International Certificate2026
PRIVATEERUSA 50009
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 Angles45.4°43.5°40.4°37.1°35.6°34.8°34.5°34.5°35.4°
Beat VMG3.494.956.116.757.057.247.387.577.61
52°5.467.588.899.519.8910.1810.4110.8010.97
60°5.898.029.179.8910.3310.6710.9511.4311.69
75°6.278.319.3710.2310.8811.3311.7412.4212.80
90°6.148.219.4110.2311.1712.0112.6213.6914.46
110°5.798.039.3610.5011.5512.4913.2615.0416.81
120°5.427.649.1510.4011.5812.7613.8415.7717.56
135°4.716.858.589.6910.9012.4213.9916.8219.81
150°3.915.727.288.509.4810.5011.8315.4219.63
Run VMG3.384.956.307.368.219.0910.2513.3517.00
Gybe Angles139.5°140.8°142.0°147.4°151.1°146.9°142.0°142.5°147.5°
APH ToD:389.0CDL: 15.661APH ToT: 1.5425CertNo:US7399
BOAT
ClassCookson 50DesignerFARR/COOKSONBuilderCooksonAge date12/2006Series date11/2004Offset fileCOOKSON50-USA50009.offData fileUS6020
HULL
Length Overall15.220 mMaximum Beam4.252 mDraft3.502 mDisplacement7,052 kgDLR2.6971IMS DivisionPerformanceDynamic Allowance0.000%Age Allowance0.650%RS Assessment-0.585%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.475m
CREW
Maximum weight1,095 kg(declared)Minimum weight931 kg ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail97.97100.59Headsail Luffed63.8663.86Headsail FlyingSymmetricAsymmetric263.55263.55 (3 asymmetric(s) with SHW/SFL < 85%)
STORM SAIL AREAS Maximum (m²)
Trysail26.07Storm Jib21.25Heavy Weather Jib57.36
SAIL LIMITS
Headsails8Spinnakers6
STABILITY
Righting Moment 344.6 kg·m Stability Index 122.7
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  04560004V2S Issued on 10/07/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
International Certificate2026
PRIVATEERUSA 50009
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 VMG1032.4727.7589.6533.5510.9497.5488.0475.3473.1
52°659.9475.2405.2378.6364.2353.8345.7333.3328.2
60°611.1448.8392.7364.0348.5337.4328.6314.9307.9
75°574.5433.2384.3352.0331.0317.7306.5289.9281.2
90°585.9438.7382.7351.9322.4299.7285.2263.0249.0
110°621.9448.4384.7342.9311.6288.3271.4239.4214.1
120°664.0471.1393.3346.2310.9282.2260.2228.3205.0
135°764.9525.4419.5371.6330.1289.8257.3214.0181.7
150°921.2629.3494.6423.5379.7342.9304.3233.5183.4
Run VMG1063.8726.7571.1489.0438.3396.0351.3269.6211.7
Selected Courses
Windward / Leeward1048.1727.2580.4511.2474.6446.7419.7372.5342.4
All purpose785.8555.7457.3409.1379.1355.8335.9303.3282.1
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward489.01.2271
All purpose389.01.5425
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low506.51.1845
Triple Number Coastal/Long Distance Medium389.81.5393
Triple Number Coastal/Long Distance High328.71.8256
Triple Number Windward/Leeward Low653.70.9178
Triple Number Windward/Leeward Medium488.61.2279
Triple Number Windward/Leeward High408.71.4679
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance425.21.4113
Triple Number Coastal/Long Distance Low506.51.1845
Triple Number Coastal/Long Distance Medium389.81.5393
Triple Number Coastal/Long Distance High328.71.8256
Triple Number Windward/Leeward Low653.70.9178
Triple Number Windward/Leeward Medium488.61.2279
Triple Number Windward/Leeward High408.71.4679
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1049.6727.1547.5460.9407.1371.2338.9286.2264.9
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"1.0988
Downwind "popa"1.2955
70% up, 30% down "Ilhabela"1.1512
30% up, 70% down "Ilhabela-inverso"1.2295
