Club
Certificate
2023

Boat

MAYHEM

USA 67

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 Angles43.0°40.8°39.0°37.6°37.0°37.0°37.0°
Beat VMG3.454.254.815.105.235.315.37
52°5.256.276.877.157.297.377.46
60°5.536.507.047.337.507.607.71
75°5.886.847.277.517.767.968.17
90°6.097.037.517.858.088.258.62
110°5.876.937.538.008.418.849.62
120°5.646.817.478.008.519.0310.18
135°5.076.317.147.698.248.8310.46
150°4.295.466.437.097.517.908.97
Run VMG3.714.735.576.146.506.967.77
Gybe Angles143.5°147.5°149.2°150.1°149.8°173.9°142.6°

APH: 546.2

CDL: 9.259

GPH: 612.9

CertNo: US7390

BOAT
ClassJ 105DesignerJohnstoneBuilderTPIAge date01/1993Series date01/1991Offset fileH204+.offData fileUSA67
HULL
Length Overall10.570 mMaximum Beam3.346 mDraft2.003 mDisplacement3,889 kgDLR4.6347IMS DivisionPerformanceDynamic Allowance0.180%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameter0.374m
CREW
Maximum weight458 kgMinimum weight344 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail33.6634.35Headsail Luffed25.3925.39Headsail FlyingSymmetricAsymmetric88.8688.86 (2 asymmetric(s) with SHW/SFL < 85%)
STORM SAIL AREAS (m²)
Trysail9.86Storm Jib7.66Heavy Weather Jib20.66
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  03330002N7CIssued on 30/05/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

