International Certificate2026
NORTHERN SPYNED 131
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 Angles46.7°44.1°42.2°40.4°39.4°38.9°38.6°39.2°40.2°
Beat VMG2.763.904.745.315.575.705.775.835.76
52°4.366.007.107.748.008.128.198.288.28
60°4.746.357.387.968.248.358.438.548.55
75°5.056.617.578.128.458.668.788.989.08
90°4.936.497.568.208.558.809.069.389.63
110°4.556.267.518.268.759.169.499.9910.43
120°4.296.057.358.158.669.139.5910.4611.10
135°3.765.426.717.678.298.769.2410.2911.77
150°3.104.535.756.797.658.248.709.6110.72
Run VMG2.683.934.985.886.707.387.938.799.63
Gybe Angles138.4°142.0°146.0°151.9°155.6°162.6°168.2°175.0°170.9°
APH ToD:499.2CDL: 11.529APH ToT: 1.2018CertNo:US7022
BOAT
ClassDUFOUR 45 E TRDesignerFELICI/ROSEOBuilderDUFOURAge date01/2009Series date01/2008Offset fileDUFOUR45E.offData fileUS7022
HULL
Length Overall13.600 mMaximum Beam4.308 mDraft2.294 mDisplacement10,561 kgDLR5.8718IMS DivisionCruiser/RacerDynamic Allowance0.020%Age Allowance0.585%RS Assessment-0.127%
PROPELLER
InstallationStrutTypeFolding 3 bladesDiameter0.480m
CREW
Maximum weight1,020 kg(declared)Minimum weight867 kg ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail62.2563.48Headsail Luffed69.1669.16Headsail FlyingSymmetric146.58146.58Asymmetric143.73143.73 (1 asymmetric(s) with SHW/SFL < 85%)
STORM SAIL AREAS Maximum (m²)
Trysail18.55Storm Jib16.64Heavy Weather Jib44.92
SAIL LIMITS
Headsails7Spinnakers5
✱ Asymmetric may be tacked on the pole
STABILITY
Righting Moment 318.7 kg·m Stability Index 114.5
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  04560004QUK Issued on 22/05/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
International Certificate2026
NORTHERN SPYNED 131
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 VMG1306.2923.9759.2677.6646.3631.8624.0617.7625.0
52°825.6600.4507.1465.4449.9443.4439.3434.9434.8
60°759.5566.9487.5452.0437.1430.9426.9421.6421.2
75°713.0544.9475.5443.5426.1415.8410.0401.1396.5
90°730.0554.4476.3439.0420.9408.9397.5383.6373.9
110°791.9575.4479.5435.8411.4393.0379.4360.4345.1
120°839.2594.6489.7441.9415.7394.4375.3344.3324.3
135°957.4664.6536.7469.1434.2410.8389.7349.7306.0
150°1163.0793.9626.5530.5470.6436.7413.9374.5335.8
Run VMG1342.9916.7723.5611.7537.7487.9453.7409.5373.8
Selected Courses
Windward / Leeward1324.5920.3741.3644.7592.0559.8538.8513.6499.4
All purpose990.0703.6578.6514.9482.0462.0448.0428.3414.3
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward618.20.9705
All purpose499.21.2018
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low641.10.9359
Triple Number Coastal/Long Distance Medium496.01.2096
Triple Number Coastal/Long Distance High444.11.3510
Triple Number Windward/Leeward Low830.80.7222
Triple Number Windward/Leeward Medium613.90.9773
Triple Number Windward/Leeward High534.61.1223
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance544.91.1011
Triple Number Coastal/Long Distance Low641.10.9359
Triple Number Coastal/Long Distance Medium496.01.2096
Triple Number Coastal/Long Distance High444.11.3510
Triple Number Windward/Leeward Low830.80.7222
Triple Number Windward/Leeward Medium613.90.9773
Triple Number Windward/Leeward High534.61.1223
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1326.4919.9697.1580.8515.2480.0452.3408.4394.6
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.8606
Downwind "popa"1.0143
70% up, 30% down "Ilhabela"0.9016
30% up, 70% down "Ilhabela-inverso"0.9627
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low641.10.9359
Triple Number Coastal/Long Distance Medium496.01.2096
Triple Number Coastal/Long Distance High444.11.3510
Triple Number Windward/Leeward Low830.80.7222
Triple Number Windward/Leeward Medium613.90.9773
Triple Number Windward/Leeward High534.61.1223
Predominantly Upwind538.21.1148
Predominantly Downwind510.31.1758
