Club Certificate2025
LOBSTER XTUR
Turkiye
Sailing
Federation
www.tyf.org.tr/
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 Angles43.1°43.1°40.8°38.9°38.4°38.0°37.8°38.6°39.7°
Beat VMG2.813.884.715.245.515.665.765.855.80
52°4.415.906.937.557.908.078.198.328.34
60°4.706.217.197.798.148.348.478.658.70
75°4.896.427.387.988.378.698.929.239.39
90°4.676.297.428.038.418.809.189.7510.09
110°4.816.517.728.449.019.419.7510.3610.91
120°4.686.407.668.419.069.6710.1910.9911.79
135°4.055.747.148.048.689.3310.0311.6713.91
150°3.414.836.077.168.008.569.1110.3512.82
Run VMG2.954.185.266.206.957.457.908.9711.10
Gybe Angles142.8°142.8°146.5°148.3°152.0°153.4°151.9°146.7°142.9°
APH ToD:493.2CDL: 11.180APH ToT: 1.2164CertNo:
BOAT
ClassXR41DesignerX-YachtsBuilderX-YachtsAge date11/2025Series date12/2024Offset fileXR41.offData fileTUR LOBSTER X
HULL
Length Overall12.747Maximum Beam4.180Draft2.414Displacement7,463DLR4.5263IMS DivisionPerformanceDynamic Allowance0.000%Age Allowance0.033%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.475m
CREW
Maximum weight950(declared)Minimum weight808 ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail59.4960.87Headsail Luffed48.5848.58Headsail FlyingSymmetricAsymmetric189.12189.12 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail16.02Storm Jib14.70Heavy Weather Jib39.67
SAIL LIMITS
Headsails6Spinnakers5
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
LOBSTER XTUR
Turkiye
Sailing
Federation
www.tyf.org.tr/
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 VMG1283.1928.9764.9687.2653.4635.9625.4615.4620.5
52°816.0609.8519.6476.7455.6445.9439.6432.7431.5
60°765.8579.6500.4461.8442.0431.5425.1416.3413.6
75°735.8560.5487.6451.4430.0414.5403.4390.1383.5
90°771.6572.3485.0448.1428.3408.9392.1369.4356.7
110°749.0553.3466.5426.5399.5382.6369.3347.6330.1
120°768.4562.6470.2427.9397.6372.4353.1327.4305.4
135°888.0626.9504.2447.7414.8385.7359.1308.5258.9
150°1056.3745.5592.9502.8450.0420.6395.1347.7280.8
Run VMG1220.0860.8684.6580.6518.0483.4455.6401.5324.3
Selected Courses
Windward / Leeward1251.3894.9724.8633.9585.7559.7540.5508.4472.4
All purpose950.9691.1570.7510.4477.5456.9441.0415.8392.6
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward611.10.9818
All purpose493.21.2164
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low630.90.9510
Triple Number Coastal/Long Distance Medium491.11.2217
Triple Number Coastal/Long Distance High435.51.3776
Triple Number Windward/Leeward Low809.80.7409
Triple Number Windward/Leeward Medium606.90.9887
Triple Number Windward/Leeward High533.31.1251
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance536.61.1181
Triple Number Coastal/Long Distance Low630.90.9510
Triple Number Coastal/Long Distance Medium491.11.2217
Triple Number Coastal/Long Distance High435.51.3776
Triple Number Windward/Leeward Low809.80.7409
Triple Number Windward/Leeward Medium606.90.9887
Triple Number Windward/Leeward High533.31.1251
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1321.5891.5682.2573.0510.0474.3444.4396.3373.6
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8552
Downwind "popa"1.0541
70% up, 30% down "Ilhabela"0.9065
30% up, 70% down "Ilhabela-inverso"0.9853
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low630.90.9510
Triple Number Coastal/Long Distance Medium491.11.2217
Triple Number Coastal/Long Distance High435.51.3776
Triple Number Windward/Leeward Low809.80.7409
Triple Number Windward/Leeward Medium606.90.9887
Triple Number Windward/Leeward High533.31.1251
Predominantly Upwind538.01.1151
Predominantly Downwind496.71.2080
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low630.90.9510
Triple Number AP Medium491.21.2216
Triple Number AP High435.51.3776
Triple Number Windward/Leeward Low844.90.7101
Triple Number Windward/Leeward Medium606.90.9887
Triple Number Windward/Leeward High533.31.1251
Single Number Predominant Upwind558.51.0743
Single Number Predominant Reaching488.61.2280
Single Number Predominant Downwind516.41.1619
Predominant Upwind - Low765.00.7843
Predominant Upwind - Low/Med588.51.0195
Predominant Upwind - Medium522.01.1493
Predominant Upwind - Med/High486.01.2345
Predominant Upwind - High466.61.2858
Predominant Downwind Low753.40.7964
Predominant Downwind Low/Med561.11.0694
Predominant Downwind Medium480.51.2487
