Club
Certificate
2023

Boat

Zephyr

NOR 9825

Norges Seilforbund
Sognsveien 73
0854 OSLO
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat Angles41.8°40.0°39.4°39.0°38.8°38.7°39.6°
Beat VMG3.704.174.424.564.654.704.67
52°5.556.146.406.546.636.696.71
60°5.836.396.626.746.826.886.92
75°6.046.616.856.987.077.137.22
90°5.976.656.977.167.287.387.51
110°5.716.627.017.227.397.547.80
120°5.546.587.057.367.607.788.10
135°4.956.116.837.237.607.968.66
150°4.085.186.186.857.247.598.41
Run VMG3.534.495.366.096.667.087.76
Gybe Angles136.8°148.7°150.5°159.2°175.4°179.0°179.0°

APH: 585.5

CDL: 8.126

GPH: 646.7

CertNo: 7846

BOAT
ClassELVSTRØM 10,5DesignerElvstrøm/KjærulfBuilderAge date01/1984Series date01/1981Offset fileelv10_5cl.offData file7846
HULL
Length Overall10.500 mMaximum Beam2.402 mDraft1.672 mDisplacement4,242 kgDLR6.0233IMS DivisionCruiser/RacerDynamic Allowance0.000%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.380m
CREW
Maximum weight583 kgMinimum weight437 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail35.7236.53Headsail Luffed32.6432.64Headsail FlyingSymmetric77.5377.53Asymmetric
STORM SAIL AREAS (m²)
Trysail10.24Storm Jib6.76Heavy Weather Jib18.23
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  03440002MA1Issued on 22/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

