ABCDEFGHIJKLMNOPQRSTUVWXYZAAABACADAEAFAGAHAIAJAKALAMANAOAPAQARASATAUAVAWAXAYAZBABBBCBDBEBFBGBHBIBJBKBLBMBNBOBWCECFCGCHCICJCKCLCMCNCOCPCQCRCSCTCUCVCWCXCYCZDADBDCDDDEDFDGDHDIDJ
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OMR Rating System
Version 10 (March 2026)
User Agreement: By using this spreadsheet or the data contained therein in any manner, the user agrees with the following terms and conditions: Copyright: ©This spreadsheet and the OMR rating system was developed by club officers of MYCQ (inc) and copyright is claimed by MYCQ (inc). The user acknowledges this copyright. Acknowledgement: The user agrees to acknowledge MYCQ (inc) for its role in developing this spreadsheet and the OMR rating system whenever the user reports or publishes any of the contents or race results or vessel ratings based in whole or in part on data from this spreadsheet or copies thereof.
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Basic InformationLengthWeightDrag / Lift Modifying FactorsMainsailMizzen / Second MainLargest Headsail On ForestayStaysail
(Unhide
Columns
Drifter
If
Needed)
Largest SpinnakerLargest ScreacherLargest Upwind Screacher - Only if Different to Largest ScreacherEfficiencies / Rated Areas of Sails
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EventBoat NameDesignOwner NameOMR
Rating
OMR Valid?Configuration AllowableLast Weighing DateLatest UpdateMeasurerRating OfficerComment (Updates Made, Items to Check etc)Boat TypeSub TypeBOA Beam
Overall
LOA (Main Hull)LOAA (Ama)HCEFOCAOCRL
Rated length
RF
Length Factor
WMWP Weight PenaltyWEWCD Crew Weight DeclaredNC Number of Crew DeclaredTCW Total Crew WeightCWA Crew Weight AllowanceWSRWDB/CB/FinFoilsRudder FoilsPropellersCanting RigWindage FactorDLF Drag/Lift
Factor
ML1ML2LPMHBRDMPPREERMCBATTSail
ID#
VLMMAMAM Area
Main
RSAMz
Mizzen
RSA2M
Main #2
LLLPGFGFRGLG1LG2HG
Head
Board
LRG
Leech
Round
LLRG
Luff
Round
Sail
ID#
AG Area GenoaAS Area StaysailAD Area DrifterSFSL1SL2SMGPCSMG SMG %Sail ColourMSASp Area
Spin
SCRFSCRL1SCRL2SCRMGPSCR ScrMG %MSASC Area ScreacherClassed as an Upwind Screacher?ELSC Utility of Largest ScreacherUSCRFUSCRL1USCRL2
USCRMG
PUSCR ScrMG %EUSC Utility of Upwind ScreacherMSAUSC Area Upwind ScreacherEFM
Main
Effic'y
RSAM
Main
EFG
Genoa
Effic'y
RSAG
Genoa
ZVAL
Effic
Off Wind Saill Effic'yEFS
Stays'l
Effic'y
RSASt
Stays'l
EFD
Drifter
Effic'y
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SEA OMR
Fetz MaCorsair Pulse 600Gerhard Pils0.814WP AppliedMain-Genoa-Spinnaker
Andrew McDermott
Measure & Weigh reqTri6.050.156.05 0.285 499-75136136136424560DaggerboardsNoneNoneOut of WaterNone1.00009.078.862.551.040.238.930.042.600.44Full8.931.4717.868.151.912.080.097.51-0.070.027.670.000.004.319.577.474.4110231.170.00No000.001.0019.331.007.671.001.00 0.000.000.00
6
SEA OMR
MambaFirefly 850 ODDan Fidock0.924YesMain-Genoa-Spinnaker23-Nov-21Mark PescottMark PescottWeigh req after rebuildCat8.540.210.048.50 0.295 99302462462469931239DaggerboardsNoneNoneOut of WaterNone1.000011.9911.733.731.120.5212.100.183.780.030.44FullFF 55612.132.0034.619.822.422.610.059.139.090.13-0.070.0212.270.000.007.8412.4211.666.688569.350.00No000.001.0036.611.0012.271.001.00 0.000.000.00
