Club Certificate2026
Dikke DruyffNED 4496
Watersportverbond
www.watersportverbond.nl
Wedstrijdsport@watersportverbond.nl
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°44.5°42.4°40.9°40.4°40.3°40.5°40.5°41.1°
Beat VMG1.962.903.614.134.514.784.955.105.11
52°3.104.475.426.116.646.997.217.417.46
60°3.354.745.686.376.907.237.437.667.72
75°3.524.925.876.597.117.447.667.928.07
90°3.685.196.287.077.537.757.888.078.31
110°3.795.366.507.297.748.038.288.628.86
120°3.675.216.357.187.688.008.288.839.20
135°3.204.685.826.757.407.808.118.699.26
150°2.673.965.065.976.737.307.678.208.70
Run VMG2.313.434.385.175.836.346.767.417.89
Gybe Angles140.8°144.4°147.4°148.0°149.2°152.3°157.4°164.3°178.9°
APH ToD:592.5CDL: 9.027APH ToT: 1.0126CertNo:
BOAT
ClassKoopmans 44DesignerD. KoopmansBuilderJ.Tholen, Oisterwijk NederlandAge date01/1997Series date01/1997Offset fileFrisian_46.offData fileNED4496
HULL
Length Overall13.413 mMaximum Beam4.080 mDraft2.146 mDisplacement16,784 kgDLR12.5681IMS DivisionCruiser/RacerDynamic Allowance0.720%Age Allowance0.650%RS Assessment-0.254%
PROPELLER
InstallationIn ApertureTypeFeathering 3 bladesDiameter0.533m
CREW
Maximum weight320 kg(declared)Minimum weight190 kg ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail44.4545.09Headsail Luffed49.2849.28Headsail FlyingSymmetricAsymmetric142.14142.14 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS Maximum (m²)
Trysail12.93Storm Jib13.29Heavy Weather Jib35.87
SAIL LIMITS
Headsails5
✱ Woven polyester sails
Spinnakers4
STABILITY
Righting Moment 303.2 kg·m Stability Index 143.9
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  04310004JUJ Issued on 01/04/2026 Valid until 31/03/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
Dikke DruyffNED 4496
Watersportverbond
www.watersportverbond.nl
Wedstrijdsport@watersportverbond.nl
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 VMG1833.91242.9997.4871.9797.8752.6727.1705.7704.8
52°1161.2805.7663.9589.7542.3514.9499.6485.6482.4
60°1073.7759.8634.2565.2522.1497.9484.4470.2466.3
75°1022.3732.0613.8545.9506.1483.8470.1454.5445.9
90°978.5693.0573.0509.1478.4464.5456.8446.1433.1
110°949.9672.2554.1493.9465.4448.2434.9417.4406.2
120°981.1690.9567.4501.2468.9449.8434.5407.6391.2
135°1123.3770.1618.4533.5486.7461.5444.1414.1388.6
150°1350.7909.5711.6603.4534.9493.5469.2439.3413.7
Run VMG1559.71050.2821.7696.8617.7568.2532.5485.9456.0
Selected Courses
Windward / Leeward1696.81146.5909.5784.4707.7660.4629.8595.8580.4
All purpose1278.2878.9709.5619.4567.1536.3516.7493.8481.4
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward742.30.8083
All purpose592.51.0126
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low794.20.7555
Triple Number Coastal/Long Distance Medium588.71.0192
Triple Number Coastal/Long Distance High513.01.1695
Triple Number Windward/Leeward Low1028.10.5836
Triple Number Windward/Leeward Medium738.30.8127
Triple Number Windward/Leeward High624.70.9605
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance647.70.9264
Triple Number Coastal/Long Distance Low794.20.7555
Triple Number Coastal/Long Distance Medium588.71.0192
Triple Number Coastal/Long Distance High513.01.1695
Triple Number Windward/Leeward Low1028.10.5836
Triple Number Windward/Leeward Medium738.30.8127
Triple Number Windward/Leeward High624.70.9605
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1683.11136.9851.9701.9608.7557.1521.4471.8458.5
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.6890
Downwind "popa"0.8800
70% up, 30% down "Ilhabela"0.7370
30% up, 70% down "Ilhabela-inverso"0.8124
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low794.20.7555
Triple Number Coastal/Long Distance Medium588.71.0192
Triple Number Coastal/Long Distance High513.01.1695
Triple Number Windward/Leeward Low1028.10.5836
Triple Number Windward/Leeward Medium738.30.8127
Triple Number Windward/Leeward High624.70.9605
Predominantly Upwind651.50.9210
