Club
Certificate
2023

Boat

Muskrat

USA 93300

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat Angles41.8°39.4°37.0°36.0°35.7°35.2°35.2°
Beat VMG3.964.745.145.335.445.525.58
52°5.946.817.167.317.427.497.58
60°6.206.987.337.507.617.707.81
75°6.367.097.477.747.918.048.21
90°6.217.037.477.828.128.358.64
110°5.977.057.638.098.468.759.32
120°5.796.927.558.098.619.1310.07
135°5.206.427.207.758.328.9210.65
150°4.395.556.527.157.567.969.07
Run VMG3.804.815.646.196.557.047.86
Gybe Angles143.3°146.9°149.6°150.5°149.6°174.8°142.6°

APH: 530.8

CDL: 9.677

GPH: 590.7

CertNo: US6511

BOAT
ClassJ 105 ModDesignerJohnstoneBuilderTPIAge date01/1995Series date01/1995Offset fileUS93300.offData fileUS6511
HULL
Length Overall10.570 mMaximum Beam3.346 mDraft2.170 mDisplacement3,673 kgDLR4.5202IMS DivisionPerformanceDynamic Allowance0.000%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameter0.375m
CREW
Maximum weight630 kgMinimum weight473 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail35.5136.07Headsail Luffed41.0741.07Headsail FlyingSymmetricAsymmetric88.4588.45 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail10.46Storm Jib8.26Heavy Weather Jib22.29
SAIL LIMITS
Headsails1  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  04560002KEIIssued on 03/05/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

