Club Certificate2025
TONGAIRL415
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 Angles42.9°42.9°41.2°39.4°37.9°37.4°37.2°37.2°38.0°
Beat VMG2.243.053.654.104.334.434.484.534.49
52°3.444.615.415.826.036.136.186.246.25
60°3.654.835.595.966.156.266.326.416.44
75°3.764.955.696.076.286.446.546.686.77
90°3.664.855.636.106.336.516.676.927.09
110°3.524.795.716.196.496.746.947.287.54
120°3.374.635.586.126.456.737.007.578.01
135°3.024.205.165.876.276.576.857.518.34
150°2.523.614.595.405.976.316.597.157.87
Run VMG2.183.133.994.715.355.826.176.707.22
Gybe Angles148.0°148.0°151.9°155.2°162.8°169.8°177.7°178.3°177.2°
APH ToD:652.7CDL: 6.702APH ToT: 0.9193CertNo:
BOAT
ClassSHIPMAN 28DesignerENDERLEIN OLLEBuilderSHIPMANAge date01/1979Series date07/1970Offset fileH4632E.OFFData fileIRL415
HULL
Length Overall8.860 mMaximum Beam2.570 mDraft1.515 mDisplacement2,800 kgDLR9.8890IMS DivisionPerformanceDynamic Allowance0.390%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameterm
CREW
Maximum weight510 kg(declared)Minimum weight380 kg ✱ when appliedNon Manual PowerCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail17.0917.30Headsail Luffed26.1226.12Headsail FlyingSymmetric49.7849.78Asymmetric
STORM SAIL AREAS (m²)
Trysail5.37Storm Jib5.41Heavy Weather Jib14.61
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.
ORC Ref  038800040VTIssued on 22/09/2025Valid until 31/12/2025
VPP ver: 2025 1.01 | © ORC | www.orc.org
Club Certificate2025
TONGAIRL415
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 VMG1608.01182.2985.2879.1831.1813.1803.0795.1801.6
52°1045.9780.5666.1618.4597.0587.5582.5576.7575.8
60°987.2744.8643.8604.4584.9574.6569.2561.9559.2
75°957.0726.8632.3593.5572.8559.2550.3539.1531.9
90°983.4742.4639.2590.0568.6553.0539.5520.6507.4
110°1024.0751.6630.9581.5554.4534.5518.5494.4477.3
120°1068.2777.4645.7588.4558.1534.7514.0475.3449.7
135°1193.1857.3697.5613.7574.6548.4525.3479.1431.7
150°1430.0996.1783.6666.1603.4570.4546.4503.6457.7
Run VMG1655.01150.2903.3763.6673.4618.6583.1537.6498.6
Selected Courses
Windward / Leeward1629.31166.2944.2821.3752.2715.8693.1666.3650.1
All purpose1243.6906.4750.3670.9630.0607.5591.7568.9552.1
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward788.50.7610
All purpose652.70.9193
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low828.40.7243
Triple Number Coastal/Long Distance Medium648.00.9259
Triple Number Coastal/Long Distance High587.11.0220
Triple Number Windward/Leeward Low1055.20.5686
Triple Number Windward/Leeward Medium782.20.7671
Triple Number Windward/Leeward High688.70.8712
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance706.90.8487
Triple Number Coastal/Long Distance Low828.40.7243
Triple Number Coastal/Long Distance Medium648.00.9259
Triple Number Coastal/Long Distance High587.11.0220
Triple Number Windward/Leeward Low1055.20.5686
Triple Number Windward/Leeward Medium782.20.7671
Triple Number Windward/Leeward High688.70.8712
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1725.81164.6891.0747.8669.2629.4598.4547.1529.5
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6679
Downwind "popa"0.8031
70% up, 30% down "Ilhabela"0.7034
30% up, 70% down "Ilhabela-inverso"0.7571
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low828.40.7243
Triple Number Coastal/Long Distance Medium648.00.9259
Triple Number Coastal/Long Distance High587.11.0220
Triple Number Windward/Leeward Low1055.20.5686
Triple Number Windward/Leeward Medium782.20.7671
Triple Number Windward/Leeward High688.70.8712
Predominantly Upwind702.90.8536
Predominantly Downwind662.30.9059
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low828.40.7243
Triple Number AP Medium648.10.9258
Triple Number AP High587.11.0220
Triple Number Windward/Leeward Low1100.50.5452
Triple Number Windward/Leeward Medium782.20.7671
Triple Number Windward/Leeward High688.70.8712
Single Number Predominant Upwind729.60.8224
Single Number Predominant Reaching653.40.9182
Single Number Predominant Downwind691.10.8682
Predominant Upwind - Low987.60.6075
Predominant Upwind - Low/Med764.90.7844
Predominant Upwind - Medium681.40.8806
Predominant Upwind - Med/High642.30.9341
Predominant Upwind - High625.60.9591
Predominant Downwind Low1000.80.5995
Predominant Downwind Low/Med745.50.8049
