Double HandedClub Certificate2026
Humming BirdNED 5804
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 Angles45.6°42.3°40.4°39.3°38.9°38.8°38.9°39.5°41.3°
Beat VMG2.303.223.834.194.344.404.434.414.27
52°3.594.845.616.016.206.286.326.356.31
60°3.845.075.806.186.376.466.516.576.56
75°4.025.235.956.336.556.706.806.926.98
90°3.915.165.936.386.626.837.027.317.50
110°3.705.106.006.486.817.117.377.697.79
120°3.534.915.866.416.767.107.478.038.33
135°3.054.395.406.126.556.917.298.098.91
150°2.513.714.755.616.216.606.947.748.55
Run VMG2.173.224.124.905.576.086.487.137.87
Gybe Angles142.0°146.7°151.4°155.6°163.3°171.4°178.1°177.7°177.7°
APH ToD:631.2CDL: 6.981APH ToT: 0.9506CertNo:none
BOAT
ClassHB 31Designerv.d.Stadt & PrtnrsBuilderHunter BoatsAge date01/1984Series date10/1983Offset fileH128.BOFData fileNED5804
HULL
Length Overall9.255 mMaximum Beam3.070 mDraft1.751 mDisplacement3,047 kgDLR8.1053IMS DivisionCruiser/RacerDynamic Allowance0.240%Age Allowance0.650%RS Assessment-0.254%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameter0.381m
CREW
Maximum weight170 kg(default)Minimum weight120 kg ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail25.4925.89Headsail Luffed21.4021.40Headsail FlyingSymmetric47.2247.22Asymmetric
STORM SAIL AREAS Maximum (m²)
Trysail7.90Storm Jib5.09Heavy Weather Jib13.72
SAIL LIMITS
Headsails5Spinnakers4
STABILITY
Righting Moment 55.4 kg·m Stability Index 111.4
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  04310004JNW Issued on 01/04/2026 Valid until 31/03/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Double HandedClub Certificate2026
Humming BirdNED 5804
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 VMG1564.41119.7940.5859.8829.7818.0813.3816.4843.6
52°1001.9744.6642.0598.9581.0573.7569.7566.5570.6
60°936.7710.7620.2582.4564.8557.0552.6547.9549.0
75°895.2688.2605.1568.8549.3537.0529.4519.9515.8
90°920.6698.3606.7563.9544.0526.9512.9492.5480.0
110°973.7706.3600.1555.5528.8506.5488.6468.1462.3
120°1020.8733.2614.0561.9532.2506.9482.2448.4432.2
135°1181.6820.9667.0588.3549.3521.3493.8445.2404.2
150°1435.8969.4757.5641.4579.5545.1518.5465.4421.2
Run VMG1657.91119.4873.8735.2645.9591.6555.5504.8457.5
Selected Courses
Windward / Leeward1611.11119.6907.2797.5737.8704.8684.4660.6650.6
All purpose1211.2864.5718.7647.7611.5590.0574.6553.1543.4
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward770.00.7793
All purpose631.20.9506
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low791.60.7580
Triple Number Coastal/Long Distance Medium627.10.9568
Triple Number Coastal/Long Distance High570.41.0519
Triple Number Windward/Leeward Low1013.30.5921
Triple Number Windward/Leeward Medium763.60.7858
Triple Number Windward/Leeward High680.60.8816
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance684.70.8763
Triple Number Coastal/Long Distance Low791.60.7580
Triple Number Coastal/Long Distance Medium627.10.9568
Triple Number Coastal/Long Distance High570.41.0519
Triple Number Windward/Leeward Low1013.30.5921
Triple Number Windward/Leeward Medium763.60.7858
Triple Number Windward/Leeward High680.60.8816
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1615.81119.6855.6724.0651.7612.3579.9526.2513.5
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.6777
Downwind "popa"0.8356
70% up, 30% down "Ilhabela"0.7184
30% up, 70% down "Ilhabela-inverso"0.7810
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low791.60.7580
Triple Number Coastal/Long Distance Medium627.10.9568
Triple Number Coastal/Long Distance High570.41.0519
Triple Number Windward/Leeward Low1013.30.5921
Triple Number Windward/Leeward Medium763.60.7858
Triple Number Windward/Leeward High680.60.8816
Predominantly Upwind683.50.8779
Predominantly Downwind636.10.9432
