Double HandedClub Certificate2025
Little MavGBR 9781R
Rated boat velocities in knots
Wind Velocity 4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat Angles43.6°43.6°41.4°40.4°39.9°39.4°39.2°39.3°40.7°
Beat VMG2.453.384.094.544.774.884.944.984.87
52°3.825.156.086.626.886.997.067.127.07
60°4.075.426.326.837.087.207.277.357.33
75°4.245.616.506.997.267.447.557.707.76
90°4.225.696.677.087.327.557.748.028.20
110°4.385.896.927.407.727.928.108.428.70
120°4.275.796.867.407.788.118.398.829.24
135°3.745.236.427.157.598.008.409.3510.76
150°3.134.425.556.497.147.537.898.629.73
Run VMG2.713.834.805.626.226.636.987.618.43
Gybe Angles143.5°143.5°147.8°149.6°153.0°157.7°161.5°161.2°141.7°
APH ToD:565.3CDL: 8.689APH ToT: 1.0615CertNo:
BOAT
ClassJ-110DesignerJOHNSTONEBuilderJ-COMPOSITESAge date01/1995Series date01/1992Offset fileJ110.offData fileGBR9781R
HULL
Length Overall10.970 mMaximum Beam3.368 mDraft1.778 mDisplacement5,712 kgDLR6.7376IMS DivisionCruiser/RacerDynamic Allowance0.230%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.410m
CREW
Maximum weight200 kg(declared)Minimum weight120 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension0.00 m
SAIL AREAS (m²)
MeasuredRatedMainsail34.5835.27Headsail Luffed29.3529.35Headsail FlyingSymmetricAsymmetric110.90110.90 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail10.13Storm Jib9.97Heavy Weather Jib26.92
SAIL LIMITS
Headsails5Spinnakers4
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.
Double HandedClub Certificate2025
Little MavGBR 9781R
Time Allowances in secs/NM
Wind Velocity 4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat VMG1468.91066.5881.0793.3754.9737.5728.1722.2738.8
52°941.3699.5592.6543.6523.3514.9510.0505.4509.4
60°885.0664.4569.5527.1508.8500.2495.4490.1490.9
75°848.4641.3554.0514.9495.6484.1476.6467.7463.9
90°852.4633.0539.6508.2492.1476.9465.3449.1439.2
110°822.2611.1520.6486.3466.5454.4444.2427.4413.8
120°842.7621.7525.1486.8463.0443.8429.2408.2389.8
135°962.8688.6561.2503.6474.0450.0428.4385.0334.5
150°1150.8813.8649.0554.7504.4477.9456.3417.6369.9
Run VMG1329.4939.7749.4640.5579.1543.2515.6473.1427.1
Selected Courses
Windward / Leeward1398.91003.1815.2716.9667.0640.4621.8597.7582.9
All purpose1064.1774.9642.3579.1547.5529.0515.7496.4482.7
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward695.30.8630
All purpose565.31.0615
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low708.60.8467
Triple Number Coastal/Long Distance Medium561.31.0689
Triple Number Coastal/Long Distance High511.81.1723
Triple Number Windward/Leeward Low909.10.6600
Triple Number Windward/Leeward Medium689.30.8704
Triple Number Windward/Leeward High617.40.9718
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance613.60.9778
Triple Number Coastal/Long Distance Low708.60.8467
Triple Number Coastal/Long Distance Medium561.31.0689
Triple Number Coastal/Long Distance High511.81.1723
Triple Number Windward/Leeward Low909.10.6600
Triple Number Windward/Leeward Medium689.30.8704
Triple Number Windward/Leeward High617.40.9718
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1472.0996.8766.3648.8584.0548.8520.3475.7461.6
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7390
Downwind "popa"0.9458
70% up, 30% down "Ilhabela"0.7909
30% up, 70% down "Ilhabela-inverso"0.8726
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low708.60.8467
Triple Number Coastal/Long Distance Medium561.31.0689
Triple Number Coastal/Long Distance High511.81.1723
Triple Number Windward/Leeward Low909.10.6600
Triple Number Windward/Leeward Medium689.30.8704
Triple Number Windward/Leeward High617.40.9718
Predominantly Upwind616.90.9727
Predominantly Downwind563.01.0657
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low708.60.8467
Triple Number AP Medium561.41.0688
Triple Number AP High511.81.1723
Triple Number Windward/Leeward Low948.30.6327
Triple Number Windward/Leeward Medium689.30.8704
Triple Number Windward/Leeward High617.40.9718
Single Number Predominant Upwind641.70.9350
Single Number Predominant Reaching559.11.0732
Single Number Predominant Downwind586.31.0234
Predominant Upwind - Low866.60.6924
Predominant Upwind - Low/Med669.80.8957
Predominant Upwind - Medium599.61.0007
Predominant Upwind - Med/High566.31.0595
Predominant Upwind - High552.21.0865
Predominant Downwind Low833.20.7201