MAYHEM

USA 67

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 VMG1043.6847.8748.8705.5688.0678.1670.8
52°685.2574.3524.2503.5494.2488.4482.7
60°650.8553.5511.2491.3480.3473.9466.7
75°612.7526.2495.3479.7463.7452.5440.5
90°591.1511.9479.1458.6445.8436.1417.7
110°612.8519.4478.1450.2428.1407.4374.1
120°638.8528.6482.1450.0422.9398.7353.8
135°710.2570.9504.5468.0436.7407.6344.1
150°839.7659.5559.7507.5479.4455.9401.3
Run VMG969.6761.5646.3585.9553.5517.6463.4
Selected Courses
Windward / Leeward1006.6804.7697.5645.7620.7597.8567.1
All purpose770.5630.9562.8527.8507.5490.6462.8
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward676.30.8872
All purpose546.21.0985
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low700.70.8563
Triple Number Coastal/Long Distance Medium542.91.1051
Triple Number Coastal/Long Distance High484.41.2386
Triple Number Windward/Leeward Low905.70.6625
Triple Number Windward/Leeward Medium669.90.8956
Triple Number Windward/Leeward High592.11.0134
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance594.41.0095
Triple Number Coastal/Long Distance Low700.70.8563
Triple Number Coastal/Long Distance Medium542.91.1051
Triple Number Coastal/Long Distance High484.41.2386
Triple Number Windward/Leeward Low905.70.6625
Triple Number Windward/Leeward Medium669.90.8956
Triple Number Windward/Leeward High592.11.0134
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1002.9756.4631.0562.7526.9495.7442.2
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7803
Downwind "popa"0.9338
70% up, 30% down "Ilhabela"0.8208
30% up, 70% down "Ilhabela-inverso"0.8818
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low700.70.8563
Triple Number Coastal/Long Distance Medium542.91.1051
Triple Number Coastal/Long Distance High484.41.2386
Triple Number Windward/Leeward Low905.70.6625
Triple Number Windward/Leeward Medium669.90.8956
Triple Number Windward/Leeward High592.11.0134
Predominantly Upwind591.61.0142
Predominantly Downwind553.41.0843
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low700.70.8563
Triple Number All Purpose Medium542.91.1051
Triple Number All Purpose High484.41.2386
Triple Number Windward/Leeward Low905.70.6625
Triple Number Windward/Leeward Medium669.90.8956
Triple Number Windward/Leeward High592.11.0134
Predominantly Upwind591.61.0142
Predominantly Downwind553.41.0843
Predominantly Upwind Low786.60.7627
Predominantly Upwind Medium610.90.9822
Predominantly Upwind High569.01.0545
Predominantly Downwind Low760.60.7888
Predominantly Downwind Medium550.51.0900
Predominantly Downwind High463.51.2945
Chicago-Mac Upwind0.9966
Chicago-Mac All Purpose1.0290
Chicago-Mac Downwind1.0664
Bayview-Mac Cove Island0.9550
Bayview-Mac Shore0.9623
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching515.31.1643
Predominantly Reaching Low628.30.9550
Predominantly Reaching Medium510.81.1746
Predominantly Reaching High448.31.3384
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low991.10.6054
5-Band Low / Medium826.20.7262
5-Band Medium659.40.9099
5-Band Medium / High600.60.9990
5-Band High572.41.0481
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance594.41.0095
Triple Number Coastal/Long Distance Low700.70.8563
Triple Number Coastal/Long Distance Medium542.91.1051
Triple Number Coastal/Long Distance High484.41.2386
Triple Number Windward/Leeward Low905.70.6625
Triple Number Windward/Leeward Medium669.90.8956
Triple Number Windward/Leeward High592.11.0134
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1002.9756.4631.0562.7526.9495.7442.2
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance594.41.0095
Triple Number Coastal/Long Distance Low700.70.8563
Triple Number Coastal/Long Distance Medium542.91.1051
Triple Number Coastal/Long Distance High484.41.2386
Triple Number Windward/Leeward Low905.70.6625
Triple Number Windward/Leeward Medium669.90.8956
Triple Number Windward/Leeward High592.11.0134
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1002.9756.4631.0562.7526.9495.7442.2
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance594.4
Triple Number Coastal/Long Distance Low700.7
Triple Number Coastal/Long Distance Medium542.9
Triple Number Coastal/Long Distance High484.4
Triple Number Windward/Leeward Low905.7
Triple Number Windward/Leeward Medium669.9
Triple Number Windward/Leeward High592.1
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1002.9756.4631.0562.7526.9495.7442.2
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance594.41.0095
Triple Number Coastal/Long Distance Low700.70.8563
Triple Number Coastal/Long Distance Medium542.91.1051
Triple Number Coastal/Long Distance High484.41.2386
Triple Number Windward/Leeward Low905.70.6625
Triple Number Windward/Leeward Medium669.90.8956
Triple Number Windward/Leeward High592.11.0134
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1002.9756.4631.0562.7526.9495.7442.2
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)594.41.0095
Triple Number Coastal/Long Distance Low700.70.8563
Triple Number Coastal/Long Distance Medium542.91.1051
Triple Number Coastal/Long Distance High484.41.2386
Triple Number Windward/Leeward Low905.70.6625
Triple Number Windward/Leeward Medium669.90.8956
Triple Number Windward/Leeward High592.11.0134
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1002.9756.4631.0562.7526.9495.7442.2
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low700.70.8563
Triple Number Coastal/Long Distance Medium542.91.1051
Triple Number Coastal/Long Distance High484.41.2386
Triple Number Windward/Leeward Low905.70.6625
Triple Number Windward/Leeward Medium669.90.8956
Triple Number Windward/Leeward High592.11.0134
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8563
Triple Number Coastal/Long Distance Medium1.1051
Triple Number Coastal/Long Distance High1.2386
Triple Number Windward/Leeward Low0.6625
Triple Number Windward/Leeward Medium0.8956
Triple Number Windward/Leeward High1.0134
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1002.9756.4631.0562.7526.9495.7442.2
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance594.41.0095
Triple Number Coastal/Long Distance Low700.70.8563
Triple Number Coastal/Long Distance Medium542.91.1051
Triple Number Coastal/Long Distance High484.41.2386
Triple Number Windward/Leeward Low905.70.6625
Triple Number Windward/Leeward Medium669.90.8956
Triple Number Windward/Leeward High592.11.0134
