Club
Certificate
2023

Boat

Thunder

CAN 34894

Portsmouth Olympic Harbour
53 Yonge Street
Kingston, Ontario
Canada K7M 6G4
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat Angles42.6°40.2°38.8°37.8°37.2°37.2°37.6°
Beat VMG3.494.204.664.905.015.085.13
52°5.266.146.636.876.997.077.14
60°5.526.366.807.037.177.257.34
75°5.696.506.937.197.377.507.67
90°5.746.657.107.347.487.647.95
110°5.716.707.197.527.818.088.47
120°5.516.557.117.487.818.158.90
135°4.926.056.807.247.597.948.77
150°4.155.246.136.737.097.377.92
Run VMG3.594.545.315.836.306.807.44
Gybe Angles143.3°147.8°148.7°150.0°172.7°176.3°177.7°

APH: 572.4

CDL: 8.647

GPH: 638.3

CertNo: ON2311

BOAT
ClassX372 (MOD)DesignerNIELS JEPPESENBuilderX YACHTSAge date07/1987Series date07/1987Offset fileIX372.OFFData fileCAN34894-Thunder
HULL
Length Overall11.031 mMaximum Beam3.590 mDraft2.031 mDisplacement5,375 kgDLR8.3388IMS DivisionCruiser/RacerDynamic Allowance0.170%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFeathering 2 bladesDiameter0.385m
CREW
Maximum weight559 kgMinimum weight419 kg * when appliedNon Manual PowerNoCrew Arm Extension0.00 m
SAIL AREAS (m²)
MeasuredRatedMainsail41.9342.72Headsail Luffed24.1124.11Headsail FlyingSymmetricAsymmetric80.3680.36 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail12.67Storm Jib8.54Heavy Weather Jib23.06
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  03430002P1HIssued on 23/06/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

