Club
One Design
 Certificate
2023

Boat

TRAMONTANA

ITA-101S850

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 Angles42.4°40.0°39.4°40.2°40.6°41.4°42.9°
Beat VMG3.864.394.554.604.604.574.47
52°5.836.426.606.696.746.766.70
60°6.116.676.877.007.087.137.11
75°6.276.957.297.507.667.787.88
90°6.186.957.577.978.268.498.78
110°6.197.037.517.958.639.3010.06
120°6.077.087.798.348.919.4710.57
135°5.486.687.608.669.7210.5412.08
150°4.625.846.747.578.609.8112.95
Run VMG4.005.065.856.557.458.5011.22
Gybe Angles143.0°147.1°151.4°148.7°145.8°144.4°148.0°

APH: 544.3

CDL: 7.531

GPH: 601.6

CertNo: 23/1

BOAT
ClassESSE 850DesignerFELCIBuilderProteus YachtsAge dateSeries date06/2004Offset fileS850.ODData fileI101S850
HULL
Length Overall8.500 mMaximum Beam2.190 mDraft1.999 mDisplacement1,222 kgDLR3.0975IMS DivisionSportboatDynamic Allowance0.000%Age Allowance0.487%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight280 kgMinimum weight195 kg * when appliedNon Manual PowerNoCrew Arm ExtensionLoose or no lifelines
SAIL AREAS (m²)
MeasuredRatedMainsail27.1228.06Headsail Luffed17.4417.44Headsail FlyingSymmetricAsymmetric72.2872.28 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail6.71Storm Jib5.14Heavy Weather Jib13.87
SAIL LIMITS
Headsails5  Spinnakers4
STABILITY
Righting MomentN/AStability IndexN/A
COMMENTS
Intestatario: Tallachini Giulio
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  03190002CQ1Issued on 21/02/2023Valid until 31/12/2023
VPP ver: 2023 1.00 | © ORC | www.orc.org

