Double HandedClub Certificate2025
NimrodNED 3921
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°41.9°40.4°40.1°40.2°40.4°41.1°43.6°
Beat VMG2.583.604.414.875.055.135.175.154.88
52°4.255.656.587.187.427.547.617.647.49
60°4.676.117.007.477.737.847.917.967.88
75°4.996.537.447.808.048.248.368.518.54
90°5.046.617.588.098.388.588.769.099.25
110°4.706.387.568.168.528.979.399.9910.41
120°4.606.307.548.248.809.199.5510.2811.25
135°3.915.627.067.938.579.229.9411.3912.78
150°3.324.725.967.077.918.489.0810.5213.53
Run VMG2.874.095.166.136.907.488.029.1411.72
Gybe Angles142.4°142.4°146.2°147.6°155.2°161.1°167.6°153.9°145.1°
APH ToD:515.5CDL: 9.829APH ToT: 1.1639CertNo:
BOAT
ClassJPK 39 FCDesignerJacques ValerBuilderJPK CompositesAge date09/2024Series date02/2021Offset fileJPK39-TK_DV.offData fileNED3921
HULL
Length Overall11.625 mMaximum Beam3.998 mDraft2.177 mDisplacement5,831 kgDLR4.6396IMS DivisionCruiser/RacerDynamic Allowance0.190%Age Allowance0.130%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.457m
CREW
Maximum weight170 kg(default)Minimum weight120 kg ✱ when appliedNon Manual PowerYesCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail43.6044.37Headsail Luffed38.9238.92Headsail Flying77.4677.46Symmetric118.61118.61Asymmetric160.13160.13 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail12.88Storm Jib10.64Heavy Weather Jib28.72
SAIL LIMITS
Headsails6Spinnakers5
✱ 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.
Double HandedClub Certificate2025
NimrodNED 3921
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 VMG1394.4999.4817.1740.0713.3701.3695.8698.5737.1
52°846.2637.5546.8501.5485.2477.5473.3471.3480.7
60°771.6589.0514.6482.0466.0459.2455.0452.0456.9
75°721.5551.2484.1461.4448.0437.1430.7423.2421.5
90°714.1544.4475.2445.3429.3419.4411.1396.2389.3
110°765.9564.5475.9441.0422.5401.3383.5360.2345.8
120°782.2571.5477.4436.6408.9391.7377.1350.0320.1
135°921.0640.6509.6453.9420.3390.5362.3315.9281.6
150°1083.9762.6603.7508.8455.3424.6396.4342.3266.1
Run VMG1252.4880.6697.1587.6521.5481.1448.9393.9307.3
Selected Courses
Windward / Leeward1323.4940.0757.1663.8617.4591.2572.4546.2522.2
All purpose982.4712.3587.9529.3499.8481.3467.0446.1431.9
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward643.50.9324
All purpose515.51.1639
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low650.10.9229
Triple Number Coastal/Long Distance Medium512.41.1710
Triple Number Coastal/Long Distance High462.71.2967
Triple Number Windward/Leeward Low848.50.7071
Triple Number Windward/Leeward Medium638.00.9405
Triple Number Windward/Leeward High567.31.0577
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance562.61.0666
Triple Number Coastal/Long Distance Low650.10.9229
Triple Number Coastal/Long Distance Medium512.41.1710
Triple Number Coastal/Long Distance High462.71.2967
Triple Number Windward/Leeward Low848.50.7071
Triple Number Windward/Leeward Medium638.00.9405
Triple Number Windward/Leeward High567.31.0577
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1399.3934.0709.2596.7534.7500.5471.6423.2403.1
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7828
Downwind "popa"1.0472
70% up, 30% down "Ilhabela"0.8469
30% up, 70% down "Ilhabela-inverso"0.9508
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low650.10.9229
Triple Number Coastal/Long Distance Medium512.41.1710
Triple Number Coastal/Long Distance High462.71.2967
Triple Number Windward/Leeward Low848.50.7071
Triple Number Windward/Leeward Medium638.00.9405
Triple Number Windward/Leeward High567.31.0577
Predominantly Upwind568.51.0554
Predominantly Downwind507.71.1818
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low650.10.9229
Triple Number AP Medium512.41.1709
Triple Number AP High462.71.2967
Triple Number Windward/Leeward Low886.70.6767
Triple Number Windward/Leeward Medium638.00.9405
Triple Number Windward/Leeward High567.31.0577
Single Number Predominant Upwind591.61.0143
Single Number Predominant Reaching502.21.1948
Single Number Predominant Downwind529.21.1337
Predominant Upwind - Low797.80.7521
Predominant Upwind - Low/Med615.90.9742
Predominant Upwind - Medium552.31.0863
Predominant Upwind - Med/High522.91.1475
Predominant Upwind - High512.11.1716
Predominant Downwind Low770.40.7789
Predominant Downwind Low/Med572.91.0473
