Club
Certificate
2023

Boat

YAK

ITA-513MT

FEDERAZIONE ITALIANA VELA
Distr.:UVAI  www.uvai.it
Tel. + 39068841273
E-mail  segreteria@uvai.it
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat Angles40.2°37.8°36.0°35.8°36.0°36.5°37.6°
Beat VMG3.494.044.304.384.404.404.38
52°5.105.635.936.086.166.206.25
60°5.265.746.106.316.426.486.56
75°5.455.966.336.616.836.977.17
90°5.526.066.576.977.257.538.08
110°5.466.146.707.127.718.6110.04
120°5.386.086.737.418.058.6811.23
135°5.035.796.417.067.989.6412.14
150°4.345.265.856.467.057.9411.76
Run VMG3.764.575.175.716.226.8810.19
Gybe Angles142.4°152.3°161.0°167.6°173.0°137.0°144.4°

APH: 605.1

CDL: 6.130

GPH: 669.0

CertNo: 23/1

BOAT
ClassTwister 650DesignerCossuttiBuilderCrack BoatAge date12/2004Series date12/2004Offset file650POGO2.OFFData fileI513MT
HULL
Length Overall6.500 mMaximum Beam3.000 mDraft1.600 mDisplacement1,000 kgDLR6.4475IMS DivisionSportboatDynamic Allowance0.000%Age Allowance0.487%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight200 kgMinimum weight115 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail24.3025.14Headsail Luffed14.7414.74Headsail Flying28.2531.09SymmetricAsymmetric67.8967.89 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail6.07Storm Jib5.09Heavy Weather Jib13.72
SAIL LIMITS
Headsails5  Spinnakers4
STABILITY
Righting MomentN/AStability IndexN/A
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  03190002IW7Issued on 21/04/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

