Club Certificate2025
Pas de DeuxNED 7108
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 Angles43.9°43.9°41.6°40.4°39.3°38.9°38.6°38.9°40.0°
Beat VMG2.443.364.094.624.945.095.165.195.09
52°3.825.156.116.747.087.257.337.407.38
60°4.085.446.386.967.287.457.557.637.64
75°4.265.666.587.127.447.677.848.028.11
90°4.155.646.727.327.657.847.998.358.58
110°4.175.706.827.437.848.208.538.969.30
120°4.025.536.677.337.758.158.549.329.94
135°3.524.936.106.947.467.858.259.1110.27
150°2.894.155.276.216.927.397.738.429.20
Run VMG2.513.594.565.376.016.496.917.608.20
Gybe Angles143.0°143.0°147.6°149.4°151.9°157.2°162.4°179.8°179.8°
APH ToD:561.2CDL: 9.183APH ToT: 1.0692CertNo:
BOAT
ClassDEHLER 36 JVDesignerJudel VrolijkBuilderDehlerAge date01/2003Series date01/2000Offset fileDEHLER36JV.offData fileNED7108
HULL
Length Overall10.972 mMaximum Beam3.522 mDraft1.970 mDisplacement6,483 kgDLR6.7653IMS DivisionCruiser/RacerDynamic Allowance0.290%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.415m
CREW
Maximum weight400 kg(declared)Minimum weight270 kg ✱ when appliedNon Manual PowerSailsCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail38.7639.23Headsail Luffed31.2831.28Headsail FlyingSymmetricAsymmetric79.1379.14 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail12.20Storm Jib10.94Heavy Weather Jib29.54
SAIL LIMITS
Headsails5
✱ One set on the forestay
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.
Club Certificate2025
Pas de DeuxNED 7108
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 VMG1477.91070.6879.5779.1728.1707.3697.4694.0707.0
52°941.8698.7589.3534.0508.1496.2490.9486.6487.9
60°883.3661.2564.2517.5494.8483.0477.0471.6471.4
75°844.9636.3547.0505.6483.7469.4459.3448.6443.9
90°867.1637.9535.9492.0470.3459.0450.7431.1419.5
110°863.7631.4527.7484.5459.4438.9422.0401.6387.3
120°894.7650.7540.1491.4464.4441.8421.7386.4362.3
135°1021.5729.6590.5518.5482.8458.3436.2395.2350.5
150°1244.3868.0683.8580.0520.0487.5465.6427.8391.5
Run VMG1436.71002.3789.5669.8599.1554.3521.0473.8438.8
Selected Courses
Windward / Leeward1456.51036.5834.5724.4663.6630.8609.2583.9572.9
All purpose1099.8795.0652.3579.4540.5518.4503.2482.9470.4
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward695.50.8627
All purpose561.21.0692
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low723.70.8291
Triple Number Coastal/Long Distance Medium557.31.0767
Triple Number Coastal/Long Distance High499.41.2014
Triple Number Windward/Leeward Low935.50.6414
Triple Number Windward/Leeward Medium689.90.8697
Triple Number Windward/Leeward High605.10.9915
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance611.70.9808
Triple Number Coastal/Long Distance Low723.70.8291
Triple Number Coastal/Long Distance Medium557.31.0767
Triple Number Coastal/Long Distance High499.41.2014
Triple Number Windward/Leeward Low935.50.6414
Triple Number Windward/Leeward Medium689.90.8697
Triple Number Windward/Leeward High605.10.9915
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1544.51033.0783.8652.6577.2538.4508.8460.3446.0
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7559
Downwind "popa"0.9111
70% up, 30% down "Ilhabela"0.7966
30% up, 70% down "Ilhabela-inverso"0.8583
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low723.70.8291
Triple Number Coastal/Long Distance Medium557.31.0767
Triple Number Coastal/Long Distance High499.41.2014
Triple Number Windward/Leeward Low935.50.6414
Triple Number Windward/Leeward Medium689.90.8697
Triple Number Windward/Leeward High605.10.9915
Predominantly Upwind607.90.9870
Predominantly Downwind570.51.0516
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low723.60.8291
Triple Number AP Medium557.31.0766
Triple Number AP High499.41.2014
Triple Number Windward/Leeward Low976.70.6143
Triple Number Windward/Leeward Medium689.90.8697
Triple Number Windward/Leeward High605.10.9915
Single Number Predominant Upwind633.30.9474
Single Number Predominant Reaching557.21.0769
Single Number Predominant Downwind595.71.0072
Predominant Upwind - Low878.30.6831
Predominant Upwind - Low/Med668.70.8973
Predominant Upwind - Medium587.41.0214
Predominant Upwind - Med/High549.51.0920
Predominant Upwind - High535.11.1213
Predominant Downwind Low870.50.6893
Predominant Downwind Low/Med643.80.9319
Predominant Downwind Medium550.11.0907
Predominant Downwind Med/High494.51.2134
