Club Certificate2025
DEMELZAIRL100
ORC
Central Rating Office
Issuing certificates for
Ireland
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 Angles42.7°42.7°41.1°39.6°37.8°37.3°36.9°37.0°38.2°
Beat VMG2.223.033.664.124.424.564.624.654.57
52°3.404.585.415.886.136.276.346.386.38
60°3.584.795.606.016.246.406.496.546.57
75°3.694.905.706.116.356.536.686.846.91
90°3.564.795.666.176.456.606.737.047.22
110°3.484.775.726.246.546.807.057.397.61
120°3.324.605.586.166.506.787.057.618.00
135°2.974.175.175.916.326.616.897.518.24
150°2.503.604.605.436.026.376.647.177.82
Run VMG2.163.123.994.745.375.866.226.737.23
Gybe Angles148.0°148.0°151.6°155.0°161.9°168.7°177.2°178.1°177.7°
APH ToD:645.8CDL: 7.056APH ToT: 0.9290CertNo:
BOAT
ClassSHAMROCKDesignerR.HOLLANDBuilderAge date08/1979Series date01/1975Offset fileH505.BOFData fileIRL100
HULL
Length Overall9.046 mMaximum Beam3.098 mDraft1.671 mDisplacement3,560 kgDLR9.7376IMS DivisionCruiser/RacerDynamic Allowance0.480%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameter0.336m
CREW
Maximum weight595 kg(declared)Minimum weight465 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail17.6517.95Headsail Luffed29.6529.65Headsail FlyingSymmetric58.8658.86Asymmetric
STORM SAIL AREAS (m²)
Trysail5.12Storm Jib6.73Heavy Weather Jib18.16
SAIL LIMITS
Headsails5Spinnakers4
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.
Club Certificate2025
DEMELZAIRL100
ORC
Central Rating Office
Issuing certificates for
Ireland
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 VMG1623.01187.5984.9874.2814.5789.8778.6774.2788.0
52°1059.4785.8665.5612.7587.6573.8567.6564.5564.3
60°1004.2751.1642.9598.9576.8562.8554.6550.1547.9
75°975.3734.1632.0588.8566.9551.3538.9526.3521.1
90°1011.0751.4636.6583.1558.5545.1535.3511.2498.3
110°1035.9755.2629.2577.0550.1529.1510.8487.5473.2
120°1083.8783.0645.2584.5554.1531.2510.4473.2449.9
135°1210.4862.4695.8609.3569.5544.3522.3479.1436.9
150°1442.4999.0781.9662.8598.4565.5542.5501.9460.4
Run VMG1668.31153.5901.5760.2670.0614.2578.6534.8497.9
Selected Courses
Windward / Leeward1643.41170.5943.2817.2742.2702.0678.6654.5643.0
All purpose1259.3911.6749.2666.3621.8597.2581.1559.5546.1
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward779.90.7693
All purpose645.80.9290
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low830.30.7226
Triple Number Coastal/Long Distance Medium641.10.9359
Triple Number Coastal/Long Distance High577.01.0398
Triple Number Windward/Leeward Low1056.90.5677
Triple Number Windward/Leeward Medium773.90.7753
Triple Number Windward/Leeward High675.40.8884
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance699.60.8577
Triple Number Coastal/Long Distance Low830.30.7226
Triple Number Coastal/Long Distance Medium641.10.9359
Triple Number Coastal/Long Distance High577.01.0398
Triple Number Windward/Leeward Low1056.90.5677
Triple Number Windward/Leeward Medium773.90.7753
Triple Number Windward/Leeward High675.40.8884
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1741.21168.8889.9743.4660.1618.6588.2539.1523.7
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6770
Downwind "popa"0.8057
70% up, 30% down "Ilhabela"0.7111
30% up, 70% down "Ilhabela-inverso"0.7622
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low830.30.7226
Triple Number Coastal/Long Distance Medium641.10.9359
Triple Number Coastal/Long Distance High577.01.0398
Triple Number Windward/Leeward Low1056.90.5677
Triple Number Windward/Leeward Medium773.90.7753
Triple Number Windward/Leeward High675.40.8884
Predominantly Upwind694.30.8642
Predominantly Downwind657.40.9127
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low830.40.7226
Triple Number AP Medium641.20.9358
Triple Number AP High577.01.0398
Triple Number Windward/Leeward Low1103.10.5439
Triple Number Windward/Leeward Medium773.90.7753
Triple Number Windward/Leeward High675.40.8884
Single Number Predominant Upwind722.40.8306
Single Number Predominant Reaching648.90.9246
Single Number Predominant Downwind687.50.8727
Predominant Upwind - Low994.30.6034
Predominant Upwind - Low/Med761.90.7875
Predominant Upwind - Medium671.50.8935
Predominant Upwind - Med/High628.70.9543
Predominant Upwind - High613.40.9781
Predominant Downwind Low1007.20.5957
Predominant Downwind Low/Med743.00.8075
Predominant Downwind Medium633.20.9475