7
SEA OMR
PandoraFirefly 850 ODDanny Moore0.926YesMain-Genoa-Spinnaker23-Nov-21Mark PescottMark PescottEx VoodooCat8.540.210.048.50 0.295 98802452452459881233DaggerboardsNoneNoneOut of WaterNone1.000011.9511.673.751.100.5212.050.163.780.020.44FullFF77712.071.9934.319.782.402.600.049.119.980.13-0.060.00012.000.000.007.2212.8011.407.079871.590.00No000.001.0036.291.0012.001.001.00 0.000.000.00
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SEA OMR
BluenoseFirefly 850 ODGeorge Eddings0.917YesMain-Genoa-Spinnaker23-Nov-21Mark PescottMark PescottJib, A2 and A5 spin 30 Jan 25Cat8.540.210.048.50 0.295 1014025125125110141265DaggerboardsNoneNoneOut of WaterNone1.000011.9811.743.721.120.5512.010.143.790.030.44FullFF95912.041.9834.409.822.352.530.059.149.100.13-0.050.0112.000.000.007.2612.8611.186.949670.160.00No000.001.0036.381.0012.001.001.00 0.000.000.00
9
SEA OMR
Twin SharksFirefly 850 ODJohn Newnham0.925YesMain-Genoa-Screacher (Upwind)-Spinnaker20-Jun-23Mark PescottMark Pescottnew Jib & Spin 5/3/25Cat8.540.210.048.50 0.295 1022025325325310221275DaggerboardsNoneNoneOut of WaterNone1.000011.9711.773.760.990.5412.140.233.780.020.44FullFF29812.162.0034.529.832.352.540.069.169.12-0.120.140.0612.340.000.007.0813.2611.496.849771.034.7412.1611.122.4651.9028.29Yes3000.001.0036.521.0012.341.001.00 0.000.000.00
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SEA OMR
The StingCorsair 750 Sprint0.851WP AppliedMain-Genoa-Screacher (Upwind)-SpinnakerMark PescottMark Pescottreweigh reqTri7.380.180.177.21 0.291 926-1392362362367871023DaggerboardsNoneNoneOut of WaterNone1.000010.2110.053.050.870.579.880.113.230.000.48FullTHA 119.881.7824.518.852.522.780.108.100.10-0.0211.750.000.006.5311.179.526.399855.336.048.788.283.0850.9926.10Yes4300.001.0026.291.0011.751.001.00 0.000.000.00
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SEA OMR
TridentCorsair 28RAndrew McDermott0.765YesMain-Genoa-Screacher (Upwind)-Spinnaker24-Oct-22Mark PescottMark Pescott
Fridge -15.5kg/Doyle sails +4kg/Cushions -24kg/Solar panel +7.5kg
Tri6.18.560.210.02 8.54 0.295 1665041041041016652075DaggerboardsNoneNoneOut of WaterNone1.000010.7010.673.420.120.8710.360.133.560.010.45Full22810.371.7525.989.123.143.471.065.29-0.04-0.1016.040.000.008.3612.1211.047.068470.646.5110.338.983.2950.5431.65Yes4900.001.0027.731.0016.041.001.00 0.000.000.00
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SEA OMR
Blue PulseCorsair Pulse 600John Coffin0.817WP AppliedMain-Genoa-Spinnaker29-Nov-13Mark PescottMark Pescottreweigh reqTri6.050.150.006.05 0.285 499-75136136136424560DaggerboardsNoneNoneOut of WaterNone1.00009.078.862.551.040.238.930.042.600.000.44Full8.931.4717.868.151.912.080.097.510.000.00-0.070.027.670.000.004.319.577.974.4110232.080.00No000.001.0019.331.007.671.001.00 0.000.000.00
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SEA OMR