Predominant Downwind Low/Med627.20.9566
Predominant Downwind Medium545.81.0993
Predominant Downwind Med/High496.31.2089
Predominant Downwind High463.01.2958
Predominant Reaching Low756.40.7932
Predominant Reaching Low/Med586.91.0224
Predominant Reaching Medium525.71.1414
Predominant Reaching Med/High489.31.2262
Predominant Reaching High465.61.2885
SA/DSPL Upwind19.89SA/DSPL Downwind45.26
Scoring OptionTODTOT
5-Band Windward/Leeward Low1055.10.5686
5-Band Windward/Leeward Low/Med786.30.7630
5-Band Windward/Leeward Medium679.40.8831
5-Band Windward/Leeward Med/High624.70.9605
5-Band Windward/Leeward High599.31.0012
Windward/Leeward 60-40 Low1068.30.5617
Windward/Leeward 60-40 Low/Med800.80.7492
Windward/Leeward 60-40 Medium696.80.8610
Windward/Leeward 60-40 Med/High645.90.9289
Windward/Leeward 60-40 High624.70.9605
5-Band AP Low775.10.7741
5-Band AP Low/Med625.50.9592
5-Band AP Medium554.91.0813
5-Band AP Med/High517.41.1597
5-Band AP High497.41.2063
5-Band SF Bay Tour - Low915.20.6556
5-Band SF Bay Tour - Low/Med754.00.7958
5-Band SF Bay Tour - Medium656.80.9136
5-Band SF Bay Tour - Med/High607.50.9876
5-Band SF Bay Tour - High584.01.0274
Chicago-Mac Upwind0.9090
Chicago-Mac All Purpose0.9507
Chicago-Mac Downwind0.9904
Bayview-Mac Cove Island0.7073
Bayview-Mac Shore0.7111
Harvest Moon Regatta492.51.2182
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance613.60.9778
Triple Number Coastal/Long Distance Low708.60.8467
Triple Number Coastal/Long Distance Medium561.31.0689
Triple Number Coastal/Long Distance High511.81.1723
Triple Number Windward/Leeward Low909.10.6600
Triple Number Windward/Leeward Medium689.30.8704
Triple Number Windward/Leeward High617.40.9718
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1472.0996.8766.3648.8584.0548.8520.3475.7461.6
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance613.60.9778
Triple Number Coastal/Long Distance Low708.60.8467
Triple Number Coastal/Long Distance Medium561.31.0689
Triple Number Coastal/Long Distance High511.81.1723
Triple Number Windward/Leeward Low909.10.6600
Triple Number Windward/Leeward Medium689.30.8704
Triple Number Windward/Leeward High617.40.9718
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1472.0996.8766.3648.8584.0548.8520.3475.7461.6
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance613.6
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1472.0996.8766.3648.8584.0548.8520.3475.7461.6
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low708.60.8467
Triple Number Coastal/Long Distance Medium561.31.0689
Triple Number Coastal/Long Distance High511.81.1723
Triple Number Windward/Leeward Low909.10.6600
Triple Number Windward/Leeward Medium689.30.8704
Triple Number Windward/Leeward High617.40.9718
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating608.90.9854
FinRating, kevyt tuuli1033.50.9676
FinRating, kova tuuli501.10.9978
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low708.60.8467
Triple Number Coastal/Long Distance Medium561.31.0689
Triple Number Coastal/Long Distance High511.81.1723
Triple Number Windward/Leeward Low909.10.6600
Triple Number Windward/Leeward Medium689.30.8704
Triple Number Windward/Leeward High617.40.9718
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9778
Triple Number Coastal/Long Distance Low0.8467
Triple Number Coastal/Long Distance Medium1.0689
Triple Number Coastal/Long Distance High1.1723
Triple Number Windward/Leeward Low0.6600
Triple Number Windward/Leeward Medium0.8704
Triple Number Windward/Leeward High0.9718
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1472.0996.8766.3648.8584.0548.8520.3475.7461.6
For information
General Purpose Handicap (GPH)630.4
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance613.60.9778
Triple Number Coastal/Long Distance Low708.60.8467
Triple Number Coastal/Long Distance Medium561.31.0689
Triple Number Coastal/Long Distance High511.81.1723
Triple Number Windward/Leeward Low909.10.6600
Triple Number Windward/Leeward Medium689.30.8704
Triple Number Windward/Leeward High617.40.9718
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1472.0996.8766.3648.8584.0548.8520.3475.7461.6
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low708.60.8467
Triple Number Coastal/Long Distance Medium561.31.0689
Triple Number Coastal/Long Distance High511.81.1723