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP520.11.1536 Predom. Rc High404.71.4826 5B SF Bay L/M676.10.8875 TriNum AP Low641.10.9359 Predom. Dn Low786.70.7627 5B SF Bay Med581.51.0318 TriNum AP Med496.11.2095 Predom. Dn L/M578.61.0369 5B SF Bay M/H528.91.1345 TriNum AP High444.11.3510 Predom. Dn Med492.21.2189 5B SF Bay High504.21.1900 TriNum W/L Low870.50.6892 Predom. Dn M/H438.01.3699 5B AP Low711.50.8432 TriNum W/L Med613.90.9773 Predom. Dn High405.41.4801 5B AP L/M560.31.0709 TriNum W/L Hig534.61.1223 ChiMac Up Low676.90.8864 5B AP Med489.31.2263 Predom. Upwind560.31.0708 ChiMac Up Med611.30.9815 5B AP M/H449.91.3336 Predom. Reaching495.91.2100 ChiMac Up High536.01.1194 5B AP High429.31.3977 Predom. Downwind533.41.1248 ChiMac Off Low675.20.8887 5B W/L Low976.60.6144 Predom. Up Low770.90.7784 ChiMac Off Med594.91.0086 5B W/L L/M711.60.8432 Predom. Up L/M587.01.0222 ChiMac Off High500.01.2000 5B W/L Med603.30.9944 Predom. Up Med521.11.1515 ChiMac AP Low672.20.8925 5B W/L M/H542.61.1058 Predom. Up M/H489.51.2257 ChiMac AP Med600.40.9993 5B W/L High515.51.1639 Predom. Up High475.51.2619 ChiMac AP High516.41.1620 W/L 60-40 Low977.00.6141 Predom. Rc Low687.80.8723 BayMac Cove Island775.60.7736 W/L 60-40 L/M716.90.8370 Predom. Rc L/M525.31.1421 BayMac Shore768.30.7809 W/L 60-40 Med614.00.9772 Predom. Rc Med463.21.2952 Harvest Moon437.81.3705 W/L 60-40 M/H559.31.0728 Predom. Rc M/H427.01.4052 5B SF Bay Low820.10.7317 W/L 60-40 High536.41.1185      SA/DSPL Up27.09SA/DSPL Dn43.04
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance544.91.1011
Triple Number Coastal/Long Distance Low641.10.9359
Triple Number Coastal/Long Distance Medium496.01.2096
Triple Number Coastal/Long Distance High444.11.3510
Triple Number Windward/Leeward Low830.80.7222
Triple Number Windward/Leeward Medium613.90.9773
Triple Number Windward/Leeward High534.61.1223
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1326.4919.9697.1580.8515.2480.0452.3408.4394.6
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance544.91.1011
Triple Number Coastal/Long Distance Low641.10.9359
Triple Number Coastal/Long Distance Medium496.01.2096
Triple Number Coastal/Long Distance High444.11.3510
Triple Number Windward/Leeward Low830.80.7222
Triple Number Windward/Leeward Medium613.90.9773
Triple Number Windward/Leeward High534.61.1223
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1326.4919.9697.1580.8515.2480.0452.3408.4394.6
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance544.9
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1326.4919.9697.1580.8515.2480.0452.3408.4394.6
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low641.10.9359
Triple Number Coastal/Long Distance Medium496.01.2096
Triple Number Coastal/Long Distance High444.11.3510
Triple Number Windward/Leeward Low830.80.7222
Triple Number Windward/Leeward Medium613.90.9773
Triple Number Windward/Leeward High534.61.1223
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating544.91.1011
FinRating, kevyt tuuli960.31.0414
FinRating, kova tuuli431.61.1585
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low641.10.9359
Triple Number Coastal/Long Distance Medium496.01.2096
Triple Number Coastal/Long Distance High444.11.3510
Triple Number Windward/Leeward Low830.80.7222
Triple Number Windward/Leeward Medium613.90.9773
Triple Number Windward/Leeward High534.61.1223
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance1.1011
Triple Number Coastal/Long Distance Low0.9359
Triple Number Coastal/Long Distance Medium1.2096
Triple Number Coastal/Long Distance High1.3510
Triple Number Windward/Leeward Low0.7222
Triple Number Windward/Leeward Medium0.9773
Triple Number Windward/Leeward High1.1223
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1326.4919.9697.1580.8515.2480.0452.3408.4394.6
For information
General Purpose Handicap (GPH)560.2
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance544.91.1011
Triple Number Coastal/Long Distance Low641.10.9359
Triple Number Coastal/Long Distance Medium496.01.2096
Triple Number Coastal/Long Distance High444.11.3510
