Double HandedClub Certificate2025
GULLIVERNED 6636
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 Angles43.7°43.7°41.6°40.4°39.8°39.7°39.8°40.5°42.6°
Beat VMG2.443.354.054.464.634.694.714.664.46
52°3.805.116.016.506.706.786.826.836.73
60°4.055.386.246.716.917.007.057.097.03
75°4.235.566.396.867.127.287.377.497.53
90°4.135.476.356.867.187.427.627.868.02
110°3.544.875.906.637.077.407.718.258.54
120°3.284.595.676.466.967.317.638.278.96
135°2.814.035.115.986.627.047.388.028.75
150°2.323.424.455.346.096.667.067.698.33
Run VMG2.012.963.864.665.396.056.597.307.89
Gybe Angles146.2°146.2°151.0°156.6°164.9°172.7°178.1°179.5°179.5°
APH ToD:610.2CDL: 8.087APH ToT: 0.9833CertNo:15522
BOAT
ClassWinner 1010 x 1.80Designerv/d Stadt & PrtnrsBuilderD. RusAge date07/2005Series date04/1999Offset fileWINNER1010.offData fileNED6636
HULL
Length Overall10.100 mMaximum Beam3.320 mDraft1.788 mDisplacement4,597 kgDLR7.0668IMS DivisionCruiser/RacerDynamic Allowance0.250%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.380m
CREW
Maximum weight170 kg(default)Minimum weight120 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail30.7731.18Headsail Luffed33.8833.88Headsail FlyingSymmetricAsymmetric
STORM SAIL AREAS (m²)
Trysail9.63Storm Jib8.13Heavy Weather Jib21.95
SAIL LIMITS
Headsails5Spinnakers0
✱ Spinnaker pole aboard
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
GULLIVERNED 6636
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 VMG1478.21074.9889.9806.6778.3767.9764.5771.9807.0
52°946.7704.7598.9553.6537.4531.2528.0526.8534.5
60°888.6669.7577.0536.9520.6514.6511.0507.8512.0
75°851.3647.4563.0525.0505.7494.5488.6480.6478.3
90°872.7658.1566.7524.8501.6484.9472.5457.8448.9
110°1017.9739.6609.9543.1509.3486.4467.1436.1421.5
120°1096.6784.2635.3557.5517.4492.4471.6435.4402.0
135°1280.0892.5704.0601.8543.8511.1488.0448.8411.6
150°1553.91053.7808.3673.5590.7540.4510.2468.4432.1
Run VMG1792.71216.7932.7771.9667.6595.2546.7493.4456.2
Selected Courses
Windward / Leeward1632.41145.8911.3789.2722.9681.5655.6632.6631.6
All purpose1216.5873.0711.1629.4587.1562.2546.1527.3520.8
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward756.60.7930
All purpose610.20.9833
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low792.10.7575
Triple Number Coastal/Long Distance Medium605.30.9912
Triple Number Coastal/Long Distance High543.11.1048
Triple Number Windward/Leeward Low1028.50.5834
Triple Number Windward/Leeward Medium750.40.7996
Triple Number Windward/Leeward High653.50.9182
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance666.50.9002
Triple Number Coastal/Long Distance Low792.10.7575
Triple Number Coastal/Long Distance Medium605.30.9912
Triple Number Coastal/Long Distance High543.11.1048
Triple Number Windward/Leeward Low1028.50.5834
Triple Number Windward/Leeward Medium750.40.7996
Triple Number Windward/Leeward High653.50.9182
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1764.01152.9858.4710.7628.1584.3551.5500.7487.8
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7175
Downwind "popa"0.8040
70% up, 30% down "Ilhabela"0.7414
30% up, 70% down "Ilhabela-inverso"0.7759
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low792.10.7575
Triple Number Coastal/Long Distance Medium605.30.9912
Triple Number Coastal/Long Distance High543.11.1048
Triple Number Windward/Leeward Low1028.50.5834
Triple Number Windward/Leeward Medium750.40.7996
Triple Number Windward/Leeward High653.50.9182
Predominantly Upwind650.20.9228
Predominantly Downwind632.00.9493
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low792.10.7575
Triple Number AP Medium605.40.9911
Triple Number AP High543.11.1048
Triple Number Windward/Leeward Low1077.00.5571
Triple Number Windward/Leeward Medium750.40.7996
Triple Number Windward/Leeward High653.50.9182
Single Number Predominant Upwind676.80.8865
Single Number Predominant Reaching606.80.9887
Single Number Predominant Downwind664.90.9024
Predominant Upwind - Low922.70.6502
Predominant Upwind - Low/Med706.80.8489
Predominant Upwind - Medium629.20.9536
Predominant Upwind - Med/High595.11.0083
Predominant Upwind - High586.11.0237
Predominant Downwind Low1008.00.5952
Predominant Downwind Low/Med727.60.8246
Predominant Downwind Medium607.20.9882
Predominant Downwind Med/High535.31.1208
Predominant Downwind High500.61.1986
