Club Certificate2026
MarinettaFIN-6053
Avomeripurjehtijat ry
c/o Helsingfors Segelklubb ry
Vattuniemen puistotie 1
00210 HELSINKI
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°43.6°41.3°40.4°40.1°39.8°39.8°40.3°42.3°
Beat VMG2.243.163.784.174.364.444.484.484.33
52°3.554.825.616.076.286.376.426.476.42
60°3.845.085.856.256.456.556.616.676.65
75°4.055.286.026.416.636.776.876.997.02
90°3.965.316.146.536.716.897.067.337.49
110°3.935.356.226.656.947.197.407.707.79
120°3.785.176.106.596.927.227.548.058.31
135°3.284.655.676.346.737.067.418.168.82
150°2.713.965.005.856.426.787.097.828.56
Run VMG2.353.434.345.125.786.286.657.267.95
Gybe Angles139.5°146.2°151.9°155.6°164.2°172.7°178.3°178.1°177.4°
APH ToD:620.3CDL: 7.273APH ToT: 0.9672CertNo:
BOAT
ClassCROWN 31DesignerHKAN SODERGRENBuilderCROWN MARINAge date07/1987Series date07/1987Offset fileINFERNO-31.offData fileL-6053
HULL
Length Overall9.447 mMaximum Beam3.018 mDraft1.615 mDisplacement4,057 kgDLR8.2705IMS DivisionCruiser/RacerDynamic Allowance0.260%Age Allowance0.650%RS Assessment0.000%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.377m
CREW
Maximum weight350 kg(declared)Minimum weight220 kg ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail32.2432.94Headsail Luffed19.7919.79Headsail FlyingSymmetric62.0862.08Asymmetric
STORM SAIL AREAS Maximum (m²)
Trysail9.30Storm Jib7.11Heavy Weather Jib19.18
SAIL LIMITS
Headsails5
✱ One set on the forestay
Spinnakers4
STABILITY
Righting Moment 71.7 kg·m Stability Index 123.5
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  04140004MK9 Issued on 22/04/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
MarinettaFIN-6053
Avomeripurjehtijat ry
c/o Helsingfors Segelklubb ry
Vattuniemen puistotie 1
00210 HELSINKI
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 VMG1604.11139.6952.9864.1825.5810.4803.1802.8830.6
52°1014.7747.1641.2593.2573.5565.3560.6556.8560.6
60°938.6708.4615.7575.7558.0549.3544.6540.0541.0
75°889.0682.2597.7561.8543.0531.5523.8515.4512.6
90°909.7678.3586.5551.6536.8522.7510.2491.4480.5
110°914.9673.0578.5541.4519.0500.7486.8467.6462.3
120°953.2696.4590.1546.1520.4498.4477.4447.3433.0
135°1098.5774.1635.5568.0534.7509.9485.9441.2408.3
150°1327.3910.2719.8615.0561.0531.3507.6460.4420.7
Run VMG1532.61051.0830.0703.8622.7572.9541.0495.9452.8
Selected Courses
Windward / Leeward1568.31095.3891.4783.9724.1691.6672.0649.3641.7
All purpose1179.0844.0703.9636.0601.2581.0566.7546.6539.0
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward755.90.7937
All purpose620.30.9672
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low774.00.7752
Triple Number Coastal/Long Distance Medium616.30.9735
Triple Number Coastal/Long Distance High562.71.0662
Triple Number Windward/Leeward Low993.40.6040
Triple Number Windward/Leeward Medium749.90.8001
Triple Number Windward/Leeward High668.40.8976
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance673.00.8916
Triple Number Coastal/Long Distance Low774.00.7752
Triple Number Coastal/Long Distance Medium616.30.9735
Triple Number Coastal/Long Distance High562.71.0662
Triple Number Windward/Leeward Low993.40.6040
Triple Number Windward/Leeward Medium749.90.8001
Triple Number Windward/Leeward High668.40.8976
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1564.81090.9838.7711.0640.6602.6571.8521.0510.0
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.6776
Downwind "popa"0.8719
70% up, 30% down "Ilhabela"0.7261
30% up, 70% down "Ilhabela-inverso"0.8028
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low774.00.7752
Triple Number Coastal/Long Distance Medium616.30.9735
Triple Number Coastal/Long Distance High562.71.0662
Triple Number Windward/Leeward Low993.40.6040
Triple Number Windward/Leeward Medium749.90.8001
Triple Number Windward/Leeward High668.40.8976
Predominantly Upwind675.20.8886
Predominantly Downwind619.10.9691