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1002.9756.4631.0562.7526.9495.7442.2
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low700.70.8563
Triple Number Coastal/Long Distance Medium542.91.1051
Triple Number Coastal/Long Distance High484.41.2386
Triple Number Windward/Leeward Low905.70.6625
Triple Number Windward/Leeward Medium669.90.8956
Triple Number Windward/Leeward High592.11.0134
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance594.41.0095
Triple Number Coastal/Long Distance Low700.70.8563
Triple Number Coastal/Long Distance Medium542.91.1051
Triple Number Coastal/Long Distance High484.41.2386
Triple Number Windward/Leeward Low905.70.6625
Triple Number Windward/Leeward Medium669.90.8956
Triple Number Windward/Leeward High592.11.0134
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1002.9756.4631.0562.7526.9495.7442.2
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low905.70.6625
Triple Number Windward/Leeward Medium669.90.8956
Triple Number Windward/Leeward High592.11.0134
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1002.9756.4631.0562.7526.9495.7442.2
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low700.7
Triple Number Coastal/Long Distance Medium542.9
Triple Number Coastal/Long Distance High484.4
Triple Number Windward/Leeward Low905.7
Triple Number Windward/Leeward Medium669.9
Triple Number Windward/Leeward High592.1
Predominantly Upwind591.6
Predominantly Downwind553.4
Predominantly Reaching528.0
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance594.41.0095
Triple Number Coastal/Long Distance Low700.70.8563
Triple Number Coastal/Long Distance Medium542.91.1051
Triple Number Coastal/Long Distance High484.41.2386
Triple Number Windward/Leeward Low905.70.6625
Triple Number Windward/Leeward Medium669.90.8956
Triple Number Windward/Leeward High592.11.0134
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1002.9756.4631.0562.7526.9495.7442.2
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8563
Triple Number Coastal/Long Distance Medium1.1051
Triple Number Coastal/Long Distance High1.2386
Triple Number Windward/Leeward Low0.6625
Triple Number Windward/Leeward Medium0.8956
Triple Number Windward/Leeward High1.0134
Coastal/Long Distance1.0095
Predominantly Upwind1.0142
Predominantly Downwind1.0843
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.8563
Tretall Distanseseilas Mellomvind1.1051
Tretall Distanseseilas Mye vind1.2386
Tretall Pølsebane Lite vind0.6625
Tretall Pølsebane Mellomvind0.8956
Tretall Pølsebane Mye vind1.0134
Distanseseilas ett tall (OSN 8-16kn)1.0095
Distanseseilas ett tall (APH 6-20kn)1.0985
Enkeltall Motvind1.0142
Enkeltall Medvind1.0843
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low700.70.8563
Triple Number Coastal/Long Distance Medium542.91.1051
Triple Number Coastal/Long Distance High484.41.2386
Triple Number Windward/Leeward Low905.70.6625
Triple Number Windward/Leeward Medium669.90.8956
Triple Number Windward/Leeward High592.11.0134
Coastal/Long Distance594.41.0095
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind591.61.0142
Predominantly Downwind553.41.0843
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore576.31.0411
Cape Doctor Coastal471.11.2735
Triple Number Coastal/Long Distance Low700.70.8563
Triple Number Coastal/Long Distance Medium542.91.1051
Triple Number Coastal/Long Distance High484.41.2386
Triple Number Windward/Leeward Low905.70.6625
Triple Number Windward/Leeward Medium669.90.8956
Triple Number Windward/Leeward High592.11.0134
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8563
Triple Number Coastal/Long Distance Medium1.1051
Triple Number Coastal/Long Distance High1.2386
Triple Number Windward/Leeward Low0.6625
Triple Number Windward/Leeward Medium0.8956
Triple Number Windward/Leeward High1.0134
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8563
Triple Number Coastal/Long Distance Medium1.1051
Triple Number Coastal/Long Distance High1.2386
Triple Number Windward/Leeward Low0.6625
Triple Number Windward/Leeward Medium0.8956
Triple Number Windward/Leeward High1.0134
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance594.41.0095
Triple Number Coastal/Long Distance Low700.70.8563
Triple Number Coastal/Long Distance Medium542.91.1051
Triple Number Coastal/Long Distance High484.41.2386
Triple Number Windward/Leeward Low905.70.6625
Triple Number Windward/Leeward Medium669.90.8956
Triple Number Windward/Leeward High592.11.0134
Predominantly Upwind591.61.0142
Predominantly Downwind553.41.0843
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1002.9756.4631.0562.7526.9495.7442.2
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance594.41.0095
Triple Number Coastal/Long Distance Low700.70.8563
Triple Number Coastal/Long Distance Medium542.91.1051
Triple Number Coastal/Long Distance High484.41.2386
Triple Number Windward/Leeward Low905.70.6625
Triple Number Windward/Leeward Medium669.90.8956
Triple Number Windward/Leeward High592.11.0134
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1002.9756.4631.0562.7526.9495.7442.2
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low700.70.8563
Triple Number All Purpose Medium542.91.1051
Triple Number All Purpose High484.41.2386
Triple Number Windward/Leeward Low905.70.6625
Triple Number Windward/Leeward Medium669.90.8956
Triple Number Windward/Leeward High592.11.0134
Predominantly Upwind591.61.0142
Predominantly Downwind553.41.0843
Predominantly Upwind Low786.60.7627
Predominantly Upwind Medium610.90.9822
Predominantly Upwind High569.01.0545
Predominantly Downwind Low760.60.7888
Predominantly Downwind Medium550.51.0900
Predominantly Downwind High463.51.2945
Chicago-Mac Upwind0.9966
Chicago-Mac All Purpose1.0290
Chicago-Mac Downwind1.0664
Bayview-Mac Cove Island0.9550
Bayview-Mac Shore0.9623
Harvest Moon Regatta472.01.2711
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy572.11.0488
San Francisco Bay Medium659.50.9097
Predominantly Reaching515.31.1643
Predominantly Reaching Low628.30.9550
Predominantly Reaching Medium510.81.1746
Predominantly Reaching High448.31.3384
Windward/Leeward 60-40 Low913.60.6567
Windward/Leeward 60-40 Medium689.50.8701
Windward/Leeward 60-40 High621.20.9658
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low991.10.6054
5-Band Low / Medium826.20.7262
5-Band Medium659.40.9099
5-Band Medium / High600.60.9990
5-Band High572.41.0481
ORC Ref  03330002N7CIssued on 30/05/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