Predominant Downwind Med/High426.21.4078
Predominant Downwind High385.01.5586
Predominant Reaching Low679.00.8837
Predominant Reaching Low/Med521.11.1515
Predominant Reaching Medium459.11.3070
Predominant Reaching Med/High416.61.4402
Predominant Reaching High386.81.5514
SA/DSPL Upwind28.11SA/DSPL Downwind64.67
Scoring OptionTODTOT
5-Band Windward/Leeward Low941.50.6373
5-Band Windward/Leeward Low/Med697.20.8605
5-Band Windward/Leeward Medium597.21.0047
5-Band Windward/Leeward Med/High542.11.1068
5-Band Windward/Leeward High507.71.1817
Windward/Leeward 60-40 Low948.50.6326
Windward/Leeward 60-40 Low/Med706.80.8489
Windward/Leeward 60-40 Medium610.30.9831
Windward/Leeward 60-40 Med/High559.31.0728
Windward/Leeward 60-40 High529.81.1325
5-Band AP Low693.30.8655
5-Band AP Low/Med553.41.0841
5-Band AP Medium484.31.2390
5-Band AP Med/High442.51.3559
5-Band AP High416.11.4418
5-Band SF Bay Tour - Low813.90.7372
5-Band SF Bay Tour - Low/Med666.60.9001
5-Band SF Bay Tour - Medium575.11.0434
5-Band SF Bay Tour - Med/High524.11.1449
5-Band SF Bay Tour - High492.81.2176
Chicago-Mac Upwind1.0414
Chicago-Mac All Purpose1.0814
Chicago-Mac Downwind1.1180
Bayview-Mac Cove Island0.7953
Bayview-Mac Shore0.7999
Harvest Moon Regatta423.01.4184
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance536.61.1181
Triple Number Coastal/Long Distance Low630.90.9510
Triple Number Coastal/Long Distance Medium491.11.2217
Triple Number Coastal/Long Distance High435.51.3776
Triple Number Windward/Leeward Low809.80.7409
Triple Number Windward/Leeward Medium606.90.9887
Triple Number Windward/Leeward High533.31.1251
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1321.5891.5682.2573.0510.0474.3444.4396.3373.6
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance536.61.1181
Triple Number Coastal/Long Distance Low630.90.9510
Triple Number Coastal/Long Distance Medium491.11.2217
Triple Number Coastal/Long Distance High435.51.3776
Triple Number Windward/Leeward Low809.80.7409
Triple Number Windward/Leeward Medium606.90.9887
Triple Number Windward/Leeward High533.31.1251
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1321.5891.5682.2573.0510.0474.3444.4396.3373.6
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance536.6
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1321.5891.5682.2573.0510.0474.3444.4396.3373.6
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low630.90.9510
Triple Number Coastal/Long Distance Medium491.11.2217
Triple Number Coastal/Long Distance High435.51.3776
Triple Number Windward/Leeward Low809.80.7409
Triple Number Windward/Leeward Medium606.90.9887
Triple Number Windward/Leeward High533.31.1251
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating536.61.1181
FinRating, kevyt tuuli923.71.0827
FinRating, kova tuuli416.91.1993
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low630.90.9510
Triple Number Coastal/Long Distance Medium491.11.2217
Triple Number Coastal/Long Distance High435.51.3776
Triple Number Windward/Leeward Low809.80.7409
Triple Number Windward/Leeward Medium606.90.9887
Triple Number Windward/Leeward High533.31.1251
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance1.1181
Triple Number Coastal/Long Distance Low0.9510
Triple Number Coastal/Long Distance Medium1.2217
Triple Number Coastal/Long Distance High1.3776
Triple Number Windward/Leeward Low0.7409
Triple Number Windward/Leeward Medium0.9887
Triple Number Windward/Leeward High1.1251
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1321.5891.5682.2573.0510.0474.3444.4396.3373.6
For information
General Purpose Handicap (GPH)553.0
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance536.61.1181
Triple Number Coastal/Long Distance Low630.90.9510
Triple Number Coastal/Long Distance Medium491.11.2217
Triple Number Coastal/Long Distance High435.51.3776
Triple Number Windward/Leeward Low809.80.7409
Triple Number Windward/Leeward Medium606.90.9887
Triple Number Windward/Leeward High533.31.1251
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1321.5891.5682.2573.0510.0474.3444.4396.3373.6
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low630.90.9510
Triple Number Coastal/Long Distance Medium491.11.2217
Triple Number Coastal/Long Distance High435.51.3776
Triple Number Windward/Leeward Low809.80.7409
