Non Spin/HSFClub Certificate2026
JesssNOR 427
Norges Seilforbund
Sognsveien 73
0854 OSLO
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 Angles45.7°42.9°40.6°38.3°37.5°37.4°37.3°37.8°40.2°
Beat VMG2.303.253.954.404.574.644.684.694.53
52°3.594.935.786.216.376.466.516.576.52
60°3.855.185.976.366.556.656.726.816.79
75°4.035.346.096.496.786.977.097.267.33
90°3.915.236.056.506.867.177.437.838.10
110°3.354.695.696.306.747.177.618.679.42
120°3.074.425.446.136.587.007.458.6610.24
135°2.593.844.875.696.256.667.068.049.51
150°2.163.264.205.035.726.216.577.328.31
Run VMG1.872.823.674.515.265.896.337.077.96
Gybe Angles143.1°145.3°175.7°177.5°178.9°179.5°179.9°180.0°180.0°
APH ToD:633.1CDL: 7.184APH ToT: 0.9477CertNo:7677
BOAT
ClassJ-80 ODDesignerJohnstoneBuilderJ Composite FranceAge date01/2002Series date01/1992Offset fileJ80.OD+.offData file7677
HULL
Length Overall8.032 mMaximum Beam2.488 mDraft1.499 mDisplacement1,453 kgDLR4.5839IMS DivisionSportboatDynamic Allowance0.220%Age Allowance0.650%RS Assessment-0.127%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight350 kg(declared)Minimum weight220 kg ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail20.9621.61Headsail Luffed13.8213.82Headsail FlyingSymmetricAsymmetric
STORM SAIL AREAS Maximum (m²)
Trysail6.10Storm Jib4.57Heavy Weather Jib12.34
SAIL LIMITS
Headsails5
✱ Zero set flying
Spinnakers0
✱ No spinnaker pole aboard
STABILITY
Righting Moment 27.2 kg·m Stability Index 105.4
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  03440004NM6 Issued on 29/04/2026 Valid until 31/03/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Non Spin/HSFClub Certificate2026
JesssNOR 427
Norges Seilforbund
Sognsveien 73
0854 OSLO
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 VMG1567.71108.1912.3818.3788.6776.1769.4767.3794.8
52°1002.1729.7623.1580.1564.9557.7553.0548.1552.5
60°935.1694.6603.5566.4549.4541.1535.3528.8529.8
75°893.3674.6590.9554.5531.2516.6508.0496.1491.1
90°920.5688.3595.3553.9525.0502.0484.4459.6444.6
110°1074.7766.9632.7571.2534.4502.4472.8415.1382.3
120°1171.3815.4662.2587.2547.5514.5483.0415.6351.6
135°1389.2937.0738.5632.2576.0540.9510.0448.0378.4
150°1665.61106.0857.8715.3629.5579.9548.0492.1433.0
Run VMG1923.21277.1980.8798.1683.8611.2568.5508.9452.5
Selected Courses
Windward / Leeward1745.51192.6946.5808.2736.2693.6668.9638.1623.6
All purpose1298.9908.7741.6655.2610.3582.4562.9531.6511.3
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward774.30.7749
All purpose633.10.9477
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low825.20.7271
Triple Number Coastal/Long Distance Medium629.30.9535
Triple Number Coastal/Long Distance High556.01.0791
Triple Number Windward/Leeward Low1069.50.5610
Triple Number Windward/Leeward Medium767.10.7822
Triple Number Windward/Leeward High663.60.9042
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance690.90.8684
Triple Number Coastal/Long Distance Low825.20.7271
Triple Number Coastal/Long Distance Medium629.30.9535
Triple Number Coastal/Long Distance High556.01.0791
Triple Number Windward/Leeward Low1069.50.5610
Triple Number Windward/Leeward Medium767.10.7822
Triple Number Windward/Leeward High663.60.9042
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1763.21201.0893.2734.3650.6604.9569.3504.8477.3
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.7071
Downwind "popa"0.7737
70% up, 30% down "Ilhabela"0.7258
30% up, 70% down "Ilhabela-inverso"0.7524
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low825.20.7271
Triple Number Coastal/Long Distance Medium629.30.9535
Triple Number Coastal/Long Distance High556.01.0791
Triple Number Windward/Leeward Low1069.50.5610
Triple Number Windward/Leeward Medium767.10.7822
Triple Number Windward/Leeward High663.60.9042
Predominantly Upwind672.20.8926
Predominantly Downwind658.50.9112
