Club
Certificate
2024

Boat

MOSTLY HARMLESS

USA 25668

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 Angles42.8°40.8°39.5°38.5°37.7°37.1°37.2°37.5°
Beat VMG3.684.424.945.255.405.495.565.55
52°5.576.517.077.367.537.617.697.72
60°5.846.747.237.517.687.797.897.94
75°6.006.877.357.647.858.018.228.33
90°5.866.807.337.677.908.108.438.66
110°5.676.817.477.858.158.428.809.07
120°5.516.667.387.818.158.469.029.49
135°4.986.157.037.557.918.238.889.57
150°4.205.316.267.027.517.858.459.07
Run VMG3.644.605.426.146.747.267.958.52
Gybe Angles143.7°147.1°150.1°155.4°164.6°175.9°178.8°178.6°
APH ToD:543.6CDL: 10.100APH ToT: 1.1038CertNo:US7271
BOAT
ClassBENETEAU 42DesignerFRERSBuilderBENETEAUAge date06/1983Series date07/1981Offset fileFIRST42.offData fileUS6743
HULL
Length Overall12.800 mMaximum Beam3.982 mDraft2.264 mDisplacement10,319 kgDLR8.6749IMS DivisionPerformanceDynamic Allowance0.310%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFeathering 3 bladesDiameter0.468m
CREW
Maximum weight800 kg(declared)Minimum weight670 kg * when appliedNon Manual PowerNoCrew Arm Extension0.00 m
SAIL AREAS (m²)
MeasuredRatedMainsail39.7840.36Headsail Luffed65.1865.18Headsail FlyingSymmetricAsymmetric127.72127.72 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail11.68Storm Jib14.33Heavy Weather Jib38.69
SAIL LIMITS
Headsails6  Spinnakers5 * Asymmetric may be tacked on the pole
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

