Club
Certificate
2023

Boat

IVORY

NOR 30

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 Angles41.1°39.4°38.2°37.8°37.6°37.2°37.2°
Beat VMG3.203.784.134.304.404.464.53
52°4.755.475.856.036.136.196.27
60°4.955.635.996.186.286.346.43
75°5.085.756.116.336.466.566.70
90°5.015.736.136.386.576.726.97
110°5.055.756.156.406.566.727.04
120°5.446.046.386.636.837.027.35
135°5.596.326.686.997.287.568.07
150°5.236.166.667.227.778.349.36
Run VMG4.545.425.966.396.907.408.95
Gybe Angles151.4°155.9°160.1°159.2°157.7°156.4°154.3°

APH: 615.0

CDL: 6.586

GPH: 677.1

CertNo: 21704

BOAT
ClassIODDesignerBjarne AasBuilderBjarne AasAge dateSeries date01/1936Offset fileCL_IOD.offData file21704
HULL
Length Overall10.180 mMaximum Beam2.052 mDraft1.530 mDisplacement3,488 kgDLR14.1775IMS DivisionCruiser/RacerDynamic Allowance0.390%Age Allowance0.487%
PROPELLER
InstallationNo PropellerTypeN/ADiameterN/A
CREW
Maximum weight353 kgMinimum weight265 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail34.6035.76Headsail Luffed11.3511.35Headsail FlyingSymmetric328.69328.69Asymmetric
STORM SAIL AREAS (m²)
Trysail9.83Storm Jib3.69Heavy Weather Jib9.97
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  03440002N8LIssued on 31/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