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low506.51.1845
Triple Number Coastal/Long Distance Medium389.81.5393
Triple Number Coastal/Long Distance High328.71.8256
Triple Number Windward/Leeward Low653.70.9178
Triple Number Windward/Leeward Medium488.61.2279
Triple Number Windward/Leeward High408.71.4679
Predominantly Upwind422.91.4188
Predominantly Downwind396.71.5126
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP401.41.4949 Predom. Rc High281.22.1335 5B SF Bay L/M533.11.1255 TriNum AP Low506.51.1845 Predom. Dn Low623.30.9627 5B SF Bay Med459.41.3060 TriNum AP Med389.81.5392 Predom. Dn L/M458.21.3094 5B SF Bay M/H405.31.4805 TriNum AP High328.71.8256 Predom. Dn Med385.21.5578 5B SF Bay High365.81.6404 TriNum W/L Low686.30.8743 Predom. Dn M/H322.11.8630 5B AP Low564.21.0635 TriNum W/L Med488.61.2279 Predom. Dn High275.62.1767 5B AP L/M443.31.3536 TriNum W/L Hig408.71.4679 ChiMac Up Low535.81.1199 5B AP Med383.11.5663 Predom. Upwind438.61.3679 ChiMac Up Med481.81.2452 5B AP M/H337.41.7781 Predom. Reaching381.91.5713 ChiMac Up High416.71.4398 5B AP High305.21.9656 Predom. Downwind412.41.4550 ChiMac Off Low534.71.1222 5B W/L Low770.70.7785 Predom. Up Low610.00.9837 ChiMac Off Med467.01.2849 5B W/L L/M562.01.0676 Predom. Up L/M465.01.2903 ChiMac Off High382.01.5707 5B W/L Med480.21.2495 Predom. Up Med410.91.4603 ChiMac AP Low532.21.1273 5B W/L M/H420.91.4254 Predom. Up M/H374.51.6023 ChiMac AP Med472.21.2707 5B W/L High375.41.5981 Predom. Up High351.71.7058 ChiMac AP High397.91.5078 W/L 60-40 Low770.40.7788 Predom. Rc Low545.81.0992 BayMac Cove Island613.20.9785 W/L 60-40 L/M565.31.0614 Predom. Rc L/M416.41.4409 BayMac Shore607.70.9873 W/L 60-40 Med487.51.2307 Predom. Rc Med359.41.6696 Harvest Moon327.91.8299 W/L 60-40 M/H434.61.3805 Predom. Rc M/H312.01.9228 5B SF Bay Low646.30.9283 W/L 60-40 High395.81.5160      SA/DSPL Up43.72SA/DSPL Dn97.67
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance425.21.4113
Triple Number Coastal/Long Distance Low506.51.1845
Triple Number Coastal/Long Distance Medium389.81.5393
Triple Number Coastal/Long Distance High328.71.8256
Triple Number Windward/Leeward Low653.70.9178
Triple Number Windward/Leeward Medium488.61.2279
Triple Number Windward/Leeward High408.71.4679
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1049.6727.1547.5460.9407.1371.2338.9286.2264.9
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance425.21.4113
Triple Number Coastal/Long Distance Low506.51.1845
Triple Number Coastal/Long Distance Medium389.81.5393
Triple Number Coastal/Long Distance High328.71.8256
Triple Number Windward/Leeward Low653.70.9178
Triple Number Windward/Leeward Medium488.61.2279
Triple Number Windward/Leeward High408.71.4679
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1049.6727.1547.5460.9407.1371.2338.9286.2264.9
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance425.2
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1049.6727.1547.5460.9407.1371.2338.9286.2264.9
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low506.51.1845
Triple Number Coastal/Long Distance Medium389.81.5393
Triple Number Coastal/Long Distance High328.71.8256
Triple Number Windward/Leeward Low653.70.9178
Triple Number Windward/Leeward Medium488.61.2279
Triple Number Windward/Leeward High408.71.4679
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating425.21.4113
FinRating, kevyt tuuli758.91.3177