Predominantly Downwind595.51.0075
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP617.40.9718 Predom. Rc High469.11.2790 5B SF Bay L/M830.90.7221 TriNum AP Low794.20.7555 Predom. Dn Low948.50.6326 5B SF Bay Med696.30.8617 TriNum AP Med588.81.0191 Predom. Dn L/M681.40.8805 5B SF Bay M/H617.10.9723 TriNum AP High513.01.1695 Predom. Dn Med570.51.0517 5B SF Bay High584.51.0265 TriNum W/L Low1082.40.5543 Predom. Dn M/H506.41.1849 5B AP Low886.10.6772 TriNum W/L Med738.30.8127 Predom. Dn High474.71.2640 5B AP L/M681.60.8802 TriNum W/L Hig624.70.9605 ChiMac Up Low865.90.6929 5B AP Med578.31.0375 Predom. Upwind684.50.8765 ChiMac Up Med764.40.7849 5B AP M/H520.41.1530 Predom. Reaching588.21.0201 ChiMac Up High646.70.9278 5B AP High495.61.2106 Predom. Downwind626.00.9585 ChiMac Off Low804.90.7454 5B W/L Low1224.90.4899 Predom. Up Low1007.50.5955 ChiMac Off Med703.20.8532 5B W/L L/M870.50.6892 Predom. Up L/M735.70.8156 ChiMac Off High584.51.0265 5B W/L Med722.90.8300 Predom. Up Med626.40.9578 ChiMac AP Low830.60.7224 5B W/L M/H635.80.9437 Predom. Up M/H566.71.0588 ChiMac AP Med730.30.8216 5B W/L High599.01.0016 Predom. Up High544.31.1024 ChiMac AP High613.30.9783 W/L 60-40 Low1245.70.4816 Predom. Rc Low859.40.6981 BayMac Cove Island965.80.6213 W/L 60-40 L/M888.40.6754 Predom. Rc L/M630.80.9512 BayMac Shore958.80.6258 W/L 60-40 Med741.00.8098 Predom. Rc Med539.61.1120 Harvest Moon510.31.1757 W/L 60-40 M/H655.40.9155 Predom. Rc M/H491.21.2216 5B SF Bay Low1027.50.5840 W/L 60-40 High621.10.9661      SA/DSPL Up14.17SA/DSPL Dn28.20
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance647.70.9264
Triple Number Coastal/Long Distance Low794.20.7555
Triple Number Coastal/Long Distance Medium588.71.0192
Triple Number Coastal/Long Distance High513.01.1695
Triple Number Windward/Leeward Low1028.10.5836
Triple Number Windward/Leeward Medium738.30.8127
Triple Number Windward/Leeward High624.70.9605
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1683.11136.9851.9701.9608.7557.1521.4471.8458.5
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance647.70.9264
Triple Number Coastal/Long Distance Low794.20.7555
Triple Number Coastal/Long Distance Medium588.71.0192
Triple Number Coastal/Long Distance High513.01.1695
Triple Number Windward/Leeward Low1028.10.5836
Triple Number Windward/Leeward Medium738.30.8127
Triple Number Windward/Leeward High624.70.9605
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1683.11136.9851.9701.9608.7557.1521.4471.8458.5
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance647.7
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1683.11136.9851.9701.9608.7557.1521.4471.8458.5
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low794.20.7555
Triple Number Coastal/Long Distance Medium588.71.0192
Triple Number Coastal/Long Distance High513.01.1695
Triple Number Windward/Leeward Low1028.10.5836
Triple Number Windward/Leeward Medium738.30.8127
Triple Number Windward/Leeward High624.70.9605
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating647.70.9264
FinRating, kevyt tuuli1205.40.8296
FinRating, kova tuuli499.01.0019
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low794.20.7555
Triple Number Coastal/Long Distance Medium588.71.0192
Triple Number Coastal/Long Distance High513.01.1695
Triple Number Windward/Leeward Low1028.10.5836
Triple Number Windward/Leeward Medium738.30.8127
Triple Number Windward/Leeward High624.70.9605
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance0.9264
Triple Number Coastal/Long Distance Low0.7555
Triple Number Coastal/Long Distance Medium1.0192
Triple Number Coastal/Long Distance High1.1695
Triple Number Windward/Leeward Low0.5836
Triple Number Windward/Leeward Medium0.8127
Triple Number Windward/Leeward High0.9605
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1683.11136.9851.9701.9608.7557.1521.4471.8458.5
For information
General Purpose Handicap (GPH)671.8