Twister 2Stealth 12.1Glywn Rowlands0.867YesMain-Genoa-Screacher (Upwind)-Spinnaker28-Oct-22Mark PescottMark Pescott14/01/24 New Main & Jib DoyleCat12.10.3012.10 0.300 3546036936936935463915DaggerboardsNoneNoneOut of WaterNone1.000014.8514.634.481.800.4214.610.024.480.010.61Full1214.623.3450.9113.783.914.210.2312.8612.840.06-0.320.05025.710.000.008.6917.2814.297.8190105.057.4415.2012.993.8151.2153.28Yes4000.001.0054.251.0025.711.001.00 0.000.000.00
14
SEA OMR
BoreasStealth 11.8John Hearne0.876YesMain-Genoa-Screacher (Upwind)-Spinnaker08-Feb-26Mark PescottMark Pescott 27/12/24 Heavy air jib 17kgCat611.810.3011.81 0.300 3210037137137132103581DaggerboardsNoneNoneOut of WaterNone1.000014.7714.494.501.780.2814.660.154.550.040.61Full0514.703.3550.6313.683.964.190.2212.7612.770.07-0.13-0.06026.460.000.008.6016.9014.277.5888101.097.2715.4012.843.8552.9653.35Yes1500.001.0053.981.0026.461.001.00 0.000.000.00
15
SEA OMR
FugaziGrainger 10mDan Fidock1.086YesMain-Genoa-Screacher (Upwind)-Spinnaker24-Oct-22Mark PescottMark PescottCat9.950.259.95 0.298 1207022922922912071436DaggerboardsNoneYesOut of WaterNone1.004015.1815.003.812.070.1115.140.113.850.020.60FullV215.163.4146.8711.603.433.590.1111.1511.130.110.12-0.09020.960.000.008.2516.8014.836.247687.546.6315.7913.723.3250.0848.96Yes5600.001.0050.271.0020.961.001.00 0.000.000.00
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SEA OMR
No FearVLVP YG25 MODDirk Weiblen1.020YesMain-Genoa-Spinnaker26-Nov-19Mark PescottMark Pescott
reweigh req. 20kg added to inventory 08/07/24 New Jib
Cat8.90.228.90 0.296 85601981981988561054DaggerboardsNoneYesOut of WaterNone1.004013.5213.253.771.650.2313.510.123.820.080.49FullYG 2513.592.4839.9210.722.432.530.0610.3810.370.060.06-0.05BFC5513.490.000.007.5212.9411.175.887862.360.00No000.001.0042.401.0013.491.001.00 0.000.000.00
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SEA OMR
Cedar SwanFarrier F9-AKhun Redab0.815WP AppliedMain-Genoa-Spinnaker29-Nov-13Mark PescottMark Pescottreweigh reqTri9.50.240.12 9.38 0.297 2302-34541641641619572373DaggerboardsNoneNoneOut of WaterNone1.000011.7111.234.081.510.2711.170.104.240.040.00Full11.210.0035.5810.584.525.020.289.570.000.00-0.110.0024.140.000.008.7613.1510.957.228275.590.00No000.001.0035.581.0024.141.001.00 0.000.000.00
18
SEA OMR
AllegroStealth 13Bob McInture0.892WP AppliedMain-Genoa-Spinnaker11-Nov-15Mick ColemannMark Pescottreweigh reqCat13.010.3313.01 0.300 4022-60334234234234193761DaggerboardsNoneNoneOut of WaterNone1.000015.4815.134.821.220.4215.390.184.890.050.00Full15.440.0052.9315.014.154.480.1313.910.000.00-0.240.00T129.330.000.008.7117.4414.767.8390107.410.00No000.001.0052.931.0029.331.001.00 0.000.000.00
19
SEA OMR
ParabellumExtreme 40Dan Fidock1.283YesMain-Genoa-Screacher16-Jun-22Mark PescottMark PescottCat11.90.3011.90 0.300 1515017017017015151685DaggerboardsNoneNoneOut of WaterNone1.000017.6617.374.942.020.2717.590.165.00-0.040.77FullX4017.555.0866.2813.033.363.510.1012.4812.470.28-0.030.00023.620.000.000.0011.1018.1215.906.4958.47105.07No000.001.0071.361.0023.621.001.79 0.000.000.00
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SEA OMR
