International Certificate2026
RINGLEUSA 61866
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 Angles47.8°44.8°42.2°40.7°40.1°39.7°39.4°39.4°40.4°
Beat VMG2.463.534.334.885.195.355.445.515.45
52°3.915.476.507.187.557.737.837.937.93
60°4.255.846.837.457.807.988.088.198.20
75°4.766.337.307.798.018.258.428.618.71
90°4.916.517.518.038.348.548.708.989.23
110°4.626.317.518.148.558.849.119.6610.04
120°4.376.207.448.128.578.999.379.9010.38
135°3.885.536.917.788.318.759.2210.2311.60
150°3.204.665.866.947.758.218.599.3710.30
Run VMG2.774.035.086.016.737.197.598.268.95
Gybe Angles139.0°142.8°146.7°148.0°152.1°155.5°160.1°161.7°156.6°
APH ToD:517.5CDL: 10.544APH ToT: 1.1595CertNo:US61866
BOAT
ClassX 4^3 MKIIDesignerX-Yachts design groupBuilderX YACHTSAge date04/2025Series date07/2021Offset fileX4^3-MKII.offData fileUS61866
HULL
Length Overall12.497 mMaximum Beam3.988 mDraft2.198 mDisplacement10,013 kgDLR6.2592IMS DivisionCruiser/RacerDynamic Allowance0.230%Age Allowance0.163%RS Assessment-0.127%
PROPELLER
InstallationStrutTypeFolding 3 bladesDiameter0.450m
CREW
Maximum weight861 kg(default)Minimum weight731 kg ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail53.3754.23Headsail Luffed42.2442.24Headsail Flying102.59102.59SymmetricAsymmetric171.20171.20 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS Maximum (m²)
Trysail16.26Storm Jib16.02Heavy Weather Jib43.25
SAIL LIMITS
Headsails6Spinnakers5
STABILITY
Righting Moment 218.7 kg·m Stability Index 120.0
COMMENTS
Cushions on, 1 electric winch not used for racing
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  04560004TDV Issued on 17/06/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
International Certificate2026
RINGLEUSA 61866
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 VMG1464.61018.9831.8738.2693.1673.2662.3653.1660.4
52°920.4658.2553.8501.1476.7465.8460.1454.1454.2
60°846.5616.6527.4483.5461.8450.9445.6439.4439.0
75°755.6568.8493.0462.2449.4436.6427.8417.9413.3
90°733.2552.9479.7448.4431.7421.4413.9401.1390.2
110°778.5570.6479.4442.1421.0407.4395.3372.9358.6
120°823.4580.4483.7443.6419.9400.4384.1363.8346.9
135°928.9650.5521.3462.5433.4411.2390.5351.8310.2
150°1124.5773.0614.3518.6464.8438.5419.2384.1349.6
Run VMG1298.4892.6709.3598.9534.9500.7474.6436.1402.2
Selected Courses
Windward / Leeward1381.5955.8770.5668.5614.0586.9568.4544.6531.3
All purpose1027.5726.1597.6532.7498.9480.3467.0447.9435.0
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward644.20.9314
All purpose517.51.1595
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low661.90.9065
Triple Number Coastal/Long Distance Medium513.81.1678
Triple Number Coastal/Long Distance High463.21.2954
Triple Number Windward/Leeward Low863.20.6951
Triple Number Windward/Leeward Medium638.40.9398
Triple Number Windward/Leeward High564.11.0636
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance564.81.0624
Triple Number Coastal/Long Distance Low661.90.9065
Triple Number Coastal/Long Distance Medium513.81.1678
Triple Number Coastal/Long Distance High463.21.2954
Triple Number Windward/Leeward Low863.20.6951
Triple Number Windward/Leeward Medium638.40.9398
Triple Number Windward/Leeward High564.11.0636
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1373.2949.5721.7601.2533.3498.3470.8428.3415.7
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.7969
Downwind "popa"1.0128
70% up, 30% down "Ilhabela"0.8513
30% up, 70% down "Ilhabela-inverso"0.9366
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low661.90.9065
Triple Number Coastal/Long Distance Medium513.81.1678
Triple Number Coastal/Long Distance High463.21.2954
Triple Number Windward/Leeward Low863.20.6951
Triple Number Windward/Leeward Medium638.40.9398
Triple Number Windward/Leeward High564.11.0636
Predominantly Upwind566.21.0598
Predominantly Downwind517.81.1588