MOSTLY HARMLESS

USA 25668

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 VMG979.2815.2728.9686.2666.3655.3647.4648.1
52°646.1553.1509.3489.0478.3472.8468.2466.6
60°616.7534.4497.7479.3468.5461.9456.3453.2
75°600.5524.1489.9471.3458.9449.6437.9432.1
90°614.1529.7490.9469.1455.9444.4427.0415.5
110°635.2528.4482.2458.5441.5427.6408.9397.0
120°653.6540.4487.6461.1442.0425.8399.2379.3
135°723.0585.6512.4476.6454.9437.2405.5376.0
150°856.9677.5575.0512.6479.3458.4425.9396.7
Run VMG989.5782.3663.9586.5534.1495.6452.6422.7
Selected Courses
Windward / Leeward984.3798.7696.4636.3600.2575.4550.0535.4
All purpose760.4629.5561.8524.7502.9487.9469.2456.5
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward664.40.9031
All purpose543.61.1038
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low694.90.8634
Triple Number Coastal/Long Distance Medium540.31.1104
Triple Number Coastal/Long Distance High484.61.2381
Triple Number Windward/Leeward Low891.50.6730
Triple Number Windward/Leeward Medium660.90.9079
Triple Number Windward/Leeward High572.11.0488
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance591.01.0152
Triple Number Coastal/Long Distance Low694.90.8634
Triple Number Coastal/Long Distance Medium540.31.1104
Triple Number Coastal/Long Distance High484.61.2381
Triple Number Windward/Leeward Low891.50.6730
Triple Number Windward/Leeward Medium660.90.9079
Triple Number Windward/Leeward High572.11.0488
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance984.9753.1630.5558.7521.6493.6451.9438.0
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8111
Downwind "popa"0.9324
70% up, 30% down "Ilhabela"0.8440
30% up, 70% down "Ilhabela-inverso"0.8923
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low694.90.8634
Triple Number Coastal/Long Distance Medium540.31.1104
Triple Number Coastal/Long Distance High484.61.2381
Triple Number Windward/Leeward Low891.50.6730
Triple Number Windward/Leeward Medium660.90.9079
Triple Number Windward/Leeward High572.11.0488
Predominantly Upwind582.11.0308
Predominantly Downwind557.41.0764
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low695.00.8634
Triple Number AP Medium540.41.1103
Triple Number AP High484.61.2381
Triple Number Windward/Leeward Low891.50.6730
Triple Number Windward/Leeward Medium660.90.9079
Triple Number Windward/Leeward High572.11.0488
Single Number Predominant Upwind580.71.0332
Single Number Predominant Reaching523.41.1463
Single Number Predominant Downwind558.11.0752
Predominant Upwind - Low754.70.7951
Predominant Upwind - Low/Med636.30.9429
Predominant Upwind - Medium563.81.0642
Predominant Upwind - Med/High527.21.1381
Predominant Upwind - High512.21.1713
Predominant Downwind Low770.10.7791
Predominant Downwind Low/Med630.00.9524
Predominant Downwind Medium537.91.1155
Predominant Downwind Med/High481.51.2462
Predominant Downwind High451.21.3297
Predominant Reaching Low683.00.8784
Predominant Reaching Low/Med575.41.0427
Predominant Reaching Medium508.51.1800
Predominant Reaching Med/High470.21.2760
Predominant Reaching High449.01.3364
SA/DSPL Upwind21.97SA/DSPL Downwind35.06
Scoring OptionTODTOT
5-Band Windward/Leeward Low942.20.6368
5-Band Windward/Leeward Low/Med766.00.7833
5-Band Windward/Leeward Medium648.80.9248
5-Band Windward/Leeward Med/High580.51.0336
5-Band Windward/Leeward High551.91.0872
Windward/Leeward 60-40 Low942.20.6368
Windward/Leeward 60-40 Low/Med770.80.7784
Windward/Leeward 60-40 Medium658.60.9110
Windward/Leeward 60-40 Med/High596.11.0066
Windward/Leeward 60-40 High571.31.0503
5-Band AP Low730.70.8211
5-Band AP Low/Med609.50.9845
5-Band AP Medium532.91.1260
5-Band AP Med/High490.41.2235
5-Band AP High470.21.2760
5-Band SF Bay Tour - Low893.70.6714
5-Band SF Bay Tour - Low/Med731.20.8206
5-Band SF Bay Tour - Medium625.70.9589
5-Band SF Bay Tour - Med/High567.41.0574
5-Band SF Bay Tour - High542.51.1059
Chicago-Mac Upwind1.0127
Chicago-Mac All Purpose1.0315
Chicago-Mac Downwind1.0571
Bayview-Mac Cove Island0.9619
Bayview-Mac Shore0.9735
Harvest Moon Regatta478.91.2528
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance591.01.0152
Triple Number Coastal/Long Distance Low694.90.8634
Triple Number Coastal/Long Distance Medium540.31.1104
Triple Number Coastal/Long Distance High484.61.2381
Triple Number Windward/Leeward Low891.50.6730
Triple Number Windward/Leeward Medium660.90.9079
Triple Number Windward/Leeward High572.11.0488
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance984.9753.1630.5558.7521.6493.6451.9438.0
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance591.01.0152
Triple Number Coastal/Long Distance Low694.90.8634
Triple Number Coastal/Long Distance Medium540.31.1104
Triple Number Coastal/Long Distance High484.61.2381
Triple Number Windward/Leeward Low891.50.6730
Triple Number Windward/Leeward Medium660.90.9079
Triple Number Windward/Leeward High572.11.0488
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance984.9753.1630.5558.7521.6493.6451.9438.0
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance591.0
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance984.9753.1630.5558.7521.6493.6451.9438.0
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low694.90.8634
Triple Number Coastal/Long Distance Medium540.31.1104
Triple Number Coastal/Long Distance High484.61.2381
Triple Number Windward/Leeward Low891.50.6730
Triple Number Windward/Leeward Medium660.90.9079
Triple Number Windward/Leeward High572.11.0488
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating (Coastal/Long Distance)591.01.0152
Triple Number Coastal/Long Distance Low694.90.8634
Triple Number Coastal/Long Distance Medium540.31.1104
Triple Number Coastal/Long Distance High484.61.2381
Triple Number Windward/Leeward Low891.50.6730
Triple Number Windward/Leeward Medium660.90.9079
Triple Number Windward/Leeward High572.11.0488
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance984.9753.1630.5558.7521.6493.6451.9438.0
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low694.90.8634
Triple Number Coastal/Long Distance Medium540.31.1104
Triple Number Coastal/Long Distance High484.61.2381
Triple Number Windward/Leeward Low891.50.6730
Triple Number Windward/Leeward Medium660.90.9079
Triple Number Windward/Leeward High572.11.0488
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8634
Triple Number Coastal/Long Distance Medium1.1104
Triple Number Coastal/Long Distance High1.2381
Triple Number Windward/Leeward Low0.6730
Triple Number Windward/Leeward Medium0.9079
Triple Number Windward/Leeward High1.0488
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance984.9753.1630.5558.7521.6493.6451.9438.0
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance591.01.0152
Triple Number Coastal/Long Distance Low694.90.8634
Triple Number Coastal/Long Distance Medium540.31.1104
Triple Number Coastal/Long Distance High484.61.2381
Triple Number Windward/Leeward Low891.50.6730
Triple Number Windward/Leeward Medium660.90.9079
Triple Number Windward/Leeward High572.11.0488
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance984.9753.1630.5558.7521.6493.6451.9438.0
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low694.90.8634