Predominant Downwind Medium491.61.2204
Predominant Downwind Med/High438.01.3697
Predominant Downwind High400.51.4981
Predominant Reaching Low684.70.8763
Predominant Reaching Low/Med529.91.1322
Predominant Reaching Medium471.81.2716
Predominant Reaching Med/High435.81.3768
Predominant Reaching High412.81.4536
SA/DSPL Upwind25.32SA/DSPL Downwind62.52
Scoring OptionTODTOT
5-Band Windward/Leeward Low990.10.6060
5-Band Windward/Leeward Low/Med730.50.8214
5-Band Windward/Leeward Medium628.60.9545
5-Band Windward/Leeward Med/High574.91.0436
5-Band Windward/Leeward High546.61.0977
Windward/Leeward 60-40 Low1002.60.5984
Windward/Leeward 60-40 Low/Med744.70.8057
Windward/Leeward 60-40 Medium647.40.9268
Windward/Leeward 60-40 Med/High599.71.0005
Windward/Leeward 60-40 High578.21.0377
5-Band AP Low708.40.8469
5-Band AP Low/Med572.61.0479
5-Band AP Medium506.21.1853
5-Band AP Med/High468.61.2803
5-Band AP High447.21.3416
5-Band SF Bay Tour - Low854.90.7018
5-Band SF Bay Tour - Low/Med699.50.8578
5-Band SF Bay Tour - Medium607.40.9879
5-Band SF Bay Tour - Med/High559.41.0726
5-Band SF Bay Tour - High534.61.1222
Chicago-Mac Upwind0.9863
Chicago-Mac All Purpose1.0414
Chicago-Mac Downwind1.0924
Bayview-Mac Cove Island0.7641
Bayview-Mac Shore0.7694
Harvest Moon Regatta437.01.3731
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance562.61.0666
Triple Number Coastal/Long Distance Low650.10.9229
Triple Number Coastal/Long Distance Medium512.41.1710
Triple Number Coastal/Long Distance High462.71.2967
Triple Number Windward/Leeward Low848.50.7071
Triple Number Windward/Leeward Medium638.00.9405
Triple Number Windward/Leeward High567.31.0577
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1399.3934.0709.2596.7534.7500.5471.6423.2403.1
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance562.61.0666
Triple Number Coastal/Long Distance Low650.10.9229
Triple Number Coastal/Long Distance Medium512.41.1710
Triple Number Coastal/Long Distance High462.71.2967
Triple Number Windward/Leeward Low848.50.7071
Triple Number Windward/Leeward Medium638.00.9405
Triple Number Windward/Leeward High567.31.0577
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1399.3934.0709.2596.7534.7500.5471.6423.2403.1
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance562.6
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1399.3934.0709.2596.7534.7500.5471.6423.2403.1
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low650.10.9229
Triple Number Coastal/Long Distance Medium512.41.1710
Triple Number Coastal/Long Distance High462.71.2967
Triple Number Windward/Leeward Low848.50.7071
Triple Number Windward/Leeward Medium638.00.9405
Triple Number Windward/Leeward High567.31.0577
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating557.11.0770
FinRating, kevyt tuuli965.41.0358
FinRating, kova tuuli448.71.1143
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low650.10.9229
Triple Number Coastal/Long Distance Medium512.41.1710
Triple Number Coastal/Long Distance High462.71.2967
Triple Number Windward/Leeward Low848.50.7071
Triple Number Windward/Leeward Medium638.00.9405
Triple Number Windward/Leeward High567.31.0577
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance1.0666
Triple Number Coastal/Long Distance Low0.9229
Triple Number Coastal/Long Distance Medium1.1710
Triple Number Coastal/Long Distance High1.2967
Triple Number Windward/Leeward Low0.7071
Triple Number Windward/Leeward Medium0.9405
Triple Number Windward/Leeward High1.0577
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1399.3934.0709.2596.7534.7500.5471.6423.2403.1
For information
General Purpose Handicap (GPH)575.9
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance562.61.0666
Triple Number Coastal/Long Distance Low650.10.9229
Triple Number Coastal/Long Distance Medium512.41.1710
Triple Number Coastal/Long Distance High462.71.2967
Triple Number Windward/Leeward Low848.50.7071
Triple Number Windward/Leeward Medium638.00.9405
Triple Number Windward/Leeward High567.31.0577
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1399.3934.0709.2596.7534.7500.5471.6423.2403.1
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low650.10.9229
Triple Number Coastal/Long Distance Medium512.41.1710
Triple Number Coastal/Long Distance High462.71.2967
Triple Number Windward/Leeward Low848.50.7071