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP656.80.9135 Predom. Rc High521.01.1517 5B SF Bay L/M835.20.7184 TriNum AP Low791.60.7580 Predom. Dn Low969.00.6192 5B SF Bay Med730.00.8220 TriNum AP Med627.20.9567 Predom. Dn L/M716.70.8372 5B SF Bay M/H675.20.8886 TriNum AP High570.41.0519 Predom. Dn Med615.20.9753 5B SF Bay High652.10.9201 TriNum W/L Low1062.20.5649 Predom. Dn M/H552.91.0851 5B AP Low878.40.6830 TriNum W/L Med763.60.7858 Predom. Dn High515.71.1634 5B AP L/M699.30.8580 TriNum W/L Hig680.60.8816 ChiMac Up Low840.90.7135 5B AP Med619.70.9682 Predom. Upwind710.10.8449 ChiMac Up Med767.60.7816 5B AP M/H576.71.0404 Predom. Reaching627.90.9556 ChiMac Up High683.20.8782 5B AP High555.21.0808 Predom. Downwind665.50.9016 ChiMac Off Low834.10.7193 5B W/L Low1189.40.5045 Predom. Up Low946.90.6337 ChiMac Off Med738.20.8128 5B W/L L/M874.80.6859 Predom. Up L/M736.70.8144 ChiMac Off High624.70.9604 5B W/L Med751.90.7980 Predom. Up Med664.80.9026 ChiMac AP Low833.40.7199 5B W/L M/H688.30.8717 Predom. Up M/H631.60.9499 ChiMac AP Med750.00.8000 5B W/L High663.00.9050 Predom. Up High619.30.9689 ChiMac AP High652.10.9201 W/L 60-40 Low1188.70.5048 Predom. Rc Low853.40.7031 BayMac Cove Island957.10.6269 W/L 60-40 L/M884.20.6785 Predom. Rc L/M660.80.9080 BayMac Shore948.50.6326 W/L 60-40 Med769.60.7796 Predom. Rc Med589.51.0178 Harvest Moon556.11.0790 W/L 60-40 M/H713.90.8405 Predom. Rc M/H547.01.0970 5B SF Bay Low1000.80.5995 W/L 60-40 High694.50.8640      SA/DSPL Up22.23SA/DSPL Dn34.47
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance684.70.8763
Triple Number Coastal/Long Distance Low791.60.7580
Triple Number Coastal/Long Distance Medium627.10.9568
Triple Number Coastal/Long Distance High570.41.0519
Triple Number Windward/Leeward Low1013.30.5921
Triple Number Windward/Leeward Medium763.60.7858
Triple Number Windward/Leeward High680.60.8816
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1615.81119.6855.6724.0651.7612.3579.9526.2513.5
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance684.70.8763
Triple Number Coastal/Long Distance Low791.60.7580
Triple Number Coastal/Long Distance Medium627.10.9568
Triple Number Coastal/Long Distance High570.41.0519
Triple Number Windward/Leeward Low1013.30.5921
Triple Number Windward/Leeward Medium763.60.7858
Triple Number Windward/Leeward High680.60.8816
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1615.81119.6855.6724.0651.7612.3579.9526.2513.5
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance684.7
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1615.81119.6855.6724.0651.7612.3579.9526.2513.5
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low791.60.7580
Triple Number Coastal/Long Distance Medium627.10.9568
Triple Number Coastal/Long Distance High570.41.0519
Triple Number Windward/Leeward Low1013.30.5921
Triple Number Windward/Leeward Medium763.60.7858
Triple Number Windward/Leeward High680.60.8816
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating684.70.8763
FinRating, kevyt tuuli1172.30.8530
FinRating, kova tuuli558.50.8953
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low791.60.7580
Triple Number Coastal/Long Distance Medium627.10.9568
Triple Number Coastal/Long Distance High570.41.0519
Triple Number Windward/Leeward Low1013.30.5921
Triple Number Windward/Leeward Medium763.60.7858
Triple Number Windward/Leeward High680.60.8816
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance0.8763
Triple Number Coastal/Long Distance Low0.7580
Triple Number Coastal/Long Distance Medium0.9568
Triple Number Coastal/Long Distance High1.0519
Triple Number Windward/Leeward Low0.5921
Triple Number Windward/Leeward Medium0.7858
Triple Number Windward/Leeward High0.8816
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1615.81119.6855.6724.0651.7612.3579.9526.2513.5
For information
General Purpose Handicap (GPH)704.0
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance684.70.8763
Triple Number Coastal/Long Distance Low791.60.7580