Triple Number Windward/Leeward Medium606.90.9887
Triple Number Windward/Leeward High533.31.1251
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance536.61.1181
Triple Number Coastal/Long Distance Low630.90.9510
Triple Number Coastal/Long Distance Medium491.11.2217
Triple Number Coastal/Long Distance High435.51.3776
Triple Number Windward/Leeward Low809.80.7409
Triple Number Windward/Leeward Medium606.90.9887
Triple Number Windward/Leeward High533.31.1251
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1321.5891.5682.2573.0510.0474.3444.4396.3373.6
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance536.61.1181
Triple Number Coastal/Long Distance Low630.90.9510
Triple Number Coastal/Long Distance Medium491.11.2217
Triple Number Coastal/Long Distance High435.51.3776
Triple Number Windward/Leeward Low809.80.7409
Triple Number Windward/Leeward Medium606.90.9887
Triple Number Windward/Leeward High533.31.1251
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1321.5891.5682.2573.0510.0474.3444.4396.3373.6
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low630.9
Triple Number Coastal/Long Distance Medium491.1
Triple Number Coastal/Long Distance High435.5
Triple Number Windward/Leeward Low809.8
Triple Number Windward/Leeward Medium606.9
Triple Number Windward/Leeward High533.3
Predominantly Upwind538.0
Predominantly Downwind496.7
Predominantly Reaching477.7
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance536.61.1181
Triple Number Coastal/Long Distance Low630.90.9510
Triple Number Coastal/Long Distance Medium491.11.2217
Triple Number Coastal/Long Distance High435.51.3776
Triple Number Windward/Leeward Low809.80.7409
Triple Number Windward/Leeward Medium606.90.9887
Triple Number Windward/Leeward High533.31.1251
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1321.5891.5682.2573.0510.0474.3444.4396.3373.6
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9510
Triple Number Coastal/Long Distance Medium1.2217
Triple Number Coastal/Long Distance High1.3776
Triple Number Windward/Leeward Low0.7409
Triple Number Windward/Leeward Medium0.9887
Triple Number Windward/Leeward High1.1251
Coastal/Long Distance1.1181
Predominantly Upwind1.1151
Predominantly Downwind1.2080
For information
General Purpose Handicap (GPH)553.0
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.2164
Distanseseilas Trippeltall svak vind0.9510
Distanseseilas Trippeltall mellomvind1.2217
Distanseseilas Trippeltall sterk vind1.3776
Pølsebane Trippeltall svak vind0.7409
Pølsebane Trippeltall mellomvind0.9887
Pølsebane Trippeltall sterk vind1.1251
Motvind Singeltall1.1151
Medvind Singeltall1.2080
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low630.90.9510
Triple Number Coastal/Long Distance Medium491.11.2217
Triple Number Coastal/Long Distance High435.51.3776
Triple Number Windward/Leeward Low809.80.7409
Triple Number Windward/Leeward Medium606.90.9887
Triple Number Windward/Leeward High533.31.1251
Coastal/Long Distance536.61.1181
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind538.01.1151
Predominantly Downwind496.71.2080
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore483.21.2417
Cape Doctor Coastal399.51.5017
Triple Number Coastal/Long Distance Low630.90.9510
Triple Number Coastal/Long Distance Medium491.11.2217
Triple Number Coastal/Long Distance High435.51.3776
Triple Number Windward/Leeward Low809.80.7409
Triple Number Windward/Leeward Medium606.90.9887
Triple Number Windward/Leeward High533.31.1251
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9510
Triple Number Coastal/Long Distance Medium1.2217
Triple Number Coastal/Long Distance High1.3776
Triple Number Windward/Leeward Low0.7409
Triple Number Windward/Leeward Medium0.9887
Triple Number Windward/Leeward High1.1251
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9510
Triple Number Coastal/Long Distance Medium1.2217
Triple Number Coastal/Long Distance High1.3776
Triple Number Windward/Leeward Low0.7409
Triple Number Windward/Leeward Medium0.9887
Triple Number Windward/Leeward High1.1251
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance536.61.1181
Triple Number Coastal/Long Distance Low630.90.9510
Triple Number Coastal/Long Distance Medium491.11.2217
Triple Number Coastal/Long Distance High435.51.3776