BonzaPHI 11001.107YesMain-Genoa-Screacher (Upwind)-Spinnaker20-Jun-23Mark PescottMark PescottTri11.230.2811.23 0.300 1828025425425418282082DaggerboardsNoneYesOut of WaterNone1.004016.7116.524.001.640.3416.550.064.060.041.10Full161816.596.8351.5913.724.134.130.0013.2613.250.320.160.00J131.850.000.008.6618.7416.867.3985113.397.2615.9514.503.6350.0055.27Yes5700.001.0058.421.0031.851.001.19 0.000.000.00
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SEA OMR
Surf PatrolFirefly 850 ODRay Waldron0.918YesMain-Genoa-Spinnaker17-Nov-19Mark PescottMark PescottCat8.540.210.048.50 0.295 1020025325325310201273DaggerboardsNoneNoneOut of WaterNone1.000012.2711.983.771.130.3812.160.133.820.010.44Full12.172.0134.139.772.372.540.059.179.130.13-0.03-0.04011.820.000.007.4213.1011.207.189773.180.00No000.001.0036.141.0011.821.001.00 0.000.000.00
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SEA OMR
ZeroStealth 13John Spencer0.897YesMain-Genoa-Screacher (Upwind)-Spinnaker09-Nov-16Mark PescottMark PescottCat13.010.3313.01 0.300 3508035135135135083859DaggerboardsNoneNoneOut of WaterNone1.000015.4215.104.681.660.2615.160.144.770.000.00Full1115.160.0052.8714.543.954.280.1313.360.000.000.06-0.0728.940.000.008.6416.2615.008.0093105.877.7616.2613.953.9651.0359.41Yes4200.001.0052.871.0028.941.001.00 0.000.000.00
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SEA OMR
The FrogFirefly 850 OD0.925YesMain-Genoa-Spinnaker17-Nov-18Mark PescottMark PescottWeigh reqCat8.540.210.048.50 0.295 1000024824824810001248DaggerboardsNoneNoneOut of WaterNone1.000011.9511.723.690.990.5912.100.193.690.050.44Full12.152.0034.1710.032.342.590.069.229.220.25-0.10-0.06S03411.980.000.007.1713.1711.307.2010073.350.00No000.001.0036.161.0011.981.001.00 0.000.000.00
24
SEA OMR
ZephyrusStealth X Series 43James Baxter0.871YesMain-Genoa-Screacher-Spinnaker12-Dec-23Ket
Andrew McDermott
£1 Asym 30 Jan 25Cat13.10.3313.10 0.300 2799028028028027993079Fin KeelsNoneNoneOut of WaterNone0.995013.8513.743.471.430.2613.930.103.500.05Full2713.980.0037.2413.483.654.280.1511.7711.750.05-0.130.0524.730.000.008.4016.4014.927.6090101.276.6614.7413.623.6054.0549.77No000.001.0037.241.0024.731.001.00 0.000.000.00
25
SEA OMR
0.000WP Applied0.000.00 0.000 00000NoneNone0.00000.000.000.000.000.000.000.000.00No000.000.000.000.000.000.00#DIV/0!0.000.000.00
26
SEA OMR
PoorichatLeopard 40Sunsail0.629YesMain-Genoa-Spinnaker20-Nov-23MeasurerMark PescottPerformance onlyCat6.7120.3012.00 0.300 93400100910091009934010349Fin KeelsNoneNone2xFixedNone0.957713.7212.884.841.991.1313.590.094.980.060.62Full13.653.1657.4617.085.516.250.1015.08-0.5042.490.000.008.5515.0512.258.389895.710.00No000.001.0060.621.0042.491.001.00 0.000.000.00
27
SEA OMR
MojoFusion 40Rick Fielding0.747YesMain-Genoa-Spinnaker20-Nov-23MeasurerMark PescottPerformance onlyCat7.212.20.3112.20 0.300 5070050750750750705577Fin KeelsNoneNone2xFixedNone0.957717.3516.834.851.920.7317.140.084.95Full505017.140.0067.7413.203.824.080.1012.400.10-0.2424.210.000.007.5015.6814.526.288482.090.00No000.001.0067.741.0024.211.001.00 0.000.000.00
28
SEA OMR
