Club
Certificate
2024

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 24 kt
Beat Angles42.1°39.8°38.0°37.0°36.5°36.1°35.7°35.9°
Beat VMG4.355.175.645.876.016.116.226.24
52°6.547.497.948.158.278.348.468.51
60°6.837.708.118.338.468.548.688.75
75°7.017.818.238.508.698.839.019.16
90°6.867.738.228.538.788.999.329.54
110°6.267.508.198.608.929.159.519.80
120°6.117.388.128.598.979.329.8910.35
135°5.526.837.758.328.749.1510.0111.15
150°4.665.886.947.758.298.699.4810.43
Run VMG4.045.096.016.797.417.968.789.52
Gybe Angles142.9°146.9°150.5°155.4°162.1°174.5°178.1°178.1°
APH ToD:487.4CDL: 11.990APH ToT: 1.2310CertNo: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 kg(default)Minimum weight730 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.

Club
Certificate
2024

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 24 kt
Beat VMG826.8696.3638.5612.9598.7589.6578.7576.8
52°550.7480.7453.5441.5435.1431.5425.5423.0
60°527.0467.8443.9432.0425.4421.6415.0411.5
75°513.7460.8437.3423.7414.4407.9399.4392.9
90°524.9465.4438.2421.9409.9400.3386.1377.2
110°575.4479.9439.5418.6403.6393.4378.4367.5
120°589.0487.8443.1419.2401.4386.3363.9348.0
135°651.8527.3464.2432.9411.9393.5359.8322.9
150°772.4612.6518.7464.2434.5414.2379.6345.0
Run VMG891.9707.3598.8530.5485.9452.1410.2378.2
Selected Courses
Windward / Leeward859.3701.8618.6571.7542.3520.8494.5477.5
All purpose664.2555.3501.9473.1455.0442.0423.4409.1
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward593.61.0107
All purpose487.41.2310
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low609.80.9840
Triple Number Coastal/Long Distance Medium485.01.2371
Triple Number Coastal/Long Distance High438.31.3690
Triple Number Windward/Leeward Low780.50.7687
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High516.31.1621
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance529.01.1343
Triple Number Coastal/Long Distance Low609.80.9840
Triple Number Coastal/Long Distance Medium485.01.2371
Triple Number Coastal/Long Distance High438.31.3690
Triple Number Windward/Leeward Low780.50.7687
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High516.31.1621
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance862.6663.1561.6502.9471.5446.9408.8395.3
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.9248
Downwind "popa"1.0303
70% up, 30% down "Ilhabela"0.9541
30% up, 70% down "Ilhabela-inverso"0.9962
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low609.80.9840
Triple Number Coastal/Long Distance Medium485.01.2371
Triple Number Coastal/Long Distance High438.31.3690
Triple Number Windward/Leeward Low780.50.7687
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High516.31.1621
Predominantly Upwind518.41.1575
Predominantly Downwind501.11.1974
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low609.80.9840
Triple Number AP Medium485.11.2370
Triple Number AP High438.31.3690
Triple Number Windward/Leeward Low780.50.7687
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High516.31.1621
Single Number Predominant Upwind516.91.1608
Single Number Predominant Reaching468.71.2800
Single Number Predominant Downwind502.01.1952
Predominant Upwind - Low650.20.9228
Predominant Upwind - Low/Med558.61.0741
Predominant Upwind - Medium504.91.1883
Predominant Upwind - Med/High476.21.2599
Predominant Upwind - High461.11.3013
Predominant Downwind Low683.30.8781
Predominant Downwind Low/Med563.31.0651
Predominant Downwind Medium485.11.2368
Predominant Downwind Med/High435.41.3780
Predominant Downwind High405.31.4804
Predominant Reaching Low597.01.0051
Predominant Reaching Low/Med510.61.1751
Predominant Reaching Medium457.31.3121
Predominant Reaching Med/High424.51.4133
Predominant Reaching High403.71.4861
SA/DSPL Upwind29.33SA/DSPL Downwind46.80
Scoring OptionTODTOT
5-Band Windward/Leeward Low823.60.7285
5-Band Windward/Leeward Low/Med676.50.8870
5-Band Windward/Leeward Medium581.21.0324
5-Band Windward/Leeward Med/High524.31.1444
5-Band Windward/Leeward High496.11.2095
Windward/Leeward 60-40 Low818.30.7332
Windward/Leeward 60-40 Low/Med677.70.8853
Windward/Leeward 60-40 Medium588.91.0189
Windward/Leeward 60-40 Med/High537.71.1159
Windward/Leeward 60-40 High512.91.1698
5-Band AP Low639.50.9383
5-Band AP Low/Med540.41.1103
5-Band AP Medium479.11.2524
5-Band AP Med/High443.71.3523
5-Band AP High424.21.4146
5-Band SF Bay Tour - Low779.70.7695
5-Band SF Bay Tour - Low/Med645.10.9301
5-Band SF Bay Tour - Medium560.41.0706
5-Band SF Bay Tour - Med/High511.81.1723
5-Band SF Bay Tour - High486.61.2331
Chicago-Mac Upwind1.1393
Chicago-Mac All Purpose1.1551
Chicago-Mac Downwind1.1767
Bayview-Mac Cove Island1.0868
Bayview-Mac Shore1.1010
Harvest Moon Regatta431.21.3916
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance529.01.1343
Triple Number Coastal/Long Distance Low609.80.9840
Triple Number Coastal/Long Distance Medium485.01.2371
Triple Number Coastal/Long Distance High438.31.3690
Triple Number Windward/Leeward Low780.50.7687
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High516.31.1621