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP658.20.9115 Predom. Rc High501.91.1955 5B SF Bay L/M857.40.6998 TriNum AP Low825.10.7271 Predom. Dn Low1064.00.5639 5B SF Bay Med729.50.8224 TriNum AP Med629.30.9534 Predom. Dn L/M759.80.7897 5B SF Bay M/H661.00.9077 TriNum AP High556.01.0791 Predom. Dn Med631.60.9500 5B SF Bay High629.90.9525 TriNum W/L Low1123.30.5341 Predom. Dn M/H553.31.0845 5B AP Low933.40.6428 TriNum W/L Med767.10.7822 Predom. Dn High506.41.1849 5B AP L/M716.40.8375 TriNum W/L Hig663.60.9042 ChiMac Up Low846.20.7091 5B AP Med620.00.9677 Predom. Upwind699.80.8573 ChiMac Up Med763.50.7859 5B AP M/H564.91.0622 Predom. Reaching632.30.9490 ChiMac Up High668.30.8979 5B AP High533.51.1247 Predom. Downwind692.50.8664 ChiMac Off Low899.30.6672 5B W/L Low1269.30.4727 Predom. Up Low965.60.6214 ChiMac Off Med781.60.7676 5B W/L L/M903.00.6645 Predom. Up L/M732.40.8192 ChiMac Off High643.00.9331 5B W/L Med752.90.7969 Predom. Up Med650.10.9229 ChiMac AP Low866.30.6926 5B W/L M/H673.50.8908 Predom. Up M/H610.50.9829 ChiMac AP Med767.80.7814 5B W/L High641.00.9361 Predom. Up High593.21.0115 ChiMac AP High652.50.9195 W/L 60-40 Low1250.20.4799 Predom. Rc Low896.80.6691 BayMac Cove Island1005.70.5966 W/L 60-40 L/M900.30.6664 Predom. Rc L/M674.90.8891 BayMac Shore993.50.6039 W/L 60-40 Med762.30.7871 Predom. Rc Med588.31.0198 Harvest Moon556.31.0786 W/L 60-40 M/H693.20.8656 Predom. Rc M/H535.31.1209 5B SF Bay Low1052.30.5702 W/L 60-40 High667.30.8992      SA/DSPL Up27.08SA/DSPL Dn27.08
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance690.90.8684
Triple Number Coastal/Long Distance Low825.20.7271
Triple Number Coastal/Long Distance Medium629.30.9535
Triple Number Coastal/Long Distance High556.01.0791
Triple Number Windward/Leeward Low1069.50.5610
Triple Number Windward/Leeward Medium767.10.7822
Triple Number Windward/Leeward High663.60.9042
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1763.21201.0893.2734.3650.6604.9569.3504.8477.3
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance690.90.8684
Triple Number Coastal/Long Distance Low825.20.7271
Triple Number Coastal/Long Distance Medium629.30.9535
Triple Number Coastal/Long Distance High556.01.0791
Triple Number Windward/Leeward Low1069.50.5610
Triple Number Windward/Leeward Medium767.10.7822
Triple Number Windward/Leeward High663.60.9042
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1763.21201.0893.2734.3650.6604.9569.3504.8477.3
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance690.9
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1763.21201.0893.2734.3650.6604.9569.3504.8477.3
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low825.20.7271
Triple Number Coastal/Long Distance Medium629.30.9535
Triple Number Coastal/Long Distance High556.01.0791
Triple Number Windward/Leeward Low1069.50.5610
Triple Number Windward/Leeward Medium767.10.7822
Triple Number Windward/Leeward High663.60.9042
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating690.90.8684
FinRating, kevyt tuuli1254.60.7970
FinRating, kova tuuli535.40.9340
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low825.20.7271
Triple Number Coastal/Long Distance Medium629.30.9535
Triple Number Coastal/Long Distance High556.01.0791
Triple Number Windward/Leeward Low1069.50.5610
Triple Number Windward/Leeward Medium767.10.7822
Triple Number Windward/Leeward High663.60.9042
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance0.8684
Triple Number Coastal/Long Distance Low0.7271
Triple Number Coastal/Long Distance Medium0.9535
Triple Number Coastal/Long Distance High1.0791
Triple Number Windward/Leeward Low0.5610
Triple Number Windward/Leeward Medium0.7822
Triple Number Windward/Leeward High0.9042
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1763.21201.0893.2734.3650.6604.9569.3504.8477.3
For information
General Purpose Handicap (GPH)713.0
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance690.90.8684