TroppoLagoon 410Bo Wharton0.675YesMain-Genoa-Spinnaker18-Dec-23MeasurerMark PescottPerformance onlyCat812.370.310.7011.67 0.300 7240087787787772408117Fin KeelsNoneNone2xFixedNone0.957713.5012.884.841.991.1313.000.094.980.060.62Full13.063.0256.6816.805.106.250.1014.00-0.5038.630.000.008.7117.4414.767.8390107.410.00No000.001.0059.701.0038.631.001.00 0.000.000.00
29
SEA OMR
North StarLightwave 38Rob Azzopardi0.720YesMain-Genoa-Spinnaker29-Dec-23Measurer
Andrew McDermott
Performance onlyCat6.711.30.2811.30 0.300 5000068068068050005680DaggerboardsNoneNone2xFeather/FoldNone0.990015.1815.003.812.070.1115.140.113.850.020.00Full15.160.0046.8714.543.954.280.1313.360.000.000.06-0.0728.940.000.008.6416.2615.008.0093105.870.00No000.001.0046.871.0028.941.001.00 0.000.000.00
30
SEA OMR
SerendipityWhitehaven 11Jeff Harris0.797YesMain-Genoa-Screacher (Upwind)-Spinnaker11-Sep-24
Andrew McDermott
Performance onlyCat11.010.280.0810.93 0.299 3140047447447431403614DaggerboardsNoneNoneOut of WaterNone1.000012.5212.704.300.191.2712.620.244.42Full88812.620.0040.7512.423.744.100.1111.20-0.24-0.0621.260.000.007.8814.2014.209.00114103.857.0014.0212.353.7052.8647.91Yes1600.001.0040.751.0021.261.001.00 0.000.000.00
31
SEA OMR
WowStealth 14GTDavid Liddell0.849YesMain-Genoa-Screacher-Spinnaker13-Dec-24James Haste
Andrew McDermott
Cat713.80.3513.80 0.300 5282052852852852825810DaggerboardsNoneNoneOut of WaterNone1.000017.1016.645.231.880.1916.800.205.350.00FullGBR 789M16.800.0065.0916.024.174.480.1515.0014.990.04-0.050.00SO 3833.640.000.008.9019.2616.808.4094127.717.4217.2315.454.0754.8564.54No000.001.0065.091.0033.641.001.00 0.000.000.00
32
SEA OMR
HarukiStealth 13.2Douglas Jackson0.879YesMain-Genoa-Spinnaker13-Dec-24James Haste
Andrew McDermott
Cat613.20.3313.20 0.300 4060040640640640604466DaggerboardsNoneNoneOut of WaterNone1.000015.8615.904.891.650.4115.860.115.020.00Full15.860.0057.2814.884.334.680.1813.8013.780.05-0.10-0.02131.990.000.009.8217.9115.468.3585120.190.00No000.001.0057.281.0031.991.001.00 0.000.000.00
33
SEA OMR
About Time TooBalance 451John Russel0.712YesMain-Genoa-Spinnaker08-Jan-24Measurer
Andrew McDermott
Performance onlyCat7.1113.60.3413.60 0.300 8391083983983983919230DaggerboardsNoneNone2xFeather/FoldNone0.990017.3516.834.851.920.7317.140.084.95Full17.140.0067.7413.203.824.080.1012.4025.480.000.008.9019.2616.808.4094127.710.00No000.001.0067.741.0025.481.001.00 0.000.000.00
34
SEA OMR
Sea Mi AmoreCatana 47 OceanGrant Richardson0.700YesMain-Genoa-Screacher-Spinnaker26-Jan-24Measurer
Andrew McDermott
Performance onlyCat7.6414.040.3514.04 0.300 1090201090109010901090211992DaggerboardsNoneNone2xFixedNone0.962517.4617.386.720.170.8517.450.186.880.110.00Full17.560.0072.4715.967.038.140.2313.8913.89-0.21-0.50-0.0550.770.000.009.8518.3616.0510.29104146.279.8017.8515.357.0071.43104.58No000.001.0072.471.0050.771.001.00 0.000.000.00
35
SEA OMR
SwiftCNAM 129Colin Wright0.692YesMain-Genoa-Screacher24-Feb-24Measurer
Andrew McDermott
Performance onlyCat14.20.3614.20 0.300 8500085085085085009350DaggerboardsNoneNone2xFixedNone0.962517.3516.834.851.920.7317.140.084.95Full17.140.0067.7413.203.824.080.1012.40S01725.480.000.000.009.8017.8515.357.0071.43104.58No000.001.0067.741.0025.481.001.00 0.000.000.00