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance862.6663.1561.6502.9471.5446.9408.8395.3
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance529.01.1343
Triple Number Coastal/Long Distance Low609.80.9840
Triple Number Coastal/Long Distance Medium485.01.2371
Triple Number Coastal/Long Distance High438.31.3690
Triple Number Windward/Leeward Low780.50.7687
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High516.31.1621
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance862.6663.1561.6502.9471.5446.9408.8395.3
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance529.0
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance862.6663.1561.6502.9471.5446.9408.8395.3
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low609.80.9840
Triple Number Coastal/Long Distance Medium485.01.2371
Triple Number Coastal/Long Distance High438.31.3690
Triple Number Windward/Leeward Low780.50.7687
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High516.31.1621
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating (Coastal/Long Distance)529.01.1343
Triple Number Coastal/Long Distance Low609.80.9840
Triple Number Coastal/Long Distance Medium485.01.2371
Triple Number Coastal/Long Distance High438.31.3690
Triple Number Windward/Leeward Low780.50.7687
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High516.31.1621
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance862.6663.1561.6502.9471.5446.9408.8395.3
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low609.80.9840
Triple Number Coastal/Long Distance Medium485.01.2371
Triple Number Coastal/Long Distance High438.31.3690
Triple Number Windward/Leeward Low780.50.7687
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High516.31.1621
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9840
Triple Number Coastal/Long Distance Medium1.2371
Triple Number Coastal/Long Distance High1.3690
Triple Number Windward/Leeward Low0.7687
Triple Number Windward/Leeward Medium1.0155
Triple Number Windward/Leeward High1.1621
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance862.6663.1561.6502.9471.5446.9408.8395.3
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance529.01.1343
Triple Number Coastal/Long Distance Low609.80.9840
Triple Number Coastal/Long Distance Medium485.01.2371
Triple Number Coastal/Long Distance High438.31.3690
Triple Number Windward/Leeward Low780.50.7687
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High516.31.1621
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance862.6663.1561.6502.9471.5446.9408.8395.3
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low609.80.9840
Triple Number Coastal/Long Distance Medium485.01.2371
Triple Number Coastal/Long Distance High438.31.3690
Triple Number Windward/Leeward Low780.50.7687
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High516.31.1621
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance529.01.1343
Triple Number Coastal/Long Distance Low609.80.9840
Triple Number Coastal/Long Distance Medium485.01.2371
Triple Number Coastal/Long Distance High438.31.3690
Triple Number Windward/Leeward Low780.50.7687
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High516.31.1621
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance862.6663.1561.6502.9471.5446.9408.8395.3
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance529.01.1343
Triple Number Coastal/Long Distance Low609.80.9840
Triple Number Coastal/Long Distance Medium485.01.2371
Triple Number Coastal/Long Distance High438.31.3690
Triple Number Windward/Leeward Low780.50.7687
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High516.31.1621
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance862.6663.1561.6502.9471.5446.9408.8395.3
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low609.8
Triple Number Coastal/Long Distance Medium485.0
Triple Number Coastal/Long Distance High438.3
Triple Number Windward/Leeward Low780.5
Triple Number Windward/Leeward Medium590.8
Triple Number Windward/Leeward High516.3
Predominantly Upwind518.4
Predominantly Downwind501.1
Predominantly Reaching478.4
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance529.01.1343
Triple Number Coastal/Long Distance Low609.80.9840
Triple Number Coastal/Long Distance Medium485.01.2371
Triple Number Coastal/Long Distance High438.31.3690
Triple Number Windward/Leeward Low780.50.7687
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High516.31.1621
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance862.6663.1561.6502.9471.5446.9408.8395.3
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9840
Triple Number Coastal/Long Distance Medium1.2371
Triple Number Coastal/Long Distance High1.3690
Triple Number Windward/Leeward Low0.7687
Triple Number Windward/Leeward Medium1.0155
Triple Number Windward/Leeward High1.1621
Coastal/Long Distance1.1343
Predominantly Upwind1.1575
Predominantly Downwind1.1974
For information
General Purpose Handicap (GPH)543.3
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.9840
Tretall Distanseseilas Mellomvind1.2371
Tretall Distanseseilas Mye vind1.3690
