Club
Certificate
2023

Boat

MARGARET RINTOUL IV

KA 3928

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°39.6°38.1°37.0°36.4°36.0°35.7°
Beat VMG4.355.165.625.866.016.116.22
52°6.547.487.938.148.278.358.46
60°6.837.698.108.338.468.558.67
75°7.017.818.238.508.698.839.02
90°6.867.738.218.538.789.009.33
110°6.257.498.188.608.929.169.53
120°6.117.378.128.588.979.329.92
135°5.526.837.758.328.749.1510.01
150°4.665.886.957.768.298.709.50
Run VMG4.045.096.026.807.427.988.80
Gybe Angles142.9°147.5°150.5°155.9°162.8°175.4°178.1°

APH: 487.5

CDL: 11.963

GPH: 543.5

CertNo: US7167

BOAT
ClassUnknownDesignerFRERSBuilderINTERCATAge date10/1984Series date10/1984Offset fileUS18875.OFFData fileAUS3928
HULL
Length Overall15.045 mMaximum Beam4.462 mDraft2.787 mDisplacement12,188 kgDLR7.6291IMS DivisionPerformanceDynamic Allowance0.040%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameter0.585m
CREW
Maximum weight860 kgMinimum weight645 kg * when appliedNon Manual PowerNoCrew Arm Extension0.00 m
SAIL AREAS (m²)
MeasuredRatedMainsail62.0763.19Headsail Luffed94.5594.55Headsail FlyingSymmetric187.88187.88Asymmetric
STORM SAIL AREAS (m²)
Trysail17.69Storm Jib21.33Heavy Weather Jib57.57
SAIL LIMITS
Headsails7  Spinnakers5
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  04560002P4JIssued on 26/06/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

