med402.21.4918
Triple Number All-Purpose High341.11.7588
Triple Number Predominant Upwind Low555.91.0792
Triple Number Predominant Upwind Med423.61.4165
Triple Number Predominant Upwind High382.41.5690
Triple Number Predominant Reaching Low490.91.2223
Triple Number Predominant Reaching Med370.81.6182
Triple Number Predominant Reaching High299.02.0068
Triple Number Predominant Downwind Low544.31.1022
Triple Number Predominant Downwind Med385.31.5571
Triple Number Predominant Downwind High298.82.0079
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance425.81.4092
Triple Number Coastal/Long Distance Low501.61.1962
Triple Number Coastal/Long Distance Medium390.71.5358
Triple Number Coastal/Long Distance High333.41.7994
Triple Number Windward/Leeward Low646.70.9278
Triple Number Windward/Leeward Medium489.01.2269
Triple Number Windward/Leeward High411.31.4587
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1043.7715.9542.6461.1409.1373.4342.3294.0275.1
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance425.81.4092
Triple Number Coastal/Long Distance Low501.61.1962
Triple Number Coastal/Long Distance Medium390.71.5358
Triple Number Coastal/Long Distance High333.41.7994
Triple Number Windward/Leeward Low646.70.9278
Triple Number Windward/Leeward Medium489.01.2269
Triple Number Windward/Leeward High411.31.4587
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1043.7715.9542.6461.1409.1373.4342.3294.0275.1
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low501.6
Triple Number Coastal/Long Distance Medium390.7
Triple Number Coastal/Long Distance High333.4
Triple Number Windward/Leeward Low646.7
Triple Number Windward/Leeward Medium489.0
Triple Number Windward/Leeward High411.3
Predominantly Upwind427.5
Predominantly Downwind388.2
Predominantly Reaching370.6
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance425.81.4092
Triple Number Coastal/Long Distance Low501.61.1962
Triple Number Coastal/Long Distance Medium390.71.5358
Triple Number Coastal/Long Distance High333.41.7994
Triple Number Windward/Leeward Low646.70.9278
Triple Number Windward/Leeward Medium489.01.2269
Triple Number Windward/Leeward High411.31.4587
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1043.7715.9542.6461.1409.1373.4342.3294.0275.1
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low1.1962
Triple Number Coastal/Long Distance Medium1.5358
Triple Number Coastal/Long Distance High1.7994
Triple Number Windward/Leeward Low0.9278
Triple Number Windward/Leeward Medium1.2269
Triple Number Windward/Leeward High1.4587
Coastal/Long Distance1.4092
Predominantly Upwind1.4036
Predominantly Downwind1.5455
For information
General Purpose Handicap (GPH)438.1
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)1.5383
Distanseseilas Trippeltall svak vind1.1962
Distanseseilas Trippeltall mellomvind1.5358
Distanseseilas Trippeltall sterk vind1.7994
Pølsebane Trippeltall svak vind0.9278
Pølsebane Trippeltall mellomvind1.2269
Pølsebane Trippeltall sterk vind1.4587
Motvind Singeltall1.4036
Medvind Singeltall1.5455
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low501.61.1962
Triple Number Coastal/Long Distance Medium390.71.5358
Triple Number Coastal/Long Distance High333.41.7994
Triple Number Windward/Leeward Low646.70.9278
Triple Number Windward/Leeward Medium489.01.2269
Triple Number Windward/Leeward High411.31.4587
Coastal/Long Distance425.81.4092
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind427.51.4036
Predominantly Downwind388.21.5455
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore364.01.6483
Cape Doctor Coastal299.22.0053
Triple Number Coastal/Long Distance Low501.61.1962
Triple Number Coastal/Long Distance Medium390.71.5358
Triple Number Coastal/Long Distance High333.41.7994
Triple Number Windward/Leeward Low646.70.9278
Triple Number Windward/Leeward Medium489.01.2269
Triple Number Windward/Leeward High411.31.4587
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low1.1962
Triple Number Coastal/Long Distance Medium1.5358
Triple Number Coastal/Long Distance High1.7994
Triple Number Windward/Leeward Low0.9278
Triple Number Windward/Leeward Medium1.2269
Triple Number Windward/Leeward High1.4587
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low1.1962
Triple Number Coastal/Long Distance Medium1.5358
Triple Number Coastal/Long Distance High1.7994
Triple Number Windward/Leeward Low0.9278
Triple Number Windward/Leeward Medium1.2269
Triple Number Windward/Leeward High1.4587
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance425.81.4092
Triple Number Coastal/Long Distance Low501.61.1962
Triple Number Coastal/Long Distance Medium390.71.5358
Triple Number Coastal/Long Distance High333.41.7994
Triple Number Windward/Leeward Low646.70.9278
Triple Number Windward/Leeward Medium489.01.2269