Triple Number Windward/Leeward Low909.10.6600
Triple Number Windward/Leeward Medium689.30.8704
Triple Number Windward/Leeward High617.40.9718
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance613.60.9778
Triple Number Coastal/Long Distance Low708.60.8467
Triple Number Coastal/Long Distance Medium561.31.0689
Triple Number Coastal/Long Distance High511.81.1723
Triple Number Windward/Leeward Low909.10.6600
Triple Number Windward/Leeward Medium689.30.8704
Triple Number Windward/Leeward High617.40.9718
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1472.0996.8766.3648.8584.0548.8520.3475.7461.6
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance613.60.9778
Triple Number Coastal/Long Distance Low708.60.8467
Triple Number Coastal/Long Distance Medium561.31.0689
Triple Number Coastal/Long Distance High511.81.1723
Triple Number Windward/Leeward Low909.10.6600
Triple Number Windward/Leeward Medium689.30.8704
Triple Number Windward/Leeward High617.40.9718
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1472.0996.8766.3648.8584.0548.8520.3475.7461.6
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low708.6
Triple Number Coastal/Long Distance Medium561.3
Triple Number Coastal/Long Distance High511.8
Triple Number Windward/Leeward Low909.1
Triple Number Windward/Leeward Medium689.3
Triple Number Windward/Leeward High617.4
Predominantly Upwind616.9
Predominantly Downwind563.0
Predominantly Reaching544.3
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance613.60.9778
Triple Number Coastal/Long Distance Low708.60.8467
Triple Number Coastal/Long Distance Medium561.31.0689
Triple Number Coastal/Long Distance High511.81.1723
Triple Number Windward/Leeward Low909.10.6600
Triple Number Windward/Leeward Medium689.30.8704
Triple Number Windward/Leeward High617.40.9718
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1472.0996.8766.3648.8584.0548.8520.3475.7461.6
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8467
Triple Number Coastal/Long Distance Medium1.0689
Triple Number Coastal/Long Distance High1.1723
Triple Number Windward/Leeward Low0.6600
Triple Number Windward/Leeward Medium0.8704
Triple Number Windward/Leeward High0.9718
Coastal/Long Distance0.9778
Predominantly Upwind0.9727
Predominantly Downwind1.0657
For information
General Purpose Handicap (GPH)630.4
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0615
Distanseseilas Trippeltall svak vind0.8467
Distanseseilas Trippeltall mellomvind1.0689
Distanseseilas Trippeltall sterk vind1.1723
Pølsebane Trippeltall svak vind0.6600
Pølsebane Trippeltall mellomvind0.8704
Pølsebane Trippeltall sterk vind0.9718
Motvind Singeltall0.9727
Medvind Singeltall1.0657
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low708.60.8467
Triple Number Coastal/Long Distance Medium561.31.0689
Triple Number Coastal/Long Distance High511.81.1723
Triple Number Windward/Leeward Low909.10.6600
Triple Number Windward/Leeward Medium689.30.8704
Triple Number Windward/Leeward High617.40.9718
Coastal/Long Distance613.60.9778
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind616.90.9727
Predominantly Downwind563.01.0657
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore587.41.0215
Cape Doctor Coastal486.81.2325
Triple Number Coastal/Long Distance Low708.60.8467
Triple Number Coastal/Long Distance Medium561.31.0689
Triple Number Coastal/Long Distance High511.81.1723
Triple Number Windward/Leeward Low909.10.6600
Triple Number Windward/Leeward Medium689.30.8704
Triple Number Windward/Leeward High617.40.9718
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8467
Triple Number Coastal/Long Distance Medium1.0689
Triple Number Coastal/Long Distance High1.1723
Triple Number Windward/Leeward Low0.6600
Triple Number Windward/Leeward Medium0.8704
Triple Number Windward/Leeward High0.9718
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8467
Triple Number Coastal/Long Distance Medium1.0689
Triple Number Coastal/Long Distance High1.1723
Triple Number Windward/Leeward Low0.6600
Triple Number Windward/Leeward Medium0.8704
Triple Number Windward/Leeward High0.9718
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance613.60.9778
Triple Number Coastal/Long Distance Low708.60.8467
Triple Number Coastal/Long Distance Medium561.31.0689
Triple Number Coastal/Long Distance High511.81.1723