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP644.80.9306 Predom. Rc High516.11.1625 5B SF Bay L/M822.20.7298 TriNum AP Low774.00.7752 Predom. Dn Low926.50.6476 5B SF Bay Med718.10.8355 TriNum AP Med616.40.9735 Predom. Dn L/M692.60.8663 5B SF Bay M/H664.10.9034 TriNum AP High562.71.0662 Predom. Dn Med599.61.0006 5B SF Bay High642.20.9342 TriNum W/L Low1040.10.5769 Predom. Dn M/H543.01.1049 5B AP Low851.30.7048 TriNum W/L Med749.90.8001 Predom. Dn High509.41.1778 5B AP L/M685.40.8753 TriNum W/L Hig668.40.8976 ChiMac Up Low834.80.7188 5B AP Med609.20.9848 Predom. Upwind702.40.8542 ChiMac Up Med760.70.7887 5B AP M/H568.61.0552 Predom. Reaching615.30.9752 ChiMac Up High675.40.8884 5B AP High548.81.0934 Predom. Downwind646.40.9282 ChiMac Off Low801.80.7483 5B W/L Low1162.60.5161 Predom. Up Low941.20.6375 ChiMac Off Med713.30.8411 5B W/L L/M858.80.6986 Predom. Up L/M729.80.8222 ChiMac Off High608.80.9856 5B W/L Med738.20.8128 Predom. Up Med656.70.9137 ChiMac AP Low814.40.7367 5B W/L M/H675.90.8877 Predom. Up M/H622.90.9633 ChiMac AP Med734.30.8171 5B W/L High651.90.9203 Predom. Up High610.60.9827 ChiMac AP High640.40.9369 W/L 60-40 Low1171.90.5120 Predom. Rc Low828.60.7242 BayMac Cove Island934.30.6422 W/L 60-40 L/M873.10.6872 Predom. Rc L/M644.20.9314 BayMac Shore927.00.6473 W/L 60-40 Med758.20.7914 Predom. Rc Med578.51.0371 Harvest Moon547.51.0960 W/L 60-40 M/H701.90.8548 Predom. Rc M/H539.81.1114 5B SF Bay Low984.10.6097 W/L 60-40 High683.10.8784      SA/DSPL Up20.36SA/DSPL Dn36.91
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance673.00.8916
Triple Number Coastal/Long Distance Low774.00.7752
Triple Number Coastal/Long Distance Medium616.30.9735
Triple Number Coastal/Long Distance High562.71.0662
Triple Number Windward/Leeward Low993.40.6040
Triple Number Windward/Leeward Medium749.90.8001
Triple Number Windward/Leeward High668.40.8976
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1564.81090.9838.7711.0640.6602.6571.8521.0510.0
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance673.00.8916
Triple Number Coastal/Long Distance Low774.00.7752
Triple Number Coastal/Long Distance Medium616.30.9735
Triple Number Coastal/Long Distance High562.71.0662
Triple Number Windward/Leeward Low993.40.6040
Triple Number Windward/Leeward Medium749.90.8001
Triple Number Windward/Leeward High668.40.8976
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1564.81090.9838.7711.0640.6602.6571.8521.0510.0
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance673.0
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1564.81090.9838.7711.0640.6602.6571.8521.0510.0
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low774.00.7752
Triple Number Coastal/Long Distance Medium616.30.9735
Triple Number Coastal/Long Distance High562.71.0662
Triple Number Windward/Leeward Low993.40.6040
Triple Number Windward/Leeward Medium749.90.8001
Triple Number Windward/Leeward High668.40.8976
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating673.00.8916
FinRating, kevyt tuuli1142.30.8754
FinRating, kova tuuli552.40.9052
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low774.00.7752
Triple Number Coastal/Long Distance Medium616.30.9735
Triple Number Coastal/Long Distance High562.71.0662
Triple Number Windward/Leeward Low993.40.6040
Triple Number Windward/Leeward Medium749.90.8001
Triple Number Windward/Leeward High668.40.8976
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance0.8916
Triple Number Coastal/Long Distance Low0.7752
Triple Number Coastal/Long Distance Medium0.9735
Triple Number Coastal/Long Distance High1.0662
Triple Number Windward/Leeward Low0.6040
Triple Number Windward/Leeward Medium0.8001
Triple Number Windward/Leeward High0.8976
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1564.81090.9838.7711.0640.6602.6571.8521.0510.0
For information
General Purpose Handicap (GPH)691.0
