Club Certificate2026
OSSO DI SEPPIAITA-18185
FEDERAZIONE ITALIANA VELA
Distr.:UVAI  www.uvai.it
Tel. + 39068841273
E-mail  segreteria@uvai.it
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 Angles44.9°41.9°40.4°38.5°37.1°36.2°36.2°37.4°38.5°
Beat VMG2.233.063.634.004.274.434.464.454.42
52°3.454.595.275.625.896.136.256.336.38
60°3.684.805.425.776.046.326.506.646.70
75°3.935.075.656.056.396.606.837.167.36
90°4.045.195.816.246.647.057.317.778.40
110°3.975.305.976.557.097.497.869.2010.05
120°3.895.225.926.497.127.838.559.6411.53
135°3.554.835.636.226.767.428.3011.2313.52
150°2.994.195.135.726.266.747.319.6413.67
Run VMG2.593.634.455.055.596.056.488.3511.84
Gybe Angles142.6°147.1°151.0°159.5°170.8°174.8°174.4°138.7°145.1°
APH ToD:628.5CDL: 6.009APH ToT: 0.9547CertNo:26/1
BOAT
ClassTwister 650DesignerCossuttiBuilderMedyachtingAge date12/2014Series date05/2007Offset file650POGO2.OFFData fileI18185
HULL
Length Overall6.090Maximum Beam3.000Draft1.600Displacement1,000DLR6.4475IMS DivisionSportboatDynamic Allowance0.000%Age Allowance0.618%RS Assessment-0.203%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight300(declared)Minimum weight170 ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail21.7422.71Headsail Luffed11.3011.30Headsail Flying28.2528.25SymmetricAsymmetric67.8967.89 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS Maximum (m²)
Trysail5.43Storm Jib4.12Heavy Weather Jib11.12
SAIL LIMITS
Headsails5
✱ Woven polyester sails
Spinnakers4
STABILITY
Righting Moment 51.0 Stability Index 108.2
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  03190004F7H Issued on 27/02/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
OSSO DI SEPPIAITA-18185
FEDERAZIONE ITALIANA VELA
Distr.:UVAI  www.uvai.it
Tel. + 39068841273
E-mail  segreteria@uvai.it
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 VMG1616.81174.9992.1900.2843.6813.4807.1808.3814.1
52°1042.3784.0683.3640.2610.9586.9575.9568.6564.7
60°978.4749.9664.8624.2596.4569.7553.8542.5537.1
75°917.0709.7637.2595.5563.1545.6527.2502.6489.3
90°891.1693.3619.9577.0541.9510.7492.7463.1428.5
110°906.3679.6602.8549.3507.5480.8457.8391.4358.1
120°924.7689.8608.1554.7505.6459.9421.0373.5312.1
135°1015.2744.9639.5579.1532.7485.1433.8320.5266.3
150°1205.5859.0702.0629.1575.1534.0492.5373.4263.4
Run VMG1392.0991.9809.9712.6644.0595.1555.5431.1304.1
Selected Courses
Windward / Leeward1504.41083.4901.0806.4743.8704.3681.3619.7559.1
All purpose1149.1846.7724.7659.8614.0581.5557.9508.0467.8
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward768.70.7806
All purpose628.50.9547
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low785.80.7636
Triple Number Coastal/Long Distance Medium630.40.9518
Triple Number Coastal/Long Distance High545.11.1008
Triple Number Windward/Leeward Low992.20.6047
Triple Number Windward/Leeward Medium767.90.7814
Triple Number Windward/Leeward High663.90.9037
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance680.30.8820
Triple Number Coastal/Long Distance Low785.80.7636
Triple Number Coastal/Long Distance Medium630.40.9518
Triple Number Coastal/Long Distance High545.11.1008
Triple Number Windward/Leeward Low992.20.6047
Triple Number Windward/Leeward Medium767.90.7814
Triple Number Windward/Leeward High663.90.9037
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1493.21074.2850.6735.1655.4601.8559.7482.9436.2
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.6625
Downwind "popa"0.8861
70% up, 30% down "Ilhabela"0.7167
30% up, 70% down "Ilhabela-inverso"0.8046
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low785.80.7636
Triple Number Coastal/Long Distance Medium630.40.9518
Triple Number Coastal/Long Distance High545.11.1008
Triple Number Windward/Leeward Low992.20.6047
Triple Number Windward/Leeward Medium767.90.7814
Triple Number Windward/Leeward High663.90.9037