Predominant Reaching Low852.10.7041
Predominant Reaching Low/Med645.50.9296
Predominant Reaching Medium563.71.0643
Predominant Reaching Med/High518.61.1569
Predominant Reaching High497.01.2071
SA/DSPL Upwind23.27SA/DSPL Downwind23.27
Scoring OptionTODTOT
5-Band Windward/Leeward Low1209.60.4960
5-Band Windward/Leeward Low/Med875.00.6857
5-Band Windward/Leeward Medium737.00.8141
5-Band Windward/Leeward Med/High661.80.9066
5-Band Windward/Leeward High636.40.9428
Windward/Leeward 60-40 Low1193.60.5027
Windward/Leeward 60-40 Low/Med874.20.6863
Windward/Leeward 60-40 Medium747.50.8027
Windward/Leeward 60-40 Med/High682.90.8786
Windward/Leeward 60-40 High664.50.9030
5-Band AP Low888.60.6752
5-Band AP Low/Med687.90.8723
5-Band AP Medium596.81.0053
5-Band AP Med/High549.11.0927
5-Band AP High529.41.1333
5-Band SF Bay Tour - Low1032.10.5813
5-Band SF Bay Tour - Low/Med833.40.7199
5-Band SF Bay Tour - Medium710.90.8440
5-Band SF Bay Tour - Med/High648.00.9260
5-Band SF Bay Tour - High626.90.9571
Chicago-Mac Upwind0.8618
Chicago-Mac All Purpose0.8693
Chicago-Mac Downwind0.8668
Bayview-Mac Cove Island0.6271
Bayview-Mac Shore0.6346
Harvest Moon Regatta526.61.1393
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance666.50.9002
Triple Number Coastal/Long Distance Low792.10.7575
Triple Number Coastal/Long Distance Medium605.30.9912
Triple Number Coastal/Long Distance High543.11.1048
Triple Number Windward/Leeward Low1028.50.5834
Triple Number Windward/Leeward Medium750.40.7996
Triple Number Windward/Leeward High653.50.9182
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1764.01152.9858.4710.7628.1584.3551.5500.7487.8
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance666.50.9002
Triple Number Coastal/Long Distance Low792.10.7575
Triple Number Coastal/Long Distance Medium605.30.9912
Triple Number Coastal/Long Distance High543.11.1048
Triple Number Windward/Leeward Low1028.50.5834
Triple Number Windward/Leeward Medium750.40.7996
Triple Number Windward/Leeward High653.50.9182
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1764.01152.9858.4710.7628.1584.3551.5500.7487.8
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance666.5
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1764.01152.9858.4710.7628.1584.3551.5500.7487.8
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low792.10.7575
Triple Number Coastal/Long Distance Medium605.30.9912
Triple Number Coastal/Long Distance High543.11.1048
Triple Number Windward/Leeward Low1028.50.5834
Triple Number Windward/Leeward Medium750.40.7996
Triple Number Windward/Leeward High653.50.9182
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating (Coastal/Long Distance)666.50.9002
Triple Number Coastal/Long Distance Low792.10.7575
Triple Number Coastal/Long Distance Medium605.30.9912
Triple Number Coastal/Long Distance High543.11.1048
Triple Number Windward/Leeward Low1028.50.5834
Triple Number Windward/Leeward Medium750.40.7996
Triple Number Windward/Leeward High653.50.9182
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1764.01152.9858.4710.7628.1584.3551.5500.7487.8
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low792.10.7575
Triple Number Coastal/Long Distance Medium605.30.9912
Triple Number Coastal/Long Distance High543.11.1048
Triple Number Windward/Leeward Low1028.50.5834
Triple Number Windward/Leeward Medium750.40.7996
Triple Number Windward/Leeward High653.50.9182
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9002
Triple Number Coastal/Long Distance Low0.7575
Triple Number Coastal/Long Distance Medium0.9912
Triple Number Coastal/Long Distance High1.1048
Triple Number Windward/Leeward Low0.5834
Triple Number Windward/Leeward Medium0.7996
Triple Number Windward/Leeward High0.9182
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1764.01152.9858.4710.7628.1584.3551.5500.7487.8
For information
General Purpose Handicap (GPH)686.5
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance666.50.9002
Triple Number Coastal/Long Distance Low792.10.7575
Triple Number Coastal/Long Distance Medium605.30.9912
Triple Number Coastal/Long Distance High543.11.1048
Triple Number Windward/Leeward Low1028.50.5834
Triple Number Windward/Leeward Medium750.40.7996
Triple Number Windward/Leeward High653.50.9182
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1764.01152.9858.4710.7628.1584.3551.5500.7487.8