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance647.70.9264
Triple Number Coastal/Long Distance Low794.20.7555
Triple Number Coastal/Long Distance Medium588.71.0192
Triple Number Coastal/Long Distance High513.01.1695
Triple Number Windward/Leeward Low1028.10.5836
Triple Number Windward/Leeward Medium738.30.8127
Triple Number Windward/Leeward High624.70.9605
Saronikos S All Purpose704.40.8518
Saronikos S Upwind809.80.7409
Saronikos S Downwind569.91.0528
Saronikos N All Purpose727.60.8247
Saronikos N Upwind845.00.7101
Saronikos N Downwind615.80.9744
Saronikos SW All Purpose712.70.8418
Saronikos SW Upwind841.00.7135
Saronikos SW Downwind573.91.0455
Saronikos NE All Purpose755.50.7942
Saronikos NE Upwind789.00.7605
Saronikos NE Downwind696.50.8614
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1683.11136.9851.9701.9608.7557.1521.4471.8458.5
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low794.20.7555
Triple Number Coastal/Long Distance Medium588.71.0192
Triple Number Coastal/Long Distance High513.01.1695
Triple Number Windward/Leeward Low1028.10.5836
Triple Number Windward/Leeward Medium738.30.8127
Triple Number Windward/Leeward High624.70.9605
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose617.40.9718
5-Band All Purpose Low972.70.6168
5-Band All Purpose L/M705.50.8505
5-Band All Purpose Med596.61.0057
5-Band All Purpose M/H535.71.1200
5-Band All Purpose High509.21.1783
Single Number Predominant Upwind651.00.9216
Single Number Predominant Reaching560.71.0701
Single Number Predominant Downwind595.41.0078
5-Band 50-50 Windward/Leeward Low1224.90.4899
5-Band 50-50 Windward/Leeward L/M870.50.6892
5-Band 50-50 Windward/Leeward Med722.90.8300
5-Band 50-50 Windward/Leeward M/H635.80.9437
5-Band 50-50 Windward/Leeward High599.01.0016
5-Band 60-40 Windward/Leeward Low1245.70.4816
5-Band 60-40 Windward/Leeward L/M888.40.6754
5-Band 60-40 Windward/Leeward Med741.00.8098
5-Band 60-40 Windward/Leeward M/H655.40.9155
5-Band 60-40 Windward/Leeward High621.10.9661
Triple Number 50-50 Windward/Leeward Low1082.40.5543
Triple Number 50-50 Windward/Leeward Med738.40.8126
Triple Number 50-50 Windward/Leeward High624.70.9605
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward760.70.7888
Triple Number 60-40 Windward/Leeward Low1101.70.5446
Triple Number 60-40 Windward/Leeward Med756.30.7934
Triple Number 60-40 Windward/Leeward High644.80.9305
Triple Number All-Purpose Low864.90.6937
Triple Number All-Purpose Med607.70.9874
Triple Number All-Purpose High527.91.1366
Triple Number Predominant Upwind Low903.40.6641
Triple Number Predominant Upwind Med641.30.9356
Triple Number Predominant Upwind High564.51.0629
Triple Number Predominant Reaching Low773.40.7758
Triple Number Predominant Reaching Med560.01.0714
Triple Number Predominant Reaching High474.91.2636
Triple Number Predominant Downwind Low841.60.7129
Triple Number Predominant Downwind Med581.11.0325
Triple Number Predominant Downwind High487.81.2300
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance647.70.9264
Triple Number Coastal/Long Distance Low794.20.7555
Triple Number Coastal/Long Distance Medium588.71.0192
Triple Number Coastal/Long Distance High513.01.1695
Triple Number Windward/Leeward Low1028.10.5836
Triple Number Windward/Leeward Medium738.30.8127
Triple Number Windward/Leeward High624.70.9605
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1683.11136.9851.9701.9608.7557.1521.4471.8458.5
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance647.70.9264
Triple Number Coastal/Long Distance Low794.20.7555
Triple Number Coastal/Long Distance Medium588.71.0192
Triple Number Coastal/Long Distance High513.01.1695
Triple Number Windward/Leeward Low1028.10.5836
Triple Number Windward/Leeward Medium738.30.8127
Triple Number Windward/Leeward High624.70.9605
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1683.11136.9851.9701.9608.7557.1521.4471.8458.5