Triple Number Windward/Leeward Medium638.00.9405
Triple Number Windward/Leeward High567.31.0577
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance562.61.0666
Triple Number Coastal/Long Distance Low650.10.9229
Triple Number Coastal/Long Distance Medium512.41.1710
Triple Number Coastal/Long Distance High462.71.2967
Triple Number Windward/Leeward Low848.50.7071
Triple Number Windward/Leeward Medium638.00.9405
Triple Number Windward/Leeward High567.31.0577
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1399.3934.0709.2596.7534.7500.5471.6423.2403.1
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance562.61.0666
Triple Number Coastal/Long Distance Low650.10.9229
Triple Number Coastal/Long Distance Medium512.41.1710
Triple Number Coastal/Long Distance High462.71.2967
Triple Number Windward/Leeward Low848.50.7071
Triple Number Windward/Leeward Medium638.00.9405
Triple Number Windward/Leeward High567.31.0577
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1399.3934.0709.2596.7534.7500.5471.6423.2403.1
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low650.1
Triple Number Coastal/Long Distance Medium512.4
Triple Number Coastal/Long Distance High462.7
Triple Number Windward/Leeward Low848.5
Triple Number Windward/Leeward Medium638.0
Triple Number Windward/Leeward High567.3
Predominantly Upwind568.5
Predominantly Downwind507.7
Predominantly Reaching488.7
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance562.61.0666
Triple Number Coastal/Long Distance Low650.10.9229
Triple Number Coastal/Long Distance Medium512.41.1710
Triple Number Coastal/Long Distance High462.71.2967
Triple Number Windward/Leeward Low848.50.7071
Triple Number Windward/Leeward Medium638.00.9405
Triple Number Windward/Leeward High567.31.0577
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1399.3934.0709.2596.7534.7500.5471.6423.2403.1
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9229
Triple Number Coastal/Long Distance Medium1.1710
Triple Number Coastal/Long Distance High1.2967
Triple Number Windward/Leeward Low0.7071
Triple Number Windward/Leeward Medium0.9405
Triple Number Windward/Leeward High1.0577
Coastal/Long Distance1.0666
Predominantly Upwind1.0554
Predominantly Downwind1.1818
For information
General Purpose Handicap (GPH)575.9
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.1639
Distanseseilas Trippeltall svak vind0.9229
Distanseseilas Trippeltall mellomvind1.1710
Distanseseilas Trippeltall sterk vind1.2967
Pølsebane Trippeltall svak vind0.7071
Pølsebane Trippeltall mellomvind0.9405
Pølsebane Trippeltall sterk vind1.0577
Motvind Singeltall1.0554
Medvind Singeltall1.1818
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low650.10.9229
Triple Number Coastal/Long Distance Medium512.41.1710
Triple Number Coastal/Long Distance High462.71.2967
Triple Number Windward/Leeward Low848.50.7071
Triple Number Windward/Leeward Medium638.00.9405
Triple Number Windward/Leeward High567.31.0577
Coastal/Long Distance562.61.0666
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind568.51.0554
Predominantly Downwind507.71.1818
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore529.41.1334
Cape Doctor Coastal436.11.3757
Triple Number Coastal/Long Distance Low650.10.9229
Triple Number Coastal/Long Distance Medium512.41.1710
Triple Number Coastal/Long Distance High462.71.2967
Triple Number Windward/Leeward Low848.50.7071
Triple Number Windward/Leeward Medium638.00.9405
Triple Number Windward/Leeward High567.31.0577
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9229
Triple Number Coastal/Long Distance Medium1.1710
Triple Number Coastal/Long Distance High1.2967
Triple Number Windward/Leeward Low0.7071
Triple Number Windward/Leeward Medium0.9405
Triple Number Windward/Leeward High1.0577
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9229
Triple Number Coastal/Long Distance Medium1.1710
Triple Number Coastal/Long Distance High1.2967
Triple Number Windward/Leeward Low0.7071
Triple Number Windward/Leeward Medium0.9405
Triple Number Windward/Leeward High1.0577
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance562.61.0666
Triple Number Coastal/Long Distance Low650.10.9229
Triple Number Coastal/Long Distance Medium512.41.1710
Triple Number Coastal/Long Distance High462.71.2967
Triple Number Windward/Leeward Low848.50.7071