Triple Number Windward/Leeward High411.31.4587
Predominantly Upwind427.51.4036
Predominantly Downwind388.21.5455
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1043.7715.9542.6461.1409.1373.4342.3294.0275.1
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance425.81.4092
Triple Number Coastal/Long Distance Low501.61.1962
Triple Number Coastal/Long Distance Medium390.71.5358
Triple Number Coastal/Long Distance High333.41.7994
Triple Number Windward/Leeward Low646.70.9278
Triple Number Windward/Leeward Medium489.01.2269
Triple Number Windward/Leeward High411.31.4587
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1043.7715.9542.6461.1409.1373.4342.3294.0275.1
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP401.01.4963 Predom. Dn High279.92.1435 5B AP M/H341.31.7582 TriNum AP Low501.61.1962 Predom. Rc Low540.81.1095 5B AP High312.91.9174 TriNum AP Med390.71.5357 Predom. Rc L/M411.21.4590 5B SF Bay Low640.10.9373 TriNum AP High333.41.7994 Predom. Rc Med356.21.6843 5B SF Bay L/M532.51.1267 TriNum W/L Low680.10.8823 Predom. Rc M/H313.31.9149 5B SF Bay Med461.71.2994 TriNum W/L Med489.01.2269 Predom. Rc High287.72.0858 5B SF Bay M/H409.11.4665 TriNum W/L Hig411.31.4587 5B W/L Low763.70.7857 5B SF Bay High375.21.5990 Predom. Upwind443.91.3517 5B W/L L/M559.71.0719 ChiMac Up Low538.41.1145 Predom. Reaching379.91.5794 5B W/L Med480.61.2484 ChiMac Up Med486.31.2338 Predom. Downwind405.21.4807 5B W/L M/H422.11.4214 ChiMac Up High422.91.4189 Predom. Up Low610.10.9834 5B W/L High382.91.5672 ChiMac Off Low524.01.1450 Predom. Up L/M467.71.2830 W/L 60-40 Low766.50.7828 ChiMac Off Med457.91.3102 Predom. Up Med416.21.4416 W/L 60-40 L/M566.81.0586 ChiMac Off High375.91.5960 Predom. Up M/H381.91.5712 W/L 60-40 Med492.01.2196 ChiMac AP Low528.41.1355 Predom. Up High362.41.6555 W/L 60-40 M/H439.51.3652 ChiMac AP Med470.01.2765 Predom. Dn Low611.70.9808 W/L 60-40 High405.81.4785 ChiMac AP High398.01.5077 Predom. Dn L/M447.61.3404 5B AP Low559.51.0724 BayMac Cove Island610.10.9835 Predom. Dn Med376.71.5930 5B AP L/M441.21.3598 BayMac Shore605.00.9918 Predom. Dn M/H318.31.8850 5B AP Med384.31.5612 Harvest Moon327.51.8321      SA/DSPL Up39.93SA/DSPL Dn96.95
ORC Ref  04560004KI7 Issued on 07/04/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
RYUJINUSA 51007
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassKer 52Measurement06/03/2023HINPlan reviewHull constructionCarbonCarbon rudderYesLight stanchionsNoTrim tabNo
Length overall16.007Maximum beam4.756Draft3.712Displacement7,287Wetted area41.22IMS L15.504LSM015.009Accomod. length15.457Sink (kg/mm) 32.05
VCGD-0.857VCGM-0.928 RM Rated (kg·m) 368.3Limit of positive stability(°) 135.0 Stability Index 133.9 BLR index 0.0000Default crew weight1,228 Declared crew weight 1,143
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.448PBW0.117PIPA0.0041
EDL1.120ST10.066ST20.179
ST30.184ST40.111ST50.286
RIG
BackstayAdjustableForestayFixedInner forestayNot installedMast materialCarbonSingle headsail furlerNoMainsail furlerArticulated bowspritNoNon-circular riggingNoFiber riggingYesBase of mastFixedRunning backstaysYesCheckstaysNoSpreaders2Rotating mastNo
P21.388IG19.627ISP23.440MDT10.135MDL10.295MDT20.098MDL20.152TL3.800MW0.152GO0.152
E6.490J5.700BAS1.907FSD0.033SFJ0.500SPLWPLTPS9.255BD0.250MWT330.00MCG7.600
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodPoles incliningFlotation Date06/03/2023
SFFP0.295FFM0.421FF0.421LCFcl8.930SG1.0250
SAFP15.540FAM1.104FA1.104LCFsh9.243HBI1.337
W1115.8W2115.8W3115.8W4115.8
PD1448.4PD2448.4PD3448.4PD4448.4
WD18.150PLM9000.00GSA1.0RSA1.0RM369.1
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  04560004KI7 Issued on 07/04/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
RYUJINUSA 51007
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentMO-231.432.173.004.395.5290.0808/01/2024OUS149830-001ROMN11.442.182.994.375.5289.9823/05/2025OUS125251-001
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentJ2+-250.150.981.743.164.525.8719.72YesNo 61.0221/06/2025OUS161486-001J1.5-220.150.961.733.154.525.9019.71YesNo 60.9601/05/2023OUS150308-003J2-250.150.971.743.154.525.8919.69YesNo 60.9211/01/2024OUS158658-002J3+-HWJ-250.100.891.592.914.325.8617.50YesNo 51.6821/06/2025OUS161486-002OSS-240.100.731.382.744.145.5717.42YesInner 48.3227/10/2023IRS-250.630.871.161.722.262.8310.28YesInner 17.3219/03/2025OUS160778-001
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentA2-3-2426.1122.5224.3213.6113.8598%276.7514/05/2025OUS158658-004RA1.5-2226.0822.8924.4913.2614.5091%275.6206/11/2024OUS158658-003A2.5-2325.4422.1323.7913.5714.1096%271.0705/11/2022OUS150308-002A5-2223.1118.8220.9712.0913.7388%216.9507/01/2022OUS145960-001
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
ORC Ref  04560004KI7 Issued on 07/04/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org