FinRating, kova tuuli305.41.6374
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low506.51.1845
Triple Number Coastal/Long Distance Medium389.81.5393
Triple Number Coastal/Long Distance High328.71.8256
Triple Number Windward/Leeward Low653.70.9178
Triple Number Windward/Leeward Medium488.61.2279
Triple Number Windward/Leeward High408.71.4679
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance1.4113
Triple Number Coastal/Long Distance Low1.1845
Triple Number Coastal/Long Distance Medium1.5393
Triple Number Coastal/Long Distance High1.8256
Triple Number Windward/Leeward Low0.9178
Triple Number Windward/Leeward Medium1.2279
Triple Number Windward/Leeward High1.4679
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1049.6727.1547.5460.9407.1371.2338.9286.2264.9
For information
General Purpose Handicap (GPH)438.2
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance425.21.4113
Triple Number Coastal/Long Distance Low506.51.1845
Triple Number Coastal/Long Distance Medium389.81.5393
Triple Number Coastal/Long Distance High328.71.8256
Triple Number Windward/Leeward Low653.70.9178
Triple Number Windward/Leeward Medium488.61.2279
Triple Number Windward/Leeward High408.71.4679
Saronikos S All Purpose437.51.3715
Saronikos S Upwind498.41.2038
Saronikos S Downwind367.01.6350
Saronikos N All Purpose466.61.2860
Saronikos N Upwind519.11.1559
Saronikos N Downwind418.51.4338
Saronikos SW All Purpose439.01.3668
Saronikos SW Upwind511.01.1741
Saronikos SW Downwind374.01.6042
Saronikos NE All Purpose484.21.2391
Saronikos NE Upwind485.51.2357
Saronikos NE Downwind471.21.2734
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1049.6727.1547.5460.9407.1371.2338.9286.2264.9
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low506.51.1845
Triple Number Coastal/Long Distance Medium389.81.5393
Triple Number Coastal/Long Distance High328.71.8256
Triple Number Windward/Leeward Low653.70.9178
Triple Number Windward/Leeward Medium488.61.2279
Triple Number Windward/Leeward High408.71.4679
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose401.41.4949
5-Band All Purpose Low613.10.9786
5-Band All Purpose L/M460.11.3042
5-Band All Purpose Med396.81.5120
5-Band All Purpose M/H347.41.7271
5-Band All Purpose High313.21.9160
Single Number Predominant Upwind421.51.4235
Single Number Predominant Reaching369.31.6247
Single Number Predominant Downwind397.81.5082
5-Band 50-50 Windward/Leeward Low770.70.7785
5-Band 50-50 Windward/Leeward L/M562.01.0676
5-Band 50-50 Windward/Leeward Med480.21.2495
5-Band 50-50 Windward/Leeward M/H420.91.4254
5-Band 50-50 Windward/Leeward High375.41.5981
5-Band 60-40 Windward/Leeward Low770.40.7788
5-Band 60-40 Windward/Leeward L/M565.31.0614
5-Band 60-40 Windward/Leeward Med487.51.2307
5-Band 60-40 Windward/Leeward M/H434.61.3805
5-Band 60-40 Windward/Leeward High395.81.5160
Triple Number 50-50 Windward/Leeward Low686.30.8743
Triple Number 50-50 Windward/Leeward Med488.71.2277
Triple Number 50-50 Windward/Leeward High408.71.4679
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward496.61.2081
Triple Number 60-40 Windward/Leeward Low687.10.8732
Triple Number 60-40 Windward/Leeward Med495.31.2114
Triple Number 60-40 Windward/Leeward High424.11.4147
Triple Number All-Purpose Low550.81.0893
Triple Number All-Purpose Med404.01.4850
Triple Number All-Purpose High338.01.7749
Triple Number Predominant Upwind Low555.81.0796