Predominant Downwind High460.71.3024
Predominant Reaching Low775.80.7734
Predominant Reaching Low/Med590.61.0159
Predominant Reaching Medium519.21.1556
Predominant Reaching Med/High480.31.2493
Predominant Reaching High456.41.3146
SA/DSPL Upwind20.02SA/DSPL Downwind33.70
Scoring OptionTODTOT
5-Band Windward/Leeward Low1091.20.5499
5-Band Windward/Leeward Low/Med800.20.7498
5-Band Windward/Leeward Medium678.00.8850
5-Band Windward/Leeward Med/High613.20.9785
5-Band Windward/Leeward High586.41.0232
Windward/Leeward 60-40 Low1097.90.5465
Windward/Leeward 60-40 Low/Med810.20.7406
Windward/Leeward 60-40 Medium691.00.8683
Windward/Leeward 60-40 Med/High630.70.9513
Windward/Leeward 60-40 High608.50.9861
5-Band AP Low797.40.7524
5-Band AP Low/Med631.10.9507
5-Band AP Medium549.51.0920
5-Band AP Med/High505.51.1869
5-Band AP High484.31.2390
5-Band SF Bay Tour - Low941.20.6375
5-Band SF Bay Tour - Low/Med764.80.7845
5-Band SF Bay Tour - Medium653.20.9186
5-Band SF Bay Tour - Med/High595.51.0075
5-Band SF Bay Tour - High571.31.0502
Chicago-Mac Upwind0.9179
Chicago-Mac All Purpose0.9478
Chicago-Mac Downwind0.9715
Bayview-Mac Cove Island0.6917
Bayview-Mac Shore0.6966
Harvest Moon Regatta486.61.2332
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance611.70.9808
Triple Number Coastal/Long Distance Low723.70.8291
Triple Number Coastal/Long Distance Medium557.31.0767
Triple Number Coastal/Long Distance High499.41.2014
Triple Number Windward/Leeward Low935.50.6414
Triple Number Windward/Leeward Medium689.90.8697
Triple Number Windward/Leeward High605.10.9915
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1544.51033.0783.8652.6577.2538.4508.8460.3446.0
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance611.70.9808
Triple Number Coastal/Long Distance Low723.70.8291
Triple Number Coastal/Long Distance Medium557.31.0767
Triple Number Coastal/Long Distance High499.41.2014
Triple Number Windward/Leeward Low935.50.6414
Triple Number Windward/Leeward Medium689.90.8697
Triple Number Windward/Leeward High605.10.9915
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1544.51033.0783.8652.6577.2538.4508.8460.3446.0
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance611.7
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1544.51033.0783.8652.6577.2538.4508.8460.3446.0
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low723.70.8291
Triple Number Coastal/Long Distance Medium557.31.0767
Triple Number Coastal/Long Distance High499.41.2014
Triple Number Windward/Leeward Low935.50.6414
Triple Number Windward/Leeward Medium689.90.8697
Triple Number Windward/Leeward High605.10.9915
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating (Coastal/Long Distance)611.70.9808
Triple Number Coastal/Long Distance Low723.70.8291
Triple Number Coastal/Long Distance Medium557.31.0767
Triple Number Coastal/Long Distance High499.41.2014
Triple Number Windward/Leeward Low935.50.6414
Triple Number Windward/Leeward Medium689.90.8697
Triple Number Windward/Leeward High605.10.9915
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1544.51033.0783.8652.6577.2538.4508.8460.3446.0
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low723.70.8291
Triple Number Coastal/Long Distance Medium557.31.0767
Triple Number Coastal/Long Distance High499.41.2014
Triple Number Windward/Leeward Low935.50.6414
Triple Number Windward/Leeward Medium689.90.8697
Triple Number Windward/Leeward High605.10.9915
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9808
Triple Number Coastal/Long Distance Low0.8291
Triple Number Coastal/Long Distance Medium1.0767
Triple Number Coastal/Long Distance High1.2014
Triple Number Windward/Leeward Low0.6414
Triple Number Windward/Leeward Medium0.8697
Triple Number Windward/Leeward High0.9915
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1544.51033.0783.8652.6577.2538.4508.8460.3446.0
For information
General Purpose Handicap (GPH)630.3
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance611.70.9808
Triple Number Coastal/Long Distance Low723.70.8291
Triple Number Coastal/Long Distance Medium557.31.0767
Triple Number Coastal/Long Distance High499.41.2014
Triple Number Windward/Leeward Low935.50.6414
Triple Number Windward/Leeward Medium689.90.8697
Triple Number Windward/Leeward High605.10.9915
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1544.51033.0783.8652.6577.2538.4508.8460.3446.0