Triple Number Windward/Leeward Low830.80.7222
Triple Number Windward/Leeward Medium613.90.9773
Triple Number Windward/Leeward High534.61.1223
Saronikos S All Purpose567.41.0575
Saronikos S Upwind632.40.9488
Saronikos S Downwind489.81.2249
Saronikos N All Purpose596.61.0057
Saronikos N Upwind660.30.9087
Saronikos N Downwind535.11.1213
Saronikos SW All Purpose570.81.0511
Saronikos SW Upwind648.40.9253
Saronikos SW Downwind495.31.2114
Saronikos NE All Purpose618.10.9707
Saronikos NE Upwind617.70.9714
Saronikos NE Downwind601.10.9981
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1326.4919.9697.1580.8515.2480.0452.3408.4394.6
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low641.10.9359
Triple Number Coastal/Long Distance Medium496.01.2096
Triple Number Coastal/Long Distance High444.11.3510
Triple Number Windward/Leeward Low830.80.7222
Triple Number Windward/Leeward Medium613.90.9773
Triple Number Windward/Leeward High534.61.1223
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose520.11.1536
5-Band All Purpose Low774.20.7750
5-Band All Purpose L/M580.81.0331
5-Band All Purpose Med505.51.1870
5-Band All Purpose M/H462.91.2960
5-Band All Purpose High440.01.3636
Single Number Predominant Upwind536.81.1177
Single Number Predominant Reaching477.11.2576
Single Number Predominant Downwind511.11.1739
5-Band 50-50 Windward/Leeward Low976.60.6144
5-Band 50-50 Windward/Leeward L/M711.60.8432
5-Band 50-50 Windward/Leeward Med603.30.9944
5-Band 50-50 Windward/Leeward M/H542.61.1058
5-Band 50-50 Windward/Leeward High515.51.1639
5-Band 60-40 Windward/Leeward Low977.00.6141
5-Band 60-40 Windward/Leeward L/M716.90.8370
5-Band 60-40 Windward/Leeward Med614.00.9772
5-Band 60-40 Windward/Leeward M/H559.31.0728
5-Band 60-40 Windward/Leeward High536.41.1185
Triple Number 50-50 Windward/Leeward Low870.50.6892
Triple Number 50-50 Windward/Leeward Med614.00.9771
Triple Number 50-50 Windward/Leeward High534.61.1223
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward628.80.9542
Triple Number 60-40 Windward/Leeward Low872.40.6878
Triple Number 60-40 Windward/Leeward Med623.80.9619
Triple Number 60-40 Windward/Leeward High552.41.0861
Triple Number All-Purpose Low696.10.8620
Triple Number All-Purpose Med512.71.1703
Triple Number All-Purpose High456.61.3140
Triple Number Predominant Upwind Low702.40.8542
Triple Number Predominant Upwind Med529.11.1339
Triple Number Predominant Upwind High490.01.2244
Triple Number Predominant Reaching Low626.00.9585
Triple Number Predominant Reaching Med476.91.2581
Triple Number Predominant Reaching High413.21.4520
Triple Number Predominant Downwind Low701.80.8550
Triple Number Predominant Downwind Med502.31.1946
Triple Number Predominant Downwind High421.01.4251
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance544.91.1011
Triple Number Coastal/Long Distance Low641.10.9359
Triple Number Coastal/Long Distance Medium496.01.2096
Triple Number Coastal/Long Distance High444.11.3510
Triple Number Windward/Leeward Low830.80.7222
Triple Number Windward/Leeward Medium613.90.9773
Triple Number Windward/Leeward High534.61.1223
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1326.4919.9697.1580.8515.2480.0452.3408.4394.6
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance544.91.1011
Triple Number Coastal/Long Distance Low641.10.9359
Triple Number Coastal/Long Distance Medium496.01.2096
Triple Number Coastal/Long Distance High444.11.3510
Triple Number Windward/Leeward Low830.80.7222
Triple Number Windward/Leeward Medium613.90.9773
Triple Number Windward/Leeward High534.61.1223
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1326.4919.9697.1580.8515.2480.0452.3408.4394.6
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low641.1
Triple Number Coastal/Long Distance Medium496.0
Triple Number Coastal/Long Distance High444.1
Triple Number Windward/Leeward Low830.8
Triple Number Windward/Leeward Medium613.9
Triple Number Windward/Leeward High534.6