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP539.01.1131 Predom. Rc High420.31.4277 5B SF Bay L/M704.60.8515 TriNum AP Low661.90.9065 Predom. Dn Low787.70.7617 5B SF Bay Med605.80.9904 TriNum AP Med513.81.1677 Predom. Dn L/M581.81.0313 5B SF Bay M/H554.61.0818 TriNum AP High463.21.2954 Predom. Dn Med499.81.2004 5B SF Bay High531.21.1295 TriNum W/L Low904.80.6631 Predom. Dn M/H451.91.3276 5B AP Low728.30.8238 TriNum W/L Med638.40.9398 Predom. Dn High422.01.4218 5B AP L/M579.11.0361 TriNum W/L Hig564.11.0636 ChiMac Up Low719.70.8337 5B AP Med507.01.1834 Predom. Upwind591.31.0146 ChiMac Up Med647.70.9264 5B AP M/H468.71.2800 Predom. Reaching508.91.1789 ChiMac Up High564.91.0622 5B AP High449.01.3364 Predom. Downwind541.31.1085 ChiMac Off Low677.90.8851 5B W/L Low1015.90.5906 Predom. Up Low822.40.7296 ChiMac Off Med600.30.9995 5B W/L L/M738.70.8122 Predom. Up L/M621.50.9654 ChiMac Off High509.11.1785 5B W/L Med627.80.9557 Predom. Up Med548.01.0949 ChiMac AP Low694.30.8642 5B W/L M/H571.41.0501 Predom. Up M/H513.11.1693 ChiMac AP Med620.90.9664 5B W/L High546.41.0981 Predom. Up High498.51.2037 ChiMac AP High535.21.1210 W/L 60-40 Low1029.40.5828 Predom. Rc Low701.00.8560 BayMac Cove Island803.30.7470 W/L 60-40 L/M752.20.7977 Predom. Rc L/M536.61.1182 BayMac Shore796.50.7533 W/L 60-40 Med643.50.9324 Predom. Rc Med475.71.2614 Harvest Moon451.21.3298 W/L 60-40 M/H590.11.0167 Predom. Rc M/H441.51.3591 5B SF Bay Low856.70.7004 W/L 60-40 High568.31.0558      SA/DSPL Up20.42SA/DSPL Dn47.97
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance564.81.0624
Triple Number Coastal/Long Distance Low661.90.9065
Triple Number Coastal/Long Distance Medium513.81.1678
Triple Number Coastal/Long Distance High463.21.2954
Triple Number Windward/Leeward Low863.20.6951
Triple Number Windward/Leeward Medium638.40.9398
Triple Number Windward/Leeward High564.11.0636
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1373.2949.5721.7601.2533.3498.3470.8428.3415.7
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance564.81.0624
Triple Number Coastal/Long Distance Low661.90.9065
Triple Number Coastal/Long Distance Medium513.81.1678
Triple Number Coastal/Long Distance High463.21.2954
Triple Number Windward/Leeward Low863.20.6951
Triple Number Windward/Leeward Medium638.40.9398
Triple Number Windward/Leeward High564.11.0636
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1373.2949.5721.7601.2533.3498.3470.8428.3415.7
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance564.8
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1373.2949.5721.7601.2533.3498.3470.8428.3415.7
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low661.90.9065
Triple Number Coastal/Long Distance Medium513.81.1678
Triple Number Coastal/Long Distance High463.21.2954
Triple Number Windward/Leeward Low863.20.6951
Triple Number Windward/Leeward Medium638.40.9398
Triple Number Windward/Leeward High564.11.0636
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating564.81.0624
FinRating, kevyt tuuli995.11.0050
FinRating, kova tuuli452.61.1047
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low661.90.9065
Triple Number Coastal/Long Distance Medium513.81.1678
Triple Number Coastal/Long Distance High463.21.2954
Triple Number Windward/Leeward Low863.20.6951
Triple Number Windward/Leeward Medium638.40.9398
Triple Number Windward/Leeward High564.11.0636
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance1.0624
Triple Number Coastal/Long Distance Low0.9065
Triple Number Coastal/Long Distance Medium1.1678
Triple Number Coastal/Long Distance High1.2954
Triple Number Windward/Leeward Low0.6951
Triple Number Windward/Leeward Medium0.9398
Triple Number Windward/Leeward High1.0636
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1373.2949.5721.7601.2533.3498.3470.8428.3415.7
For information
General Purpose Handicap (GPH)580.1
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance564.81.0624
Triple Number Coastal/Long Distance Low661.90.9065
Triple Number Coastal/Long Distance Medium513.81.1678
Triple Number Coastal/Long Distance High463.21.2954
Triple Number Windward/Leeward Low863.20.6951