Predominant Downwind Medium639.30.9386
Predominant Downwind Med/High577.01.0399
Predominant Downwind High540.81.1095
Predominant Reaching Low891.20.6733
Predominant Reaching Low/Med689.60.8701
Predominant Reaching Medium612.50.9796
Predominant Reaching Med/High569.41.0538
Predominant Reaching High543.21.1047
SA/DSPL Upwind21.68SA/DSPL Downwind33.55
Scoring OptionTODTOT
5-Band Windward/Leeward Low1227.00.4890
5-Band Windward/Leeward Low/Med905.20.6628
5-Band Windward/Leeward Medium768.70.7805
5-Band Windward/Leeward Med/High697.40.8604
5-Band Windward/Leeward High668.10.8980
Windward/Leeward 60-40 Low1229.50.4880
Windward/Leeward 60-40 Low/Med915.00.6557
Windward/Leeward 60-40 Medium784.30.7650
Windward/Leeward 60-40 Med/High719.00.8344
Windward/Leeward 60-40 High694.00.8645
5-Band AP Low915.00.6557
5-Band AP Low/Med727.60.8247
5-Band AP Medium639.90.9377
5-Band AP Med/High593.81.0105
5-Band AP High569.91.0528
5-Band SF Bay Tour - Low1061.80.5651
5-Band SF Bay Tour - Low/Med868.40.6909
5-Band SF Bay Tour - Medium746.40.8038
5-Band SF Bay Tour - Med/High684.50.8765
5-Band SF Bay Tour - High657.10.9130
Chicago-Mac Upwind0.7993
Chicago-Mac All Purpose0.8213
Chicago-Mac Downwind0.8389
Bayview-Mac Cove Island0.6087
Bayview-Mac Shore0.6131
Harvest Moon Regatta576.01.0418
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance706.90.8487
Triple Number Coastal/Long Distance Low828.40.7243
Triple Number Coastal/Long Distance Medium648.00.9259
Triple Number Coastal/Long Distance High587.11.0220
Triple Number Windward/Leeward Low1055.20.5686
Triple Number Windward/Leeward Medium782.20.7671
Triple Number Windward/Leeward High688.70.8712
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1725.81164.6891.0747.8669.2629.4598.4547.1529.5
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance706.90.8487
Triple Number Coastal/Long Distance Low828.40.7243
Triple Number Coastal/Long Distance Medium648.00.9259
Triple Number Coastal/Long Distance High587.11.0220
Triple Number Windward/Leeward Low1055.20.5686
Triple Number Windward/Leeward Medium782.20.7671
Triple Number Windward/Leeward High688.70.8712
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1725.81164.6891.0747.8669.2629.4598.4547.1529.5
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance706.9
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1725.81164.6891.0747.8669.2629.4598.4547.1529.5
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low828.40.7243
Triple Number Coastal/Long Distance Medium648.00.9259
Triple Number Coastal/Long Distance High587.11.0220
Triple Number Windward/Leeward Low1055.20.5686
Triple Number Windward/Leeward Medium782.20.7671
Triple Number Windward/Leeward High688.70.8712
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating706.90.8487
FinRating, kevyt tuuli1207.00.8285
FinRating, kova tuuli573.60.8717
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low828.40.7243
Triple Number Coastal/Long Distance Medium648.00.9259
Triple Number Coastal/Long Distance High587.11.0220
Triple Number Windward/Leeward Low1055.20.5686
Triple Number Windward/Leeward Medium782.20.7671
Triple Number Windward/Leeward High688.70.8712
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8487
Triple Number Coastal/Long Distance Low0.7243
Triple Number Coastal/Long Distance Medium0.9259
Triple Number Coastal/Long Distance High1.0220
Triple Number Windward/Leeward Low0.5686
Triple Number Windward/Leeward Medium0.7671
Triple Number Windward/Leeward High0.8712
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1725.81164.6891.0747.8669.2629.4598.4547.1529.5
For information
General Purpose Handicap (GPH)730.1
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance706.90.8487
Triple Number Coastal/Long Distance Low828.40.7243
Triple Number Coastal/Long Distance Medium648.00.9259
Triple Number Coastal/Long Distance High587.11.0220
Triple Number Windward/Leeward Low1055.20.5686
Triple Number Windward/Leeward Medium782.20.7671
Triple Number Windward/Leeward High688.70.8712
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1725.81164.6891.0747.8669.2629.4598.4547.1529.5
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low828.40.7243
Triple Number Coastal/Long Distance Medium648.00.9259
Triple Number Coastal/Long Distance High587.11.0220
Triple Number Windward/Leeward Low1055.20.5686