MAYHEM

USA 67

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ 105Measurement08/06/2015HINPlan reviewHull constructionCoredCarbon RudderNoLight stanchionsNoTrim tabNo
LOA10.570Max. Beam3.346Draft2.003Displacement3,889Wetted area22.69IMS L9.557LSM09.431Acc. length10.570Sink (kg/mm) 17.04
VCGD-0.078VCGM-0.094RM Rated (kg·m) 98.2Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.374PBW0.098PIPA0.0042
PSD0.024PHD0.068PHL0.137
PSA16.5°ESL0.914
ST10.018ST20.091ST30.091
ST40.046ST50.186
RIG
Forestay tensionAftInner stayNone FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders2Rotating mastNo
P12.650IG12.370ISP12.750MDT10.103MDL10.170MDT2MDL2TL2.000MW0.172GO0.172
E4.450J4.110BAS1.540FSD0.030SFJSPLWPLTPS5.980BD0.130MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.078Flotation Date10/08/2021MeasurerComment
SFFP0.966FFMFF1.099LCFcl5.866SG
SAFP10.056FAMFA0.759LCFsh6.105HBI0.921
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03330002N7CIssued on 30/05/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

MAYHEM

USA 67

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentMain0.180.901.682.8833.6619/03/2021OUS141328-001
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentJib0.082.024.1512.15YesNo 25.3919/03/2021OUS141328-002
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentAP15.0912.1413.627.549.0084%88.8619/03/2021OUS141328-005Reacher13.5711.4612.525.817.6576%64.4319/01/2023#12-0
ORC Ref  03330002N7CIssued on 30/05/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org