IVORY

NOR 30

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 VMG1124.6951.3871.6837.6818.6806.3794.6
52°758.6658.4615.6596.9587.7581.5574.3
60°727.5638.9600.6582.8573.6567.5560.0
75°708.3625.7588.8569.1557.0548.7537.7
90°718.5628.5587.4564.1548.0535.9516.9
110°712.8626.0585.0562.7548.5535.8511.1
120°662.1596.3564.3543.2527.1513.1490.0
135°644.1569.9539.0515.3494.5476.2446.2
150°687.8584.7540.6498.9463.1431.6384.6
Run VMG792.8663.6604.3563.0521.9486.2402.3
Selected Courses
Windward / Leeward958.7807.5738.0700.3670.2646.3598.5
All purpose789.5680.1630.8603.2583.2567.4539.3
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward715.00.8392
All purpose615.00.9757
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low734.80.8166
Triple Number Coastal/Long Distance Medium613.80.9775
Triple Number Coastal/Long Distance High560.81.0699
Triple Number Windward/Leeward Low883.10.6794
Triple Number Windward/Leeward Medium714.30.8400
Triple Number Windward/Leeward High634.30.9459
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance652.80.9191
Triple Number Coastal/Long Distance Low734.80.8166
Triple Number Coastal/Long Distance Medium613.80.9775
Triple Number Coastal/Long Distance High560.81.0699
Triple Number Windward/Leeward Low883.10.6794
Triple Number Windward/Leeward Medium714.30.8400
Triple Number Windward/Leeward High634.30.9459
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance942.1768.4685.8635.9600.5571.1524.0
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6769
Downwind "popa"1.0411
70% up, 30% down "Ilhabela"0.7563
30% up, 70% down "Ilhabela-inverso"0.8964
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low734.80.8166
Triple Number Coastal/Long Distance Medium613.80.9775
Triple Number Coastal/Long Distance High560.81.0699
Triple Number Windward/Leeward Low883.10.6794
Triple Number Windward/Leeward Medium714.30.8400
Triple Number Windward/Leeward High634.30.9459
Predominantly Upwind677.30.8859
Predominantly Downwind586.91.0223
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low734.80.8166
Triple Number All Purpose Medium613.80.9775
Triple Number All Purpose High560.81.0699
Triple Number Windward/Leeward Low883.10.6794
Triple Number Windward/Leeward Medium714.30.8400
Triple Number Windward/Leeward High634.30.9459
Predominantly Upwind677.30.8859
Predominantly Downwind586.91.0223
Predominantly Upwind Low843.30.7115
Predominantly Upwind Medium715.30.8388
Predominantly Upwind High674.70.8893
Predominantly Downwind Low720.10.8332
Predominantly Downwind Medium565.81.0604
Predominantly Downwind High488.81.2275
Chicago-Mac Upwind0.8719
Chicago-Mac All Purpose0.9337
Chicago-Mac Downwind1.0118
Bayview-Mac Cove Island0.8727
Bayview-Mac Shore0.8656
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching590.11.0169
Predominantly Reaching Low674.10.8901
Predominantly Reaching Medium582.21.0307
Predominantly Reaching High532.81.1262
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low947.10.6335
5-Band Low / Medium826.60.7259
5-Band Medium705.80.8501
5-Band Medium / High646.80.9277
5-Band High606.70.9889
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance652.80.9191
Triple Number Coastal/Long Distance Low734.80.8166
Triple Number Coastal/Long Distance Medium613.80.9775
Triple Number Coastal/Long Distance High560.81.0699
Triple Number Windward/Leeward Low883.10.6794
Triple Number Windward/Leeward Medium714.30.8400
Triple Number Windward/Leeward High634.30.9459
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance942.1768.4685.8635.9600.5571.1524.0
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance652.80.9191
Triple Number Coastal/Long Distance Low734.80.8166
Triple Number Coastal/Long Distance Medium613.80.9775
Triple Number Coastal/Long Distance High560.81.0699
Triple Number Windward/Leeward Low883.10.6794
Triple Number Windward/Leeward Medium714.30.8400
Triple Number Windward/Leeward High634.30.9459
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance942.1768.4685.8635.9600.5571.1524.0
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance652.8
Triple Number Coastal/Long Distance Low734.8
Triple Number Coastal/Long Distance Medium613.8
Triple Number Coastal/Long Distance High560.8
Triple Number Windward/Leeward Low883.1
Triple Number Windward/Leeward Medium714.3
Triple Number Windward/Leeward High634.3
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance942.1768.4685.8635.9600.5571.1524.0
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance652.80.9191
Triple Number Coastal/Long Distance Low734.80.8166
Triple Number Coastal/Long Distance Medium613.80.9775
Triple Number Coastal/Long Distance High560.81.0699
Triple Number Windward/Leeward Low883.10.6794
Triple Number Windward/Leeward Medium714.30.8400
Triple Number Windward/Leeward High634.30.9459
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance942.1768.4685.8635.9600.5571.1524.0
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)652.80.9191
Triple Number Coastal/Long Distance Low734.80.8166
Triple Number Coastal/Long Distance Medium613.80.9775
Triple Number Coastal/Long Distance High560.81.0699
Triple Number Windward/Leeward Low883.10.6794
Triple Number Windward/Leeward Medium714.30.8400
Triple Number Windward/Leeward High634.30.9459
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance942.1768.4685.8635.9600.5571.1524.0
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low734.80.8166
Triple Number Coastal/Long Distance Medium613.80.9775
Triple Number Coastal/Long Distance High560.81.0699
Triple Number Windward/Leeward Low883.10.6794
Triple Number Windward/Leeward Medium714.30.8400
Triple Number Windward/Leeward High634.30.9459
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8166
Triple Number Coastal/Long Distance Medium0.9775
Triple Number Coastal/Long Distance High1.0699
Triple Number Windward/Leeward Low0.6794
Triple Number Windward/Leeward Medium0.8400
Triple Number Windward/Leeward High0.9459
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance942.1768.4685.8635.9600.5571.1524.0
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance652.80.9191
Triple Number Coastal/Long Distance Low734.80.8166
Triple Number Coastal/Long Distance Medium613.80.9775
Triple Number Coastal/Long Distance High560.81.0699
Triple Number Windward/Leeward Low883.10.6794
Triple Number Windward/Leeward Medium714.30.8400
Triple Number Windward/Leeward High634.30.9459