Triple Number Windward/Leeward Medium638.40.9398
Triple Number Windward/Leeward High564.11.0636
Saronikos S All Purpose601.10.9982
Saronikos S Upwind680.70.8814
Saronikos S Downwind495.81.2102
Saronikos N All Purpose623.00.9630
Saronikos N Upwind708.80.8465
Saronikos N Downwind531.01.1299
Saronikos SW All Purpose600.90.9985
Saronikos SW Upwind697.00.8609
Saronikos SW Downwind495.91.2100
Saronikos NE All Purpose639.50.9383
Saronikos NE Upwind656.20.9143
Saronikos NE Downwind594.01.0101
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1373.2949.5721.7601.2533.3498.3470.8428.3415.7
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low661.90.9065
Triple Number Coastal/Long Distance Medium513.81.1678
Triple Number Coastal/Long Distance High463.21.2954
Triple Number Windward/Leeward Low863.20.6951
Triple Number Windward/Leeward Medium638.40.9398
Triple Number Windward/Leeward High564.11.0636
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose539.01.1131
5-Band All Purpose Low799.40.7506
5-Band All Purpose L/M599.11.0015
5-Band All Purpose Med522.61.1481
5-Band All Purpose M/H481.91.2450
5-Band All Purpose High460.11.3039
Single Number Predominant Upwind565.41.0611
Single Number Predominant Reaching489.21.2264
Single Number Predominant Downwind518.21.1579
5-Band 50-50 Windward/Leeward Low1015.90.5906
5-Band 50-50 Windward/Leeward L/M738.70.8122
5-Band 50-50 Windward/Leeward Med627.80.9557
5-Band 50-50 Windward/Leeward M/H571.41.0501
5-Band 50-50 Windward/Leeward High546.41.0981
5-Band 60-40 Windward/Leeward Low1029.40.5828
5-Band 60-40 Windward/Leeward L/M752.20.7977
5-Band 60-40 Windward/Leeward Med643.50.9324
5-Band 60-40 Windward/Leeward M/H590.11.0167
5-Band 60-40 Windward/Leeward High568.31.0558
Triple Number 50-50 Windward/Leeward Low904.80.6631
Triple Number 50-50 Windward/Leeward Med638.50.9397
Triple Number 50-50 Windward/Leeward High564.11.0636
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward660.00.9091
Triple Number 60-40 Windward/Leeward Low917.80.6537
Triple Number 60-40 Windward/Leeward Med653.80.9177
Triple Number 60-40 Windward/Leeward High583.61.0281
Triple Number All-Purpose Low718.20.8354
Triple Number All-Purpose Med529.91.1324
Triple Number All-Purpose High475.91.2607
Triple Number Predominant Upwind Low745.00.8054
Triple Number Predominant Upwind Med557.11.0770
Triple Number Predominant Upwind High514.21.1668
Triple Number Predominant Reaching Low639.30.9385
Triple Number Predominant Reaching Med490.61.2230
Triple Number Predominant Reaching High427.01.4053
Triple Number Predominant Downwind Low704.60.8516
Triple Number Predominant Downwind Med507.41.1825
Triple Number Predominant Downwind High434.51.3809
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance564.81.0624
Triple Number Coastal/Long Distance Low661.90.9065
Triple Number Coastal/Long Distance Medium513.81.1678
Triple Number Coastal/Long Distance High463.21.2954
Triple Number Windward/Leeward Low863.20.6951
Triple Number Windward/Leeward Medium638.40.9398
Triple Number Windward/Leeward High564.11.0636
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1373.2949.5721.7601.2533.3498.3470.8428.3415.7
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance564.81.0624
Triple Number Coastal/Long Distance Low661.90.9065
Triple Number Coastal/Long Distance Medium513.81.1678
Triple Number Coastal/Long Distance High463.21.2954
Triple Number Windward/Leeward Low863.20.6951
Triple Number Windward/Leeward Medium638.40.9398
Triple Number Windward/Leeward High564.11.0636
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1373.2949.5721.7601.2533.3498.3470.8428.3415.7
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low661.9
Triple Number Coastal/Long Distance Medium513.8
Triple Number Coastal/Long Distance High463.2
Triple Number Windward/Leeward Low863.2
Triple Number Windward/Leeward Medium638.4
Triple Number Windward/Leeward High564.1
Predominantly Upwind566.2
Predominantly Downwind517.8
Predominantly Reaching496.1