Triple Number Predominant Upwind Med418.51.4336
Triple Number Predominant Upwind High373.11.6080
Triple Number Predominant Reaching Low496.31.2089
Triple Number Predominant Reaching Med373.71.6056
Triple Number Predominant Reaching High296.32.0249
Triple Number Predominant Downwind Low555.51.0801
Triple Number Predominant Downwind Med395.41.5173
Triple Number Predominant Downwind High301.81.9878
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance425.21.4113
Triple Number Coastal/Long Distance Low506.51.1845
Triple Number Coastal/Long Distance Medium389.81.5393
Triple Number Coastal/Long Distance High328.71.8256
Triple Number Windward/Leeward Low653.70.9178
Triple Number Windward/Leeward Medium488.61.2279
Triple Number Windward/Leeward High408.71.4679
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1049.6727.1547.5460.9407.1371.2338.9286.2264.9
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance425.21.4113
Triple Number Coastal/Long Distance Low506.51.1845
Triple Number Coastal/Long Distance Medium389.81.5393
Triple Number Coastal/Long Distance High328.71.8256
Triple Number Windward/Leeward Low653.70.9178
Triple Number Windward/Leeward Medium488.61.2279
Triple Number Windward/Leeward High408.71.4679
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1049.6727.1547.5460.9407.1371.2338.9286.2264.9
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low506.5
Triple Number Coastal/Long Distance Medium389.8
Triple Number Coastal/Long Distance High328.7
Triple Number Windward/Leeward Low653.7
Triple Number Windward/Leeward Medium488.6
Triple Number Windward/Leeward High408.7
Predominantly Upwind422.9
Predominantly Downwind396.7
Predominantly Reaching375.9
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance425.21.4113
Triple Number Coastal/Long Distance Low506.51.1845
Triple Number Coastal/Long Distance Medium389.81.5393
Triple Number Coastal/Long Distance High328.71.8256
Triple Number Windward/Leeward Low653.70.9178
Triple Number Windward/Leeward Medium488.61.2279
Triple Number Windward/Leeward High408.71.4679
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1049.6727.1547.5460.9407.1371.2338.9286.2264.9
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low1.1845
Triple Number Coastal/Long Distance Medium1.5393
Triple Number Coastal/Long Distance High1.8256
Triple Number Windward/Leeward Low0.9178
Triple Number Windward/Leeward Medium1.2279
Triple Number Windward/Leeward High1.4679
Coastal/Long Distance1.4113
Predominantly Upwind1.4188
Predominantly Downwind1.5126
For information
General Purpose Handicap (GPH)438.2
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)1.5425
Distanseseilas Trippeltall svak vind1.1845
Distanseseilas Trippeltall mellomvind1.5393
Distanseseilas Trippeltall sterk vind1.8256
Pølsebane Trippeltall svak vind0.9178
Pølsebane Trippeltall mellomvind1.2279
Pølsebane Trippeltall sterk vind1.4679
Motvind Singeltall1.4188
Medvind Singeltall1.5126
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low506.51.1845
Triple Number Coastal/Long Distance Medium389.81.5393
Triple Number Coastal/Long Distance High328.71.8256
Triple Number Windward/Leeward Low653.70.9178
Triple Number Windward/Leeward Medium488.61.2279
Triple Number Windward/Leeward High408.71.4679
Coastal/Long Distance425.21.4113
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind422.91.4188
Predominantly Downwind396.71.5126