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low723.70.8291
Triple Number Coastal/Long Distance Medium557.31.0767
Triple Number Coastal/Long Distance High499.41.2014
Triple Number Windward/Leeward Low935.50.6414
Triple Number Windward/Leeward Medium689.90.8697
Triple Number Windward/Leeward High605.10.9915
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance611.70.9808
Triple Number Coastal/Long Distance Low723.70.8291
Triple Number Coastal/Long Distance Medium557.31.0767
Triple Number Coastal/Long Distance High499.41.2014
Triple Number Windward/Leeward Low935.50.6414
Triple Number Windward/Leeward Medium689.90.8697
Triple Number Windward/Leeward High605.10.9915
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1544.51033.0783.8652.6577.2538.4508.8460.3446.0
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance611.70.9808
Triple Number Coastal/Long Distance Low723.70.8291
Triple Number Coastal/Long Distance Medium557.31.0767
Triple Number Coastal/Long Distance High499.41.2014
Triple Number Windward/Leeward Low935.50.6414
Triple Number Windward/Leeward Medium689.90.8697
Triple Number Windward/Leeward High605.10.9915
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1544.51033.0783.8652.6577.2538.4508.8460.3446.0
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low723.7
Triple Number Coastal/Long Distance Medium557.3
Triple Number Coastal/Long Distance High499.4
Triple Number Windward/Leeward Low935.5
Triple Number Windward/Leeward Medium689.9
Triple Number Windward/Leeward High605.1
Predominantly Upwind607.9
Predominantly Downwind570.5
Predominantly Reaching545.0
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance611.70.9808
Triple Number Coastal/Long Distance Low723.70.8291
Triple Number Coastal/Long Distance Medium557.31.0767
Triple Number Coastal/Long Distance High499.41.2014
Triple Number Windward/Leeward Low935.50.6414
Triple Number Windward/Leeward Medium689.90.8697
Triple Number Windward/Leeward High605.10.9915
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1544.51033.0783.8652.6577.2538.4508.8460.3446.0
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8291
Triple Number Coastal/Long Distance Medium1.0767
Triple Number Coastal/Long Distance High1.2014
Triple Number Windward/Leeward Low0.6414
Triple Number Windward/Leeward Medium0.8697
Triple Number Windward/Leeward High0.9915
Coastal/Long Distance0.9808
Predominantly Upwind0.9870
Predominantly Downwind1.0516
For information
General Purpose Handicap (GPH)630.3
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0692
Distanseseilas Trippeltall svak vind0.8291
Distanseseilas Trippeltall mellomvind1.0767
Distanseseilas Trippeltall sterk vind1.2014
Pølsebane Trippeltall svak vind0.6414
Pølsebane Trippeltall mellomvind0.8697
Pølsebane Trippeltall sterk vind0.9915
Motvind Singeltall0.9870
Medvind Singeltall1.0516
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low723.70.8291
Triple Number Coastal/Long Distance Medium557.31.0767
Triple Number Coastal/Long Distance High499.41.2014
Triple Number Windward/Leeward Low935.50.6414
Triple Number Windward/Leeward Medium689.90.8697
Triple Number Windward/Leeward High605.10.9915
Coastal/Long Distance611.70.9808
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind607.90.9870
Predominantly Downwind570.51.0516
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore576.21.0413
Cape Doctor Coastal474.21.2654
Triple Number Coastal/Long Distance Low723.70.8291
Triple Number Coastal/Long Distance Medium557.31.0767
Triple Number Coastal/Long Distance High499.41.2014
Triple Number Windward/Leeward Low935.50.6414
Triple Number Windward/Leeward Medium689.90.8697
Triple Number Windward/Leeward High605.10.9915
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8291
Triple Number Coastal/Long Distance Medium1.0767
Triple Number Coastal/Long Distance High1.2014
Triple Number Windward/Leeward Low0.6414
Triple Number Windward/Leeward Medium0.8697
Triple Number Windward/Leeward High0.9915
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8291
Triple Number Coastal/Long Distance Medium1.0767
Triple Number Coastal/Long Distance High1.2014
Triple Number Windward/Leeward Low0.6414
Triple Number Windward/Leeward Medium0.8697
Triple Number Windward/Leeward High0.9915
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance611.70.9808