Predominantly Upwind694.30.8642
Predominantly Downwind624.10.9615
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP645.00.9302 Predom. Rc High469.91.2769 5B SF Bay L/M837.60.7164 TriNum AP Low785.70.7636 Predom. Dn Low900.50.6663 5B SF Bay Med732.10.8196 TriNum AP Med630.50.9517 Predom. Dn L/M700.80.8562 5B SF Bay M/H659.60.9096 TriNum AP High545.11.1008 Predom. Dn Med608.40.9862 5B SF Bay High604.90.9919 TriNum W/L Low1034.00.5803 Predom. Dn M/H525.11.1426 5B AP Low850.10.7058 TriNum W/L Med767.90.7814 Predom. Dn High446.91.3425 5B AP L/M703.50.8529 TriNum W/L Hig663.90.9037 ChiMac Up Low854.50.7021 5B AP Med620.80.9665 Predom. Upwind715.00.8391 ChiMac Up Med778.60.7706 5B AP M/H558.11.0751 Predom. Reaching614.10.9771 ChiMac Up High687.10.8733 5B AP High509.71.1773 Predom. Downwind638.10.9402 ChiMac Off Low793.00.7566 5B W/L Low1143.10.5249 Predom. Up Low955.50.6279 ChiMac Off Med708.70.8466 5B W/L L/M871.30.6886 Predom. Up L/M758.10.7915 ChiMac Off High599.31.0012 5B W/L Med755.50.7941 Predom. Up Med676.00.8875 ChiMac AP Low820.10.7316 5B W/L M/H679.90.8825 Predom. Up M/H622.20.9643 ChiMac AP Med741.00.8097 5B W/L High619.90.9680 Predom. Up High592.61.0125 ChiMac AP High641.60.9352 W/L 60-40 Low1162.40.5162 Predom. Rc Low826.50.7260 BayMac Cove Island926.70.6475 W/L 60-40 L/M890.00.6742 Predom. Rc L/M663.00.9050 BayMac Shore920.90.6515 W/L 60-40 Med775.90.7733 Predom. Rc Med587.91.0207 Harvest Moon535.41.1207 W/L 60-40 M/H706.20.8497 Predom. Rc M/H522.01.1495 5B SF Bay Low986.10.6084 W/L 60-40 High657.70.9123      SA/DSPL Up33.04SA/DSPL Dn89.62
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance680.30.8820
Triple Number Coastal/Long Distance Low785.80.7636
Triple Number Coastal/Long Distance Medium630.40.9518
Triple Number Coastal/Long Distance High545.11.1008
Triple Number Windward/Leeward Low992.20.6047
Triple Number Windward/Leeward Medium767.90.7814
Triple Number Windward/Leeward High663.90.9037
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1493.21074.2850.6735.1655.4601.8559.7482.9436.2
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance680.30.8820
Triple Number Coastal/Long Distance Low785.80.7636
Triple Number Coastal/Long Distance Medium630.40.9518
Triple Number Coastal/Long Distance High545.11.1008
Triple Number Windward/Leeward Low992.20.6047
Triple Number Windward/Leeward Medium767.90.7814
Triple Number Windward/Leeward High663.90.9037
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1493.21074.2850.6735.1655.4601.8559.7482.9436.2
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance680.3
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1493.21074.2850.6735.1655.4601.8559.7482.9436.2
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low785.80.7636
Triple Number Coastal/Long Distance Medium630.40.9518
Triple Number Coastal/Long Distance High545.11.1008
Triple Number Windward/Leeward Low992.20.6047
Triple Number Windward/Leeward Medium767.90.7814
Triple Number Windward/Leeward High663.90.9037
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating680.30.8820
FinRating, kevyt tuuli1120.10.8928
FinRating, kova tuuli507.50.9851
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low785.80.7636
Triple Number Coastal/Long Distance Medium630.40.9518
Triple Number Coastal/Long Distance High545.11.1008
Triple Number Windward/Leeward Low992.20.6047
Triple Number Windward/Leeward Medium767.90.7814
Triple Number Windward/Leeward High663.90.9037
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance0.8820
Triple Number Coastal/Long Distance Low0.7636
Triple Number Coastal/Long Distance Medium0.9518
Triple Number Coastal/Long Distance High1.1008
Triple Number Windward/Leeward Low0.6047
Triple Number Windward/Leeward Medium0.7814
Triple Number Windward/Leeward High0.9037
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1493.21074.2850.6735.1655.4601.8559.7482.9436.2