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance942.1768.4685.8635.9600.5571.1524.0
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low734.80.8166
Triple Number Coastal/Long Distance Medium613.80.9775
Triple Number Coastal/Long Distance High560.81.0699
Triple Number Windward/Leeward Low883.10.6794
Triple Number Windward/Leeward Medium714.30.8400
Triple Number Windward/Leeward High634.30.9459
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance652.80.9191
Triple Number Coastal/Long Distance Low734.80.8166
Triple Number Coastal/Long Distance Medium613.80.9775
Triple Number Coastal/Long Distance High560.81.0699
Triple Number Windward/Leeward Low883.10.6794
Triple Number Windward/Leeward Medium714.30.8400
Triple Number Windward/Leeward High634.30.9459
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance942.1768.4685.8635.9600.5571.1524.0
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low883.10.6794
Triple Number Windward/Leeward Medium714.30.8400
Triple Number Windward/Leeward High634.30.9459
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance942.1768.4685.8635.9600.5571.1524.0
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low734.8
Triple Number Coastal/Long Distance Medium613.8
Triple Number Coastal/Long Distance High560.8
Triple Number Windward/Leeward Low883.1
Triple Number Windward/Leeward Medium714.3
Triple Number Windward/Leeward High634.3
Predominantly Upwind677.3
Predominantly Downwind586.9
Predominantly Reaching588.4
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance652.80.9191
Triple Number Coastal/Long Distance Low734.80.8166
Triple Number Coastal/Long Distance Medium613.80.9775
Triple Number Coastal/Long Distance High560.81.0699
Triple Number Windward/Leeward Low883.10.6794
Triple Number Windward/Leeward Medium714.30.8400
Triple Number Windward/Leeward High634.30.9459
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance942.1768.4685.8635.9600.5571.1524.0
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8166
Triple Number Coastal/Long Distance Medium0.9775
Triple Number Coastal/Long Distance High1.0699
Triple Number Windward/Leeward Low0.6794
Triple Number Windward/Leeward Medium0.8400
Triple Number Windward/Leeward High0.9459
Coastal/Long Distance0.9191
Predominantly Upwind0.8859
Predominantly Downwind1.0223
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.8166
Tretall Distanseseilas Mellomvind0.9775
Tretall Distanseseilas Mye vind1.0699
Tretall Pølsebane Lite vind0.6794
Tretall Pølsebane Mellomvind0.8400
Tretall Pølsebane Mye vind0.9459
Distanseseilas ett tall (OSN 8-16kn)0.9191
Distanseseilas ett tall (APH 6-20kn)0.9757
Enkeltall Motvind0.8859
Enkeltall Medvind1.0223
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low734.80.8166
Triple Number Coastal/Long Distance Medium613.80.9775
Triple Number Coastal/Long Distance High560.81.0699
Triple Number Windward/Leeward Low883.10.6794
Triple Number Windward/Leeward Medium714.30.8400
Triple Number Windward/Leeward High634.30.9459
Coastal/Long Distance652.80.9191
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind677.30.8859
Predominantly Downwind586.91.0223
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore612.80.9791
Cape Doctor Coastal547.71.0955
Triple Number Coastal/Long Distance Low734.80.8166
Triple Number Coastal/Long Distance Medium613.80.9775
Triple Number Coastal/Long Distance High560.81.0699
Triple Number Windward/Leeward Low883.10.6794
Triple Number Windward/Leeward Medium714.30.8400
Triple Number Windward/Leeward High634.30.9459
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8166
Triple Number Coastal/Long Distance Medium0.9775
Triple Number Coastal/Long Distance High1.0699
Triple Number Windward/Leeward Low0.6794
Triple Number Windward/Leeward Medium0.8400
Triple Number Windward/Leeward High0.9459
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8166
Triple Number Coastal/Long Distance Medium0.9775
Triple Number Coastal/Long Distance High1.0699
Triple Number Windward/Leeward Low0.6794
Triple Number Windward/Leeward Medium0.8400
Triple Number Windward/Leeward High0.9459
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance652.80.9191
Triple Number Coastal/Long Distance Low734.80.8166
Triple Number Coastal/Long Distance Medium613.80.9775
Triple Number Coastal/Long Distance High560.81.0699
Triple Number Windward/Leeward Low883.10.6794
Triple Number Windward/Leeward Medium714.30.8400
Triple Number Windward/Leeward High634.30.9459
Predominantly Upwind677.30.8859
Predominantly Downwind586.91.0223
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance942.1768.4685.8635.9600.5571.1524.0
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance652.80.9191
Triple Number Coastal/Long Distance Low734.80.8166
Triple Number Coastal/Long Distance Medium613.80.9775
Triple Number Coastal/Long Distance High560.81.0699
Triple Number Windward/Leeward Low883.10.6794
Triple Number Windward/Leeward Medium714.30.8400
Triple Number Windward/Leeward High634.30.9459
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance942.1768.4685.8635.9600.5571.1524.0
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low734.80.8166
Triple Number All Purpose Medium613.80.9775
Triple Number All Purpose High560.81.0699
Triple Number Windward/Leeward Low883.10.6794
Triple Number Windward/Leeward Medium714.30.8400
Triple Number Windward/Leeward High634.30.9459
Predominantly Upwind677.30.8859
Predominantly Downwind586.91.0223
Predominantly Upwind Low843.30.7115
Predominantly Upwind Medium715.30.8388
Predominantly Upwind High674.70.8893
Predominantly Downwind Low720.10.8332
Predominantly Downwind Medium565.81.0604
Predominantly Downwind High488.81.2275
Chicago-Mac Upwind0.8719
Chicago-Mac All Purpose0.9337
Chicago-Mac Downwind1.0118
Bayview-Mac Cove Island0.8727
Bayview-Mac Shore0.8656
Harvest Moon Regatta542.61.1057
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy634.70.9453
San Francisco Bay Medium711.60.8432
Predominantly Reaching590.11.0169
Predominantly Reaching Low674.10.8901
Predominantly Reaching Medium582.21.0307
Predominantly Reaching High532.81.1262
Windward/Leeward 60-40 Low914.10.6564
Windward/Leeward 60-40 Medium761.60.7878
Windward/Leeward 60-40 High692.40.8666
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low947.10.6335
5-Band Low / Medium826.60.7259
5-Band Medium705.80.8501
5-Band Medium / High646.80.9277
5-Band High606.70.9889
ORC Ref  03440002N8LIssued on 31/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