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance564.81.0624
Triple Number Coastal/Long Distance Low661.90.9065
Triple Number Coastal/Long Distance Medium513.81.1678
Triple Number Coastal/Long Distance High463.21.2954
Triple Number Windward/Leeward Low863.20.6951
Triple Number Windward/Leeward Medium638.40.9398
Triple Number Windward/Leeward High564.11.0636
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1373.2949.5721.7601.2533.3498.3470.8428.3415.7
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.9065
Triple Number Coastal/Long Distance Medium1.1678
Triple Number Coastal/Long Distance High1.2954
Triple Number Windward/Leeward Low0.6951
Triple Number Windward/Leeward Medium0.9398
Triple Number Windward/Leeward High1.0636
Coastal/Long Distance1.0624
Predominantly Upwind1.0598
Predominantly Downwind1.1588
For information
General Purpose Handicap (GPH)580.1
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)1.1595
Distanseseilas Trippeltall svak vind0.9065
Distanseseilas Trippeltall mellomvind1.1678
Distanseseilas Trippeltall sterk vind1.2954
Pølsebane Trippeltall svak vind0.6951
Pølsebane Trippeltall mellomvind0.9398
Pølsebane Trippeltall sterk vind1.0636
Motvind Singeltall1.0598
Medvind Singeltall1.1588
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low661.90.9065
Triple Number Coastal/Long Distance Medium513.81.1678
Triple Number Coastal/Long Distance High463.21.2954
Triple Number Windward/Leeward Low863.20.6951
Triple Number Windward/Leeward Medium638.40.9398
Triple Number Windward/Leeward High564.11.0636
Coastal/Long Distance564.81.0624
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind566.21.0598
Predominantly Downwind517.81.1588
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore535.31.1209
Cape Doctor Coastal438.81.3673
Triple Number Coastal/Long Distance Low661.90.9065
Triple Number Coastal/Long Distance Medium513.81.1678
Triple Number Coastal/Long Distance High463.21.2954
Triple Number Windward/Leeward Low863.20.6951
Triple Number Windward/Leeward Medium638.40.9398
Triple Number Windward/Leeward High564.11.0636
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.9065
Triple Number Coastal/Long Distance Medium1.1678
Triple Number Coastal/Long Distance High1.2954
Triple Number Windward/Leeward Low0.6951
Triple Number Windward/Leeward Medium0.9398
Triple Number Windward/Leeward High1.0636
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.9065
Triple Number Coastal/Long Distance Medium1.1678
Triple Number Coastal/Long Distance High1.2954
Triple Number Windward/Leeward Low0.6951
Triple Number Windward/Leeward Medium0.9398
Triple Number Windward/Leeward High1.0636
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance564.81.0624
Triple Number Coastal/Long Distance Low661.90.9065
Triple Number Coastal/Long Distance Medium513.81.1678
Triple Number Coastal/Long Distance High463.21.2954
Triple Number Windward/Leeward Low863.20.6951
Triple Number Windward/Leeward Medium638.40.9398
Triple Number Windward/Leeward High564.11.0636
Predominantly Upwind566.21.0598
Predominantly Downwind517.81.1588
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1373.2949.5721.7601.2533.3498.3470.8428.3415.7
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance564.81.0624
Triple Number Coastal/Long Distance Low661.90.9065
Triple Number Coastal/Long Distance Medium513.81.1678
Triple Number Coastal/Long Distance High463.21.2954
Triple Number Windward/Leeward Low863.20.6951
Triple Number Windward/Leeward Medium638.40.9398
Triple Number Windward/Leeward High564.11.0636
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1373.2949.5721.7601.2533.3498.3470.8428.3415.7