Triple Number Coastal/Long Distance Low825.20.7271
Triple Number Coastal/Long Distance Medium629.30.9535
Triple Number Coastal/Long Distance High556.01.0791
Triple Number Windward/Leeward Low1069.50.5610
Triple Number Windward/Leeward Medium767.10.7822
Triple Number Windward/Leeward High663.60.9042
Saronikos S All Purpose705.60.8503
Saronikos S Upwind772.30.7769
Saronikos S Downwind640.40.9369
Saronikos N All Purpose755.80.7938
Saronikos N Upwind808.90.7418
Saronikos N Downwind717.80.8359
Saronikos SW All Purpose714.90.8392
Saronikos SW Upwind791.30.7582
Saronikos SW Downwind657.10.9131
Saronikos NE All Purpose794.20.7555
Saronikos NE Upwind760.90.7885
Saronikos NE Downwind816.60.7347
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1763.21201.0893.2734.3650.6604.9569.3504.8477.3
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low825.20.7271
Triple Number Coastal/Long Distance Medium629.30.9535
Triple Number Coastal/Long Distance High556.01.0791
Triple Number Windward/Leeward Low1069.50.5610
Triple Number Windward/Leeward Medium767.10.7822
Triple Number Windward/Leeward High663.60.9042
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose658.20.9115
5-Band All Purpose Low1006.70.5960
5-Band All Purpose L/M742.30.8083
5-Band All Purpose Med638.30.9400
5-Band All Purpose M/H579.61.0352
5-Band All Purpose High547.91.0950
Single Number Predominant Upwind669.70.8959
Single Number Predominant Reaching607.20.9882
Single Number Predominant Downwind660.30.9087
5-Band 50-50 Windward/Leeward Low1269.30.4727
5-Band 50-50 Windward/Leeward L/M903.00.6645
5-Band 50-50 Windward/Leeward Med752.90.7969
5-Band 50-50 Windward/Leeward M/H673.50.8908
5-Band 50-50 Windward/Leeward High641.00.9361
5-Band 60-40 Windward/Leeward Low1250.20.4799
5-Band 60-40 Windward/Leeward L/M900.30.6664
5-Band 60-40 Windward/Leeward Med762.30.7871
5-Band 60-40 Windward/Leeward M/H693.20.8656
5-Band 60-40 Windward/Leeward High667.30.8992
Triple Number 50-50 Windward/Leeward Low1123.30.5341
Triple Number 50-50 Windward/Leeward Med767.20.7821
Triple Number 50-50 Windward/Leeward High663.60.9042
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward782.90.7664
Triple Number 60-40 Windward/Leeward Low1110.00.5406
Triple Number 60-40 Windward/Leeward Med774.90.7743
Triple Number 60-40 Windward/Leeward High684.90.8760
Triple Number All-Purpose Low899.80.6668
Triple Number All-Purpose Med648.40.9254
Triple Number All-Purpose High570.71.0514
Triple Number Predominant Upwind Low882.00.6803
Triple Number Predominant Upwind Med660.50.9084
Triple Number Predominant Upwind High610.10.9834
Triple Number Predominant Reaching Low810.60.7402
Triple Number Predominant Reaching Med606.00.9901
Triple Number Predominant Reaching High517.01.1605
Triple Number Predominant Downwind Low938.90.6390
Triple Number Predominant Downwind Med647.20.9271
Triple Number Predominant Downwind High531.81.1282
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance690.90.8684
Triple Number Coastal/Long Distance Low825.20.7271
Triple Number Coastal/Long Distance Medium629.30.9535
Triple Number Coastal/Long Distance High556.01.0791
Triple Number Windward/Leeward Low1069.50.5610
Triple Number Windward/Leeward Medium767.10.7822
Triple Number Windward/Leeward High663.60.9042
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1763.21201.0893.2734.3650.6604.9569.3504.8477.3
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance690.90.8684
Triple Number Coastal/Long Distance Low825.20.7271
Triple Number Coastal/Long Distance Medium629.30.9535
Triple Number Coastal/Long Distance High556.01.0791
Triple Number Windward/Leeward Low1069.50.5610
Triple Number Windward/Leeward Medium767.10.7822
Triple Number Windward/Leeward High663.60.9042
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1763.21201.0893.2734.3650.6604.9569.3504.8477.3