YAK

ITA-513MT

FEDERAZIONE ITALIANA VELA
Distr.:UVAI  www.uvai.it
Tel. + 39068841273
E-mail  segreteria@uvai.it
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG1031.0890.8836.9822.0817.9819.0821.3
52°706.1640.0606.8592.5584.8580.4576.1
60°684.9627.6590.1571.0561.0555.1548.8
75°660.5604.0569.1544.9527.2516.2502.2
90°652.5593.8547.8516.3496.4478.0445.4
110°659.4586.5537.0505.4467.2418.4358.6
120°669.0592.2535.2485.5447.0414.5320.5
135°715.8622.3562.0509.8450.9373.3296.6
150°828.6684.5615.1557.6511.0453.3306.0
Run VMG956.7788.0695.7630.3579.0523.4353.4
Selected Courses
Windward / Leeward993.9839.4766.3726.1698.5671.2587.4
All purpose784.7683.6630.3596.2569.9542.6486.4
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward740.90.8098
All purpose605.10.9916
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low734.10.8173
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High528.31.1357
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium742.00.8086
Triple Number Windward/Leeward High646.60.9280
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance654.00.9175
Triple Number Coastal/Long Distance Low734.10.8173
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High528.31.1357
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium742.00.8086
Triple Number Windward/Leeward High646.60.9280
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance990.1796.4699.4634.9592.0549.8454.5
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6955
Downwind "popa"0.9279
70% up, 30% down "Ilhabela"0.7520
30% up, 70% down "Ilhabela-inverso"0.8433
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low734.10.8173
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High528.31.1357
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium742.00.8086
Triple Number Windward/Leeward High646.60.9280
Predominantly Upwind666.90.8997
Predominantly Downwind597.11.0049
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low734.10.8173
Triple Number All Purpose Medium608.30.9864
Triple Number All Purpose High528.31.1357
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium742.00.8086
Triple Number Windward/Leeward High646.60.9280
Predominantly Upwind666.90.8997
Predominantly Downwind597.11.0049
Predominantly Upwind Low815.30.7360
Predominantly Upwind Medium698.70.8587
Predominantly Upwind High670.40.8950
Predominantly Downwind Low783.70.7656
Predominantly Downwind Medium596.81.0054
Predominantly Downwind High451.41.3291
Chicago-Mac Upwind0.8880
Chicago-Mac All Purpose0.9364
Chicago-Mac Downwind0.9896
Bayview-Mac Cove Island0.8855
Bayview-Mac Shore0.8872
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching570.81.0512
Predominantly Reaching Low674.70.8892
Predominantly Reaching Medium571.61.0497
Predominantly Reaching High478.71.2534
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low982.00.6110
5-Band Low / Medium858.20.6991
5-Band Medium733.00.8185
5-Band Medium / High666.10.9007
5-Band High601.90.9969
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance654.00.9175
Triple Number Coastal/Long Distance Low734.10.8173
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High528.31.1357
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium742.00.8086
Triple Number Windward/Leeward High646.60.9280
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance990.1796.4699.4634.9592.0549.8454.5
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance654.00.9175
Triple Number Coastal/Long Distance Low734.10.8173
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High528.31.1357
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium742.00.8086
Triple Number Windward/Leeward High646.60.9280
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance990.1796.4699.4634.9592.0549.8454.5
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance654.0
Triple Number Coastal/Long Distance Low734.1
Triple Number Coastal/Long Distance Medium608.3
Triple Number Coastal/Long Distance High528.3
Triple Number Windward/Leeward Low916.6
Triple Number Windward/Leeward Medium742.0
Triple Number Windward/Leeward High646.6
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance990.1796.4699.4634.9592.0549.8454.5
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance654.00.9175
Triple Number Coastal/Long Distance Low734.10.8173
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High528.31.1357
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium742.00.8086
Triple Number Windward/Leeward High646.60.9280
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance990.1796.4699.4634.9592.0549.8454.5
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)654.00.9175
Triple Number Coastal/Long Distance Low734.10.8173
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High528.31.1357
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium742.00.8086
Triple Number Windward/Leeward High646.60.9280
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance990.1796.4699.4634.9592.0549.8454.5
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low734.10.8173
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High528.31.1357
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium742.00.8086
Triple Number Windward/Leeward High646.60.9280
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8173
Triple Number Coastal/Long Distance Medium0.9864
Triple Number Coastal/Long Distance High1.1357
Triple Number Windward/Leeward Low0.6546
Triple Number Windward/Leeward Medium0.8086
Triple Number Windward/Leeward High0.9280
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance990.1796.4699.4634.9592.0549.8454.5
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance654.00.9175
Triple Number Coastal/Long Distance Low734.10.8173
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High528.31.1357
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium742.00.8086
Triple Number Windward/Leeward High646.60.9280
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance990.1796.4699.4634.9592.0549.8454.5
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low734.10.8173
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High528.31.1357
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium742.00.8086
Triple Number Windward/Leeward High646.60.9280
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance654.00.9175
Triple Number Coastal/Long Distance Low734.10.8173
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High528.31.1357
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium742.00.8086
Triple Number Windward/Leeward High646.60.9280
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance990.1796.4699.4634.9592.0549.8454.5
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium742.00.8086
Triple Number Windward/Leeward High646.60.9280
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance990.1796.4699.4634.9592.0549.8454.5
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low734.1
Triple Number Coastal/Long Distance Medium608.3
Triple Number Coastal/Long Distance High528.3
Triple Number Windward/Leeward Low916.6
Triple Number Windward/Leeward Medium742.0
Triple Number Windward/Leeward High646.6
Predominantly Upwind666.9
Predominantly Downwind597.1
Predominantly Reaching578.5
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance654.00.9175
Triple Number Coastal/Long Distance Low734.10.8173
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High528.31.1357
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium742.00.8086
Triple Number Windward/Leeward High646.60.9280
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance990.1796.4699.4634.9592.0549.8454.5
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8173
Triple Number Coastal/Long Distance Medium0.9864
Triple Number Coastal/Long Distance High1.1357
Triple Number Windward/Leeward Low0.6546
Triple Number Windward/Leeward Medium0.8086
Triple Number Windward/Leeward High0.9280
Coastal/Long Distance0.9175
Predominantly Upwind0.8997
Predominantly Downwind1.0049
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.8173
Tretall Distanseseilas Mellomvind0.9864
Tretall Distanseseilas Mye vind1.1357
Tretall Pølsebane Lite vind0.6546
Tretall Pølsebane Mellomvind0.8086
Tretall Pølsebane Mye vind0.9280
Distanseseilas ett tall (OSN 8-16kn)0.9175
Distanseseilas ett tall (APH 6-20kn)0.9916
Enkeltall Motvind0.8997
Enkeltall Medvind1.0049
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low734.10.8173
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High528.31.1357
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium742.00.8086
Triple Number Windward/Leeward High646.60.9280
Coastal/Long Distance654.00.9175
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind666.90.8997
Predominantly Downwind597.11.0049
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore612.50.9796
Cape Doctor Coastal503.21.1923
Triple Number Coastal/Long Distance Low734.10.8173
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High528.31.1357
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium742.00.8086
Triple Number Windward/Leeward High646.60.9280
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8173
Triple Number Coastal/Long Distance Medium0.9864
Triple Number Coastal/Long Distance High1.1357
Triple Number Windward/Leeward Low0.6546
Triple Number Windward/Leeward Medium0.8086
Triple Number Windward/Leeward High0.9280
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8173
Triple Number Coastal/Long Distance Medium0.9864
Triple Number Coastal/Long Distance High1.1357
Triple Number Windward/Leeward Low0.6546
Triple Number Windward/Leeward Medium0.8086
Triple Number Windward/Leeward High0.9280
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance654.00.9175
Triple Number Coastal/Long Distance Low734.10.8173
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High528.31.1357
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium742.00.8086
Triple Number Windward/Leeward High646.60.9280
Predominantly Upwind666.90.8997
Predominantly Downwind597.11.0049
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance990.1796.4699.4634.9592.0549.8454.5
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance654.00.9175
Triple Number Coastal/Long Distance Low734.10.8173
Triple Number Coastal/Long Distance Medium608.30.9864
Triple Number Coastal/Long Distance High528.31.1357
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium742.00.8086
Triple Number Windward/Leeward High646.60.9280
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance990.1796.4699.4634.9592.0549.8454.5
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low734.10.8173
Triple Number All Purpose Medium608.30.9864
Triple Number All Purpose High528.31.1357
Triple Number Windward/Leeward Low916.60.6546
Triple Number Windward/Leeward Medium742.00.8086
Triple Number Windward/Leeward High646.60.9280
Predominantly Upwind666.90.8997
Predominantly Downwind597.11.0049
Predominantly Upwind Low815.30.7360
Predominantly Upwind Medium698.70.8587
Predominantly Upwind High670.40.8950
Predominantly Downwind Low783.70.7656
Predominantly Downwind Medium596.81.0054
Predominantly Downwind High451.41.3291
Chicago-Mac Upwind0.8880
Chicago-Mac All Purpose0.9364
Chicago-Mac Downwind0.9896
Bayview-Mac Cove Island0.8855
Bayview-Mac Shore0.8872
Harvest Moon Regatta504.51.1894
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy630.40.9518
San Francisco Bay Medium724.70.8280
Predominantly Reaching570.81.0512
Predominantly Reaching Low674.70.8892
Predominantly Reaching Medium571.61.0497
Predominantly Reaching High478.71.2534
Windward/Leeward 60-40 Low925.50.6483
Windward/Leeward 60-40 Medium772.50.7767
Windward/Leeward 60-40 High705.40.8505
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low982.00.6110
5-Band Low / Medium858.20.6991
5-Band Medium733.00.8185
5-Band Medium / High666.10.9007
5-Band High601.90.9969
ORC Ref  03190002IW7Issued on 21/04/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