MARGARET RINTOUL IV

KA 3928

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 VMG826.8697.2640.2614.0599.0589.0578.8
52°550.8481.2453.9442.1435.4431.0425.6
60°527.1468.2444.2432.3425.6420.9415.2
75°513.8461.1437.6423.7414.3407.9399.3
90°525.1465.8438.6422.2410.0400.2385.8
110°576.2480.5439.9418.8403.5392.9377.8
120°589.7488.2443.4419.5401.5386.3363.0
135°652.0527.3464.3432.9411.7393.4359.5
150°771.9611.9518.3463.9434.3413.9378.9
Run VMG891.3706.6598.0529.6485.0451.0409.3
Selected Courses
Windward / Leeward859.1701.9619.1571.8542.0520.0494.1
All purpose664.2555.6502.3473.3455.0441.7423.1
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward593.61.0108
All purpose487.51.2307
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low609.90.9837
Triple Number Coastal/Long Distance Medium485.21.2365
Triple Number Coastal/Long Distance High438.01.3698
Triple Number Windward/Leeward Low780.40.7688
Triple Number Windward/Leeward Medium591.01.0153
Triple Number Windward/Leeward High515.81.1633
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance529.01.1342
Triple Number Coastal/Long Distance Low609.90.9837
Triple Number Coastal/Long Distance Medium485.21.2365
Triple Number Coastal/Long Distance High438.01.3698
Triple Number Windward/Leeward Low780.40.7688
Triple Number Windward/Leeward Medium591.01.0153
Triple Number Windward/Leeward High515.81.1633
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance862.3663.2562.0503.2471.5446.5408.4
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.9241
Downwind "popa"1.0317
70% up, 30% down "Ilhabela"0.9539
30% up, 70% down "Ilhabela-inverso"0.9969
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low609.90.9837
Triple Number Coastal/Long Distance Medium485.21.2365
Triple Number Coastal/Long Distance High438.01.3698
Triple Number Windward/Leeward Low780.40.7688
Triple Number Windward/Leeward Medium591.01.0153
Triple Number Windward/Leeward High515.81.1633
Predominantly Upwind518.61.1569
Predominantly Downwind500.91.1978
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low609.90.9837
Triple Number All Purpose Medium485.21.2365
Triple Number All Purpose High438.01.3698
Triple Number Windward/Leeward Low780.40.7688
Triple Number Windward/Leeward Medium591.01.0153
Triple Number Windward/Leeward High515.81.1633
Predominantly Upwind518.61.1569
Predominantly Downwind500.91.1978
Predominantly Upwind Low658.80.9108
Predominantly Upwind Medium532.11.1277
Predominantly Upwind High500.31.1992
Predominantly Downwind Low682.80.8788
Predominantly Downwind Medium502.11.1950
Predominantly Downwind High422.51.4202
Chicago-Mac Upwind1.1385
Chicago-Mac All Purpose1.1548
Chicago-Mac Downwind1.1771
Bayview-Mac Cove Island1.0865
Bayview-Mac Shore1.1005
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching465.61.2887
Predominantly Reaching Low556.41.0783
Predominantly Reaching Medium462.41.2975
Predominantly Reaching High413.81.4500
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low847.00.7084
5-Band Low / Medium718.30.8354
5-Band Medium581.21.0324
5-Band Medium / High523.71.1456
5-Band High498.51.2035
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance529.01.1342
Triple Number Coastal/Long Distance Low609.90.9837
Triple Number Coastal/Long Distance Medium485.21.2365
Triple Number Coastal/Long Distance High438.01.3698
Triple Number Windward/Leeward Low780.40.7688
Triple Number Windward/Leeward Medium591.01.0153
Triple Number Windward/Leeward High515.81.1633
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance862.3663.2562.0503.2471.5446.5408.4
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance529.01.1342
Triple Number Coastal/Long Distance Low609.90.9837
Triple Number Coastal/Long Distance Medium485.21.2365
Triple Number Coastal/Long Distance High438.01.3698
Triple Number Windward/Leeward Low780.40.7688
Triple Number Windward/Leeward Medium591.01.0153
Triple Number Windward/Leeward High515.81.1633
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance862.3663.2562.0503.2471.5446.5408.4
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance529.0
Triple Number Coastal/Long Distance Low609.9
Triple Number Coastal/Long Distance Medium485.2
Triple Number Coastal/Long Distance High438.0
Triple Number Windward/Leeward Low780.4
Triple Number Windward/Leeward Medium591.0
Triple Number Windward/Leeward High515.8
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance862.3663.2562.0503.2471.5446.5408.4
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance529.01.1342
Triple Number Coastal/Long Distance Low609.90.9837
Triple Number Coastal/Long Distance Medium485.21.2365
Triple Number Coastal/Long Distance High438.01.3698
Triple Number Windward/Leeward Low780.40.7688
Triple Number Windward/Leeward Medium591.01.0153
Triple Number Windward/Leeward High515.81.1633
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance862.3663.2562.0503.2471.5446.5408.4
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)529.01.1342
Triple Number Coastal/Long Distance Low609.90.9837
Triple Number Coastal/Long Distance Medium485.21.2365
Triple Number Coastal/Long Distance High438.01.3698
Triple Number Windward/Leeward Low780.40.7688
Triple Number Windward/Leeward Medium591.01.0153
Triple Number Windward/Leeward High515.81.1633
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance862.3663.2562.0503.2471.5446.5408.4
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low609.90.9837
Triple Number Coastal/Long Distance Medium485.21.2365
Triple Number Coastal/Long Distance High438.01.3698
Triple Number Windward/Leeward Low780.40.7688
Triple Number Windward/Leeward Medium591.01.0153
Triple Number Windward/Leeward High515.81.1633
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9837
Triple Number Coastal/Long Distance Medium1.2365
Triple Number Coastal/Long Distance High1.3698
Triple Number Windward/Leeward Low0.7688
Triple Number Windward/Leeward Medium1.0153
Triple Number Windward/Leeward High1.1633
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance862.3663.2562.0503.2471.5446.5408.4
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance529.01.1342
Triple Number Coastal/Long Distance Low609.90.9837
Triple Number Coastal/Long Distance Medium485.21.2365
Triple Number Coastal/Long Distance High438.01.3698
Triple Number Windward/Leeward Low780.40.7688
Triple Number Windward/Leeward Medium591.01.0153
Triple Number Windward/Leeward High515.81.1633