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low825.2
Triple Number Coastal/Long Distance Medium629.3
Triple Number Coastal/Long Distance High556.0
Triple Number Windward/Leeward Low1069.5
Triple Number Windward/Leeward Medium767.1
Triple Number Windward/Leeward High663.6
Predominantly Upwind672.2
Predominantly Downwind658.5
Predominantly Reaching622.6
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance690.90.8684
Triple Number Coastal/Long Distance Low825.20.7271
Triple Number Coastal/Long Distance Medium629.30.9535
Triple Number Coastal/Long Distance High556.01.0791
Triple Number Windward/Leeward Low1069.50.5610
Triple Number Windward/Leeward Medium767.10.7822
Triple Number Windward/Leeward High663.60.9042
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1763.21201.0893.2734.3650.6604.9569.3504.8477.3
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7271
Triple Number Coastal/Long Distance Medium0.9535
Triple Number Coastal/Long Distance High1.0791
Triple Number Windward/Leeward Low0.5610
Triple Number Windward/Leeward Medium0.7822
Triple Number Windward/Leeward High0.9042
Coastal/Long Distance0.8684
Predominantly Upwind0.8926
Predominantly Downwind0.9112
For information
General Purpose Handicap (GPH)713.0
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)0.9477
Distanseseilas Trippeltall svak vind0.7271
Distanseseilas Trippeltall mellomvind0.9535
Distanseseilas Trippeltall sterk vind1.0791
Pølsebane Trippeltall svak vind0.5610
Pølsebane Trippeltall mellomvind0.7822
Pølsebane Trippeltall sterk vind0.9042
Motvind Singeltall0.8926
Medvind Singeltall0.9112
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low825.20.7271
Triple Number Coastal/Long Distance Medium629.30.9535
Triple Number Coastal/Long Distance High556.01.0791
Triple Number Windward/Leeward Low1069.50.5610
Triple Number Windward/Leeward Medium767.10.7822
Triple Number Windward/Leeward High663.60.9042
Coastal/Long Distance690.90.8684
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind672.20.8926
Predominantly Downwind658.50.9112
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore628.00.9554
Cape Doctor Coastal517.41.1597
Triple Number Coastal/Long Distance Low825.20.7271
Triple Number Coastal/Long Distance Medium629.30.9535
Triple Number Coastal/Long Distance High556.01.0791
Triple Number Windward/Leeward Low1069.50.5610
Triple Number Windward/Leeward Medium767.10.7822
Triple Number Windward/Leeward High663.60.9042
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7271
Triple Number Coastal/Long Distance Medium0.9535
Triple Number Coastal/Long Distance High1.0791
Triple Number Windward/Leeward Low0.5610
Triple Number Windward/Leeward Medium0.7822
Triple Number Windward/Leeward High0.9042
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7271
Triple Number Coastal/Long Distance Medium0.9535
Triple Number Coastal/Long Distance High1.0791
Triple Number Windward/Leeward Low0.5610
Triple Number Windward/Leeward Medium0.7822
Triple Number Windward/Leeward High0.9042
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance690.90.8684
Triple Number Coastal/Long Distance Low825.20.7271
Triple Number Coastal/Long Distance Medium629.30.9535
Triple Number Coastal/Long Distance High556.01.0791
Triple Number Windward/Leeward Low1069.50.5610
Triple Number Windward/Leeward Medium767.10.7822
Triple Number Windward/Leeward High663.60.9042
Predominantly Upwind672.20.8926
Predominantly Downwind658.50.9112
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1763.21201.0893.2734.3650.6604.9569.3504.8477.3
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance690.90.8684
Triple Number Coastal/Long Distance Low825.20.7271
Triple Number Coastal/Long Distance Medium629.30.9535
Triple Number Coastal/Long Distance High556.01.0791
Triple Number Windward/Leeward Low1069.50.5610
Triple Number Windward/Leeward Medium767.10.7822