Muskrat

USA 93300

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG909.9758.9700.3675.6661.9652.7645.6
52°606.4528.3502.8492.2485.5480.7475.2
60°580.6515.4491.4480.3472.9467.7460.9
75°566.3507.9481.8465.1455.1447.8438.5
90°579.8512.1481.7460.1443.5431.3416.5
110°603.3510.3471.8445.1425.6411.5386.2
120°621.5520.1476.5444.8418.2394.4357.7
135°692.4561.1500.1464.4432.8403.4338.1
150°820.6648.4552.5503.4475.9452.2396.7
Run VMG947.6748.7638.0581.2549.5511.3458.1
Selected Courses
Windward / Leeward928.8753.8669.1628.4605.7582.0551.9
All purpose718.3599.5545.6517.0498.3482.2456.1
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward651.10.9215
All purpose530.81.1304
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium528.71.1348
Triple Number Coastal/Long Distance High476.51.2593
Triple Number Windward/Leeward Low841.30.7132
Triple Number Windward/Leeward Medium646.80.9277
Triple Number Windward/Leeward High576.61.0405
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance574.91.0436
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium528.71.1348
Triple Number Coastal/Long Distance High476.51.2593
Triple Number Windward/Leeward Low841.30.7132
Triple Number Windward/Leeward Medium646.80.9277
Triple Number Windward/Leeward High576.61.0405
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance930.6712.9608.7550.2516.9486.6438.0
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8392
Downwind "popa"0.9472
70% up, 30% down "Ilhabela"0.8689
30% up, 70% down "Ilhabela-inverso"0.9119
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium528.71.1348
Triple Number Coastal/Long Distance High476.51.2593
Triple Number Windward/Leeward Low841.30.7132
Triple Number Windward/Leeward Medium646.80.9277
Triple Number Windward/Leeward High576.61.0405
Predominantly Upwind568.21.0560
Predominantly Downwind542.31.1063
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low658.90.9106
Triple Number All Purpose Medium528.71.1348
Triple Number All Purpose High476.51.2593
Triple Number Windward/Leeward Low841.30.7132
Triple Number Windward/Leeward Medium646.80.9277
Triple Number Windward/Leeward High576.61.0405
Predominantly Upwind568.21.0560
Predominantly Downwind542.31.1063
Predominantly Upwind Low717.60.8361
Predominantly Upwind Medium585.41.0250
Predominantly Upwind High553.51.0839
Predominantly Downwind Low731.40.8203
Predominantly Downwind Medium544.51.1020
Predominantly Downwind High458.01.3101
Chicago-Mac Upwind1.0395
Chicago-Mac All Purpose1.0618
Chicago-Mac Downwind1.0882
Bayview-Mac Cove Island1.0011
Bayview-Mac Shore1.0124
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching505.71.1865
Predominantly Reaching Low603.10.9949
Predominantly Reaching Medium503.01.1928
Predominantly Reaching High442.51.3560
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low915.30.6555
5-Band Low / Medium775.00.7742
5-Band Medium638.00.9405
5-Band Medium / High584.91.0258
5-Band High557.11.0770
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance574.91.0436
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium528.71.1348
Triple Number Coastal/Long Distance High476.51.2593
Triple Number Windward/Leeward Low841.30.7132
Triple Number Windward/Leeward Medium646.80.9277
Triple Number Windward/Leeward High576.61.0405
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance930.6712.9608.7550.2516.9486.6438.0
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance574.91.0436
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium528.71.1348
Triple Number Coastal/Long Distance High476.51.2593
Triple Number Windward/Leeward Low841.30.7132
Triple Number Windward/Leeward Medium646.80.9277
Triple Number Windward/Leeward High576.61.0405
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance930.6712.9608.7550.2516.9486.6438.0
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance574.9
Triple Number Coastal/Long Distance Low658.9
Triple Number Coastal/Long Distance Medium528.7
Triple Number Coastal/Long Distance High476.5
Triple Number Windward/Leeward Low841.3
Triple Number Windward/Leeward Medium646.8
Triple Number Windward/Leeward High576.6
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance930.6712.9608.7550.2516.9486.6438.0
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance574.91.0436
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium528.71.1348
Triple Number Coastal/Long Distance High476.51.2593
Triple Number Windward/Leeward Low841.30.7132
Triple Number Windward/Leeward Medium646.80.9277
Triple Number Windward/Leeward High576.61.0405
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance930.6712.9608.7550.2516.9486.6438.0
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)574.91.0436
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium528.71.1348
Triple Number Coastal/Long Distance High476.51.2593
Triple Number Windward/Leeward Low841.30.7132
Triple Number Windward/Leeward Medium646.80.9277
Triple Number Windward/Leeward High576.61.0405
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance930.6712.9608.7550.2516.9486.6438.0
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium528.71.1348
Triple Number Coastal/Long Distance High476.51.2593
Triple Number Windward/Leeward Low841.30.7132
Triple Number Windward/Leeward Medium646.80.9277
Triple Number Windward/Leeward High576.61.0405
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9106
Triple Number Coastal/Long Distance Medium1.1348
Triple Number Coastal/Long Distance High1.2593
Triple Number Windward/Leeward Low0.7132
Triple Number Windward/Leeward Medium0.9277
Triple Number Windward/Leeward High1.0405
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance930.6712.9608.7550.2516.9486.6438.0
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance574.91.0436
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium528.71.1348
Triple Number Coastal/Long Distance High476.51.2593
Triple Number Windward/Leeward Low841.30.7132
Triple Number Windward/Leeward Medium646.80.9277
Triple Number Windward/Leeward High576.61.0405
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance930.6712.9608.7550.2516.9486.6438.0
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium528.71.1348
Triple Number Coastal/Long Distance High476.51.2593
Triple Number Windward/Leeward Low841.30.7132
Triple Number Windward/Leeward Medium646.80.9277
Triple Number Windward/Leeward High576.61.0405
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance574.91.0436
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium528.71.1348
Triple Number Coastal/Long Distance High476.51.2593
Triple Number Windward/Leeward Low841.30.7132
Triple Number Windward/Leeward Medium646.80.9277
Triple Number Windward/Leeward High576.61.0405
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance930.6712.9608.7550.2516.9486.6438.0
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low841.30.7132
Triple Number Windward/Leeward Medium646.80.9277
Triple Number Windward/Leeward High576.61.0405
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance930.6712.9608.7550.2516.9486.6438.0
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low658.9
Triple Number Coastal/Long Distance Medium528.7
Triple Number Coastal/Long Distance High476.5
Triple Number Windward/Leeward Low841.3
Triple Number Windward/Leeward Medium646.8
Triple Number Windward/Leeward High576.6
Predominantly Upwind568.2
Predominantly Downwind542.3
Predominantly Reaching518.2
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance574.91.0436
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium528.71.1348
Triple Number Coastal/Long Distance High476.51.2593
Triple Number Windward/Leeward Low841.30.7132
Triple Number Windward/Leeward Medium646.80.9277
Triple Number Windward/Leeward High576.61.0405
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance930.6712.9608.7550.2516.9486.6438.0
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9106
Triple Number Coastal/Long Distance Medium1.1348
Triple Number Coastal/Long Distance High1.2593
Triple Number Windward/Leeward Low0.7132
Triple Number Windward/Leeward Medium0.9277
Triple Number Windward/Leeward High1.0405
Coastal/Long Distance1.0436
Predominantly Upwind1.0560
Predominantly Downwind1.1063
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.9106
Tretall Distanseseilas Mellomvind1.1348
Tretall Distanseseilas Mye vind1.2593
Tretall Pølsebane Lite vind0.7132
Tretall Pølsebane Mellomvind0.9277
Tretall Pølsebane Mye vind1.0405
Distanseseilas ett tall (OSN 8-16kn)1.0436
Distanseseilas ett tall (APH 6-20kn)1.1304
Enkeltall Motvind1.0560
Enkeltall Medvind1.1063
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium528.71.1348
Triple Number Coastal/Long Distance High476.51.2593
Triple Number Windward/Leeward Low841.30.7132
Triple Number Windward/Leeward Medium646.80.9277
Triple Number Windward/Leeward High576.61.0405
Coastal/Long Distance574.91.0436
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind568.21.0560
Predominantly Downwind542.31.1063
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore560.91.0697
Cape Doctor Coastal464.01.2932
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium528.71.1348
Triple Number Coastal/Long Distance High476.51.2593
Triple Number Windward/Leeward Low841.30.7132
Triple Number Windward/Leeward Medium646.80.9277
Triple Number Windward/Leeward High576.61.0405
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9106
Triple Number Coastal/Long Distance Medium1.1348
Triple Number Coastal/Long Distance High1.2593
Triple Number Windward/Leeward Low0.7132
Triple Number Windward/Leeward Medium0.9277
Triple Number Windward/Leeward High1.0405
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9106
Triple Number Coastal/Long Distance Medium1.1348
Triple Number Coastal/Long Distance High1.2593
Triple Number Windward/Leeward Low0.7132
Triple Number Windward/Leeward Medium0.9277
Triple Number Windward/Leeward High1.0405
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance574.91.0436
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium528.71.1348
Triple Number Coastal/Long Distance High476.51.2593
Triple Number Windward/Leeward Low841.30.7132
Triple Number Windward/Leeward Medium646.80.9277
Triple Number Windward/Leeward High576.61.0405
Predominantly Upwind568.21.0560
Predominantly Downwind542.31.1063
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance930.6712.9608.7550.2516.9486.6438.0
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance574.91.0436
Triple Number Coastal/Long Distance Low658.90.9106
Triple Number Coastal/Long Distance Medium528.71.1348
Triple Number Coastal/Long Distance High476.51.2593
Triple Number Windward/Leeward Low841.30.7132
Triple Number Windward/Leeward Medium646.80.9277
Triple Number Windward/Leeward High576.61.0405
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance930.6712.9608.7550.2516.9486.6438.0
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low658.90.9106
Triple Number All Purpose Medium528.71.1348
Triple Number All Purpose High476.51.2593
Triple Number Windward/Leeward Low841.30.7132
Triple Number Windward/Leeward Medium646.80.9277
Triple Number Windward/Leeward High576.61.0405
Predominantly Upwind568.21.0560
Predominantly Downwind542.31.1063
Predominantly Upwind Low717.60.8361
Predominantly Upwind Medium585.41.0250
Predominantly Upwind High553.51.0839
Predominantly Downwind Low731.40.8203
Predominantly Downwind Medium544.51.1020
Predominantly Downwind High458.01.3101
Chicago-Mac Upwind1.0395
Chicago-Mac All Purpose1.0618
Chicago-Mac Downwind1.0882
Bayview-Mac Cove Island1.0011
Bayview-Mac Shore1.0124
Harvest Moon Regatta464.51.2916
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy556.91.0774
San Francisco Bay Medium632.70.9484
Predominantly Reaching505.71.1865
Predominantly Reaching Low603.10.9949
Predominantly Reaching Medium503.01.1928
Predominantly Reaching High442.51.3560
Windward/Leeward 60-40 Low839.90.7144
Windward/Leeward 60-40 Medium660.60.9083
Windward/Leeward 60-40 High602.40.9960
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low915.30.6555
5-Band Low / Medium775.00.7742
5-Band Medium638.00.9405
5-Band Medium / High584.91.0258
5-Band High557.11.0770
ORC Ref  04560002KEIIssued on 03/05/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