Thunder

CAN 34894

Portsmouth Olympic Harbour
53 Yonge Street
Kingston, Ontario
Canada K7M 6G4
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG1032.6857.6772.7735.1718.5708.6701.3
52°683.9586.1542.9524.0514.9509.5504.1
60°652.1566.3529.7512.0502.3496.8490.5
75°633.0553.5519.4500.9488.7479.9469.7
90°626.7541.0507.4490.2481.1471.3452.9
110°630.5537.2500.7478.6460.9445.7425.1
120°653.6549.3506.4481.3460.7441.6404.4
135°732.0595.4529.8497.5474.3453.2410.3
150°867.7686.4587.0535.2507.4488.2454.3
Run VMG1001.9792.6677.8618.0571.7529.4483.8
Selected Courses
Windward / Leeward1017.3825.1725.3676.6645.1619.0592.6
All purpose783.7650.8586.9555.2535.7520.3499.3
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward701.90.8548
All purpose572.41.0483
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low717.30.8365
Triple Number Coastal/Long Distance Medium568.91.0547
Triple Number Coastal/Long Distance High516.31.1621
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium697.30.8605
Triple Number Windward/Leeward High615.60.9746
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance621.60.9652
Triple Number Coastal/Long Distance Low717.30.8365
Triple Number Coastal/Long Distance Medium568.91.0547
Triple Number Coastal/Long Distance High516.31.1621
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium697.30.8605
Triple Number Windward/Leeward High615.60.9746
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1015.7777.3657.2591.5555.9526.3478.3
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7600
Downwind "popa"0.8983
70% up, 30% down "Ilhabela"0.7968
30% up, 70% down "Ilhabela-inverso"0.8518
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low717.30.8365
Triple Number Coastal/Long Distance Medium568.91.0547
Triple Number Coastal/Long Distance High516.31.1621
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium697.30.8605
Triple Number Windward/Leeward High615.60.9746
Predominantly Upwind615.80.9744
Predominantly Downwind581.51.0318
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low717.30.8365
Triple Number All Purpose Medium568.91.0547
Triple Number All Purpose High516.31.1621
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium697.30.8605
Triple Number Windward/Leeward High615.60.9746
Predominantly Upwind615.80.9744
Predominantly Downwind581.51.0318
Predominantly Upwind Low796.60.7532
Predominantly Upwind Medium635.30.9445
Predominantly Upwind High597.31.0045
Predominantly Downwind Low784.30.7650
Predominantly Downwind Medium579.31.0358
Predominantly Downwind High494.41.2136
Chicago-Mac Upwind0.9583
Chicago-Mac All Purpose0.9842
Chicago-Mac Downwind1.0155
Bayview-Mac Cove Island0.9222
Bayview-Mac Shore0.9295
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching543.81.1033
Predominantly Reaching Low650.20.9228
Predominantly Reaching Medium538.21.1148
Predominantly Reaching High484.41.2388
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1002.50.5985
5-Band Low / Medium846.20.7090
5-Band Medium686.90.8735
5-Band Medium / High623.90.9617
5-Band High597.11.0048
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance621.60.9652
Triple Number Coastal/Long Distance Low717.30.8365
Triple Number Coastal/Long Distance Medium568.91.0547
Triple Number Coastal/Long Distance High516.31.1621
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium697.30.8605
Triple Number Windward/Leeward High615.60.9746
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1015.7777.3657.2591.5555.9526.3478.3
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance621.60.9652
Triple Number Coastal/Long Distance Low717.30.8365
Triple Number Coastal/Long Distance Medium568.91.0547
Triple Number Coastal/Long Distance High516.31.1621
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium697.30.8605
Triple Number Windward/Leeward High615.60.9746
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1015.7777.3657.2591.5555.9526.3478.3
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance621.6
Triple Number Coastal/Long Distance Low717.3
Triple Number Coastal/Long Distance Medium568.9
Triple Number Coastal/Long Distance High516.3
Triple Number Windward/Leeward Low921.2
Triple Number Windward/Leeward Medium697.3
Triple Number Windward/Leeward High615.6
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1015.7777.3657.2591.5555.9526.3478.3
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance621.60.9652
Triple Number Coastal/Long Distance Low717.30.8365
Triple Number Coastal/Long Distance Medium568.91.0547
Triple Number Coastal/Long Distance High516.31.1621
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium697.30.8605
Triple Number Windward/Leeward High615.60.9746
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1015.7777.3657.2591.5555.9526.3478.3
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)621.60.9652
Triple Number Coastal/Long Distance Low717.30.8365
Triple Number Coastal/Long Distance Medium568.91.0547
Triple Number Coastal/Long Distance High516.31.1621
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium697.30.8605
Triple Number Windward/Leeward High615.60.9746
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1015.7777.3657.2591.5555.9526.3478.3
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low717.30.8365
Triple Number Coastal/Long Distance Medium568.91.0547
Triple Number Coastal/Long Distance High516.31.1621
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium697.30.8605
Triple Number Windward/Leeward High615.60.9746
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8365
Triple Number Coastal/Long Distance Medium1.0547
Triple Number Coastal/Long Distance High1.1621
Triple Number Windward/Leeward Low0.6513
Triple Number Windward/Leeward Medium0.8605
Triple Number Windward/Leeward High0.9746
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1015.7777.3657.2591.5555.9526.3478.3
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance621.60.9652
Triple Number Coastal/Long Distance Low717.30.8365
Triple Number Coastal/Long Distance Medium568.91.0547
Triple Number Coastal/Long Distance High516.31.1621
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium697.30.8605
Triple Number Windward/Leeward High615.60.9746
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1015.7777.3657.2591.5555.9526.3478.3
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low717.30.8365
Triple Number Coastal/Long Distance Medium568.91.0547
Triple Number Coastal/Long Distance High516.31.1621
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium697.30.8605
Triple Number Windward/Leeward High615.60.9746
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance621.60.9652
Triple Number Coastal/Long Distance Low717.30.8365
Triple Number Coastal/Long Distance Medium568.91.0547
Triple Number Coastal/Long Distance High516.31.1621
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium697.30.8605
Triple Number Windward/Leeward High615.60.9746
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1015.7777.3657.2591.5555.9526.3478.3
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium697.30.8605
Triple Number Windward/Leeward High615.60.9746
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1015.7777.3657.2591.5555.9526.3478.3
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low717.3
Triple Number Coastal/Long Distance Medium568.9
Triple Number Coastal/Long Distance High516.3
Triple Number Windward/Leeward Low921.2
Triple Number Windward/Leeward Medium697.3
Triple Number Windward/Leeward High615.6
Predominantly Upwind615.8
Predominantly Downwind581.5
Predominantly Reaching556.8
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance621.60.9652
Triple Number Coastal/Long Distance Low717.30.8365
Triple Number Coastal/Long Distance Medium568.91.0547
Triple Number Coastal/Long Distance High516.31.1621
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium697.30.8605
Triple Number Windward/Leeward High615.60.9746
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1015.7777.3657.2591.5555.9526.3478.3
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8365
Triple Number Coastal/Long Distance Medium1.0547
Triple Number Coastal/Long Distance High1.1621
Triple Number Windward/Leeward Low0.6513
Triple Number Windward/Leeward Medium0.8605
Triple Number Windward/Leeward High0.9746
Coastal/Long Distance0.9652
Predominantly Upwind0.9744
Predominantly Downwind1.0318
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.8365
Tretall Distanseseilas Mellomvind1.0547
Tretall Distanseseilas Mye vind1.1621
Tretall Pølsebane Lite vind0.6513
Tretall Pølsebane Mellomvind0.8605
Tretall Pølsebane Mye vind0.9746
Distanseseilas ett tall (OSN 8-16kn)0.9652
Distanseseilas ett tall (APH 6-20kn)1.0483
Enkeltall Motvind0.9744
Enkeltall Medvind1.0318
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low717.30.8365
Triple Number Coastal/Long Distance Medium568.91.0547
Triple Number Coastal/Long Distance High516.31.1621
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium697.30.8605
Triple Number Windward/Leeward High615.60.9746
Coastal/Long Distance621.60.9652
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind615.80.9744
Predominantly Downwind581.51.0318
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore600.50.9992
Cape Doctor Coastal505.61.1866
Triple Number Coastal/Long Distance Low717.30.8365
Triple Number Coastal/Long Distance Medium568.91.0547
Triple Number Coastal/Long Distance High516.31.1621
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium697.30.8605
Triple Number Windward/Leeward High615.60.9746
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8365
Triple Number Coastal/Long Distance Medium1.0547
Triple Number Coastal/Long Distance High1.1621
Triple Number Windward/Leeward Low0.6513
Triple Number Windward/Leeward Medium0.8605
Triple Number Windward/Leeward High0.9746
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8365
Triple Number Coastal/Long Distance Medium1.0547
Triple Number Coastal/Long Distance High1.1621
Triple Number Windward/Leeward Low0.6513
Triple Number Windward/Leeward Medium0.8605
Triple Number Windward/Leeward High0.9746
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance621.60.9652
Triple Number Coastal/Long Distance Low717.30.8365
Triple Number Coastal/Long Distance Medium568.91.0547
Triple Number Coastal/Long Distance High516.31.1621
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium697.30.8605
Triple Number Windward/Leeward High615.60.9746
Predominantly Upwind615.80.9744
Predominantly Downwind581.51.0318
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1015.7777.3657.2591.5555.9526.3478.3
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance621.60.9652
Triple Number Coastal/Long Distance Low717.30.8365
Triple Number Coastal/Long Distance Medium568.91.0547
Triple Number Coastal/Long Distance High516.31.1621
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium697.30.8605
Triple Number Windward/Leeward High615.60.9746
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1015.7777.3657.2591.5555.9526.3478.3
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low717.30.8365
Triple Number All Purpose Medium568.91.0547
Triple Number All Purpose High516.31.1621
Triple Number Windward/Leeward Low921.20.6513
Triple Number Windward/Leeward Medium697.30.8605
Triple Number Windward/Leeward High615.60.9746
Predominantly Upwind615.80.9744
Predominantly Downwind581.51.0318
Predominantly Upwind Low796.60.7532
Predominantly Upwind Medium635.30.9445
Predominantly Upwind High597.31.0045
Predominantly Downwind Low784.30.7650
Predominantly Downwind Medium579.31.0358
Predominantly Downwind High494.41.2136
Chicago-Mac Upwind0.9583
Chicago-Mac All Purpose0.9842
Chicago-Mac Downwind1.0155
Bayview-Mac Cove Island0.9222
Bayview-Mac Shore0.9295
Harvest Moon Regatta503.71.1913
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy602.20.9963
San Francisco Bay Medium686.40.8742
Predominantly Reaching543.81.1033
Predominantly Reaching Low650.20.9228
Predominantly Reaching Medium538.21.1148
Predominantly Reaching High484.41.2388
Windward/Leeward 60-40 Low926.00.6480
Windward/Leeward 60-40 Medium716.50.8374
Windward/Leeward 60-40 High647.20.9271
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1002.50.5985
5-Band Low / Medium846.20.7090
5-Band Medium686.90.8735
5-Band Medium / High623.90.9617
5-Band High597.11.0048
ORC Ref  03430002P1HIssued on 23/06/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