Triple Number Coastal/Long Distance Medium627.10.9568
Triple Number Coastal/Long Distance High570.41.0519
Triple Number Windward/Leeward Low1013.30.5921
Triple Number Windward/Leeward Medium763.60.7858
Triple Number Windward/Leeward High680.60.8816
Saronikos S All Purpose710.40.8446
Saronikos S Upwind796.50.7533
Saronikos S Downwind606.10.9899
Saronikos N All Purpose750.20.7998
Saronikos N Upwind830.70.7223
Saronikos N Downwind663.30.9045
Saronikos SW All Purpose713.60.8408
Saronikos SW Upwind810.60.7402
Saronikos SW Downwind618.20.9705
Saronikos NE All Purpose775.40.7738
Saronikos NE Upwind779.20.7701
Saronikos NE Downwind745.20.8052
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1615.81119.6855.6724.0651.7612.3579.9526.2513.5
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low791.60.7580
Triple Number Coastal/Long Distance Medium627.10.9568
Triple Number Coastal/Long Distance High570.41.0519
Triple Number Windward/Leeward Low1013.30.5921
Triple Number Windward/Leeward Medium763.60.7858
Triple Number Windward/Leeward High680.60.8816
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose656.80.9135
5-Band All Purpose Low953.10.6295
5-Band All Purpose L/M724.60.8281
5-Band All Purpose Med638.70.9394
5-Band All Purpose M/H591.41.0146
5-Band All Purpose High566.81.0585
Single Number Predominant Upwind681.70.8801
Single Number Predominant Reaching605.20.9915
Single Number Predominant Downwind637.40.9414
5-Band 50-50 Windward/Leeward Low1189.40.5045
5-Band 50-50 Windward/Leeward L/M874.80.6859
5-Band 50-50 Windward/Leeward Med751.90.7980
5-Band 50-50 Windward/Leeward M/H688.30.8717
5-Band 50-50 Windward/Leeward High663.00.9050
5-Band 60-40 Windward/Leeward Low1188.70.5048
5-Band 60-40 Windward/Leeward L/M884.20.6785
5-Band 60-40 Windward/Leeward Med769.60.7796
5-Band 60-40 Windward/Leeward M/H713.90.8405
5-Band 60-40 Windward/Leeward High694.50.8640
Triple Number 50-50 Windward/Leeward Low1062.20.5649
Triple Number 50-50 Windward/Leeward Med763.70.7857
Triple Number 50-50 Windward/Leeward High680.60.8816
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward787.30.7621
Triple Number 60-40 Windward/Leeward Low1064.80.5635
Triple Number 60-40 Windward/Leeward Med780.10.7691
Triple Number 60-40 Windward/Leeward High707.60.8480
Triple Number All-Purpose Low859.80.6978
Triple Number All-Purpose Med646.90.9276
Triple Number All-Purpose High584.41.0267
Triple Number Predominant Upwind Low868.30.6910
Triple Number Predominant Upwind Med673.50.8908
Triple Number Predominant Upwind High635.10.9447
Triple Number Predominant Reaching Low778.90.7703
Triple Number Predominant Reaching Med605.80.9905
Triple Number Predominant Reaching High530.31.1315
Triple Number Predominant Downwind Low865.50.6933
Triple Number Predominant Downwind Med625.30.9595
Triple Number Predominant Downwind High530.81.1305
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance684.70.8763
Triple Number Coastal/Long Distance Low791.60.7580
Triple Number Coastal/Long Distance Medium627.10.9568
Triple Number Coastal/Long Distance High570.41.0519
Triple Number Windward/Leeward Low1013.30.5921
Triple Number Windward/Leeward Medium763.60.7858
Triple Number Windward/Leeward High680.60.8816
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1615.81119.6855.6724.0651.7612.3579.9526.2513.5
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance684.70.8763
Triple Number Coastal/Long Distance Low791.60.7580
Triple Number Coastal/Long Distance Medium627.10.9568
Triple Number Coastal/Long Distance High570.41.0519
Triple Number Windward/Leeward Low1013.30.5921
Triple Number Windward/Leeward Medium763.60.7858
Triple Number Windward/Leeward High680.60.8816
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1615.81119.6855.6724.0651.7612.3579.9526.2513.5
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low791.6
Triple Number Coastal/Long Distance Medium627.1