Muskrat

USA 93300

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ 105 ModMeasurement26/02/2020HINPlan reviewHull constructionCoredCarbon RudderYesLight stanchionsNoTrim tabNo
LOA10.570Max. Beam3.346Draft2.170Displacement3,673Wetted area21.49IMS L9.585LSM09.330Acc. length10.570Sink (kg/mm) 16.64
VCGD0.028VCGM0.023RM Rated (kg·m) 86.4Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.375PBW0.096PIPA0.0038
PSD0.025PHD0.049PHL0.136
PSA21.0°ESL0.920
ST10.022ST20.085ST30.085
ST40.047ST50.190
RIG
Forestay tensionAftInner stayNone FittedCarbon mastYesHeadsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays1Spreaders2Rotating mastNo
P14.005IG12.832ISP13.507MDT10.108MDL10.160MDT20.105MDL20.110TL2.060MW0.185GO0.190
E4.265J4.135BAS1.567FSDSFJSPL0.000WPLTPS5.790BD0.126MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered86.4Flotation Date26/02/2020MeasurerComment
SFFP0.966FFMFF1.104LCFcl5.822SG1.0070
SAFP10.056FAMFA0.775LCFsh6.063HBI0.927
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
TANKSIdDescriptionSp.WghtCapacityConditionLCGVCG0.9000450.000.00Total deductible410.000.00
OTHER ITEMSIdKindDescriptionWeightLCGVCGaAnchor00.00Total deductible0
ORC Ref  04560002KEIIssued on 03/05/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

Muskrat

USA 93300

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment28950660.010.881.612.763.6035.512020 MAIN
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentAP Genoa0.080.801.553.114.736.3813.01NoNo 41.0715/01/2023OUS151513-001
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment302324615.3513.1914.277.387.6796%88.452020 A1.5
ORC Ref  04560002KEIIssued on 03/05/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org