Predominantly Upwind538.2
Predominantly Downwind510.3
Predominantly Reaching486.5
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance544.91.1011
Triple Number Coastal/Long Distance Low641.10.9359
Triple Number Coastal/Long Distance Medium496.01.2096
Triple Number Coastal/Long Distance High444.11.3510
Triple Number Windward/Leeward Low830.80.7222
Triple Number Windward/Leeward Medium613.90.9773
Triple Number Windward/Leeward High534.61.1223
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1326.4919.9697.1580.8515.2480.0452.3408.4394.6
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.9359
Triple Number Coastal/Long Distance Medium1.2096
Triple Number Coastal/Long Distance High1.3510
Triple Number Windward/Leeward Low0.7222
Triple Number Windward/Leeward Medium0.9773
Triple Number Windward/Leeward High1.1223
Coastal/Long Distance1.1011
Predominantly Upwind1.1148
Predominantly Downwind1.1758
For information
General Purpose Handicap (GPH)560.2
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)1.2018
Distanseseilas Trippeltall svak vind0.9359
Distanseseilas Trippeltall mellomvind1.2096
Distanseseilas Trippeltall sterk vind1.3510
Pølsebane Trippeltall svak vind0.7222
Pølsebane Trippeltall mellomvind0.9773
Pølsebane Trippeltall sterk vind1.1223
Motvind Singeltall1.1148
Medvind Singeltall1.1758
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low641.10.9359
Triple Number Coastal/Long Distance Medium496.01.2096
Triple Number Coastal/Long Distance High444.11.3510
Triple Number Windward/Leeward Low830.80.7222
Triple Number Windward/Leeward Medium613.90.9773
Triple Number Windward/Leeward High534.61.1223
Coastal/Long Distance544.91.1011
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind538.21.1148
Predominantly Downwind510.31.1758
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore503.61.1913
Cape Doctor Coastal418.51.4337
Triple Number Coastal/Long Distance Low641.10.9359
Triple Number Coastal/Long Distance Medium496.01.2096
Triple Number Coastal/Long Distance High444.11.3510
Triple Number Windward/Leeward Low830.80.7222
Triple Number Windward/Leeward Medium613.90.9773
Triple Number Windward/Leeward High534.61.1223
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.9359
Triple Number Coastal/Long Distance Medium1.2096
Triple Number Coastal/Long Distance High1.3510
Triple Number Windward/Leeward Low0.7222
Triple Number Windward/Leeward Medium0.9773
Triple Number Windward/Leeward High1.1223
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.9359
Triple Number Coastal/Long Distance Medium1.2096
Triple Number Coastal/Long Distance High1.3510
Triple Number Windward/Leeward Low0.7222
Triple Number Windward/Leeward Medium0.9773
Triple Number Windward/Leeward High1.1223
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance544.91.1011
Triple Number Coastal/Long Distance Low641.10.9359
Triple Number Coastal/Long Distance Medium496.01.2096
Triple Number Coastal/Long Distance High444.11.3510
Triple Number Windward/Leeward Low830.80.7222
Triple Number Windward/Leeward Medium613.90.9773
Triple Number Windward/Leeward High534.61.1223
Predominantly Upwind538.21.1148
Predominantly Downwind510.31.1758
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1326.4919.9697.1580.8515.2480.0452.3408.4394.6
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance544.91.1011
Triple Number Coastal/Long Distance Low641.10.9359
Triple Number Coastal/Long Distance Medium496.01.2096
Triple Number Coastal/Long Distance High444.11.3510
Triple Number Windward/Leeward Low830.80.7222
Triple Number Windward/Leeward Medium613.90.9773
Triple Number Windward/Leeward High534.61.1223
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1326.4919.9697.1580.8515.2480.0452.3408.4394.6