For information
General Purpose Handicap (GPH)700.7
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance680.30.8820
Triple Number Coastal/Long Distance Low785.80.7636
Triple Number Coastal/Long Distance Medium630.40.9518
Triple Number Coastal/Long Distance High545.11.1008
Triple Number Windward/Leeward Low992.20.6047
Triple Number Windward/Leeward Medium767.90.7814
Triple Number Windward/Leeward High663.90.9037
Saronikos S All Purpose707.50.8481
Saronikos S Upwind824.80.7275
Saronikos S Downwind557.51.0763
Saronikos N All Purpose707.50.8481
Saronikos N Upwind852.10.7042
Saronikos N Downwind631.60.9500
Saronikos SW All Purpose705.80.8501
Saronikos SW Upwind839.80.7144
Saronikos SW Downwind568.91.0547
Saronikos NE All Purpose760.70.7888
Saronikos NE Upwind793.60.7561
Saronikos NE Downwind694.90.8635
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1493.21074.2850.6735.1655.4601.8559.7482.9436.2
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low785.80.7636
Triple Number Coastal/Long Distance Medium630.40.9518
Triple Number Coastal/Long Distance High545.11.1008
Triple Number Windward/Leeward Low992.20.6047
Triple Number Windward/Leeward Medium767.90.7814
Triple Number Windward/Leeward High663.90.9037
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose645.00.9302
5-Band All Purpose Low924.00.6493
5-Band All Purpose L/M727.40.8249
5-Band All Purpose Med640.80.9364
5-Band All Purpose M/H573.11.0469
5-Band All Purpose High520.41.1530
Single Number Predominant Upwind693.10.8656
Single Number Predominant Reaching601.50.9975
Single Number Predominant Downwind625.10.9598
5-Band 50-50 Windward/Leeward Low1143.10.5249
5-Band 50-50 Windward/Leeward L/M871.30.6886
5-Band 50-50 Windward/Leeward Med755.50.7941
5-Band 50-50 Windward/Leeward M/H679.90.8825
5-Band 50-50 Windward/Leeward High619.90.9680
5-Band 60-40 Windward/Leeward Low1162.40.5162
5-Band 60-40 Windward/Leeward L/M890.00.6742
5-Band 60-40 Windward/Leeward Med775.90.7733
5-Band 60-40 Windward/Leeward M/H706.20.8497
5-Band 60-40 Windward/Leeward High657.70.9123
Triple Number 50-50 Windward/Leeward Low1034.00.5803
Triple Number 50-50 Windward/Leeward Med768.00.7813
Triple Number 50-50 Windward/Leeward High663.90.9037
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward789.90.7596
Triple Number 60-40 Windward/Leeward Low1052.70.5700
Triple Number 60-40 Windward/Leeward Med787.90.7616
Triple Number 60-40 Windward/Leeward High693.00.8658
Triple Number All-Purpose Low844.50.7105
Triple Number All-Purpose Med650.90.9219
Triple Number All-Purpose High558.81.0737
Triple Number Predominant Upwind Low879.00.6826
Triple Number Predominant Upwind Med688.10.8719
Triple Number Predominant Upwind High623.90.9617
Triple Number Predominant Reaching Low766.10.7832
Triple Number Predominant Reaching Med608.50.9860
Triple Number Predominant Reaching High497.41.2063
Triple Number Predominant Downwind Low820.70.7311
Triple Number Predominant Downwind Med618.40.9703
Triple Number Predominant Downwind High489.91.2247
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance680.30.8820
Triple Number Coastal/Long Distance Low785.80.7636
Triple Number Coastal/Long Distance Medium630.40.9518
Triple Number Coastal/Long Distance High545.11.1008
Triple Number Windward/Leeward Low992.20.6047
Triple Number Windward/Leeward Medium767.90.7814
Triple Number Windward/Leeward High663.90.9037
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1493.21074.2850.6735.1655.4601.8559.7482.9436.2
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance680.30.8820
Triple Number Coastal/Long Distance Low785.80.7636
Triple Number Coastal/Long Distance Medium630.40.9518
Triple Number Coastal/Long Distance High545.11.1008
Triple Number Windward/Leeward Low992.20.6047
Triple Number Windward/Leeward Medium767.90.7814