YAK

ITA-513MT

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
LOA6.500Max. Beam3.000Draft1.600Displacement1,000Wetted area9.92IMS L5.659LSM05.373Acc. length6.500Sink (kg/mm) 8.86
VCGD-0.280VCGM-0.281RM Rated (kg·m) 51.0Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeNo Propeller
Hydro generatorNo
PIPA0.0000
RIG
Forestay tensionAftInner stayNone FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritYesNon-circular riggingNoFiber riggingNoRunners/Checkstays2Spreaders2Rotating mastNo
P9.500IG10.000ISP10.010MDT10.080MDL10.120MDT20.070MDL20.070TL1.500MW0.120GO0.140
E3.650J2.500BAS0.500FSDNo FoilSFJ0.050SPLWPLTPS5.000BD0.100MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.280Flotation Date01/01/2013MeasurerComment
SFFP0.292FFMFF0.793LCFcl3.536SG1.0243
SAFP5.712FAMFA0.693LCFsh3.787HBI0.750
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03190002IW7Issued on 21/04/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

YAK

ITA-513MT

FEDERAZIONE ITALIANA VELA
Distr.:UVAI  www.uvai.it
Tel. + 39068841273
E-mail  segreteria@uvai.it
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentA1.431.452.032.673.1324.3020/04/2023
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentB0.241.001.763.284.054.819.90NoYes028.25A0.050.450.851.562.222.829.79YesNo 14.7420/04/2023
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentA12.109.8010.957.357.8094%67.8920/04/2023
ORC Ref  03190002IW7Issued on 21/04/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org