Predominant Downwind Med/High570.41.0519
Predominant Downwind High535.81.1199
Predominant Reaching Low899.00.6674
Predominant Reaching Low/Med686.70.8738
Predominant Reaching Medium605.10.9916
Predominant Reaching Med/High561.61.0685
Predominant Reaching High536.01.1195
SA/DSPL Upwind20.20SA/DSPL Downwind32.68
Scoring OptionTODTOT
5-Band Windward/Leeward Low1232.50.4868
5-Band Windward/Leeward Low/Med902.60.6648
5-Band Windward/Leeward Medium759.50.7900
5-Band Windward/Leeward Med/High683.80.8774
5-Band Windward/Leeward High656.70.9137
Windward/Leeward 60-40 Low1235.10.4858
Windward/Leeward 60-40 Low/Med912.20.6578
Windward/Leeward 60-40 Medium773.90.7753
Windward/Leeward 60-40 Med/High703.60.8527
Windward/Leeward 60-40 High680.80.8813
5-Band AP Low921.40.6512
5-Band AP Low/Med725.10.8275
5-Band AP Medium632.30.9489
5-Band AP Med/High583.61.0281
5-Band AP High560.91.0697
5-Band SF Bay Tour - Low1065.10.5633
5-Band SF Bay Tour - Low/Med865.70.6931
5-Band SF Bay Tour - Medium737.00.8141
5-Band SF Bay Tour - Med/High671.00.8941
5-Band SF Bay Tour - High646.00.9289
Chicago-Mac Upwind0.8055
Chicago-Mac All Purpose0.8264
Chicago-Mac Downwind0.8426
Bayview-Mac Cove Island0.6069
Bayview-Mac Shore0.6112
Harvest Moon Regatta570.61.0516
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance699.60.8577
Triple Number Coastal/Long Distance Low830.30.7226
Triple Number Coastal/Long Distance Medium641.10.9359
Triple Number Coastal/Long Distance High577.01.0398
Triple Number Windward/Leeward Low1056.90.5677
Triple Number Windward/Leeward Medium773.90.7753
Triple Number Windward/Leeward High675.40.8884
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1741.21168.8889.9743.4660.1618.6588.2539.1523.7
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance699.60.8577
Triple Number Coastal/Long Distance Low830.30.7226
Triple Number Coastal/Long Distance Medium641.10.9359
Triple Number Coastal/Long Distance High577.01.0398
Triple Number Windward/Leeward Low1056.90.5677
Triple Number Windward/Leeward Medium773.90.7753
Triple Number Windward/Leeward High675.40.8884
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1741.21168.8889.9743.4660.1618.6588.2539.1523.7
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance699.6
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1741.21168.8889.9743.4660.1618.6588.2539.1523.7
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low830.30.7226
Triple Number Coastal/Long Distance Medium641.10.9359
Triple Number Coastal/Long Distance High577.01.0398
Triple Number Windward/Leeward Low1056.90.5677
Triple Number Windward/Leeward Medium773.90.7753
Triple Number Windward/Leeward High675.40.8884
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating699.60.8577
FinRating, kevyt tuuli1214.10.8237
FinRating, kova tuuli565.40.8843
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low830.30.7226
Triple Number Coastal/Long Distance Medium641.10.9359
Triple Number Coastal/Long Distance High577.01.0398
Triple Number Windward/Leeward Low1056.90.5677
Triple Number Windward/Leeward Medium773.90.7753
Triple Number Windward/Leeward High675.40.8884
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8577
Triple Number Coastal/Long Distance Low0.7226
Triple Number Coastal/Long Distance Medium0.9359
Triple Number Coastal/Long Distance High1.0398
Triple Number Windward/Leeward Low0.5677
Triple Number Windward/Leeward Medium0.7753
Triple Number Windward/Leeward High0.8884
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1741.21168.8889.9743.4660.1618.6588.2539.1523.7
For information
General Purpose Handicap (GPH)724.9
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance699.60.8577
Triple Number Coastal/Long Distance Low830.30.7226
Triple Number Coastal/Long Distance Medium641.10.9359
Triple Number Coastal/Long Distance High577.01.0398
Triple Number Windward/Leeward Low1056.90.5677
Triple Number Windward/Leeward Medium773.90.7753
Triple Number Windward/Leeward High675.40.8884
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1741.21168.8889.9743.4660.1618.6588.2539.1523.7
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low830.30.7226
Triple Number Coastal/Long Distance Medium641.10.9359
Triple Number Coastal/Long Distance High577.01.0398
Triple Number Windward/Leeward Low1056.90.5677