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP539.01.1131 Predom. Dn High422.01.4218 5B AP M/H468.71.2800 TriNum AP Low661.90.9065 Predom. Rc Low701.00.8560 5B AP High449.01.3364 TriNum AP Med513.81.1677 Predom. Rc L/M536.61.1182 5B SF Bay Low856.70.7004 TriNum AP High463.21.2954 Predom. Rc Med475.71.2614 5B SF Bay L/M704.60.8515 TriNum W/L Low904.80.6631 Predom. Rc M/H441.51.3591 5B SF Bay Med605.80.9904 TriNum W/L Med638.40.9398 Predom. Rc High420.31.4277 5B SF Bay M/H554.61.0818 TriNum W/L Hig564.11.0636 5B W/L Low1015.90.5906 5B SF Bay High531.21.1295 Predom. Upwind591.31.0146 5B W/L L/M738.70.8122 ChiMac Up Low719.70.8337 Predom. Reaching508.91.1789 5B W/L Med627.80.9557 ChiMac Up Med647.70.9264 Predom. Downwind541.31.1085 5B W/L M/H571.41.0501 ChiMac Up High564.91.0622 Predom. Up Low822.40.7296 5B W/L High546.41.0981 ChiMac Off Low677.90.8851 Predom. Up L/M621.50.9654 W/L 60-40 Low1029.40.5828 ChiMac Off Med600.30.9995 Predom. Up Med548.01.0949 W/L 60-40 L/M752.20.7977 ChiMac Off High509.11.1785 Predom. Up M/H513.11.1693 W/L 60-40 Med643.50.9324 ChiMac AP Low694.30.8642 Predom. Up High498.51.2037 W/L 60-40 M/H590.11.0167 ChiMac AP Med620.90.9664 Predom. Dn Low787.70.7617 W/L 60-40 High568.31.0558 ChiMac AP High535.21.1210 Predom. Dn L/M581.81.0313 5B AP Low728.30.8238 BayMac Cove Island803.30.7470 Predom. Dn Med499.81.2004 5B AP L/M579.11.0361 BayMac Shore796.50.7533 Predom. Dn M/H451.91.3276 5B AP Med507.01.1834 Harvest Moon451.21.3298      SA/DSPL Up20.42SA/DSPL Dn47.97
ORC Ref  04560004TDV Issued on 17/06/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
International Certificate2026
RINGLEUSA 61866
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassX 4^3 MKIIMeasurement02/02/2025HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall12.497Maximum beam3.988Draft2.198Displacement10,013Wetted area35.98IMS L11.805LSM011.694Accomod. length12.497Sink (kg/mm) 27.09
VCGD0.090VCGM0.149 RM Rated (kg·m) 218.7Limit of positive stability(°) 114.1 Stability Index 120.0 BLR index 0.0000Default crew weight861 Declared crew weight 700
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeFolding 3 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.450PBW0.125PIPA0.0039
EDL2.765ST10.047ST20.195
ST30.200ST40.112ST50.270
RIG
BackstayAdjustableForestayFixedInner forestayNot installedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysNoCheckstaysNoSpreaders2Rotating mastNo
P16.320IG17.398ISP18.113MDT10.151MDL10.244MDT20.140MDL20.150TL0.960MW0.150GO0.284
E5.690J4.790BAS1.835FSD0.042SFJ0.270SPLWPLTPS5.810BD0.250MWTMCG
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS118.1135.810
FLOTATION AND STABILITY
Calculation methodBoom incliningFlotation Date02/02/2025
SFFP0.735FFM1.526FF1.536LCFcl7.063SG1.0130
SAFP12.288FAM1.198FA1.204LCFsh7.319HBI1.347
W1125.1W2125.1W3125.1W4125.1LCFD9.680
PD1236.1PD2235.9PD3236.9PD4236.5
WD5.206PLM9000.00GSA1.0RSA1.0RM217.0
INVENTORY
Fixed Ballast Total0
TANKSIdDescriptionSp.WghtCapacityConditionLCGVCG3PVC waste tank port outboard headWater4504.721.502PVC port setteeWater34006.890.001Alloy stbd setteeFuel2001006.37-0.20Total deductible846.37-0.20
OTHER ITEMSIdKindDescriptionWeightLCGVCG3Battery12V Gp 31 AGM engine battery port aft berth359.870.002Battery2x 12V Gp 31 AGM house batteries CL707.07-0.101Engine (IC)Yanmar 4JH-45Total deductible0
ORC Ref  04560004TDV Issued on 17/06/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
International Certificate2026
RINGLEUSA 61866
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentMain0.181.122.003.494.6453.3706/09/2024ODK110675-001 full-battens
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentCode 650.051.983.866.217.969.2018.45NoYes1102.5916/08/2024ODK110675-004Jib0.090.671.262.453.634.7617.35YesNo 42.2402/08/2024ODK110675-002
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentG220.1917.0018.6011.419.60119%171.2031/07/2024ODK110675-003
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
CRUISER/RACER REQUIREMENTS*
Accommodation length12.5 mTable area0.55 m²Headroom1.83 mMinimum number of berths5Personal gear stowage0.20 m³Fresh water capacity162 lMinimum number of seats in cockpit5Food stowage0.30 m³Fuel capacity100 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.
ORC Ref  04560004TDV Issued on 17/06/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org