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore351.41.7072
Cape Doctor Coastal288.42.0803
Triple Number Coastal/Long Distance Low506.51.1845
Triple Number Coastal/Long Distance Medium389.81.5393
Triple Number Coastal/Long Distance High328.71.8256
Triple Number Windward/Leeward Low653.70.9178
Triple Number Windward/Leeward Medium488.61.2279
Triple Number Windward/Leeward High408.71.4679
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low1.1845
Triple Number Coastal/Long Distance Medium1.5393
Triple Number Coastal/Long Distance High1.8256
Triple Number Windward/Leeward Low0.9178
Triple Number Windward/Leeward Medium1.2279
Triple Number Windward/Leeward High1.4679
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low1.1845
Triple Number Coastal/Long Distance Medium1.5393
Triple Number Coastal/Long Distance High1.8256
Triple Number Windward/Leeward Low0.9178
Triple Number Windward/Leeward Medium1.2279
Triple Number Windward/Leeward High1.4679
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance425.21.4113
Triple Number Coastal/Long Distance Low506.51.1845
Triple Number Coastal/Long Distance Medium389.81.5393
Triple Number Coastal/Long Distance High328.71.8256
Triple Number Windward/Leeward Low653.70.9178
Triple Number Windward/Leeward Medium488.61.2279
Triple Number Windward/Leeward High408.71.4679
Predominantly Upwind422.91.4188
Predominantly Downwind396.71.5126
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1049.6727.1547.5460.9407.1371.2338.9286.2264.9
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance425.21.4113
Triple Number Coastal/Long Distance Low506.51.1845
Triple Number Coastal/Long Distance Medium389.81.5393
Triple Number Coastal/Long Distance High328.71.8256
Triple Number Windward/Leeward Low653.70.9178
Triple Number Windward/Leeward Medium488.61.2279
Triple Number Windward/Leeward High408.71.4679
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1049.6727.1547.5460.9407.1371.2338.9286.2264.9
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP401.41.4949 Predom. Dn High275.62.1767 5B AP M/H337.41.7781 TriNum AP Low506.51.1845 Predom. Rc Low545.81.0992 5B AP High305.21.9656 TriNum AP Med389.81.5392 Predom. Rc L/M416.41.4409 5B SF Bay Low646.30.9283 TriNum AP High328.71.8256 Predom. Rc Med359.41.6696 5B SF Bay L/M533.11.1255 TriNum W/L Low686.30.8743 Predom. Rc M/H312.01.9228 5B SF Bay Med459.41.3060 TriNum W/L Med488.61.2279 Predom. Rc High281.22.1335 5B SF Bay M/H405.31.4805 TriNum W/L Hig408.71.4679 5B W/L Low770.70.7785 5B SF Bay High365.81.6404 Predom. Upwind438.61.3679 5B W/L L/M562.01.0676 ChiMac Up Low535.81.1199 Predom. Reaching381.91.5713 5B W/L Med480.21.2495 ChiMac Up Med481.81.2452 Predom. Downwind412.41.4550 5B W/L M/H420.91.4254 ChiMac Up High416.71.4398 Predom. Up Low610.00.9837 5B W/L High375.41.5981 ChiMac Off Low534.71.1222 Predom. Up L/M465.01.2903 W/L 60-40 Low770.40.7788 ChiMac Off Med467.01.2849 Predom. Up Med410.91.4603 W/L 60-40 L/M565.31.0614 ChiMac Off High382.01.5707 Predom. Up M/H374.51.6023 W/L 60-40 Med487.51.2307 ChiMac AP Low532.21.1273 Predom. Up High351.71.7058 W/L 60-40 M/H434.61.3805 ChiMac AP Med472.21.2707 Predom. Dn Low623.30.9627 W/L 60-40 High395.81.5160 ChiMac AP High397.91.5078 Predom. Dn L/M458.21.3094 5B AP Low564.21.0635 BayMac Cove Island613.20.9785 Predom. Dn Med385.21.5578 5B AP L/M443.31.3536 BayMac Shore607.70.9873 Predom. Dn M/H322.11.8630 5B AP Med383.11.5663 Harvest Moon327.91.8299      SA/DSPL Up43.72SA/DSPL Dn97.67