Triple Number Windward/Leeward Medium773.90.7753
Triple Number Windward/Leeward High675.40.8884
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance699.60.8577
Triple Number Coastal/Long Distance Low830.30.7226
Triple Number Coastal/Long Distance Medium641.10.9359
Triple Number Coastal/Long Distance High577.01.0398
Triple Number Windward/Leeward Low1056.90.5677
Triple Number Windward/Leeward Medium773.90.7753
Triple Number Windward/Leeward High675.40.8884
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1741.21168.8889.9743.4660.1618.6588.2539.1523.7
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance699.60.8577
Triple Number Coastal/Long Distance Low830.30.7226
Triple Number Coastal/Long Distance Medium641.10.9359
Triple Number Coastal/Long Distance High577.01.0398
Triple Number Windward/Leeward Low1056.90.5677
Triple Number Windward/Leeward Medium773.90.7753
Triple Number Windward/Leeward High675.40.8884
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1741.21168.8889.9743.4660.1618.6588.2539.1523.7
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low830.3
Triple Number Coastal/Long Distance Medium641.1
Triple Number Coastal/Long Distance High577.0
Triple Number Windward/Leeward Low1056.9
Triple Number Windward/Leeward Medium773.9
Triple Number Windward/Leeward High675.4
Predominantly Upwind694.3
Predominantly Downwind657.4
Predominantly Reaching633.8
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance699.60.8577
Triple Number Coastal/Long Distance Low830.30.7226
Triple Number Coastal/Long Distance Medium641.10.9359
Triple Number Coastal/Long Distance High577.01.0398
Triple Number Windward/Leeward Low1056.90.5677
Triple Number Windward/Leeward Medium773.90.7753
Triple Number Windward/Leeward High675.40.8884
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1741.21168.8889.9743.4660.1618.6588.2539.1523.7
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7226
Triple Number Coastal/Long Distance Medium0.9359
Triple Number Coastal/Long Distance High1.0398
Triple Number Windward/Leeward Low0.5677
Triple Number Windward/Leeward Medium0.7753
Triple Number Windward/Leeward High0.8884
Coastal/Long Distance0.8577
Predominantly Upwind0.8642
Predominantly Downwind0.9127
For information
General Purpose Handicap (GPH)724.9
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.9290
Distanseseilas Trippeltall svak vind0.7226
Distanseseilas Trippeltall mellomvind0.9359
Distanseseilas Trippeltall sterk vind1.0398
Pølsebane Trippeltall svak vind0.5677
Pølsebane Trippeltall mellomvind0.7753
Pølsebane Trippeltall sterk vind0.8884
Motvind Singeltall0.8642
Medvind Singeltall0.9127
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low830.30.7226
Triple Number Coastal/Long Distance Medium641.10.9359
Triple Number Coastal/Long Distance High577.01.0398
Triple Number Windward/Leeward Low1056.90.5677
Triple Number Windward/Leeward Medium773.90.7753
Triple Number Windward/Leeward High675.40.8884
Coastal/Long Distance699.60.8577
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind694.30.8642
Predominantly Downwind657.40.9127
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore646.40.9282
Cape Doctor Coastal550.11.0907
Triple Number Coastal/Long Distance Low830.30.7226
Triple Number Coastal/Long Distance Medium641.10.9359
Triple Number Coastal/Long Distance High577.01.0398
Triple Number Windward/Leeward Low1056.90.5677
Triple Number Windward/Leeward Medium773.90.7753
Triple Number Windward/Leeward High675.40.8884
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7226
Triple Number Coastal/Long Distance Medium0.9359
Triple Number Coastal/Long Distance High1.0398
Triple Number Windward/Leeward Low0.5677
Triple Number Windward/Leeward Medium0.7753
Triple Number Windward/Leeward High0.8884
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7226
Triple Number Coastal/Long Distance Medium0.9359
Triple Number Coastal/Long Distance High1.0398
Triple Number Windward/Leeward Low0.5677
Triple Number Windward/Leeward Medium0.7753
Triple Number Windward/Leeward High0.8884
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance699.60.8577
Triple Number Coastal/Long Distance Low830.30.7226
Triple Number Coastal/Long Distance Medium641.10.9359
Triple Number Coastal/Long Distance High577.01.0398
Triple Number Windward/Leeward Low1056.90.5677