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low792.10.7575
Triple Number Coastal/Long Distance Medium605.30.9912
Triple Number Coastal/Long Distance High543.11.1048
Triple Number Windward/Leeward Low1028.50.5834
Triple Number Windward/Leeward Medium750.40.7996
Triple Number Windward/Leeward High653.50.9182
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance666.50.9002
Triple Number Coastal/Long Distance Low792.10.7575
Triple Number Coastal/Long Distance Medium605.30.9912
Triple Number Coastal/Long Distance High543.11.1048
Triple Number Windward/Leeward Low1028.50.5834
Triple Number Windward/Leeward Medium750.40.7996
Triple Number Windward/Leeward High653.50.9182
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1764.01152.9858.4710.7628.1584.3551.5500.7487.8
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance666.50.9002
Triple Number Coastal/Long Distance Low792.10.7575
Triple Number Coastal/Long Distance Medium605.30.9912
Triple Number Coastal/Long Distance High543.11.1048
Triple Number Windward/Leeward Low1028.50.5834
Triple Number Windward/Leeward Medium750.40.7996
Triple Number Windward/Leeward High653.50.9182
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1764.01152.9858.4710.7628.1584.3551.5500.7487.8
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low792.1
Triple Number Coastal/Long Distance Medium605.3
Triple Number Coastal/Long Distance High543.1
Triple Number Windward/Leeward Low1028.5
Triple Number Windward/Leeward Medium750.4
Triple Number Windward/Leeward High653.5
Predominantly Upwind650.2
Predominantly Downwind632.0
Predominantly Reaching597.2
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance666.50.9002
Triple Number Coastal/Long Distance Low792.10.7575
Triple Number Coastal/Long Distance Medium605.30.9912
Triple Number Coastal/Long Distance High543.11.1048
Triple Number Windward/Leeward Low1028.50.5834
Triple Number Windward/Leeward Medium750.40.7996
Triple Number Windward/Leeward High653.50.9182
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1764.01152.9858.4710.7628.1584.3551.5500.7487.8
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7575
Triple Number Coastal/Long Distance Medium0.9912
Triple Number Coastal/Long Distance High1.1048
Triple Number Windward/Leeward Low0.5834
Triple Number Windward/Leeward Medium0.7996
Triple Number Windward/Leeward High0.9182
Coastal/Long Distance0.9002
Predominantly Upwind0.9228
Predominantly Downwind0.9493
For information
General Purpose Handicap (GPH)686.5
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.9833
Distanseseilas Trippeltall svak vind0.7575
Distanseseilas Trippeltall mellomvind0.9912
Distanseseilas Trippeltall sterk vind1.1048
Pølsebane Trippeltall svak vind0.5834
Pølsebane Trippeltall mellomvind0.7996
Pølsebane Trippeltall sterk vind0.9182
Motvind Singeltall0.9228
Medvind Singeltall0.9493
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low792.10.7575
Triple Number Coastal/Long Distance Medium605.30.9912
Triple Number Coastal/Long Distance High543.11.1048
Triple Number Windward/Leeward Low1028.50.5834
Triple Number Windward/Leeward Medium750.40.7996
Triple Number Windward/Leeward High653.50.9182
Coastal/Long Distance666.50.9002
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind650.20.9228
Predominantly Downwind632.00.9493
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore631.90.9495
Cape Doctor Coastal522.81.1478
Triple Number Coastal/Long Distance Low792.10.7575
Triple Number Coastal/Long Distance Medium605.30.9912
Triple Number Coastal/Long Distance High543.11.1048
Triple Number Windward/Leeward Low1028.50.5834
Triple Number Windward/Leeward Medium750.40.7996
Triple Number Windward/Leeward High653.50.9182
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7575
Triple Number Coastal/Long Distance Medium0.9912
Triple Number Coastal/Long Distance High1.1048
Triple Number Windward/Leeward Low0.5834
Triple Number Windward/Leeward Medium0.7996
Triple Number Windward/Leeward High0.9182
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7575
Triple Number Coastal/Long Distance Medium0.9912
Triple Number Coastal/Long Distance High1.1048
Triple Number Windward/Leeward Low0.5834
Triple Number Windward/Leeward Medium0.7996
Triple Number Windward/Leeward High0.9182
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance666.50.9002