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP520.11.1536 Predom. Dn High405.41.4801 5B AP M/H449.91.3336 TriNum AP Low641.10.9359 Predom. Rc Low687.80.8723 5B AP High429.31.3977 TriNum AP Med496.11.2095 Predom. Rc L/M525.31.1421 5B SF Bay Low820.10.7317 TriNum AP High444.11.3510 Predom. Rc Med463.21.2952 5B SF Bay L/M676.10.8875 TriNum W/L Low870.50.6892 Predom. Rc M/H427.01.4052 5B SF Bay Med581.51.0318 TriNum W/L Med613.90.9773 Predom. Rc High404.71.4826 5B SF Bay M/H528.91.1345 TriNum W/L Hig534.61.1223 5B W/L Low976.60.6144 5B SF Bay High504.21.1900 Predom. Upwind560.31.0708 5B W/L L/M711.60.8432 ChiMac Up Low676.90.8864 Predom. Reaching495.91.2100 5B W/L Med603.30.9944 ChiMac Up Med611.30.9815 Predom. Downwind533.41.1248 5B W/L M/H542.61.1058 ChiMac Up High536.01.1194 Predom. Up Low770.90.7784 5B W/L High515.51.1639 ChiMac Off Low675.20.8887 Predom. Up L/M587.01.0222 W/L 60-40 Low977.00.6141 ChiMac Off Med594.91.0086 Predom. Up Med521.11.1515 W/L 60-40 L/M716.90.8370 ChiMac Off High500.01.2000 Predom. Up M/H489.51.2257 W/L 60-40 Med614.00.9772 ChiMac AP Low672.20.8925 Predom. Up High475.51.2619 W/L 60-40 M/H559.31.0728 ChiMac AP Med600.40.9993 Predom. Dn Low786.70.7627 W/L 60-40 High536.41.1185 ChiMac AP High516.41.1620 Predom. Dn L/M578.61.0369 5B AP Low711.50.8432 BayMac Cove Island775.60.7736 Predom. Dn Med492.21.2189 5B AP L/M560.31.0709 BayMac Shore768.30.7809 Predom. Dn M/H438.01.3699 5B AP Med489.31.2263 Harvest Moon437.81.3705      SA/DSPL Up27.09SA/DSPL Dn43.04
ORC Ref  04560004QUK Issued on 22/05/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
International Certificate2026
NORTHERN SPYNED 131
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassDUFOUR 45 E TRMeasurement26/05/2016HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall13.600Maximum beam4.308Draft2.294Displacement10,561Wetted area39.83IMS L12.384LSM012.160Accomod. length13.600Sink (kg/mm) 30.80
VCGD0.085VCGM0.209 RM Rated (kg·m) 318.7Limit of positive stability(°) 110.1 Stability Index 114.5 BLR index 0.0000Default crew weight910 Declared crew weight 1,020
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeFolding 3 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.480PBW0.110PIPA0.0042
EDL3.160ST10.060ST20.175
ST30.175ST40.108ST50.340
RIG
BackstayAdjustableForestayFixedInner forestayNot installedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysNoCheckstaysNoSpreaders3Rotating mastNo
P17.200IG18.166ISP19.019MDT10.140MDL10.250MDT20.140MDL20.180TL2.130MW0.260GO0.280
E6.160J4.980BAS1.810FSD0.035SFJ0.370SPL5.326WPLTPSBD0.220MWTMCG
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS118.1661.810
FLOTATION AND STABILITY
Calculation methodPoles incliningFlotation Date26/05/2016
SFFP0.474FFM1.600FF1.610LCFcl7.439SG1.0000
SAFP13.084FAM1.303FA1.311LCFsh7.732HBI1.408
W1145.1W2145.1W3145.1W4145.1
PD1224.0PD2224.0PD3224.0PD4224.0
WD13.870PLM2029.30GSA91.6RSA6939.8RM314.9
INVENTORY
Fixed Ballast Total0
TANKSIdDescriptionSp.WghtCapacityConditionLCGVCG1Fuel for C/R CreditFuel2500Total deductible0
Total deductible
ORC Ref  04560004QUK Issued on 22/05/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
International Certificate2026
NORTHERN SPYNED 131
US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment20221-10.171.232.243.935.1362.2503/02/2021
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentGen-250.101.001.923.805.717.6918.05NoNo 69.1611/03/2025
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment15458118.7218.7218.729.499.02146.5811/05/2021Q-S-2
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment15458019.4517.4518.459.299.5897%143.7316/05/2021Q-A-32022118.5016.8817.697.9710.6075%125.2502/02/2021CODE ZERO
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
CRUISER/RACER REQUIREMENTS*
Accommodation length13.6 mTable area0.66 m²Headroom1.87 mMinimum number of berths6Personal gear stowage0.24 m³Fresh water capacity228 lMinimum number of seats in cockpit6Food stowage0.36 m³Fuel capacity122 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.
ORC Ref  04560004QUK Issued on 22/05/2026 Valid until 28/02/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org