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance862.3663.2562.0503.2471.5446.5408.4
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low609.90.9837
Triple Number Coastal/Long Distance Medium485.21.2365
Triple Number Coastal/Long Distance High438.01.3698
Triple Number Windward/Leeward Low780.40.7688
Triple Number Windward/Leeward Medium591.01.0153
Triple Number Windward/Leeward High515.81.1633
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance529.01.1342
Triple Number Coastal/Long Distance Low609.90.9837
Triple Number Coastal/Long Distance Medium485.21.2365
Triple Number Coastal/Long Distance High438.01.3698
Triple Number Windward/Leeward Low780.40.7688
Triple Number Windward/Leeward Medium591.01.0153
Triple Number Windward/Leeward High515.81.1633
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance862.3663.2562.0503.2471.5446.5408.4
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low780.40.7688
Triple Number Windward/Leeward Medium591.01.0153
Triple Number Windward/Leeward High515.81.1633
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance862.3663.2562.0503.2471.5446.5408.4
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low609.9
Triple Number Coastal/Long Distance Medium485.2
Triple Number Coastal/Long Distance High438.0
Triple Number Windward/Leeward Low780.4
Triple Number Windward/Leeward Medium591.0
Triple Number Windward/Leeward High515.8
Predominantly Upwind518.6
Predominantly Downwind500.9
Predominantly Reaching478.4
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance529.01.1342
Triple Number Coastal/Long Distance Low609.90.9837
Triple Number Coastal/Long Distance Medium485.21.2365
Triple Number Coastal/Long Distance High438.01.3698
Triple Number Windward/Leeward Low780.40.7688
Triple Number Windward/Leeward Medium591.01.0153
Triple Number Windward/Leeward High515.81.1633
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance862.3663.2562.0503.2471.5446.5408.4
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9837
Triple Number Coastal/Long Distance Medium1.2365
Triple Number Coastal/Long Distance High1.3698
Triple Number Windward/Leeward Low0.7688
Triple Number Windward/Leeward Medium1.0153
Triple Number Windward/Leeward High1.1633
Coastal/Long Distance1.1342
Predominantly Upwind1.1569
Predominantly Downwind1.1978
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.9837
Tretall Distanseseilas Mellomvind1.2365
Tretall Distanseseilas Mye vind1.3698
Tretall Pølsebane Lite vind0.7688
Tretall Pølsebane Mellomvind1.0153
Tretall Pølsebane Mye vind1.1633
Distanseseilas ett tall (OSN 8-16kn)1.1342
Distanseseilas ett tall (APH 6-20kn)1.2307
Enkeltall Motvind1.1569
Enkeltall Medvind1.1978
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low609.90.9837
Triple Number Coastal/Long Distance Medium485.21.2365
Triple Number Coastal/Long Distance High438.01.3698
Triple Number Windward/Leeward Low780.40.7688
Triple Number Windward/Leeward Medium591.01.0153
Triple Number Windward/Leeward High515.81.1633
Coastal/Long Distance529.01.1342
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind518.61.1569
Predominantly Downwind500.91.1978
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore501.81.1956
Cape Doctor Coastal428.71.3997
Triple Number Coastal/Long Distance Low609.90.9837
Triple Number Coastal/Long Distance Medium485.21.2365
Triple Number Coastal/Long Distance High438.01.3698
Triple Number Windward/Leeward Low780.40.7688
Triple Number Windward/Leeward Medium591.01.0153
Triple Number Windward/Leeward High515.81.1633
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9837
Triple Number Coastal/Long Distance Medium1.2365
Triple Number Coastal/Long Distance High1.3698
Triple Number Windward/Leeward Low0.7688
Triple Number Windward/Leeward Medium1.0153
Triple Number Windward/Leeward High1.1633
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9837
Triple Number Coastal/Long Distance Medium1.2365
Triple Number Coastal/Long Distance High1.3698
Triple Number Windward/Leeward Low0.7688
Triple Number Windward/Leeward Medium1.0153
Triple Number Windward/Leeward High1.1633
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance529.01.1342
Triple Number Coastal/Long Distance Low609.90.9837
Triple Number Coastal/Long Distance Medium485.21.2365
Triple Number Coastal/Long Distance High438.01.3698
Triple Number Windward/Leeward Low780.40.7688
Triple Number Windward/Leeward Medium591.01.0153
Triple Number Windward/Leeward High515.81.1633
Predominantly Upwind518.61.1569
Predominantly Downwind500.91.1978
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance862.3663.2562.0503.2471.5446.5408.4
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance529.01.1342
Triple Number Coastal/Long Distance Low609.90.9837
Triple Number Coastal/Long Distance Medium485.21.2365
Triple Number Coastal/Long Distance High438.01.3698
Triple Number Windward/Leeward Low780.40.7688
Triple Number Windward/Leeward Medium591.01.0153
Triple Number Windward/Leeward High515.81.1633
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance862.3663.2562.0503.2471.5446.5408.4
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low609.90.9837
Triple Number All Purpose Medium485.21.2365
Triple Number All Purpose High438.01.3698
Triple Number Windward/Leeward Low780.40.7688
Triple Number Windward/Leeward Medium591.01.0153
Triple Number Windward/Leeward High515.81.1633
Predominantly Upwind518.61.1569
Predominantly Downwind500.91.1978
Predominantly Upwind Low658.80.9108
Predominantly Upwind Medium532.11.1277
Predominantly Upwind High500.31.1992
Predominantly Downwind Low682.80.8788
Predominantly Downwind Medium502.11.1950
Predominantly Downwind High422.51.4202
Chicago-Mac Upwind1.1385
Chicago-Mac All Purpose1.1548
Chicago-Mac Downwind1.1771
Bayview-Mac Cove Island1.0865
Bayview-Mac Shore1.1005
Harvest Moon Regatta431.11.3918
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy505.91.1859
San Francisco Bay Medium582.11.0307
Predominantly Reaching465.61.2887
Predominantly Reaching Low556.41.0783
Predominantly Reaching Medium462.41.2975
Predominantly Reaching High413.81.4500
Windward/Leeward 60-40 Low776.80.7724
Windward/Leeward 60-40 Medium602.90.9952
Windward/Leeward 60-40 High540.21.1106
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low847.00.7084
5-Band Low / Medium718.30.8354
5-Band Medium581.21.0324
5-Band Medium / High523.71.1456
5-Band High498.51.2035
ORC Ref  04560002P4JIssued on 26/06/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