Tretall Pølsebane Lite vind0.7687
Tretall Pølsebane Mellomvind1.0155
Tretall Pølsebane Mye vind1.1621
Distanseseilas ett tall1.2310
Enkeltall Motvind1.1575
Enkeltall Medvind1.1974
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low609.80.9840
Triple Number Coastal/Long Distance Medium485.01.2371
Triple Number Coastal/Long Distance High438.31.3690
Triple Number Windward/Leeward Low780.50.7687
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High516.31.1621
Coastal/Long Distance529.01.1343
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind518.41.1575
Predominantly Downwind501.11.1974
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore482.61.2434
Cape Doctor Coastal413.41.4515
Triple Number Coastal/Long Distance Low609.80.9840
Triple Number Coastal/Long Distance Medium485.01.2371
Triple Number Coastal/Long Distance High438.31.3690
Triple Number Windward/Leeward Low780.50.7687
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High516.31.1621
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9840
Triple Number Coastal/Long Distance Medium1.2371
Triple Number Coastal/Long Distance High1.3690
Triple Number Windward/Leeward Low0.7687
Triple Number Windward/Leeward Medium1.0155
Triple Number Windward/Leeward High1.1621
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9840
Triple Number Coastal/Long Distance Medium1.2371
Triple Number Coastal/Long Distance High1.3690
Triple Number Windward/Leeward Low0.7687
Triple Number Windward/Leeward Medium1.0155
Triple Number Windward/Leeward High1.1621
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance529.01.1343
Triple Number Coastal/Long Distance Low609.80.9840
Triple Number Coastal/Long Distance Medium485.01.2371
Triple Number Coastal/Long Distance High438.31.3690
Triple Number Windward/Leeward Low780.50.7687
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High516.31.1621
Predominantly Upwind518.41.1575
Predominantly Downwind501.11.1974
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance862.6663.1561.6502.9471.5446.9408.8395.3
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance529.01.1343
Triple Number Coastal/Long Distance Low609.80.9840
Triple Number Coastal/Long Distance Medium485.01.2371
Triple Number Coastal/Long Distance High438.31.3690
Triple Number Windward/Leeward Low780.50.7687
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High516.31.1621
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance862.6663.1561.6502.9471.5446.9408.8395.3
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low609.80.9840
Triple Number AP Medium485.11.2370
Triple Number AP High438.31.3690
Triple Number Windward/Leeward Low780.50.7687
Triple Number Windward/Leeward Medium590.81.0155
Triple Number Windward/Leeward High516.31.1621
Single Number Predominant Upwind516.91.1608
Single Number Predominant Reaching468.71.2800
Single Number Predominant Downwind502.01.1952
Predominant Upwind - Low650.20.9228
Predominant Upwind - Low/Med558.61.0741
Predominant Upwind - Medium504.91.1883
Predominant Upwind - Med/High476.21.2599
Predominant Upwind - High461.11.3013
Predominant Downwind Low683.30.8781
Predominant Downwind Low/Med563.31.0651
Predominant Downwind Medium485.11.2368
Predominant Downwind Med/High435.41.3780
Predominant Downwind High405.31.4804
Predominant Reaching Low597.01.0051
Predominant Reaching Low/Med510.61.1751
Predominant Reaching Medium457.31.3121
Predominant Reaching Med/High424.51.4133
Predominant Reaching High403.71.4861
SA/DSPL Upwind29.33SA/DSPL Downwind46.80
Scoring OptionTODTOT
5-Band Windward/Leeward Low823.60.7285
5-Band Windward/Leeward Low/Med676.50.8870
5-Band Windward/Leeward Medium581.21.0324
5-Band Windward/Leeward Med/High524.31.1444
5-Band Windward/Leeward High496.11.2095
Windward/Leeward 60-40 Low818.30.7332
Windward/Leeward 60-40 Low/Med677.70.8853
Windward/Leeward 60-40 Medium588.91.0189
Windward/Leeward 60-40 Med/High537.71.1159
Windward/Leeward 60-40 High512.91.1698
5-Band AP Low639.50.9383
5-Band AP Low/Med540.41.1103
5-Band AP Medium479.11.2524
5-Band AP Med/High443.71.3523
5-Band AP High424.21.4146
5-Band SF Bay Tour - Low779.70.7695
5-Band SF Bay Tour - Low/Med645.10.9301
5-Band SF Bay Tour - Medium560.41.0706
5-Band SF Bay Tour - Med/High511.81.1723
5-Band SF Bay Tour - High486.61.2331
Chicago-Mac Upwind1.1393
Chicago-Mac All Purpose1.1551
Chicago-Mac Downwind1.1767
Bayview-Mac Cove Island1.0868
Bayview-Mac Shore1.1010
Harvest Moon Regatta431.21.3916

Club
Certificate
2024

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 L12.107LSM011.689Acc. length14.502Sink (kg/mm) 29.73
VCGD-0.449VCGM-0.348RM Rated (kg·m) 400.2Limit of positive stability(°) N/AStability IndexN/ADefault crew weight860Declared crew weightN/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 FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunners/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 Date04/06/1989
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible

Club
Certificate
2024

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