Thunder

CAN 34894

Portsmouth Olympic Harbour
53 Yonge Street
Kingston, Ontario
Canada K7M 6G4
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassX372 (MOD)Measurement14/09/1995HINPlan reviewHull constructionCoredCarbon RudderNoLight stanchionsNoTrim tabNo
LOA11.031Max. Beam3.590Draft2.031Displacement5,375Wetted area23.80IMS L9.042LSM08.637Acc. length11.031Sink (kg/mm) 17.03
VCGD0.040VCGM0.002RM Rated (kg·m) 109.4Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeFeathering 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.385PBW0.147PIPA0.0056
PSD0.031PHD0.071PHL0.138
PSA21.0°ESL0.842
ST10.034ST20.125ST30.135
ST40.055ST50.220
RIG
Forestay tensionAftInner stayAdjustableCarbon mastNoHeadsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays2Spreaders2Rotating mastNo
P14.107IG13.067ISP13.183MDT10.104MDL10.168MDT20.085MDL20.107TL2.249MW0.168GO0.168
E5.130J3.978BAS1.863FSD0.022SFJ0.000SPLWPLTPS4.598BD0.213MWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date10/07/1995MeasurerComment
SFFP0.600FFMFF1.104LCFcl5.919SG1.0010
SAFP9.669FAMFA1.020LCFsh6.181HBI1.024
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03430002P1HIssued on 23/06/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

Thunder

CAN 34894

Portsmouth Olympic Harbour
53 Yonge Street
Kingston, Ontario
Canada K7M 6G4
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentM10.171.031.853.204.1841.9329/05/2021
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentJ10.090.490.921.892.863.7612.72YesNo 24.1129/05/2021
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentA213.8611.3112.597.587.9995%80.3629/05/2021
ORC Ref  03430002P1HIssued on 23/06/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org