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance673.00.8916
Triple Number Coastal/Long Distance Low774.00.7752
Triple Number Coastal/Long Distance Medium616.30.9735
Triple Number Coastal/Long Distance High562.71.0662
Triple Number Windward/Leeward Low993.40.6040
Triple Number Windward/Leeward Medium749.90.8001
Triple Number Windward/Leeward High668.40.8976
Saronikos S All Purpose704.10.8521
Saronikos S Upwind796.70.7531
Saronikos S Downwind585.91.0241
Saronikos N All Purpose739.00.8119
Saronikos N Upwind830.10.7228
Saronikos N Downwind636.50.9427
Saronikos SW All Purpose707.30.8483
Saronikos SW Upwind811.80.7391
Saronikos SW Downwind596.81.0054
Saronikos NE All Purpose758.40.7912
Saronikos NE Upwind775.70.7735
Saronikos NE Downwind709.50.8457
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1564.81090.9838.7711.0640.6602.6571.8521.0510.0
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low774.00.7752
Triple Number Coastal/Long Distance Medium616.30.9735
Triple Number Coastal/Long Distance High562.71.0662
Triple Number Windward/Leeward Low993.40.6040
Triple Number Windward/Leeward Medium749.90.8001
Triple Number Windward/Leeward High668.40.8976
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose644.80.9306
5-Band All Purpose Low929.30.6456
5-Band All Purpose L/M709.00.8462
5-Band All Purpose Med627.10.9568
5-Band All Purpose M/H582.31.0304
5-Band All Purpose High559.61.0722
Single Number Predominant Upwind673.90.8903
Single Number Predominant Reaching592.81.0122
Single Number Predominant Downwind619.90.9678
5-Band 50-50 Windward/Leeward Low1162.60.5161
5-Band 50-50 Windward/Leeward L/M858.80.6986
5-Band 50-50 Windward/Leeward Med738.20.8128
5-Band 50-50 Windward/Leeward M/H675.90.8877
5-Band 50-50 Windward/Leeward High651.90.9203
5-Band 60-40 Windward/Leeward Low1171.90.5120
5-Band 60-40 Windward/Leeward L/M873.10.6872
5-Band 60-40 Windward/Leeward Med758.20.7914
5-Band 60-40 Windward/Leeward M/H701.90.8548
5-Band 60-40 Windward/Leeward High683.10.8784
Triple Number 50-50 Windward/Leeward Low1040.10.5769
Triple Number 50-50 Windward/Leeward Med750.00.8000
Triple Number 50-50 Windward/Leeward High668.40.8976
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward775.80.7734
Triple Number 60-40 Windward/Leeward Low1050.70.5710
Triple Number 60-40 Windward/Leeward Med769.00.7802
Triple Number 60-40 Windward/Leeward High695.70.8624
Triple Number All-Purpose Low839.10.7150
Triple Number All-Purpose Med634.80.9452
Triple Number All-Purpose High575.71.0422
Triple Number Predominant Upwind Low860.70.6971
Triple Number Predominant Upwind Med665.70.9014
Triple Number Predominant Upwind High626.40.9579
Triple Number Predominant Reaching Low757.50.7920
Triple Number Predominant Reaching Med594.21.0098
Triple Number Predominant Reaching High524.01.1451
Triple Number Predominant Downwind Low831.20.7218
Triple Number Predominant Downwind Med607.90.9870
Triple Number Predominant Downwind High521.51.1505
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance673.00.8916
Triple Number Coastal/Long Distance Low774.00.7752
Triple Number Coastal/Long Distance Medium616.30.9735
Triple Number Coastal/Long Distance High562.71.0662
Triple Number Windward/Leeward Low993.40.6040
Triple Number Windward/Leeward Medium749.90.8001
Triple Number Windward/Leeward High668.40.8976
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1564.81090.9838.7711.0640.6602.6571.8521.0510.0
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance673.00.8916
Triple Number Coastal/Long Distance Low774.00.7752
Triple Number Coastal/Long Distance Medium616.30.9735
Triple Number Coastal/Long Distance High562.71.0662
Triple Number Windward/Leeward Low993.40.6040
Triple Number Windward/Leeward Medium749.90.8001
Triple Number Windward/Leeward High668.40.8976
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1564.81090.9838.7711.0640.6602.6571.8521.0510.0