Zephyr

NOR 9825

Norges Seilforbund
Sognsveien 73
0854 OSLO
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG973.4862.7815.2788.7773.5765.4770.8
52°648.2586.0562.2550.1542.9538.5536.5
60°617.8563.0543.7533.8527.5523.4520.2
75°596.2544.5525.8515.9509.4504.7498.9
90°602.5541.4516.8503.1494.3487.7479.3
110°630.1543.6513.4498.4486.9477.3461.5
120°649.8547.2510.7489.5473.9462.7444.6
135°727.7589.4527.3497.7473.7452.4415.5
150°882.3694.6582.4525.3497.5474.1428.2
Run VMG1018.8802.0672.2590.8540.4508.8463.9
Selected Courses
Windward / Leeward996.1832.3743.7689.8657.0637.1617.3
All purpose763.5652.8600.1570.6552.8540.5524.9
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward714.70.8395
All purpose585.51.0247
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low708.10.8473
Triple Number Coastal/Long Distance Medium582.91.0294
Triple Number Coastal/Long Distance High537.71.1158
Triple Number Windward/Leeward Low914.20.6563
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High634.70.9454
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance636.10.9433
Triple Number Coastal/Long Distance Low708.10.8473
Triple Number Coastal/Long Distance Medium582.91.0294
Triple Number Coastal/Long Distance High537.71.1158
Triple Number Windward/Leeward Low914.20.6563
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High634.70.9454
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance998.4783.2672.6607.8572.6545.5503.3
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7305
Downwind "popa"0.9137
70% up, 30% down "Ilhabela"0.7772
30% up, 70% down "Ilhabela-inverso"0.8497
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low708.10.8473
Triple Number Coastal/Long Distance Medium582.91.0294
Triple Number Coastal/Long Distance High537.71.1158
Triple Number Windward/Leeward Low914.20.6563
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High634.70.9454
Predominantly Upwind635.00.9449
Predominantly Downwind582.51.0301
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low708.10.8473
Triple Number All Purpose Medium582.91.0294
Triple Number All Purpose High537.71.1158
Triple Number Windward/Leeward Low914.20.6563
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High634.70.9454
Predominantly Upwind635.00.9449
Predominantly Downwind582.51.0301
Predominantly Upwind Low780.30.7689
Predominantly Upwind Medium664.90.9024
Predominantly Upwind High638.30.9399
Predominantly Downwind Low783.10.7662
Predominantly Downwind Medium574.21.0450
Predominantly Downwind High489.31.2263
Chicago-Mac Upwind0.9293
Chicago-Mac All Purpose0.9671
Chicago-Mac Downwind1.0125
Bayview-Mac Cove Island0.9184
Bayview-Mac Shore0.9205
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching552.31.0864
Predominantly Reaching Low640.60.9367
Predominantly Reaching Medium545.71.0995
Predominantly Reaching High498.81.2028
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low983.50.6101
5-Band Low / Medium848.40.7072
5-Band Medium700.80.8562
5-Band Medium / High641.60.9352
5-Band High620.80.9666
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance636.10.9433
Triple Number Coastal/Long Distance Low708.10.8473
Triple Number Coastal/Long Distance Medium582.91.0294
Triple Number Coastal/Long Distance High537.71.1158
Triple Number Windward/Leeward Low914.20.6563
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High634.70.9454
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance998.4783.2672.6607.8572.6545.5503.3
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance636.10.9433
Triple Number Coastal/Long Distance Low708.10.8473
Triple Number Coastal/Long Distance Medium582.91.0294
Triple Number Coastal/Long Distance High537.71.1158
Triple Number Windward/Leeward Low914.20.6563
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High634.70.9454
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance998.4783.2672.6607.8572.6545.5503.3
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance636.1
Triple Number Coastal/Long Distance Low708.1
Triple Number Coastal/Long Distance Medium582.9
Triple Number Coastal/Long Distance High537.7
Triple Number Windward/Leeward Low914.2
Triple Number Windward/Leeward Medium711.4
Triple Number Windward/Leeward High634.7
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance998.4783.2672.6607.8572.6545.5503.3
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance636.10.9433
Triple Number Coastal/Long Distance Low708.10.8473
Triple Number Coastal/Long Distance Medium582.91.0294
Triple Number Coastal/Long Distance High537.71.1158
Triple Number Windward/Leeward Low914.20.6563
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High634.70.9454
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance998.4783.2672.6607.8572.6545.5503.3
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)636.10.9433
Triple Number Coastal/Long Distance Low708.10.8473
Triple Number Coastal/Long Distance Medium582.91.0294
Triple Number Coastal/Long Distance High537.71.1158
Triple Number Windward/Leeward Low914.20.6563
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High634.70.9454
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance998.4783.2672.6607.8572.6545.5503.3
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low708.10.8473
Triple Number Coastal/Long Distance Medium582.91.0294
Triple Number Coastal/Long Distance High537.71.1158
Triple Number Windward/Leeward Low914.20.6563
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High634.70.9454
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8473
Triple Number Coastal/Long Distance Medium1.0294
Triple Number Coastal/Long Distance High1.1158
Triple Number Windward/Leeward Low0.6563
Triple Number Windward/Leeward Medium0.8434
Triple Number Windward/Leeward High0.9454
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance998.4783.2672.6607.8572.6545.5503.3
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance636.10.9433
Triple Number Coastal/Long Distance Low708.10.8473
Triple Number Coastal/Long Distance Medium582.91.0294
Triple Number Coastal/Long Distance High537.71.1158
Triple Number Windward/Leeward Low914.20.6563
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High634.70.9454
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance998.4783.2672.6607.8572.6545.5503.3
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low708.10.8473
Triple Number Coastal/Long Distance Medium582.91.0294
Triple Number Coastal/Long Distance High537.71.1158
Triple Number Windward/Leeward Low914.20.6563
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High634.70.9454
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance636.10.9433
Triple Number Coastal/Long Distance Low708.10.8473
Triple Number Coastal/Long Distance Medium582.91.0294
Triple Number Coastal/Long Distance High537.71.1158
Triple Number Windward/Leeward Low914.20.6563
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High634.70.9454
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance998.4783.2672.6607.8572.6545.5503.3
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low914.20.6563
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High634.70.9454
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance998.4783.2672.6607.8572.6545.5503.3
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low708.1
Triple Number Coastal/Long Distance Medium582.9
Triple Number Coastal/Long Distance High537.7
Triple Number Windward/Leeward Low914.2
Triple Number Windward/Leeward Medium711.4
Triple Number Windward/Leeward High634.7
Predominantly Upwind635.0
Predominantly Downwind582.5
Predominantly Reaching562.3
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance636.10.9433
Triple Number Coastal/Long Distance Low708.10.8473
Triple Number Coastal/Long Distance Medium582.91.0294
Triple Number Coastal/Long Distance High537.71.1158
Triple Number Windward/Leeward Low914.20.6563
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High634.70.9454
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance998.4783.2672.6607.8572.6545.5503.3
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8473
Triple Number Coastal/Long Distance Medium1.0294
Triple Number Coastal/Long Distance High1.1158
Triple Number Windward/Leeward Low0.6563
Triple Number Windward/Leeward Medium0.8434
Triple Number Windward/Leeward High0.9454
Coastal/Long Distance0.9433
Predominantly Upwind0.9449
Predominantly Downwind1.0301
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.8473
Tretall Distanseseilas Mellomvind1.0294
Tretall Distanseseilas Mye vind1.1158
Tretall Pølsebane Lite vind0.6563
Tretall Pølsebane Mellomvind0.8434
Tretall Pølsebane Mye vind0.9454
Distanseseilas ett tall (OSN 8-16kn)0.9433
Distanseseilas ett tall (APH 6-20kn)1.0247
Enkeltall Motvind0.9449
Enkeltall Medvind1.0301
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low708.10.8473
Triple Number Coastal/Long Distance Medium582.91.0294
Triple Number Coastal/Long Distance High537.71.1158
Triple Number Windward/Leeward Low914.20.6563
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High634.70.9454
Coastal/Long Distance636.10.9433
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind635.00.9449
Predominantly Downwind582.51.0301
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore623.30.9627
Cape Doctor Coastal529.61.1329
Triple Number Coastal/Long Distance Low708.10.8473
Triple Number Coastal/Long Distance Medium582.91.0294
Triple Number Coastal/Long Distance High537.71.1158
Triple Number Windward/Leeward Low914.20.6563
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High634.70.9454
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8473
Triple Number Coastal/Long Distance Medium1.0294
Triple Number Coastal/Long Distance High1.1158
Triple Number Windward/Leeward Low0.6563
Triple Number Windward/Leeward Medium0.8434
Triple Number Windward/Leeward High0.9454
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8473
Triple Number Coastal/Long Distance Medium1.0294
Triple Number Coastal/Long Distance High1.1158
Triple Number Windward/Leeward Low0.6563
Triple Number Windward/Leeward Medium0.8434
Triple Number Windward/Leeward High0.9454
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance636.10.9433
Triple Number Coastal/Long Distance Low708.10.8473
Triple Number Coastal/Long Distance Medium582.91.0294
Triple Number Coastal/Long Distance High537.71.1158
Triple Number Windward/Leeward Low914.20.6563
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High634.70.9454
Predominantly Upwind635.00.9449
Predominantly Downwind582.51.0301
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance998.4783.2672.6607.8572.6545.5503.3
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance636.10.9433
Triple Number Coastal/Long Distance Low708.10.8473
Triple Number Coastal/Long Distance Medium582.91.0294
Triple Number Coastal/Long Distance High537.71.1158
Triple Number Windward/Leeward Low914.20.6563
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High634.70.9454
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance998.4783.2672.6607.8572.6545.5503.3
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low708.10.8473
Triple Number All Purpose Medium582.91.0294
Triple Number All Purpose High537.71.1158
Triple Number Windward/Leeward Low914.20.6563
Triple Number Windward/Leeward Medium711.40.8434
Triple Number Windward/Leeward High634.70.9454
Predominantly Upwind635.00.9449
Predominantly Downwind582.51.0301
Predominantly Upwind Low780.30.7689
Predominantly Upwind Medium664.90.9024
Predominantly Upwind High638.30.9399
Predominantly Downwind Low783.10.7662
Predominantly Downwind Medium574.21.0450
Predominantly Downwind High489.31.2263
Chicago-Mac Upwind0.9293
Chicago-Mac All Purpose0.9671
Chicago-Mac Downwind1.0125
Bayview-Mac Cove Island0.9184
Bayview-Mac Shore0.9205
Harvest Moon Regatta512.21.1715
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy625.80.9587
San Francisco Bay Medium704.10.8522
Predominantly Reaching552.31.0864
Predominantly Reaching Low640.60.9367
Predominantly Reaching Medium545.71.0995
Predominantly Reaching High498.81.2028
Windward/Leeward 60-40 Low915.00.6557
Windward/Leeward 60-40 Medium741.50.8092
Windward/Leeward 60-40 High680.50.8817
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low983.50.6101
5-Band Low / Medium848.40.7072
5-Band Medium700.80.8562
5-Band Medium / High641.60.9352
5-Band High620.80.9666
ORC Ref  03440002MA1Issued on 22/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