Triple Number Coastal/Long Distance High570.4
Triple Number Windward/Leeward Low1013.3
Triple Number Windward/Leeward Medium763.6
Triple Number Windward/Leeward High680.6
Predominantly Upwind683.5
Predominantly Downwind636.1
Predominantly Reaching613.3
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance684.70.8763
Triple Number Coastal/Long Distance Low791.60.7580
Triple Number Coastal/Long Distance Medium627.10.9568
Triple Number Coastal/Long Distance High570.41.0519
Triple Number Windward/Leeward Low1013.30.5921
Triple Number Windward/Leeward Medium763.60.7858
Triple Number Windward/Leeward High680.60.8816
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1615.81119.6855.6724.0651.7612.3579.9526.2513.5
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7580
Triple Number Coastal/Long Distance Medium0.9568
Triple Number Coastal/Long Distance High1.0519
Triple Number Windward/Leeward Low0.5921
Triple Number Windward/Leeward Medium0.7858
Triple Number Windward/Leeward High0.8816
Coastal/Long Distance0.8763
Predominantly Upwind0.8779
Predominantly Downwind0.9432
For information
General Purpose Handicap (GPH)704.0
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)0.9506
Distanseseilas Trippeltall svak vind0.7580
Distanseseilas Trippeltall mellomvind0.9568
Distanseseilas Trippeltall sterk vind1.0519
Pølsebane Trippeltall svak vind0.5921
Pølsebane Trippeltall mellomvind0.7858
Pølsebane Trippeltall sterk vind0.8816
Motvind Singeltall0.8779
Medvind Singeltall0.9432
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low791.60.7580
Triple Number Coastal/Long Distance Medium627.10.9568
Triple Number Coastal/Long Distance High570.41.0519
Triple Number Windward/Leeward Low1013.30.5921
Triple Number Windward/Leeward Medium763.60.7858
Triple Number Windward/Leeward High680.60.8816
Coastal/Long Distance684.70.8763
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind683.50.8779
Predominantly Downwind636.10.9432
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore653.60.9180
Cape Doctor Coastal546.31.0982
Triple Number Coastal/Long Distance Low791.60.7580
Triple Number Coastal/Long Distance Medium627.10.9568
Triple Number Coastal/Long Distance High570.41.0519
Triple Number Windward/Leeward Low1013.30.5921
Triple Number Windward/Leeward Medium763.60.7858
Triple Number Windward/Leeward High680.60.8816
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7580
Triple Number Coastal/Long Distance Medium0.9568
Triple Number Coastal/Long Distance High1.0519
Triple Number Windward/Leeward Low0.5921
Triple Number Windward/Leeward Medium0.7858
Triple Number Windward/Leeward High0.8816
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7580
Triple Number Coastal/Long Distance Medium0.9568
Triple Number Coastal/Long Distance High1.0519
Triple Number Windward/Leeward Low0.5921
Triple Number Windward/Leeward Medium0.7858
Triple Number Windward/Leeward High0.8816
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance684.70.8763
Triple Number Coastal/Long Distance Low791.60.7580
Triple Number Coastal/Long Distance Medium627.10.9568
Triple Number Coastal/Long Distance High570.41.0519
Triple Number Windward/Leeward Low1013.30.5921
Triple Number Windward/Leeward Medium763.60.7858
Triple Number Windward/Leeward High680.60.8816
Predominantly Upwind683.50.8779
Predominantly Downwind636.10.9432
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1615.81119.6855.6724.0651.7612.3579.9526.2513.5
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance684.70.8763
Triple Number Coastal/Long Distance Low791.60.7580
Triple Number Coastal/Long Distance Medium627.10.9568
Triple Number Coastal/Long Distance High570.41.0519
Triple Number Windward/Leeward Low1013.30.5921
Triple Number Windward/Leeward Medium763.60.7858
Triple Number Windward/Leeward High680.60.8816
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1615.81119.6855.6724.0651.7612.3579.9526.2513.5