IVORY

NOR 30

Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassIODMeasurementHINPlan reviewHull constructionSolidCarbon RudderNoLight stanchionsNoTrim tabNo
LOA10.180Max. Beam2.052Draft1.530Displacement3,488Wetted area16.36IMS L6.816LSM06.265Acc. length6.669Sink (kg/mm) 9.06
VCGD-0.700VCGM-0.548RM Rated (kg·m) 46.4Limit 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/Checkstays1Spreaders2Rotating mastNo
P11.700IG8.590ISP8.810MDT10.108MDL10.151MDT20.080MDL20.100TL2.700MW0.000GO0.000
E4.800J2.580BAS0.900FSD0.000SFJ1.040SPL2.620WPLTPS0.000BDMWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.700Flotation Date01/01/2015MeasurerComment
SFFP0.951FFMFF0.870LCFcl5.161SG0.0000
SAFP9.938FAMFA0.810LCFsh5.256HBI0.774
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03440002N8LIssued on 31/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

IVORY

NOR 30

Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment1-2020061013420.150.001.883.154.2334.6010/06/2020
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment1-2020061013420.000.000.000.000.002.748.14NoNo 11.3510/06/2020
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment1-2020061013429.109.109.1053.000.00328.6910/06/2020
ORC Ref  03440002N8LIssued on 31/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org