Triple Number Coastal/Long Distance Low723.70.8291
Triple Number Coastal/Long Distance Medium557.31.0767
Triple Number Coastal/Long Distance High499.41.2014
Triple Number Windward/Leeward Low935.50.6414
Triple Number Windward/Leeward Medium689.90.8697
Triple Number Windward/Leeward High605.10.9915
Predominantly Upwind607.90.9870
Predominantly Downwind570.51.0516
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1544.51033.0783.8652.6577.2538.4508.8460.3446.0
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance611.70.9808
Triple Number Coastal/Long Distance Low723.70.8291
Triple Number Coastal/Long Distance Medium557.31.0767
Triple Number Coastal/Long Distance High499.41.2014
Triple Number Windward/Leeward Low935.50.6414
Triple Number Windward/Leeward Medium689.90.8697
Triple Number Windward/Leeward High605.10.9915
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1544.51033.0783.8652.6577.2538.4508.8460.3446.0
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low723.60.8291
Triple Number AP Medium557.31.0766
Triple Number AP High499.41.2014
Triple Number Windward/Leeward Low976.70.6143
Triple Number Windward/Leeward Medium689.90.8697
Triple Number Windward/Leeward High605.10.9915
Single Number Predominant Upwind633.30.9474
Single Number Predominant Reaching557.21.0769
Single Number Predominant Downwind595.71.0072
Predominant Upwind - Low878.30.6831
Predominant Upwind - Low/Med668.70.8973
Predominant Upwind - Medium587.41.0214
Predominant Upwind - Med/High549.51.0920
Predominant Upwind - High535.11.1213
Predominant Downwind Low870.50.6893
Predominant Downwind Low/Med643.80.9319
Predominant Downwind Medium550.11.0907
Predominant Downwind Med/High494.51.2134
Predominant Downwind High460.71.3024
Predominant Reaching Low775.80.7734
Predominant Reaching Low/Med590.61.0159
Predominant Reaching Medium519.21.1556
Predominant Reaching Med/High480.31.2493
Predominant Reaching High456.41.3146
SA/DSPL Upwind20.02SA/DSPL Downwind33.70
Scoring OptionTODTOT
5-Band Windward/Leeward Low1091.20.5499
5-Band Windward/Leeward Low/Med800.20.7498
5-Band Windward/Leeward Medium678.00.8850
5-Band Windward/Leeward Med/High613.20.9785
5-Band Windward/Leeward High586.41.0232
Windward/Leeward 60-40 Low1097.90.5465
Windward/Leeward 60-40 Low/Med810.20.7406
Windward/Leeward 60-40 Medium691.00.8683
Windward/Leeward 60-40 Med/High630.70.9513
Windward/Leeward 60-40 High608.50.9861
5-Band AP Low797.40.7524
5-Band AP Low/Med631.10.9507
5-Band AP Medium549.51.0920
5-Band AP Med/High505.51.1869
5-Band AP High484.31.2390
5-Band SF Bay Tour - Low941.20.6375
5-Band SF Bay Tour - Low/Med764.80.7845
5-Band SF Bay Tour - Medium653.20.9186
5-Band SF Bay Tour - Med/High595.51.0075
5-Band SF Bay Tour - High571.31.0502
Chicago-Mac Upwind0.9179
Chicago-Mac All Purpose0.9478
Chicago-Mac Downwind0.9715
Bayview-Mac Cove Island0.6917
Bayview-Mac Shore0.6966
Harvest Moon Regatta486.61.2332
Club Certificate2025
Pas de DeuxNED 7108
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassDEHLER 36 JVMeasurement22/04/2024HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA10.972Max. Beam3.522Draft1.970Displacement6,483Wetted area27.22IMS L9.953LSM09.858Acc. length10.972Sink (kg/mm) 20.32
VCGD-0.027VCGM-0.043RM Rated (kg·m) 149.9Limit of positive stability(°) N/AStability IndexN/ADefault crew weight674Declared crew weight400
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.415PBWPIPA0.0007
EDLST1ST2
ST3ST4ST5
RIG
Forestay tensionAftInner stayFixedMast materialAluminumSingle headsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders2Rotating mastNo
P14.080IG14.790ISP14.790MDT10.120MDL10.200MDT2MDL2TLNo TaperMWGO
E4.950J4.240BAS1.640FSDSFJSPLWPLTPS4.530BDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date22/04/2024
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
Pas de DeuxNED 7108
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.160.881.622.863.9838.76
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment10.120.621.172.243.274.2914.15NoNo 31.28
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment114.2213.7113.976.647.4489%79.13
CRUISER/RACER REQUIREMENTS*
Accommodation length11.0 mTable area0.55 m²Headroom1.76 mMinimum number of berths5Personal gear stowage0.20 m³Fresh water capacity125 lMinimum number of seats in cockpit5Food stowage0.30 m³Fuel capacity70 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.