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP656.80.9135 Predom. Dn High515.71.1634 5B AP M/H576.71.0404 TriNum AP Low791.60.7580 Predom. Rc Low853.40.7031 5B AP High555.21.0808 TriNum AP Med627.20.9567 Predom. Rc L/M660.80.9080 5B SF Bay Low1000.80.5995 TriNum AP High570.41.0519 Predom. Rc Med589.51.0178 5B SF Bay L/M835.20.7184 TriNum W/L Low1062.20.5649 Predom. Rc M/H547.01.0970 5B SF Bay Med730.00.8220 TriNum W/L Med763.60.7858 Predom. Rc High521.01.1517 5B SF Bay M/H675.20.8886 TriNum W/L Hig680.60.8816 5B W/L Low1189.40.5045 5B SF Bay High652.10.9201 Predom. Upwind710.10.8449 5B W/L L/M874.80.6859 ChiMac Up Low840.90.7135 Predom. Reaching627.90.9556 5B W/L Med751.90.7980 ChiMac Up Med767.60.7816 Predom. Downwind665.50.9016 5B W/L M/H688.30.8717 ChiMac Up High683.20.8782 Predom. Up Low946.90.6337 5B W/L High663.00.9050 ChiMac Off Low834.10.7193 Predom. Up L/M736.70.8144 W/L 60-40 Low1188.70.5048 ChiMac Off Med738.20.8128 Predom. Up Med664.80.9026 W/L 60-40 L/M884.20.6785 ChiMac Off High624.70.9604 Predom. Up M/H631.60.9499 W/L 60-40 Med769.60.7796 ChiMac AP Low833.40.7199 Predom. Up High619.30.9689 W/L 60-40 M/H713.90.8405 ChiMac AP Med750.00.8000 Predom. Dn Low969.00.6192 W/L 60-40 High694.50.8640 ChiMac AP High652.10.9201 Predom. Dn L/M716.70.8372 5B AP Low878.40.6830 BayMac Cove Island957.10.6269 Predom. Dn Med615.20.9753 5B AP L/M699.30.8580 BayMac Shore948.50.6326 Predom. Dn M/H552.91.0851 5B AP Med619.70.9682 Harvest Moon556.11.0790      SA/DSPL Up22.23SA/DSPL Dn34.47
ORC Ref  04310004JNW Issued on 01/04/2026 Valid until 31/03/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Double HandedClub Certificate2026
Humming BirdNED 5804
Watersportverbond
www.watersportverbond.nl
Wedstrijdsport@watersportverbond.nl
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassHB 31Measurement11/05/1998HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall9.255Maximum beam3.070Draft1.751Displacement3,047Wetted area16.51IMS L7.483LSM07.216Accomod. length9.255Sink (kg/mm) 12.10
VCGD0.061VCGM0.059 RM Rated (kg·m) 55.4Limit of positive stability(°) 115.0 Stability Index 111.4 BLR index 0.0000Default crew weight170 Declared crew weight
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.381PBW0.095PIPA0.0038
PSD0.022PHD0.064PHL0.090
PSA20.0°ESL0.590
ST10.019ST20.080ST30.080
ST40.058ST50.194
RIG
BackstayAdjustableForestayFixedInner forestayNot installedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysYesCheckstaysNoSpreaders1Rotating mastNo
P11.000IG10.080ISP10.150MDT10.088MDL10.133MDT2MDL2TLTaperMWGO
E4.100J3.200BAS1.440FSDFoilSFJ0.030SPL3.270WPLTPSBD0.136MWTMCG
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date11/05/1998
SFFP0.652FFM1.026FF1.042LCFcl5.019SG1.0100
SAFP8.158FAM0.840FA0.847LCFsh5.247HBI0.948
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  04310004JNW Issued on 01/04/2026 Valid until 31/03/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Double HandedClub Certificate2026
Humming BirdNED 5804
Watersportverbond
www.watersportverbond.nl
Wedstrijdsport@watersportverbond.nl
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.140.751.372.453.3325.49
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentORC0.080.531.012.043.154.3210.17NoNo 21.40* Copied from legacy *10.080.480.881.642.423.2310.17NoNo 16.73
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentORC10.0010.0010.005.705.5347.22* Copied from legacy *
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
CRUISER/RACER REQUIREMENTS*
Accommodation length9.3 mTable area0.44 m²Headroom1.65 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity66 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity36 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.
ORC Ref  04310004JNW Issued on 01/04/2026 Valid until 31/03/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org