Triple Number Windward/Leeward Low909.10.6600
Triple Number Windward/Leeward Medium689.30.8704
Triple Number Windward/Leeward High617.40.9718
Predominantly Upwind616.90.9727
Predominantly Downwind563.01.0657
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1472.0996.8766.3648.8584.0548.8520.3475.7461.6
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance613.60.9778
Triple Number Coastal/Long Distance Low708.60.8467
Triple Number Coastal/Long Distance Medium561.31.0689
Triple Number Coastal/Long Distance High511.81.1723
Triple Number Windward/Leeward Low909.10.6600
Triple Number Windward/Leeward Medium689.30.8704
Triple Number Windward/Leeward High617.40.9718
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1472.0996.8766.3648.8584.0548.8520.3475.7461.6
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low708.60.8467
Triple Number AP Medium561.41.0688
Triple Number AP High511.81.1723
Triple Number Windward/Leeward Low948.30.6327
Triple Number Windward/Leeward Medium689.30.8704
Triple Number Windward/Leeward High617.40.9718
Single Number Predominant Upwind641.70.9350
Single Number Predominant Reaching559.11.0732
Single Number Predominant Downwind586.31.0234
Predominant Upwind - Low866.60.6924
Predominant Upwind - Low/Med669.80.8957
Predominant Upwind - Medium599.61.0007
Predominant Upwind - Med/High566.31.0595
Predominant Upwind - High552.21.0865
Predominant Downwind Low833.20.7201
Predominant Downwind Low/Med627.20.9566
Predominant Downwind Medium545.81.0993
Predominant Downwind Med/High496.31.2089
Predominant Downwind High463.01.2958
Predominant Reaching Low756.40.7932
Predominant Reaching Low/Med586.91.0224
Predominant Reaching Medium525.71.1414
Predominant Reaching Med/High489.31.2262
Predominant Reaching High465.61.2885
SA/DSPL Upwind19.89SA/DSPL Downwind45.26
Scoring OptionTODTOT
5-Band Windward/Leeward Low1055.10.5686
5-Band Windward/Leeward Low/Med786.30.7630
5-Band Windward/Leeward Medium679.40.8831
5-Band Windward/Leeward Med/High624.70.9605
5-Band Windward/Leeward High599.31.0012
Windward/Leeward 60-40 Low1068.30.5617
Windward/Leeward 60-40 Low/Med800.80.7492
Windward/Leeward 60-40 Medium696.80.8610
Windward/Leeward 60-40 Med/High645.90.9289
Windward/Leeward 60-40 High624.70.9605
5-Band AP Low775.10.7741
5-Band AP Low/Med625.50.9592
5-Band AP Medium554.91.0813
5-Band AP Med/High517.41.1597
5-Band AP High497.41.2063
5-Band SF Bay Tour - Low915.20.6556
5-Band SF Bay Tour - Low/Med754.00.7958
5-Band SF Bay Tour - Medium656.80.9136
5-Band SF Bay Tour - Med/High607.50.9876
5-Band SF Bay Tour - High584.01.0274
Chicago-Mac Upwind0.9090
Chicago-Mac All Purpose0.9507
Chicago-Mac Downwind0.9904
Bayview-Mac Cove Island0.7073
Bayview-Mac Shore0.7111
Harvest Moon Regatta492.51.2182
Double HandedClub Certificate2025
Little MavGBR 9781R
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ-110MeasurementHINFR-JCF11012D898Plan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA10.970Max. Beam3.368Draft1.778Displacement5,712Wetted area24.65IMS L9.552LSM09.464Acc. length10.946Sink (kg/mm) 18.53
VCGD0.031VCGM0.000RM Rated (kg·m) 118.5Limit of positive stability(°) N/AStability IndexN/ADefault crew weight170Declared crew weight200
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.410PBWPIPA0.0007
EDLST1ST2
ST3ST4ST5
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders2Rotating mastNo
P12.910IG14.120ISP14.700MDT10.102MDL10.186MDT2MDL2TLTaperMWGO
E4.480J4.015BAS1.580FSD0.029SFJSPL0.000WPLTPS5.680BDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered118.5Flotation Date11/08/2020
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Double HandedClub Certificate2025
Little MavGBR 9781R
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment20230.150.861.652.903.8734.58
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment20230.080.561.052.063.114.1114.14NoNo 29.35
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment202316.6512.8014.739.098.83103%110.900116.5614.3015.438.508.00106%108.01Nieuwe gennaker
CRUISER/RACER REQUIREMENTS*
Accommodation length10.9 mTable area0.55 m²Headroom1.76 mMinimum number of berths5Personal gear stowage0.20 m³Fresh water capacity123 lMinimum number of seats in cockpit5Food stowage0.30 m³Fuel capacity68 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.