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low774.0
Triple Number Coastal/Long Distance Medium616.3
Triple Number Coastal/Long Distance High562.7
Triple Number Windward/Leeward Low993.4
Triple Number Windward/Leeward Medium749.9
Triple Number Windward/Leeward High668.4
Predominantly Upwind675.2
Predominantly Downwind619.1
Predominantly Reaching599.3
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance673.00.8916
Triple Number Coastal/Long Distance Low774.00.7752
Triple Number Coastal/Long Distance Medium616.30.9735
Triple Number Coastal/Long Distance High562.71.0662
Triple Number Windward/Leeward Low993.40.6040
Triple Number Windward/Leeward Medium749.90.8001
Triple Number Windward/Leeward High668.40.8976
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1564.81090.9838.7711.0640.6602.6571.8521.0510.0
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7752
Triple Number Coastal/Long Distance Medium0.9735
Triple Number Coastal/Long Distance High1.0662
Triple Number Windward/Leeward Low0.6040
Triple Number Windward/Leeward Medium0.8001
Triple Number Windward/Leeward High0.8976
Coastal/Long Distance0.8916
Predominantly Upwind0.8886
Predominantly Downwind0.9691
For information
General Purpose Handicap (GPH)691.0
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)0.9672
Distanseseilas Trippeltall svak vind0.7752
Distanseseilas Trippeltall mellomvind0.9735
Distanseseilas Trippeltall sterk vind1.0662
Pølsebane Trippeltall svak vind0.6040
Pølsebane Trippeltall mellomvind0.8001
Pølsebane Trippeltall sterk vind0.8976
Motvind Singeltall0.8886
Medvind Singeltall0.9691
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low774.00.7752
Triple Number Coastal/Long Distance Medium616.30.9735
Triple Number Coastal/Long Distance High562.71.0662
Triple Number Windward/Leeward Low993.40.6040
Triple Number Windward/Leeward Medium749.90.8001
Triple Number Windward/Leeward High668.40.8976
Coastal/Long Distance673.00.8916
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind675.20.8886
Predominantly Downwind619.10.9691
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore644.00.9317
Cape Doctor Coastal541.31.1085
Triple Number Coastal/Long Distance Low774.00.7752
Triple Number Coastal/Long Distance Medium616.30.9735
Triple Number Coastal/Long Distance High562.71.0662
Triple Number Windward/Leeward Low993.40.6040
Triple Number Windward/Leeward Medium749.90.8001
Triple Number Windward/Leeward High668.40.8976
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7752
Triple Number Coastal/Long Distance Medium0.9735
Triple Number Coastal/Long Distance High1.0662
Triple Number Windward/Leeward Low0.6040
Triple Number Windward/Leeward Medium0.8001
Triple Number Windward/Leeward High0.8976
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7752
Triple Number Coastal/Long Distance Medium0.9735
Triple Number Coastal/Long Distance High1.0662
Triple Number Windward/Leeward Low0.6040
Triple Number Windward/Leeward Medium0.8001
Triple Number Windward/Leeward High0.8976
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance673.00.8916
Triple Number Coastal/Long Distance Low774.00.7752
Triple Number Coastal/Long Distance Medium616.30.9735
Triple Number Coastal/Long Distance High562.71.0662
Triple Number Windward/Leeward Low993.40.6040
Triple Number Windward/Leeward Medium749.90.8001
Triple Number Windward/Leeward High668.40.8976
Predominantly Upwind675.20.8886
Predominantly Downwind619.10.9691
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1564.81090.9838.7711.0640.6602.6571.8521.0510.0
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance673.00.8916
Triple Number Coastal/Long Distance Low774.00.7752
Triple Number Coastal/Long Distance Medium616.30.9735
Triple Number Coastal/Long Distance High562.71.0662
Triple Number Windward/Leeward Low993.40.6040
Triple Number Windward/Leeward Medium749.90.8001