MARGARET RINTOUL IV

KA 3928

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassUnknownMeasurement30/04/1991HINPlan reviewHull constructionLightCarbon RudderNoLight stanchionsNoTrim tabNo
LOA15.045Max. Beam4.462Draft2.787Displacement12,188Wetted area41.46IMS L12.095LSM011.689Acc. length14.502Sink (kg/mm) 29.73
VCGD-0.449VCGM-0.348RM Rated (kg·m) 400.2Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.585PBW0.146PIPA0.0051
PSD0.037PHD0.061PHL0.186
PSA18.0°ESL0.870
ST10.036ST20.226ST30.290
ST40.064ST50.155
RIG
Forestay tensionAftInner stayNone FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays1Spreaders3Rotating mastNo
P18.171IG20.533ISP20.630MDT10.158MDL10.250MDT20.152MDL20.195TL2.725MW0.180GO0.213
E5.560J5.803BAS1.957FSD0.022SFJ0.267SPL6.212WPLTPS0.000BD0.270MWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered404.8Flotation Date04/06/1989MeasurerComment
SFFP0.875FFMFF1.485LCFcl7.874SG1.0000
SAFP13.201FAMFA1.116LCFsh8.181HBI1.236
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  04560002P4JIssued on 26/06/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

MARGARET RINTOUL IV

KA 3928

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment18685000.191.252.203.724.8462.072018 MAINSAIL5644670.231.371.833.724.2158.26
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment5644658.660.00NoNo 94.5525662510.121.072.134.256.498.8419.81NoNo 85.972019 heavy #1
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment56446320.2820.2820.2810.86187.88
ORC Ref  04560002P4JIssued on 26/06/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org