Triple Number Windward/Leeward Low809.80.7409
Triple Number Windward/Leeward Medium606.90.9887
Triple Number Windward/Leeward High533.31.1251
Predominantly Upwind538.01.1151
Predominantly Downwind496.71.2080
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1321.5891.5682.2573.0510.0474.3444.4396.3373.6
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance536.61.1181
Triple Number Coastal/Long Distance Low630.90.9510
Triple Number Coastal/Long Distance Medium491.11.2217
Triple Number Coastal/Long Distance High435.51.3776
Triple Number Windward/Leeward Low809.80.7409
Triple Number Windward/Leeward Medium606.90.9887
Triple Number Windward/Leeward High533.31.1251
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1321.5891.5682.2573.0510.0474.3444.4396.3373.6
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low630.90.9510
Triple Number AP Medium491.21.2216
Triple Number AP High435.51.3776
Triple Number Windward/Leeward Low844.90.7101
Triple Number Windward/Leeward Medium606.90.9887
Triple Number Windward/Leeward High533.31.1251
Single Number Predominant Upwind558.51.0743
Single Number Predominant Reaching488.61.2280
Single Number Predominant Downwind516.41.1619
Predominant Upwind - Low765.00.7843
Predominant Upwind - Low/Med588.51.0195
Predominant Upwind - Medium522.01.1493
Predominant Upwind - Med/High486.01.2345
Predominant Upwind - High466.61.2858
Predominant Downwind Low753.40.7964
Predominant Downwind Low/Med561.11.0694
Predominant Downwind Medium480.51.2487
Predominant Downwind Med/High426.21.4078
Predominant Downwind High385.01.5586
Predominant Reaching Low679.00.8837
Predominant Reaching Low/Med521.11.1515
Predominant Reaching Medium459.11.3070
Predominant Reaching Med/High416.61.4402
Predominant Reaching High386.81.5514
SA/DSPL Upwind28.11SA/DSPL Downwind64.67
Scoring OptionTODTOT
5-Band Windward/Leeward Low941.50.6373
5-Band Windward/Leeward Low/Med697.20.8605
5-Band Windward/Leeward Medium597.21.0047
5-Band Windward/Leeward Med/High542.11.1068
5-Band Windward/Leeward High507.71.1817
Windward/Leeward 60-40 Low948.50.6326
Windward/Leeward 60-40 Low/Med706.80.8489
Windward/Leeward 60-40 Medium610.30.9831
Windward/Leeward 60-40 Med/High559.31.0728
Windward/Leeward 60-40 High529.81.1325
5-Band AP Low693.30.8655
5-Band AP Low/Med553.41.0841
5-Band AP Medium484.31.2390
5-Band AP Med/High442.51.3559
5-Band AP High416.11.4418
5-Band SF Bay Tour - Low813.90.7372
5-Band SF Bay Tour - Low/Med666.60.9001
5-Band SF Bay Tour - Medium575.11.0434
5-Band SF Bay Tour - Med/High524.11.1449
5-Band SF Bay Tour - High492.81.2176
Chicago-Mac Upwind1.0414
Chicago-Mac All Purpose1.0814
Chicago-Mac Downwind1.1180
Bayview-Mac Cove Island0.7953
Bayview-Mac Shore0.7999
Harvest Moon Regatta423.01.4184
Club Certificate2025
LOBSTER XTUR
Turkiye
Sailing
Federation
www.tyf.org.tr/
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassXR41Measurement29/01/2026HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA12.747Max. Beam4.180Draft2.414Displacement7,463Wetted area35.54IMS L11.916LSM011.813Acc. length12.747Sink (kg/mm) 27.50
VCGD-0.064VCGM-0.069RM Rated (kg·m) 240.3Limit of positive stability(°) N/AStability IndexN/ADefault crew weight873Declared crew weight950
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.475PBW0.115PIPA0.0037
EDL1.675ST10.042ST20.180
ST30.180ST40.112ST50.265
RIG
Forestay tensionAftInner stayNone FittedMast materialCarbonSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0Checkstays0Spreaders2Rotating mastNo
P16.700IG16.930ISP18.510MDT10.130MDL10.254MDT20.130MDL20.180TL1.330MW0.254GO0.320
E5.480J5.355BAS1.850FSD0.038SFJ0.208SPLWPLTPS7.403BD0.255MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered240.4Flotation Date29/01/2026
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
LOBSTER XTUR
Turkiye
Sailing
Federation
www.tyf.org.tr/
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment11.221.872.603.694.6359.49
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentJ-10.090.821.532.784.065.3117.62YesNo 48.58J-20.090.811.512.764.045.3017.66YesNo 48.43J-30.130.741.382.663.975.2617.35YesNo 46.32
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentA - 221.5017.4819.4911.6811.50102%189.12A - 1,521.3017.8019.5511.2111.6396%184.00A - 320.9517.7319.3411.718.93131%179.77