Triple Number Windward/Leeward High668.40.8976
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1564.81090.9838.7711.0640.6602.6571.8521.0510.0
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP644.80.9306 Predom. Dn High509.41.1778 5B AP M/H568.61.0552 TriNum AP Low774.00.7752 Predom. Rc Low828.60.7242 5B AP High548.81.0934 TriNum AP Med616.40.9735 Predom. Rc L/M644.20.9314 5B SF Bay Low984.10.6097 TriNum AP High562.71.0662 Predom. Rc Med578.51.0371 5B SF Bay L/M822.20.7298 TriNum W/L Low1040.10.5769 Predom. Rc M/H539.81.1114 5B SF Bay Med718.10.8355 TriNum W/L Med749.90.8001 Predom. Rc High516.11.1625 5B SF Bay M/H664.10.9034 TriNum W/L Hig668.40.8976 5B W/L Low1162.60.5161 5B SF Bay High642.20.9342 Predom. Upwind702.40.8542 5B W/L L/M858.80.6986 ChiMac Up Low834.80.7188 Predom. Reaching615.30.9752 5B W/L Med738.20.8128 ChiMac Up Med760.70.7887 Predom. Downwind646.40.9282 5B W/L M/H675.90.8877 ChiMac Up High675.40.8884 Predom. Up Low941.20.6375 5B W/L High651.90.9203 ChiMac Off Low801.80.7483 Predom. Up L/M729.80.8222 W/L 60-40 Low1171.90.5120 ChiMac Off Med713.30.8411 Predom. Up Med656.70.9137 W/L 60-40 L/M873.10.6872 ChiMac Off High608.80.9856 Predom. Up M/H622.90.9633 W/L 60-40 Med758.20.7914 ChiMac AP Low814.40.7367 Predom. Up High610.60.9827 W/L 60-40 M/H701.90.8548 ChiMac AP Med734.30.8171 Predom. Dn Low926.50.6476 W/L 60-40 High683.10.8784 ChiMac AP High640.40.9369 Predom. Dn L/M692.60.8663 5B AP Low851.30.7048 BayMac Cove Island934.30.6422 Predom. Dn Med599.61.0006 5B AP L/M685.40.8753 BayMac Shore927.00.6473 Predom. Dn M/H543.01.1049 5B AP Med609.20.9848 Harvest Moon547.51.0960      SA/DSPL Up20.36SA/DSPL Dn36.91
ORC Ref  04140004MK9 Issued on 22/04/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
MarinettaFIN-6053
Avomeripurjehtijat ry
c/o Helsingfors Segelklubb ry
Vattuniemen puistotie 1
00210 HELSINKI
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassCROWN 31Measurement06/05/1997HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall9.447Maximum beam3.018Draft1.615Displacement4,057Wetted area18.92IMS L8.002LSM07.886Accomod. length9.447Sink (kg/mm) 14.06
VCGD-0.059VCGM-0.018 RM Rated (kg·m) 71.7Limit of positive stability(°) 121.9 Stability Index 123.5 BLR index 0.0000Default crew weight491 Declared crew weight 350
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.377PBW0.095PIPA0.0032
EDL0.800ST10.045ST20.170
ST30.170ST40.098ST50.338
RIG
BackstayFixedForestayFixedInner forestayNot installedMast materialAluminumSingle headsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysNoCheckstaysNoSpreaders1Rotating mastNo
P12.492IG11.842ISP11.894MDT10.115MDL10.170MDT20.112MDL20.131TL1.560MW0.170GO0.193
E4.250J3.560BAS1.599FSD0.044SFJ0.185SPL3.563WPLTPSBD0.125MWT97.50MCG4.622
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered73.1Flotation Date22/05/1994
SFFP0.593FFM1.204FF1.220LCFcl5.443SG1.0030
SAFP8.565FAM0.967FA0.979LCFsh5.650HBI1.065
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  04140004MK9 Issued on 22/04/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
MarinettaFIN-6053
Avomeripurjehtijat ry
c/o Helsingfors Segelklubb ry
Vattuniemen puistotie 1
00210 HELSINKI
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.150.911.692.823.6232.24* Copied from legacy *
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentG260.090.480.931.732.573.4011.40YesNo 19.7912/04/2026
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment211.7511.7511.756.356.3062.08
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
CRUISER/RACER REQUIREMENTS*
Accommodation length9.4 mTable area0.44 m²Headroom1.66 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity68 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity38 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.
ORC Ref  04140004MK9 Issued on 22/04/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org