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low794.2
Triple Number Coastal/Long Distance Medium588.7
Triple Number Coastal/Long Distance High513.0
Triple Number Windward/Leeward Low1028.1
Triple Number Windward/Leeward Medium738.3
Triple Number Windward/Leeward High624.7
Predominantly Upwind651.5
Predominantly Downwind595.5
Predominantly Reaching569.2
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance647.70.9264
Triple Number Coastal/Long Distance Low794.20.7555
Triple Number Coastal/Long Distance Medium588.71.0192
Triple Number Coastal/Long Distance High513.01.1695
Triple Number Windward/Leeward Low1028.10.5836
Triple Number Windward/Leeward Medium738.30.8127
Triple Number Windward/Leeward High624.70.9605
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1683.11136.9851.9701.9608.7557.1521.4471.8458.5
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7555
Triple Number Coastal/Long Distance Medium1.0192
Triple Number Coastal/Long Distance High1.1695
Triple Number Windward/Leeward Low0.5836
Triple Number Windward/Leeward Medium0.8127
Triple Number Windward/Leeward High0.9605
Coastal/Long Distance0.9264
Predominantly Upwind0.9210
Predominantly Downwind1.0075
For information
General Purpose Handicap (GPH)671.8
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)1.0126
Distanseseilas Trippeltall svak vind0.7555
Distanseseilas Trippeltall mellomvind1.0192
Distanseseilas Trippeltall sterk vind1.1695
Pølsebane Trippeltall svak vind0.5836
Pølsebane Trippeltall mellomvind0.8127
Pølsebane Trippeltall sterk vind0.9605
Motvind Singeltall0.9210
Medvind Singeltall1.0075
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low794.20.7555
Triple Number Coastal/Long Distance Medium588.71.0192
Triple Number Coastal/Long Distance High513.01.1695
Triple Number Windward/Leeward Low1028.10.5836
Triple Number Windward/Leeward Medium738.30.8127
Triple Number Windward/Leeward High624.70.9605
Coastal/Long Distance647.70.9264
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind651.50.9210
Predominantly Downwind595.51.0075
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore585.01.0256
Cape Doctor Coastal485.11.2369
Triple Number Coastal/Long Distance Low794.20.7555
Triple Number Coastal/Long Distance Medium588.71.0192
Triple Number Coastal/Long Distance High513.01.1695
Triple Number Windward/Leeward Low1028.10.5836
Triple Number Windward/Leeward Medium738.30.8127
Triple Number Windward/Leeward High624.70.9605
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7555
Triple Number Coastal/Long Distance Medium1.0192
Triple Number Coastal/Long Distance High1.1695
Triple Number Windward/Leeward Low0.5836
Triple Number Windward/Leeward Medium0.8127
Triple Number Windward/Leeward High0.9605
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7555
Triple Number Coastal/Long Distance Medium1.0192
Triple Number Coastal/Long Distance High1.1695
Triple Number Windward/Leeward Low0.5836
Triple Number Windward/Leeward Medium0.8127
Triple Number Windward/Leeward High0.9605
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance647.70.9264
Triple Number Coastal/Long Distance Low794.20.7555
Triple Number Coastal/Long Distance Medium588.71.0192
Triple Number Coastal/Long Distance High513.01.1695
Triple Number Windward/Leeward Low1028.10.5836
Triple Number Windward/Leeward Medium738.30.8127
Triple Number Windward/Leeward High624.70.9605
Predominantly Upwind651.50.9210
Predominantly Downwind595.51.0075
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1683.11136.9851.9701.9608.7557.1521.4471.8458.5
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance647.70.9264
Triple Number Coastal/Long Distance Low794.20.7555
Triple Number Coastal/Long Distance Medium588.71.0192
Triple Number Coastal/Long Distance High513.01.1695
Triple Number Windward/Leeward Low1028.10.5836
Triple Number Windward/Leeward Medium738.30.8127