Triple Number Coastal/Long Distance Medium540.31.1104
Triple Number Coastal/Long Distance High484.61.2381
Triple Number Windward/Leeward Low891.50.6730
Triple Number Windward/Leeward Medium660.90.9079
Triple Number Windward/Leeward High572.11.0488
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance591.01.0152
Triple Number Coastal/Long Distance Low694.90.8634
Triple Number Coastal/Long Distance Medium540.31.1104
Triple Number Coastal/Long Distance High484.61.2381
Triple Number Windward/Leeward Low891.50.6730
Triple Number Windward/Leeward Medium660.90.9079
Triple Number Windward/Leeward High572.11.0488
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance984.9753.1630.5558.7521.6493.6451.9438.0
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance591.01.0152
Triple Number Coastal/Long Distance Low694.90.8634
Triple Number Coastal/Long Distance Medium540.31.1104
Triple Number Coastal/Long Distance High484.61.2381
Triple Number Windward/Leeward Low891.50.6730
Triple Number Windward/Leeward Medium660.90.9079
Triple Number Windward/Leeward High572.11.0488
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance984.9753.1630.5558.7521.6493.6451.9438.0
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low694.9
Triple Number Coastal/Long Distance Medium540.3
Triple Number Coastal/Long Distance High484.6
Triple Number Windward/Leeward Low891.5
Triple Number Windward/Leeward Medium660.9
Triple Number Windward/Leeward High572.1
Predominantly Upwind582.1
Predominantly Downwind557.4
Predominantly Reaching533.5
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance591.01.0152
Triple Number Coastal/Long Distance Low694.90.8634
Triple Number Coastal/Long Distance Medium540.31.1104
Triple Number Coastal/Long Distance High484.61.2381
Triple Number Windward/Leeward Low891.50.6730
Triple Number Windward/Leeward Medium660.90.9079
Triple Number Windward/Leeward High572.11.0488
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance984.9753.1630.5558.7521.6493.6451.9438.0
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8634
Triple Number Coastal/Long Distance Medium1.1104
Triple Number Coastal/Long Distance High1.2381
Triple Number Windward/Leeward Low0.6730
Triple Number Windward/Leeward Medium0.9079
Triple Number Windward/Leeward High1.0488
Coastal/Long Distance1.0152
Predominantly Upwind1.0308
Predominantly Downwind1.0764
For information
General Purpose Handicap (GPH)609.2
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.8634
Tretall Distanseseilas Mellomvind1.1104
Tretall Distanseseilas Mye vind1.2381
Tretall Pølsebane Lite vind0.6730
Tretall Pølsebane Mellomvind0.9079
Tretall Pølsebane Mye vind1.0488
Distanseseilas ett tall1.1038
Enkeltall Motvind1.0308
Enkeltall Medvind1.0764
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low694.90.8634
Triple Number Coastal/Long Distance Medium540.31.1104
Triple Number Coastal/Long Distance High484.61.2381
Triple Number Windward/Leeward Low891.50.6730
Triple Number Windward/Leeward Medium660.90.9079
Triple Number Windward/Leeward High572.11.0488
Coastal/Long Distance591.01.0152
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind582.11.0308
Predominantly Downwind557.41.0764
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore539.81.1116
Cape Doctor Coastal460.31.3036
Triple Number Coastal/Long Distance Low694.90.8634
Triple Number Coastal/Long Distance Medium540.31.1104
Triple Number Coastal/Long Distance High484.61.2381
Triple Number Windward/Leeward Low891.50.6730
Triple Number Windward/Leeward Medium660.90.9079
Triple Number Windward/Leeward High572.11.0488
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8634
Triple Number Coastal/Long Distance Medium1.1104
Triple Number Coastal/Long Distance High1.2381
Triple Number Windward/Leeward Low0.6730
Triple Number Windward/Leeward Medium0.9079
Triple Number Windward/Leeward High1.0488
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8634
Triple Number Coastal/Long Distance Medium1.1104
Triple Number Coastal/Long Distance High1.2381
Triple Number Windward/Leeward Low0.6730
Triple Number Windward/Leeward Medium0.9079
Triple Number Windward/Leeward High1.0488
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance591.01.0152
Triple Number Coastal/Long Distance Low694.90.8634
Triple Number Coastal/Long Distance Medium540.31.1104
Triple Number Coastal/Long Distance High484.61.2381
Triple Number Windward/Leeward Low891.50.6730
Triple Number Windward/Leeward Medium660.90.9079
Triple Number Windward/Leeward High572.11.0488
Predominantly Upwind582.11.0308
Predominantly Downwind557.41.0764
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance984.9753.1630.5558.7521.6493.6451.9438.0
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance591.01.0152
Triple Number Coastal/Long Distance Low694.90.8634
Triple Number Coastal/Long Distance Medium540.31.1104
Triple Number Coastal/Long Distance High484.61.2381
Triple Number Windward/Leeward Low891.50.6730
Triple Number Windward/Leeward Medium660.90.9079
Triple Number Windward/Leeward High572.11.0488
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance984.9753.1630.5558.7521.6493.6451.9438.0
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low695.00.8634
Triple Number AP Medium540.41.1103
Triple Number AP High484.61.2381
Triple Number Windward/Leeward Low891.50.6730
Triple Number Windward/Leeward Medium660.90.9079
Triple Number Windward/Leeward High572.11.0488
Single Number Predominant Upwind580.71.0332
Single Number Predominant Reaching523.41.1463
Single Number Predominant Downwind558.11.0752
Predominant Upwind - Low754.70.7951
Predominant Upwind - Low/Med636.30.9429
Predominant Upwind - Medium563.81.0642
Predominant Upwind - Med/High527.21.1381
Predominant Upwind - High512.21.1713
Predominant Downwind Low770.10.7791
Predominant Downwind Low/Med630.00.9524
Predominant Downwind Medium537.91.1155
Predominant Downwind Med/High481.51.2462
Predominant Downwind High451.21.3297
Predominant Reaching Low683.00.8784
Predominant Reaching Low/Med575.41.0427
Predominant Reaching Medium508.51.1800
Predominant Reaching Med/High470.21.2760
Predominant Reaching High449.01.3364
SA/DSPL Upwind21.97SA/DSPL Downwind35.06
Scoring OptionTODTOT
5-Band Windward/Leeward Low942.20.6368
5-Band Windward/Leeward Low/Med766.00.7833
5-Band Windward/Leeward Medium648.80.9248
5-Band Windward/Leeward Med/High580.51.0336
5-Band Windward/Leeward High551.91.0872
Windward/Leeward 60-40 Low942.20.6368
Windward/Leeward 60-40 Low/Med770.80.7784
Windward/Leeward 60-40 Medium658.60.9110
Windward/Leeward 60-40 Med/High596.11.0066
Windward/Leeward 60-40 High571.31.0503
5-Band AP Low730.70.8211
5-Band AP Low/Med609.50.9845
5-Band AP Medium532.91.1260
5-Band AP Med/High490.41.2235
5-Band AP High470.21.2760
5-Band SF Bay Tour - Low893.70.6714
5-Band SF Bay Tour - Low/Med731.20.8206
5-Band SF Bay Tour - Medium625.70.9589
5-Band SF Bay Tour - Med/High567.41.0574
5-Band SF Bay Tour - High542.51.1059
Chicago-Mac Upwind1.0127
Chicago-Mac All Purpose1.0315
Chicago-Mac Downwind1.0571
Bayview-Mac Cove Island0.9619
Bayview-Mac Shore0.9735
Harvest Moon Regatta478.91.2528