ORC Ref  04560004V2S Issued on 10/07/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
International Certificate2026
PRIVATEERUSA 50009
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassCookson 50Measurement28/05/2026HINPlan reviewHull constructionCarbonCarbon rudderYesLight stanchionsNoTrim tabNo
Length overall15.220Maximum beam4.252Draft3.502Displacement7,052Wetted area40.37IMS L14.238LSM013.775Accomod. length13.819Sink (kg/mm) 29.77
VCGD-0.889VCGM-0.883 RM Rated (kg·m) 344.6Limit of positive stability(°) 123.8 Stability Index 122.7 BLR index 1.1034Default crew weight1,087 Declared crew weight 1,095
Centerboard weightList angle16.2Canting keel angle35.0
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.475PBW0.121PIPA0.0041
EDL2.225ST10.054ST20.201
ST30.201ST40.114ST50.300
RIG
BackstayNot installedForestayFixedInner forestayNot installedMast materialCarbonSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingYesBase of mastFixedRunning backstaysYesCheckstaysYes (NMP)Spreaders3Rotating mastNo
P20.660IG20.375ISP22.615MDT10.132MDL10.280MDT20.098MDL20.175TL2.200MW0.280GO0.347
E7.210J5.810BAS1.985FSD0.040SFJ0.230SPLWPLTPS8.655BD0.300MWT242.00MCG6.800
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS122.6158.655
FLOTATION AND STABILITY
Calculation methodPoles incliningFlotation Date28/05/2026CommentCalm, 0-3kts
SFFP0.861FFM1.564FF1.563LCFcl8.246SG1.0217
SAFP15.150FAM1.187FA1.192LCFsh8.496HBI1.388
W1170.6W2170.6W3170.6W4170.6
PD1489.2PD2489.2PD3489.2PD4489.2
WD12.585PLM9000.00GSA1.0RSA1.0RM345.6
INVENTORY
Fixed Ballast Total0
TANKSIdDescriptionSp.WghtCapacityConditionLCGVCG3PVC Water Tank, Stbd GalleyWater3307.950.002PVC Water Tank, Stbd GalleyWater3307.750.001PVC Fuel Tank on CLFuel834212.150.00Total deductible3512.150.00
OTHER ITEMSIdKindDescriptionWeightLCGVCG3BatteryStarter, 12V 55Ah, Group 24, Port Settee177.400.002BatteryHouse, 12V 105Ah, Group 31, Port Settee317.400.001Engine (IC)Yanmar 4JH4ETotal deductible0
ORC Ref  04560004V2S Issued on 10/07/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
International Certificate2026
PRIVATEERUSA 50009
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentMn-91.752.503.464.946.1497.9702/04/2025OUS147242-001
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentJ1.5-40.160.991.753.154.556.1520.29YesNo 63.8630/01/2024OUS155918-001J2-100.160.961.723.124.556.1420.25YesNo 63.4025/06/2025J3.5-30.100.861.593.004.486.1019.57YesNo 59.5927/01/2024OUS155918-003SS-50.080.801.723.294.736.0517.84NoInner 56.6002/01/2022OUS147087-003J4-40.100.771.462.874.385.9917.80YesNo 52.3910/05/2018OUS130085-002GS-70.620.991.382.092.783.4913.63YesInner 27.8303/11/2025OUS160606-002
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentA2P-325.1121.7523.4313.5013.49100%263.5521/04/2025OUS152157-001A2-1024.5321.5323.0313.5213.7898%260.4721/04/2025OUS147087-002A1.5-524.6121.9023.2613.0414.2192%257.2413/03/2025OUS160606-007A3.5-224.6722.3423.5111.0213.8080%226.7415/11/2018OUS131136-001MH0-323.6021.9322.779.0711.9776%183.0724/04/2025OUS133418-002Fr0-321.4619.5020.488.2410.9275%149.7824/04/2025OUS155918-004
NON MANUAL POWER CONTROLS (NMP)
SheetsYesMainsail cunninghamNoJib trackNoSpinnaker retrieverYes (NMP)BoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerYesHalyardsYes
ORC Ref  04560004V2S Issued on 10/07/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org