Triple Number Windward/Leeward High663.90.9037
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1493.21074.2850.6735.1655.4601.8559.7482.9436.2
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low785.8
Triple Number Coastal/Long Distance Medium630.4
Triple Number Coastal/Long Distance High545.1
Triple Number Windward/Leeward Low992.2
Triple Number Windward/Leeward Medium767.9
Triple Number Windward/Leeward High663.9
Predominantly Upwind694.3
Predominantly Downwind624.1
Predominantly Reaching605.0
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance680.30.8820
Triple Number Coastal/Long Distance Low785.80.7636
Triple Number Coastal/Long Distance Medium630.40.9518
Triple Number Coastal/Long Distance High545.11.1008
Triple Number Windward/Leeward Low992.20.6047
Triple Number Windward/Leeward Medium767.90.7814
Triple Number Windward/Leeward High663.90.9037
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1493.21074.2850.6735.1655.4601.8559.7482.9436.2
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7636
Triple Number Coastal/Long Distance Medium0.9518
Triple Number Coastal/Long Distance High1.1008
Triple Number Windward/Leeward Low0.6047
Triple Number Windward/Leeward Medium0.7814
Triple Number Windward/Leeward High0.9037
Coastal/Long Distance0.8820
Predominantly Upwind0.8642
Predominantly Downwind0.9615
For information
General Purpose Handicap (GPH)700.7
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)0.9547
Distanseseilas Trippeltall svak vind0.7636
Distanseseilas Trippeltall mellomvind0.9518
Distanseseilas Trippeltall sterk vind1.1008
Pølsebane Trippeltall svak vind0.6047
Pølsebane Trippeltall mellomvind0.7814
Pølsebane Trippeltall sterk vind0.9037
Motvind Singeltall0.8642
Medvind Singeltall0.9615
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low785.80.7636
Triple Number Coastal/Long Distance Medium630.40.9518
Triple Number Coastal/Long Distance High545.11.1008
Triple Number Windward/Leeward Low992.20.6047
Triple Number Windward/Leeward Medium767.90.7814
Triple Number Windward/Leeward High663.90.9037
Coastal/Long Distance680.30.8820
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind694.30.8642
Predominantly Downwind624.10.9615
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore577.31.0393
Cape Doctor Coastal479.91.2504
Triple Number Coastal/Long Distance Low785.80.7636
Triple Number Coastal/Long Distance Medium630.40.9518
Triple Number Coastal/Long Distance High545.11.1008
Triple Number Windward/Leeward Low992.20.6047
Triple Number Windward/Leeward Medium767.90.7814
Triple Number Windward/Leeward High663.90.9037
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7636
Triple Number Coastal/Long Distance Medium0.9518
Triple Number Coastal/Long Distance High1.1008
Triple Number Windward/Leeward Low0.6047
Triple Number Windward/Leeward Medium0.7814
Triple Number Windward/Leeward High0.9037
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7636
Triple Number Coastal/Long Distance Medium0.9518
Triple Number Coastal/Long Distance High1.1008
Triple Number Windward/Leeward Low0.6047
Triple Number Windward/Leeward Medium0.7814
Triple Number Windward/Leeward High0.9037
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance680.30.8820
Triple Number Coastal/Long Distance Low785.80.7636
Triple Number Coastal/Long Distance Medium630.40.9518
Triple Number Coastal/Long Distance High545.11.1008
Triple Number Windward/Leeward Low992.20.6047
Triple Number Windward/Leeward Medium767.90.7814
Triple Number Windward/Leeward High663.90.9037
Predominantly Upwind694.30.8642
Predominantly Downwind624.10.9615
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1493.21074.2850.6735.1655.4601.8559.7482.9436.2
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance680.30.8820
Triple Number Coastal/Long Distance Low785.80.7636
Triple Number Coastal/Long Distance Medium630.40.9518