Club
One Design
 Certificate
2023

Boat

TRAMONTANA

ITA-101S850

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 VMG931.5820.5791.7783.3783.1787.3804.9
52°617.2561.0545.1537.8534.1532.8537.2
60°589.6539.9523.7514.5508.6505.2506.3
75°573.8518.0494.1479.9470.1462.9456.9
90°582.5517.8475.4452.0435.8424.2410.0
110°581.2512.1479.2452.7416.9387.1358.0
120°593.0508.3462.4431.5404.1380.3340.5
135°656.4539.2473.8415.9370.4341.7298.1
150°779.0616.1534.0475.6418.7367.0277.9
Run VMG899.6711.4615.8549.2483.4423.8320.9
Selected Courses
Windward / Leeward915.5765.9703.8666.3633.3605.5562.9
All purpose709.2608.6564.2535.4510.7491.3465.2
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward678.30.8845
All purpose544.31.1023
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium544.91.1011
Triple Number Coastal/Long Distance High486.31.2337
Triple Number Windward/Leeward Low840.70.7137
Triple Number Windward/Leeward Medium678.80.8839
Triple Number Windward/Leeward High596.51.0059
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance592.31.0130
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium544.91.1011
Triple Number Coastal/Long Distance High486.31.2337
Triple Number Windward/Leeward Low840.70.7137
Triple Number Windward/Leeward Medium678.80.8839
Triple Number Windward/Leeward High596.51.0059
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance913.9721.9634.1575.8533.2495.6434.1
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7366
Downwind "popa"1.0489
70% up, 30% down "Ilhabela"0.8088
30% up, 70% down "Ilhabela-inverso"0.9305
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium544.91.1011
Triple Number Coastal/Long Distance High486.31.2337
Triple Number Windward/Leeward Low840.70.7137
Triple Number Windward/Leeward Medium678.80.8839
Triple Number Windward/Leeward High596.51.0059
Predominantly Upwind606.40.9895
Predominantly Downwind524.31.1444
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low658.90.9106
Triple Number All Purpose Medium544.91.1011
Triple Number All Purpose High486.31.2337
Triple Number Windward/Leeward Low840.70.7137
Triple Number Windward/Leeward Medium678.80.8839
Triple Number Windward/Leeward High596.51.0059
Predominantly Upwind606.40.9895
Predominantly Downwind524.31.1444
Predominantly Upwind Low735.40.8158
Predominantly Upwind Medium644.80.9305
Predominantly Upwind High633.00.9478
Predominantly Downwind Low711.70.8431
Predominantly Downwind Medium515.71.1635
Predominantly Downwind High397.21.5105
Chicago-Mac Upwind0.9735
Chicago-Mac All Purpose1.0419
Chicago-Mac Downwind1.1205
Bayview-Mac Cove Island0.9878
Bayview-Mac Shore0.9863
Victoria-Maui1.2514
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance592.31.0130
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium544.91.1011
Triple Number Coastal/Long Distance High486.31.2337
Triple Number Windward/Leeward Low840.70.7137
Triple Number Windward/Leeward Medium678.80.8839
Triple Number Windward/Leeward High596.51.0059
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance913.9721.9634.1575.8533.2495.6434.1
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance592.31.0130
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium544.91.1011
Triple Number Coastal/Long Distance High486.31.2337
Triple Number Windward/Leeward Low840.70.7137
Triple Number Windward/Leeward Medium678.80.8839
Triple Number Windward/Leeward High596.51.0059
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance913.9721.9634.1575.8533.2495.6434.1
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance592.3
Triple Number Coastal/Long Distance Low658.9
Triple Number Coastal/Long Distance Medium544.9
Triple Number Coastal/Long Distance High486.3
Triple Number Windward/Leeward Low840.7
Triple Number Windward/Leeward Medium678.8
Triple Number Windward/Leeward High596.5
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance913.9721.9634.1575.8533.2495.6434.1
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance592.31.0130
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium544.91.1011
Triple Number Coastal/Long Distance High486.31.2337
Triple Number Windward/Leeward Low840.70.7137
Triple Number Windward/Leeward Medium678.80.8839
Triple Number Windward/Leeward High596.51.0059
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance913.9721.9634.1575.8533.2495.6434.1
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)592.31.0130
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium544.91.1011
Triple Number Coastal/Long Distance High486.31.2337
Triple Number Windward/Leeward Low840.70.7137
Triple Number Windward/Leeward Medium678.80.8839
Triple Number Windward/Leeward High596.51.0059
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance913.9721.9634.1575.8533.2495.6434.1
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium544.91.1011
Triple Number Coastal/Long Distance High486.31.2337
Triple Number Windward/Leeward Low840.70.7137
Triple Number Windward/Leeward Medium678.80.8839
Triple Number Windward/Leeward High596.51.0059
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9106
Triple Number Coastal/Long Distance Medium1.1011
Triple Number Coastal/Long Distance High1.2337
Triple Number Windward/Leeward Low0.7137
Triple Number Windward/Leeward Medium0.8839
Triple Number Windward/Leeward High1.0059
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance913.9721.9634.1575.8533.2495.6434.1
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance592.31.0130
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium544.91.1011
Triple Number Coastal/Long Distance High486.31.2337
Triple Number Windward/Leeward Low840.70.7137
Triple Number Windward/Leeward Medium678.80.8839
Triple Number Windward/Leeward High596.51.0059
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance913.9721.9634.1575.8533.2495.6434.1
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium544.91.1011
Triple Number Coastal/Long Distance High486.31.2337
Triple Number Windward/Leeward Low840.70.7137
Triple Number Windward/Leeward Medium678.80.8839
Triple Number Windward/Leeward High596.51.0059
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance592.31.0130
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium544.91.1011
Triple Number Coastal/Long Distance High486.31.2337
Triple Number Windward/Leeward Low840.70.7137
Triple Number Windward/Leeward Medium678.80.8839
Triple Number Windward/Leeward High596.51.0059
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance913.9721.9634.1575.8533.2495.6434.1
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low840.70.7137
Triple Number Windward/Leeward Medium678.80.8839
Triple Number Windward/Leeward High596.51.0059
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance913.9721.9634.1575.8533.2495.6434.1
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low658.9
Triple Number Coastal/Long Distance Medium544.9
Triple Number Coastal/Long Distance High486.3
Triple Number Windward/Leeward Low840.7
Triple Number Windward/Leeward Medium678.8
Triple Number Windward/Leeward High596.5
Predominantly Upwind606.4
Predominantly Downwind524.3
Predominantly Reaching508.5
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance592.31.0130
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium544.91.1011
Triple Number Coastal/Long Distance High486.31.2337
Triple Number Windward/Leeward Low840.70.7137
Triple Number Windward/Leeward Medium678.80.8839
Triple Number Windward/Leeward High596.51.0059
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance913.9721.9634.1575.8533.2495.6434.1
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9106
Triple Number Coastal/Long Distance Medium1.1011
Triple Number Coastal/Long Distance High1.2337
Triple Number Windward/Leeward Low0.7137
Triple Number Windward/Leeward Medium0.8839
Triple Number Windward/Leeward High1.0059
Coastal/Long Distance1.0130
Predominantly Upwind0.9895
Predominantly Downwind1.1444
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.9106
Tretall Distanseseilas Mellomvind1.1011
Tretall Distanseseilas Mye vind1.2337
Tretall Pølsebane Lite vind0.7137
Tretall Pølsebane Mellomvind0.8839
Tretall Pølsebane Mye vind1.0059
Distanseseilas ett tall (OSN 8-16kn)1.0130
Distanseseilas ett tall (APH 6-20kn)1.1023
Enkeltall Motvind0.9895
Enkeltall Medvind1.1444
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium544.91.1011
Triple Number Coastal/Long Distance High486.31.2337
Triple Number Windward/Leeward Low840.70.7137
Triple Number Windward/Leeward Medium678.80.8839
Triple Number Windward/Leeward High596.51.0059
Coastal/Long Distance592.31.0130
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind606.40.9895
Predominantly Downwind524.31.1444
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore575.71.0422
Cape Doctor Coastal473.01.2685
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium544.91.1011
Triple Number Coastal/Long Distance High486.31.2337
Triple Number Windward/Leeward Low840.70.7137
Triple Number Windward/Leeward Medium678.80.8839
Triple Number Windward/Leeward High596.51.0059
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9106
Triple Number Coastal/Long Distance Medium1.1011
Triple Number Coastal/Long Distance High1.2337
Triple Number Windward/Leeward Low0.7137
Triple Number Windward/Leeward Medium0.8839
Triple Number Windward/Leeward High1.0059
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9106
Triple Number Coastal/Long Distance Medium1.1011
Triple Number Coastal/Long Distance High1.2337
Triple Number Windward/Leeward Low0.7137
Triple Number Windward/Leeward Medium0.8839
Triple Number Windward/Leeward High1.0059
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance592.31.0130
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium544.91.1011
Triple Number Coastal/Long Distance High486.31.2337
Triple Number Windward/Leeward Low840.70.7137
Triple Number Windward/Leeward Medium678.80.8839
Triple Number Windward/Leeward High596.51.0059
Predominantly Upwind606.40.9895
Predominantly Downwind524.31.1444
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance913.9721.9634.1575.8533.2495.6434.1
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance592.31.0130
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium544.91.1011
Triple Number Coastal/Long Distance High486.31.2337
Triple Number Windward/Leeward Low840.70.7137
Triple Number Windward/Leeward Medium678.80.8839
Triple Number Windward/Leeward High596.51.0059
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance913.9721.9634.1575.8533.2495.6434.1
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low658.90.9106
Triple Number All Purpose Medium544.91.1011
Triple Number All Purpose High486.31.2337
Triple Number Windward/Leeward Low840.70.7137
Triple Number Windward/Leeward Medium678.80.8839
Triple Number Windward/Leeward High596.51.0059
Predominantly Upwind606.40.9895
Predominantly Downwind524.31.1444
Predominantly Upwind Low735.40.8158
Predominantly Upwind Medium644.80.9305
Predominantly Upwind High633.00.9478
Predominantly Downwind Low711.70.8431
Predominantly Downwind Medium515.71.1635
Predominantly Downwind High397.21.5105
Chicago-Mac Upwind0.9735
Chicago-Mac All Purpose1.0419
Chicago-Mac Downwind1.1205
Bayview-Mac Cove Island0.9878
Bayview-Mac Shore0.9863
Harvest Moon Regatta447.61.3404
Victoria-Maui1.2514
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy586.51.0229
San Francisco Bay Medium662.80.9052
Predominantly Reaching1.1906
Predominantly Reaching Low1.0015
Predominantly Reaching Medium1.2034
Predominantly Reaching High1.3843
Windward/Leeward 60-40 Low847.80.7077
Windward/Leeward 60-40 Medium716.30.8377
Windward/Leeward 60-40 High663.30.9046
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low904.00.6637
5-Band Low / Medium786.60.7628
5-Band Medium670.10.8954
5-Band Medium / High608.20.9866
5-Band High570.31.0521
ORC Ref  03190002CQ1Issued on 21/02/2023Valid until 31/12/2023
VPP ver: 2023 1.00 | © ORC | www.orc.org