Triple Number Windward/Leeward High624.70.9605
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1683.11136.9851.9701.9608.7557.1521.4471.8458.5
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP617.40.9718 Predom. Dn High474.71.2640 5B AP M/H520.41.1530 TriNum AP Low794.20.7555 Predom. Rc Low859.40.6981 5B AP High495.61.2106 TriNum AP Med588.81.0191 Predom. Rc L/M630.80.9512 5B SF Bay Low1027.50.5840 TriNum AP High513.01.1695 Predom. Rc Med539.61.1120 5B SF Bay L/M830.90.7221 TriNum W/L Low1082.40.5543 Predom. Rc M/H491.21.2216 5B SF Bay Med696.30.8617 TriNum W/L Med738.30.8127 Predom. Rc High469.11.2790 5B SF Bay M/H617.10.9723 TriNum W/L Hig624.70.9605 5B W/L Low1224.90.4899 5B SF Bay High584.51.0265 Predom. Upwind684.50.8765 5B W/L L/M870.50.6892 ChiMac Up Low865.90.6929 Predom. Reaching588.21.0201 5B W/L Med722.90.8300 ChiMac Up Med764.40.7849 Predom. Downwind626.00.9585 5B W/L M/H635.80.9437 ChiMac Up High646.70.9278 Predom. Up Low1007.50.5955 5B W/L High599.01.0016 ChiMac Off Low804.90.7454 Predom. Up L/M735.70.8156 W/L 60-40 Low1245.70.4816 ChiMac Off Med703.20.8532 Predom. Up Med626.40.9578 W/L 60-40 L/M888.40.6754 ChiMac Off High584.51.0265 Predom. Up M/H566.71.0588 W/L 60-40 Med741.00.8098 ChiMac AP Low830.60.7224 Predom. Up High544.31.1024 W/L 60-40 M/H655.40.9155 ChiMac AP Med730.30.8216 Predom. Dn Low948.50.6326 W/L 60-40 High621.10.9661 ChiMac AP High613.30.9783 Predom. Dn L/M681.40.8805 5B AP Low886.10.6772 BayMac Cove Island965.80.6213 Predom. Dn Med570.51.0517 5B AP L/M681.60.8802 BayMac Shore958.80.6258 Predom. Dn M/H506.41.1849 5B AP Med578.31.0375 Harvest Moon510.31.1757      SA/DSPL Up14.17SA/DSPL Dn28.20
ORC Ref  04310004JUJ Issued on 01/04/2026 Valid until 31/03/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
Dikke DruyffNED 4496
Watersportverbond
www.watersportverbond.nl
Wedstrijdsport@watersportverbond.nl
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassKoopmans 44Measurement20/05/2024HINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall13.413Maximum beam4.080Draft2.146Displacement16,784Wetted area48.22IMS L11.048LSM011.011Accomod. length13.260Sink (kg/mm) 28.22
VCGD-0.217VCGM-0.203 RM Rated (kg·m) 303.2Limit of positive stability(°) 133.7 Stability Index 143.9 BLR index 0.0000Default crew weight790 Declared crew weight 320
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeFeathering 3 blades
InstallationIn ApertureTwin screwNoHydro generatorNo
PRD0.533PBWPIPA0.0138
APHAPTAPB
RIG
BackstayFixedForestayFixedInner forestayFixedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysYesCheckstaysNoSpreaders2Rotating mastNo
P16.050IG16.300ISP16.500MDT10.120MDL10.250MDT2MDL2TLTaperMWGO
E4.600J5.400BAS1.650FSDSFJSPLWPLTPS6.700BDMWTMCG
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date20/05/2024
SFFP0.500FFM1.767FF1.767LCFcl7.518SG
SAFP13.280FAM1.287FA1.287LCFsh7.793HBI1.408
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  04310004JUJ Issued on 01/04/2026 Valid until 31/03/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
Dikke DruyffNED 4496
Watersportverbond
www.watersportverbond.nl
Wedstrijdsport@watersportverbond.nl
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.020.941.712.994.0344.45
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment10.010.741.473.034.706.4515.80YesNo 49.28
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment116.9014.5015.7010.7811.2096%142.14
NON MANUAL POWER CONTROLS (NMP)
SheetsYesMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
CRUISER/RACER REQUIREMENTS*
Accommodation length13.3 mTable area0.66 m²Headroom1.86 mMinimum number of berths6Personal gear stowage0.24 m³Fresh water capacity219 lMinimum number of seats in cockpit6Food stowage0.36 m³Fuel capacity116 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.
ORC Ref  04310004JUJ Issued on 01/04/2026 Valid until 31/03/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org