Triple Number Windward/Leeward High663.60.9042
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1763.21201.0893.2734.3650.6604.9569.3504.8477.3
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP658.20.9115 Predom. Dn High506.41.1849 5B AP M/H564.91.0622 TriNum AP Low825.10.7271 Predom. Rc Low896.80.6691 5B AP High533.51.1247 TriNum AP Med629.30.9534 Predom. Rc L/M674.90.8891 5B SF Bay Low1052.30.5702 TriNum AP High556.01.0791 Predom. Rc Med588.31.0198 5B SF Bay L/M857.40.6998 TriNum W/L Low1123.30.5341 Predom. Rc M/H535.31.1209 5B SF Bay Med729.50.8224 TriNum W/L Med767.10.7822 Predom. Rc High501.91.1955 5B SF Bay M/H661.00.9077 TriNum W/L Hig663.60.9042 5B W/L Low1269.30.4727 5B SF Bay High629.90.9525 Predom. Upwind699.80.8573 5B W/L L/M903.00.6645 ChiMac Up Low846.20.7091 Predom. Reaching632.30.9490 5B W/L Med752.90.7969 ChiMac Up Med763.50.7859 Predom. Downwind692.50.8664 5B W/L M/H673.50.8908 ChiMac Up High668.30.8979 Predom. Up Low965.60.6214 5B W/L High641.00.9361 ChiMac Off Low899.30.6672 Predom. Up L/M732.40.8192 W/L 60-40 Low1250.20.4799 ChiMac Off Med781.60.7676 Predom. Up Med650.10.9229 W/L 60-40 L/M900.30.6664 ChiMac Off High643.00.9331 Predom. Up M/H610.50.9829 W/L 60-40 Med762.30.7871 ChiMac AP Low866.30.6926 Predom. Up High593.21.0115 W/L 60-40 M/H693.20.8656 ChiMac AP Med767.80.7814 Predom. Dn Low1064.00.5639 W/L 60-40 High667.30.8992 ChiMac AP High652.50.9195 Predom. Dn L/M759.80.7897 5B AP Low933.40.6428 BayMac Cove Island1005.70.5966 Predom. Dn Med631.60.9500 5B AP L/M716.40.8375 BayMac Shore993.50.6039 Predom. Dn M/H553.31.0845 5B AP Med620.00.9677 Harvest Moon556.31.0786      SA/DSPL Up27.08SA/DSPL Dn27.08
ORC Ref  03440004NM6 Issued on 29/04/2026 Valid until 31/03/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Non Spin/HSFClub Certificate2026
JesssNOR 427
Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ-80 ODMeasurementHINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall8.032Maximum beam2.488Draft1.499Displacement1,453Wetted area11.83IMS L7.196LSM06.817Accomod. length8.032Sink (kg/mm) 9.02
VCGD-0.150VCGM-0.079 RM Rated (kg·m) 27.2Limit of positive stability(°) 112.0 Stability Index 105.4 BLR index 0.0000Default crew weight399 Declared crew weight 350
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeNo Propeller
Hydro generatorNo
RIG
BackstayAdjustableForestayFixedInner forestayNot installedMast materialAluminumSingle headsail furlerNoMainsail furlerArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysNoCheckstaysNoSpreaders2Rotating mastNo
P9.140IG9.560ISP10.060MDT10.080MDL10.130MDT20.060MDL20.100TL0.380MW0.120GO0.120
E3.810J2.900BAS1.300FSD0.025SFJ0.000SPL0.000WPLTPS4.810BD0.000MWT33.10MCG3.210
PY0.000MDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.150Flotation Date01/01/2015
SFFP0.177FFM0.870FF0.870LCFcl4.246SG
SAFP8.015FAM0.630FA0.630LCFsh4.422HBI0.736
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03440004NM6 Issued on 29/04/2026 Valid until 31/03/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org
Non Spin/HSFClub Certificate2026
JesssNOR 427
Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment7677-2004012412000.160.001.442.483.1920.9601/01/17537677-2004012412000.160.001.442.483.1920.9601/01/1753
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment394-2023041214530.070.410.771.462.222.959.29YesNo 13.8212/04/2023394-2023041214530.070.410.771.462.222.959.29YesNo 13.8212/04/2023
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
CRUISER/RACER REQUIREMENTS*
Accommodation length8.0 mTable area0.33 m²Headroom1.40 mMinimum number of berths3Personal gear stowage0.12 m³Fresh water capacity30 lMinimum number of seats in cockpit3Food stowage0.18 m³Fuel capacity20 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.
ORC Ref  03440004NM6 Issued on 29/04/2026 Valid until 31/03/2027
VPP ver: 2026 1.00 | © ORC | www.orc.org