Triple Number Windward/Leeward Medium782.20.7671
Triple Number Windward/Leeward High688.70.8712
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance706.90.8487
Triple Number Coastal/Long Distance Low828.40.7243
Triple Number Coastal/Long Distance Medium648.00.9259
Triple Number Coastal/Long Distance High587.11.0220
Triple Number Windward/Leeward Low1055.20.5686
Triple Number Windward/Leeward Medium782.20.7671
Triple Number Windward/Leeward High688.70.8712
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1725.81164.6891.0747.8669.2629.4598.4547.1529.5
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance706.90.8487
Triple Number Coastal/Long Distance Low828.40.7243
Triple Number Coastal/Long Distance Medium648.00.9259
Triple Number Coastal/Long Distance High587.11.0220
Triple Number Windward/Leeward Low1055.20.5686
Triple Number Windward/Leeward Medium782.20.7671
Triple Number Windward/Leeward High688.70.8712
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1725.81164.6891.0747.8669.2629.4598.4547.1529.5
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low828.4
Triple Number Coastal/Long Distance Medium648.0
Triple Number Coastal/Long Distance High587.1
Triple Number Windward/Leeward Low1055.2
Triple Number Windward/Leeward Medium782.2
Triple Number Windward/Leeward High688.7
Predominantly Upwind702.9
Predominantly Downwind662.3
Predominantly Reaching639.3
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance706.90.8487
Triple Number Coastal/Long Distance Low828.40.7243
Triple Number Coastal/Long Distance Medium648.00.9259
Triple Number Coastal/Long Distance High587.11.0220
Triple Number Windward/Leeward Low1055.20.5686
Triple Number Windward/Leeward Medium782.20.7671
Triple Number Windward/Leeward High688.70.8712
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1725.81164.6891.0747.8669.2629.4598.4547.1529.5
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7243
Triple Number Coastal/Long Distance Medium0.9259
Triple Number Coastal/Long Distance High1.0220
Triple Number Windward/Leeward Low0.5686
Triple Number Windward/Leeward Medium0.7671
Triple Number Windward/Leeward High0.8712
Coastal/Long Distance0.8487
Predominantly Upwind0.8536
Predominantly Downwind0.9059
For information
General Purpose Handicap (GPH)730.1
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.9193
Distanseseilas Trippeltall svak vind0.7243
Distanseseilas Trippeltall mellomvind0.9259
Distanseseilas Trippeltall sterk vind1.0220
Pølsebane Trippeltall svak vind0.5686
Pølsebane Trippeltall mellomvind0.7671
Pølsebane Trippeltall sterk vind0.8712
Motvind Singeltall0.8536
Medvind Singeltall0.9059
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low828.40.7243
Triple Number Coastal/Long Distance Medium648.00.9259
Triple Number Coastal/Long Distance High587.11.0220
Triple Number Windward/Leeward Low1055.20.5686
Triple Number Windward/Leeward Medium782.20.7671
Triple Number Windward/Leeward High688.70.8712
Coastal/Long Distance706.90.8487
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind702.90.8536
Predominantly Downwind662.30.9059
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore655.00.9161
Cape Doctor Coastal557.11.0770
Triple Number Coastal/Long Distance Low828.40.7243
Triple Number Coastal/Long Distance Medium648.00.9259
Triple Number Coastal/Long Distance High587.11.0220
Triple Number Windward/Leeward Low1055.20.5686
Triple Number Windward/Leeward Medium782.20.7671
Triple Number Windward/Leeward High688.70.8712
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7243
Triple Number Coastal/Long Distance Medium0.9259
Triple Number Coastal/Long Distance High1.0220
Triple Number Windward/Leeward Low0.5686
Triple Number Windward/Leeward Medium0.7671
Triple Number Windward/Leeward High0.8712
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7243
Triple Number Coastal/Long Distance Medium0.9259
Triple Number Coastal/Long Distance High1.0220
Triple Number Windward/Leeward Low0.5686
Triple Number Windward/Leeward Medium0.7671
Triple Number Windward/Leeward High0.8712
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance706.90.8487
Triple Number Coastal/Long Distance Low828.40.7243
Triple Number Coastal/Long Distance Medium648.00.9259
Triple Number Coastal/Long Distance High587.11.0220