Triple Number Coastal/Long Distance Low792.10.7575
Triple Number Coastal/Long Distance Medium605.30.9912
Triple Number Coastal/Long Distance High543.11.1048
Triple Number Windward/Leeward Low1028.50.5834
Triple Number Windward/Leeward Medium750.40.7996
Triple Number Windward/Leeward High653.50.9182
Predominantly Upwind650.20.9228
Predominantly Downwind632.00.9493
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1764.01152.9858.4710.7628.1584.3551.5500.7487.8
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance666.50.9002
Triple Number Coastal/Long Distance Low792.10.7575
Triple Number Coastal/Long Distance Medium605.30.9912
Triple Number Coastal/Long Distance High543.11.1048
Triple Number Windward/Leeward Low1028.50.5834
Triple Number Windward/Leeward Medium750.40.7996
Triple Number Windward/Leeward High653.50.9182
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1764.01152.9858.4710.7628.1584.3551.5500.7487.8
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low792.10.7575
Triple Number AP Medium605.40.9911
Triple Number AP High543.11.1048
Triple Number Windward/Leeward Low1077.00.5571
Triple Number Windward/Leeward Medium750.40.7996
Triple Number Windward/Leeward High653.50.9182
Single Number Predominant Upwind676.80.8865
Single Number Predominant Reaching606.80.9887
Single Number Predominant Downwind664.90.9024
Predominant Upwind - Low922.70.6502
Predominant Upwind - Low/Med706.80.8489
Predominant Upwind - Medium629.20.9536
Predominant Upwind - Med/High595.11.0083
Predominant Upwind - High586.11.0237
Predominant Downwind Low1008.00.5952
Predominant Downwind Low/Med727.60.8246
Predominant Downwind Medium607.20.9882
Predominant Downwind Med/High535.31.1208
Predominant Downwind High500.61.1986
Predominant Reaching Low852.10.7041
Predominant Reaching Low/Med645.50.9296
Predominant Reaching Medium563.71.0643
Predominant Reaching Med/High518.61.1569
Predominant Reaching High497.01.2071
SA/DSPL Upwind23.27SA/DSPL Downwind23.27
Scoring OptionTODTOT
5-Band Windward/Leeward Low1209.60.4960
5-Band Windward/Leeward Low/Med875.00.6857
5-Band Windward/Leeward Medium737.00.8141
5-Band Windward/Leeward Med/High661.80.9066
5-Band Windward/Leeward High636.40.9428
Windward/Leeward 60-40 Low1193.60.5027
Windward/Leeward 60-40 Low/Med874.20.6863
Windward/Leeward 60-40 Medium747.50.8027
Windward/Leeward 60-40 Med/High682.90.8786
Windward/Leeward 60-40 High664.50.9030
5-Band AP Low888.60.6752
5-Band AP Low/Med687.90.8723
5-Band AP Medium596.81.0053
5-Band AP Med/High549.11.0927
5-Band AP High529.41.1333
5-Band SF Bay Tour - Low1032.10.5813
5-Band SF Bay Tour - Low/Med833.40.7199
5-Band SF Bay Tour - Medium710.90.8440
5-Band SF Bay Tour - Med/High648.00.9260
5-Band SF Bay Tour - High626.90.9571
Chicago-Mac Upwind0.8618
Chicago-Mac All Purpose0.8693
Chicago-Mac Downwind0.8668
Bayview-Mac Cove Island0.6271
Bayview-Mac Shore0.6346
Harvest Moon Regatta526.61.1393
Double HandedClub Certificate2025
GULLIVERNED 6636
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassWinner 1010 x 1.80Measurement25/07/2005HINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA10.100Max. Beam3.320Draft1.788Displacement4,597Wetted area22.55IMS L8.812LSM08.664Acc. length10.129Sink (kg/mm) 17.14
VCGD-0.036VCGM0.029RM Rated (kg·m) 111.6Limit of positive stability(°) N/AStability IndexN/ADefault crew weight170Declared crew weightN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.380PBW0.103PIPA0.0034
EDL2.000ST10.055ST20.176
ST30.170ST40.099ST50.310
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders2Rotating mastNo
P12.500IG12.750ISP12.850MDT10.100MDL10.150MDT20.100MDL20.125TL1.000MW0.150GO0.150
E4.400J3.600BAS1.400FSD0.034SFJ0.000SPL3.680WPLTPSBD0.133MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date25/07/2005
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Double HandedClub Certificate2025
GULLIVERNED 6636
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentORC0.150.791.462.603.5230.77* Copied from legacy *
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentORC5.3912.35NoNo 33.88* Copied from legacy *
CRUISER/RACER REQUIREMENTS*
Accommodation length10.1 mTable area0.44 m²Headroom1.71 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity82 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity52 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.