Triple Number Coastal/Long Distance High545.11.1008
Triple Number Windward/Leeward Low992.20.6047
Triple Number Windward/Leeward Medium767.90.7814
Triple Number Windward/Leeward High663.90.9037
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1493.21074.2850.6735.1655.4601.8559.7482.9436.2
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP645.00.9302 Predom. Dn High446.91.3425 5B AP M/H558.11.0751 TriNum AP Low785.70.7636 Predom. Rc Low826.50.7260 5B AP High509.71.1773 TriNum AP Med630.50.9517 Predom. Rc L/M663.00.9050 5B SF Bay Low986.10.6084 TriNum AP High545.11.1008 Predom. Rc Med587.91.0207 5B SF Bay L/M837.60.7164 TriNum W/L Low1034.00.5803 Predom. Rc M/H522.01.1495 5B SF Bay Med732.10.8196 TriNum W/L Med767.90.7814 Predom. Rc High469.91.2769 5B SF Bay M/H659.60.9096 TriNum W/L Hig663.90.9037 5B W/L Low1143.10.5249 5B SF Bay High604.90.9919 Predom. Upwind715.00.8391 5B W/L L/M871.30.6886 ChiMac Up Low854.50.7021 Predom. Reaching614.10.9771 5B W/L Med755.50.7941 ChiMac Up Med778.60.7706 Predom. Downwind638.10.9402 5B W/L M/H679.90.8825 ChiMac Up High687.10.8733 Predom. Up Low955.50.6279 5B W/L High619.90.9680 ChiMac Off Low793.00.7566 Predom. Up L/M758.10.7915 W/L 60-40 Low1162.40.5162 ChiMac Off Med708.70.8466 Predom. Up Med676.00.8875 W/L 60-40 L/M890.00.6742 ChiMac Off High599.31.0012 Predom. Up M/H622.20.9643 W/L 60-40 Med775.90.7733 ChiMac AP Low820.10.7316 Predom. Up High592.61.0125 W/L 60-40 M/H706.20.8497 ChiMac AP Med741.00.8097 Predom. Dn Low900.50.6663 W/L 60-40 High657.70.9123 ChiMac AP High641.60.9352 Predom. Dn L/M700.80.8562 5B AP Low850.10.7058 BayMac Cove Island926.70.6475 Predom. Dn Med608.40.9862 5B AP L/M703.50.8529 BayMac Shore920.90.6515 Predom. Dn M/H525.11.1426 5B AP Med620.80.9665 Harvest Moon535.41.1207      SA/DSPL Up33.04SA/DSPL Dn89.62
ORC Ref  03190004F7H Issued on 27/02/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
OSSO DI SEPPIAITA-18185
FEDERAZIONE ITALIANA VELA
Distr.:UVAI  www.uvai.it
Tel. + 39068841273
E-mail  segreteria@uvai.it
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassTwister 650Measurement01/04/1996HINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall6.090Maximum beam3.000Draft1.600Displacement1,000Wetted area9.92IMS L5.750LSM05.373Accomod. length6.090Sink (kg/mm) 8.86
VCGD-0.280VCGM-0.281 RM Rated (kg·m) 51.0Limit of positive stability(°) 116.9 Stability Index 108.2 BLR index 0.0000Default crew weight284 Declared crew weight 300
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeNo Propeller
Hydro generatorNo
RIG
BackstayNot installedForestayFixedInner forestayNot installedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritYesNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysYesCheckstaysYesSpreaders2Rotating mastNo
P8.500IG9.000ISP9.010MDT10.080MDL10.120MDT20.070MDL20.070TL1.500MW0.120GO0.140
E3.650J2.500BAS0.500FSDNo FoilSFJ0.050SPLWPLTPS5.000BD0.100MWTMCG
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.280Flotation Date01/01/2013
SFFP0.292FFM0.793FF0.793LCFcl3.536SG1.0243
SAFP5.712FAM0.693FA0.693LCFsh3.787HBI0.750
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03190004F7H Issued on 27/02/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
OSSO DI SEPPIAITA-18185
FEDERAZIONE ITALIANA VELA
Distr.:UVAI  www.uvai.it
Tel. + 39068841273
E-mail  segreteria@uvai.it
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentA1.431.452.032.673.1321.7412/03/2025
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentB0.241.001.763.284.054.819.90NoYes028.2512/03/2025A0.060.340.651.372.132.508.40NoNo 11.3012/03/2025
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentA12.109.8010.957.357.8094%67.8912/03/2025
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
ORC Ref  03190004F7H Issued on 27/02/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org