Club
One Design
 Certificate
2023

Boat

TRAMONTANA

ITA-101S850

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)
ClassESSE 850Measurement01/01/2010HINPlan reviewHull constructionCoredCarbon RudderNoLight stanchionsNoTrim tabNo
LOA8.500Max. Beam2.190Draft1.999Displacement1,222Wetted area12.99IMS L7.794LSM07.334Acc. length7.117Sink (kg/mm) 9.82
VCGD-0.279VCGM-0.272RM Rated (kg·m) 34.7Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeNo Propeller
Hydro generatorNo
PIPA0.0000
RIG
Forestay tensionAftInner stayNone FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders2Rotating mastNo
P10.500IG10.000ISP11.500MDT10.082MDL10.124MDT20.070MDL20.090TL1.140MW0.124GO0.165
E3.650J3.070BAS1.156FSDSFJ0.260SPL0.000WPLTPS4.920BD0.136MWT57.00MCG4.260
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodPoles incliningFlotation Date08/07/2004MeasurerComment
SFFP0.060FFMFF0.825LCFcl4.481SG1.0000
SAFP8.000FAMFA0.725LCFsh4.603HBI0.756
W136.8W236.8W336.8W436.8
PD1628.3PD2629.9PD3620.9PD4622.0
WD7.910PLM9000.00GSA1.0RSA1.0RM36.7
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03190002CQ1Issued on 21/02/2023Valid until 31/12/2023
VPP ver: 2023 1.00 | © ORC | www.orc.org

Club
One Design
 Certificate
2023

Boat

TRAMONTANA

ITA-101S850

FEDERAZIONE ITALIANA VELA
Distr.:UVAI  www.uvai.it
Tel. + 39068841273
E-mail  segreteria@uvai.it
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentM11.061.402.002.803.2427.12Class
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentJ10.063.4010.10NoNo 17.44Class
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentASP113.2511.2512.257.007.4095%72.28Class
ORC Ref  03190002CQ1Issued on 21/02/2023Valid until 31/12/2023
VPP ver: 2023 1.00 | © ORC | www.orc.org