Zephyr

NOR 9825

Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassELVSTRØM 10,5MeasurementHINPlan reviewHull constructionCoredCarbon RudderNoLight stanchionsNoTrim tabNo
LOA10.500Max. Beam2.402Draft1.672Displacement4,242Wetted area20.00IMS L9.083LSM08.896Acc. length7.806Sink (kg/mm) 13.11
VCGD0.000VCGM0.013RM Rated (kg·m) 38.2Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.380PBWPIPA0.0033
EDL1.700ST10.040ST20.180
ST30.180ST40.110ST50.300
RIG
Forestay tensionAftInner stayNone FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays1Spreaders2Rotating mastNo
P13.000IG11.620ISP11.620MDT10.090MDL10.120MDT20.000MDL20.000TLTaperMW0.000GO0.000
E4.500J3.800BAS1.150FSD0.000SFJ0.230SPL3.880WPLTPS0.000BDMWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered0.000Flotation Date01/01/2015MeasurerComment
SFFP0.699FFMFF1.000LCFcl6.063SG0.0000
SAFP9.680FAMFA0.800LCFsh6.179HBI0.925
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03440002MA1Issued on 22/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

Zephyr

NOR 9825

Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment421-2011053018000.160.971.783.023.8635.7230/05/2011421-2023042909160.140.771.492.653.5932.5928/04/2023
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment421-2015050814170.000.001.362.724.135.6711.70NoNo 32.6430/04/2012Genua 1 Medium306-2005061318000.000.000.000.000.005.1711.49NoNo 30.2413/06/2005Målt og signert av Christen With 13/6-00.391-2019040823380.100.611.082.022.943.8411.63NoNo 23.2208/04/2019Seilet er målt av Bjørn Stien og målemerkei seilet er underskrevet av han. Kun registrert av meg.623-2020060823140.090.472.631.780.893.5411.68NoNo 19.6008/06/2020EM2
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment64-20060102170011.6011.6011.608.280.0077.5302/01/2006Målt og signert av Jan Hilmar Moe, målernr 64.64-20060614120011.2011.2011.200.000.0065.1814/06/2006Seilet er målt og signert i Trondheim 24/4-98.401-20060819160011.1611.1611.160.000.0064.9519/08/2006306
ORC Ref  03440002MA1Issued on 22/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org