Club
Certificate
2024

Boat

MOSTLY HARMLESS

USA 25668

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassBENETEAU 42MeasurementHINPlan reviewHull constructionSolidCarbon RudderNoLight stanchionsNoTrim tabNo
LOA12.800Max. Beam3.982Draft2.264Displacement10,319Wetted area34.33IMS L10.728LSM010.595Acc. length12.800Sink (kg/mm) 24.33
VCGD-0.089VCGM-0.137RM Rated (kg·m) 243.3Limit of positive stability(°) N/AStability IndexN/ADefault crew weight747Declared crew weight800
PROPELLER
Propeller TypeFeathering 3 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.468PBW0.150PIPA0.0054
PSD0.031PHD0.060PHL0.147
PSA21.8°ESL0.955
ST10.023ST20.092ST30.111
ST40.056ST50.205
RIG
Forestay tensionAftInner stayAdjustableMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunners/Checkstays1Spreaders2Rotating mastNo
P14.996IG16.895ISP16.895MDT10.158MDL10.230MDT20.152MDL20.193TL2.250MW0.190GO0.200
E4.450J5.099BAS1.655FSD0.045SFJ0.000SPL5.201WPLTPS5.099BD0.200MWT249.00MCG5.460
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered243.3Flotation Date23/07/2021
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible

Club
Certificate
2024

Boat

MOSTLY HARMLESS

USA 25668

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment25613360.160.951.682.873.7439.78fiberpath
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment25613450.060.971.933.865.857.8916.69NoNo 65.18Fiberpath
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment185752718.0215.4816.759.179.07101%127.72A2