36
SEA OMR
Miss VisayanCorsair 28Gary Curtis0.771YesMain-Genoa-Screacher (Upwind)-Spinnaker11-Sep-24
Andrew McDermott
Performance onlyCat6.18.560.210.02 8.54 0.295 1697041841841816972115DaggerboardsNoneNoneOut of WaterNone1.000011.1410.913.461.160.2810.720.043.630.070.45Full10.791.8128.159.143.323.640.178.348.320.040.03-0.0315.710.000.008.0512.3011.207.078871.156.5110.338.983.2950.5431.65Yes4900.001.0029.961.0015.711.001.00 0.000.000.00
37
SEA OMR
Bliss 2Stealth 13.2SMark Thornburrow0.898YesMain-Genoa-Screacher (Upwind)-Spinnaker01-Nov-24James Haste
Andrew McDermott
Cat6.713.250.3313.25 0.300 3593035935935935933952DaggerboardsNoneNoneOut of WaterNone1.000015.6215.294.831.770.2515.450.124.930.000.00FullHKG 270715.450.0055.1514.554.184.500.1913.6013.590.04-0.11-0.0629.680.000.009.5017.7415.208.2086116.115.1415.6214.342.7252.9240.00Yes1500.001.0055.151.0029.681.001.00 0.000.000.00
38
SEA OMR
Compass RoseSeawind 1160John Coffin0.687YesMain-Genoa-Screacher (Upwind)-Spinnaker01-Nov-24Measurer
Andrew McDermott
Performance onlyCat6.5311.60.2911.60 0.300 7000086886886870007868Fin KeelsNoneNone2xFixedNone0.957714.9014.555.602.000.2214.250.235.700.100.00Full14.350.0061.2713.425.706.250.0611.90-0.1837.080.000.009.6516.5514.007.287598.709.3514.9512.854.7150.3765.31Yes5200.001.0061.271.0037.081.001.00 0.000.000.00
39
SEA OMR
SapperSchionning 1160TBC0.746YesMain-Genoa-Screacher (Upwind)-Spinnaker01-Nov-24Measurer
Andrew McDermott
Cat711.880.3011.88 0.300 5200058758758752005787DaggerboardsNoneNoneOut of WaterNoneAccom1.000014.6014.314.511.860.3614.290.134.590.040.00Full14.330.0051.2514.203.954.260.1613.0213.010.05-0.140.0928.460.000.008.6016.9014.277.5888101.097.2715.4012.843.8552.9653.35Yes1500.001.0051.251.0028.461.001.00 0.000.000.00
40
SEA OMR
ZoeFountain Pajot Bahia0.697YesMain-Genoa-Spinnaker01-Nov-24Measurer
Andrew McDermott
Performance onlyCat7.414.050.350.05 14.00 0.300 97000970970970970010670Fin KeelsNoneNone2xFixedNone0.957717.4617.386.720.170.8517.450.186.880.110.00Full17.560.0072.4715.967.038.140.2313.8913.89-0.21-0.50-0.0550.770.000.008.7117.4414.767.8390107.410.00No000.001.0072.471.0050.771.001.00 0.000.000.00
41
SEA OMR
Quoll IICatana 40Tim Hawkins0.755YesMain-Genoa-Spinnaker02-Nov-24Measurer
Andrew McDermott
Performance onlyCat612.160.3012.16 0.300 5588056856856855886156DaggerboardsNoneNoneOut of WaterNone1.000017.3516.834.851.920.7317.140.084.95Full17.140.0067.7413.203.824.080.1012.400.10-0.2424.210.000.007.5015.6814.526.288482.090.000.000.000.000.00No000.001.0067.741.0024.211.001.00 0.000.000.00
42
SEA OMR
??Rapido 400.855YesMain-Genoa-Screacher-Spinnaker16-Feb-25Measurer
Andrew McDermott
Performance onlyTri6.712.030.3012.03 0.300 5200055555555552005755DaggerboardsNoneNone1xFeather/FoldNoneAccom0.995017.6617.374.942.020.2717.590.164.95-0.040.77Full17.555.0866.2813.724.134.130.0013.6013.550.320.160.00031.940.000.009.9019.3616.9010.60107158.0311.9019.2016.006.7056.30113.52No000.001.0071.361.0031.941.001.00 0.000.000.00
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