Triple Number Windward/Leeward Medium773.90.7753
Triple Number Windward/Leeward High675.40.8884
Predominantly Upwind694.30.8642
Predominantly Downwind657.40.9127
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1741.21168.8889.9743.4660.1618.6588.2539.1523.7
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance699.60.8577
Triple Number Coastal/Long Distance Low830.30.7226
Triple Number Coastal/Long Distance Medium641.10.9359
Triple Number Coastal/Long Distance High577.01.0398
Triple Number Windward/Leeward Low1056.90.5677
Triple Number Windward/Leeward Medium773.90.7753
Triple Number Windward/Leeward High675.40.8884
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1741.21168.8889.9743.4660.1618.6588.2539.1523.7
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low830.40.7226
Triple Number AP Medium641.20.9358
Triple Number AP High577.01.0398
Triple Number Windward/Leeward Low1103.10.5439
Triple Number Windward/Leeward Medium773.90.7753
Triple Number Windward/Leeward High675.40.8884
Single Number Predominant Upwind722.40.8306
Single Number Predominant Reaching648.90.9246
Single Number Predominant Downwind687.50.8727
Predominant Upwind - Low994.30.6034
Predominant Upwind - Low/Med761.90.7875
Predominant Upwind - Medium671.50.8935
Predominant Upwind - Med/High628.70.9543
Predominant Upwind - High613.40.9781
Predominant Downwind Low1007.20.5957
Predominant Downwind Low/Med743.00.8075
Predominant Downwind Medium633.20.9475
Predominant Downwind Med/High570.41.0519
Predominant Downwind High535.81.1199
Predominant Reaching Low899.00.6674
Predominant Reaching Low/Med686.70.8738
Predominant Reaching Medium605.10.9916
Predominant Reaching Med/High561.61.0685
Predominant Reaching High536.01.1195
SA/DSPL Upwind20.20SA/DSPL Downwind32.68
Scoring OptionTODTOT
5-Band Windward/Leeward Low1232.50.4868
5-Band Windward/Leeward Low/Med902.60.6648
5-Band Windward/Leeward Medium759.50.7900
5-Band Windward/Leeward Med/High683.80.8774
5-Band Windward/Leeward High656.70.9137
Windward/Leeward 60-40 Low1235.10.4858
Windward/Leeward 60-40 Low/Med912.20.6578
Windward/Leeward 60-40 Medium773.90.7753
Windward/Leeward 60-40 Med/High703.60.8527
Windward/Leeward 60-40 High680.80.8813
5-Band AP Low921.40.6512
5-Band AP Low/Med725.10.8275
5-Band AP Medium632.30.9489
5-Band AP Med/High583.61.0281
5-Band AP High560.91.0697
5-Band SF Bay Tour - Low1065.10.5633
5-Band SF Bay Tour - Low/Med865.70.6931
5-Band SF Bay Tour - Medium737.00.8141
5-Band SF Bay Tour - Med/High671.00.8941
5-Band SF Bay Tour - High646.00.9289
Chicago-Mac Upwind0.8055
Chicago-Mac All Purpose0.8264
Chicago-Mac Downwind0.8426
Bayview-Mac Cove Island0.6069
Bayview-Mac Shore0.6112
Harvest Moon Regatta570.61.0516
Club Certificate2025
DEMELZAIRL100
ORC
Central Rating Office
Issuing certificates for
Ireland
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassSHAMROCKMeasurement20/09/2025HINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA9.046Max. Beam3.098Draft1.671Displacement3,560Wetted area17.53IMS L7.390LSM07.150Acc. length9.046Sink (kg/mm) 12.24
VCGD0.069VCGM0.054RM Rated (kg·m) 57.7Limit of positive stability(°) N/AStability IndexN/ADefault crew weight427Declared crew weight595
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.336PBWPIPA0.0073
PSD0.025PHD0.070PHL0.123
PSA34.7°ESL0.590
ST10.020ST20.101ST30.101
ST40.053ST50.110
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays1CheckstaysSpreaders1Rotating mastNo
P9.750IG11.500ISP11.500MDT10.125MDL10.161MDT20.125MDL20.161TL0.600MW0.145GO0.175
E3.000J3.580BAS1.300FSD0.021SFJ0.450SPL3.340WPLTPSBD0.087MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered57.7Flotation Date20/09/2025
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
DEMELZAIRL100
ORC
Central Rating Office
Issuing certificates for
Ireland
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment0010.651.161.9617.65
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment00.651.262.535.1811.48NoNo 29.65
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment09.009.009.007.927.5658.86
CRUISER/RACER REQUIREMENTS*
Accommodation length9.0 mTable area0.44 m²Headroom1.62 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity60 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity30 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.