Triple Number Windward/Leeward Low1055.20.5686
Triple Number Windward/Leeward Medium782.20.7671
Triple Number Windward/Leeward High688.70.8712
Predominantly Upwind702.90.8536
Predominantly Downwind662.30.9059
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1725.81164.6891.0747.8669.2629.4598.4547.1529.5
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance706.90.8487
Triple Number Coastal/Long Distance Low828.40.7243
Triple Number Coastal/Long Distance Medium648.00.9259
Triple Number Coastal/Long Distance High587.11.0220
Triple Number Windward/Leeward Low1055.20.5686
Triple Number Windward/Leeward Medium782.20.7671
Triple Number Windward/Leeward High688.70.8712
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1725.81164.6891.0747.8669.2629.4598.4547.1529.5
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low828.40.7243
Triple Number AP Medium648.10.9258
Triple Number AP High587.11.0220
Triple Number Windward/Leeward Low1100.50.5452
Triple Number Windward/Leeward Medium782.20.7671
Triple Number Windward/Leeward High688.70.8712
Single Number Predominant Upwind729.60.8224
Single Number Predominant Reaching653.40.9182
Single Number Predominant Downwind691.10.8682
Predominant Upwind - Low987.60.6075
Predominant Upwind - Low/Med764.90.7844
Predominant Upwind - Medium681.40.8806
Predominant Upwind - Med/High642.30.9341
Predominant Upwind - High625.60.9591
Predominant Downwind Low1000.80.5995
Predominant Downwind Low/Med745.50.8049
Predominant Downwind Medium639.30.9386
Predominant Downwind Med/High577.01.0399
Predominant Downwind High540.81.1095
Predominant Reaching Low891.20.6733
Predominant Reaching Low/Med689.60.8701
Predominant Reaching Medium612.50.9796
Predominant Reaching Med/High569.41.0538
Predominant Reaching High543.21.1047
SA/DSPL Upwind21.68SA/DSPL Downwind33.55
Scoring OptionTODTOT
5-Band Windward/Leeward Low1227.00.4890
5-Band Windward/Leeward Low/Med905.20.6628
5-Band Windward/Leeward Medium768.70.7805
5-Band Windward/Leeward Med/High697.40.8604
5-Band Windward/Leeward High668.10.8980
Windward/Leeward 60-40 Low1229.50.4880
Windward/Leeward 60-40 Low/Med915.00.6557
Windward/Leeward 60-40 Medium784.30.7650
Windward/Leeward 60-40 Med/High719.00.8344
Windward/Leeward 60-40 High694.00.8645
5-Band AP Low915.00.6557
5-Band AP Low/Med727.60.8247
5-Band AP Medium639.90.9377
5-Band AP Med/High593.81.0105
5-Band AP High569.91.0528
5-Band SF Bay Tour - Low1061.80.5651
5-Band SF Bay Tour - Low/Med868.40.6909
5-Band SF Bay Tour - Medium746.40.8038
5-Band SF Bay Tour - Med/High684.50.8765
5-Band SF Bay Tour - High657.10.9130
Chicago-Mac Upwind0.7993
Chicago-Mac All Purpose0.8213
Chicago-Mac Downwind0.8389
Bayview-Mac Cove Island0.6087
Bayview-Mac Shore0.6131
Harvest Moon Regatta576.01.0418
ORC Ref  038800040VTIssued on 22/09/2025Valid until 31/12/2025
VPP ver: 2025 1.01 | © ORC | www.orc.org
Club Certificate2025
TONGAIRL415
ORC
Central Rating Office
Issuing certificates for
Ireland
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassSHIPMAN 28Measurement22/09/2025HINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA8.860Max. Beam2.570Draft1.515Displacement2,800Wetted area15.36IMS L6.947LSM06.566Acc. length8.352Sink (kg/mm) 9.96
VCGD-0.155VCGM-0.139RM Rated (kg·m) 39.2Limit of positive stability(°) N/AStability IndexN/ADefault crew weight378Declared crew weight510
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRDPBW
PSDPHDPHL
PSAESL
ST1ST2ST3
ST4ST5
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders1Rotating mastNo
P9.290IG10.400ISP10.400MDT10.100MDL10.100MDT2MDL2TLMWGO
E3.300J3.280BAS1.370FSDSFJ0.000SPL3.390WPLTPSBDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date10/04/2014
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  038800040VTIssued on 22/09/2025Valid until 31/12/2025
VPP ver: 2025 1.01 | © ORC | www.orc.org
Club Certificate2025
TONGAIRL415
ORC
Central Rating Office
Issuing certificates for
Ireland
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.120.561.021.8317.09
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment10.541.062.224.9310.96NoNo 26.12
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment110.5810.5810.585.625.7549.78
ORC Ref  038800040VTIssued on 22/09/2025Valid until 31/12/2025
VPP ver: 2025 1.01 | © ORC | www.orc.org