Triple Number Windward/Leeward Medium638.00.9405
Triple Number Windward/Leeward High567.31.0577
Predominantly Upwind568.51.0554
Predominantly Downwind507.71.1818
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1399.3934.0709.2596.7534.7500.5471.6423.2403.1
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance562.61.0666
Triple Number Coastal/Long Distance Low650.10.9229
Triple Number Coastal/Long Distance Medium512.41.1710
Triple Number Coastal/Long Distance High462.71.2967
Triple Number Windward/Leeward Low848.50.7071
Triple Number Windward/Leeward Medium638.00.9405
Triple Number Windward/Leeward High567.31.0577
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1399.3934.0709.2596.7534.7500.5471.6423.2403.1
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low650.10.9229
Triple Number AP Medium512.41.1709
Triple Number AP High462.71.2967
Triple Number Windward/Leeward Low886.70.6767
Triple Number Windward/Leeward Medium638.00.9405
Triple Number Windward/Leeward High567.31.0577
Single Number Predominant Upwind591.61.0143
Single Number Predominant Reaching502.21.1948
Single Number Predominant Downwind529.21.1337
Predominant Upwind - Low797.80.7521
Predominant Upwind - Low/Med615.90.9742
Predominant Upwind - Medium552.31.0863
Predominant Upwind - Med/High522.91.1475
Predominant Upwind - High512.11.1716
Predominant Downwind Low770.40.7789
Predominant Downwind Low/Med572.91.0473
Predominant Downwind Medium491.61.2204
Predominant Downwind Med/High438.01.3697
Predominant Downwind High400.51.4981
Predominant Reaching Low684.70.8763
Predominant Reaching Low/Med529.91.1322
Predominant Reaching Medium471.81.2716
Predominant Reaching Med/High435.81.3768
Predominant Reaching High412.81.4536
SA/DSPL Upwind25.32SA/DSPL Downwind62.52
Scoring OptionTODTOT
5-Band Windward/Leeward Low990.10.6060
5-Band Windward/Leeward Low/Med730.50.8214
5-Band Windward/Leeward Medium628.60.9545
5-Band Windward/Leeward Med/High574.91.0436
5-Band Windward/Leeward High546.61.0977
Windward/Leeward 60-40 Low1002.60.5984
Windward/Leeward 60-40 Low/Med744.70.8057
Windward/Leeward 60-40 Medium647.40.9268
Windward/Leeward 60-40 Med/High599.71.0005
Windward/Leeward 60-40 High578.21.0377
5-Band AP Low708.40.8469
5-Band AP Low/Med572.61.0479
5-Band AP Medium506.21.1853
5-Band AP Med/High468.61.2803
5-Band AP High447.21.3416
5-Band SF Bay Tour - Low854.90.7018
5-Band SF Bay Tour - Low/Med699.50.8578
5-Band SF Bay Tour - Medium607.40.9879
5-Band SF Bay Tour - Med/High559.41.0726
5-Band SF Bay Tour - High534.61.1222
Chicago-Mac Upwind0.9863
Chicago-Mac All Purpose1.0414
Chicago-Mac Downwind1.0924
Bayview-Mac Cove Island0.7641
Bayview-Mac Shore0.7694
Harvest Moon Regatta437.01.3731
Double HandedClub Certificate2025
NimrodNED 3921
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJPK 39 FCMeasurement03/03/2025HINJPKJAC21E424Plan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA11.625Max. Beam3.998Draft2.177Displacement5,831Wetted area30.23IMS L10.893LSM010.791Acc. length11.625Sink (kg/mm) 24.27
VCGD0.225VCGM0.283RM Rated (kg·m) 177.7Limit of positive stability(°) N/AStability IndexN/ADefault crew weight170Declared crew weightN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.457PBWPIPA0.0040
EDL2.000ST10.065ST20.180
ST30.180ST40.110ST50.310
RIG
Forestay tensionAftInner stayNone FittedMast materialCarbonSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstaysCheckstays2Spreaders2Rotating mastNo
P14.800IG15.200ISP16.677MDT10.130MDL10.210MDT20.130MDL20.185TL1.050MW0.210GO
E4.970J4.970BAS1.700FSDSFJ0.080SPL4.830WPLTPS6.580BDMWT150.00MCG6.065
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date13/02/2025
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Double HandedClub Certificate2025
NimrodNED 3921
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentM10.351.121.873.134.1243.60North data
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentC00.051.402.755.207.008.2616.44NoYes077.46North dataG10.080.661.262.513.815.0915.32YesNo 38.92North dataTrinquette0.080.490.921.812.773.8111.24NoNo 20.96North data
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentS216.5016.5016.508.718.29118.61North data
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentA219.7317.5818.669.39NaN160.13Own measurement
CRUISER/RACER REQUIREMENTS*
Accommodation length11.6 mTable area0.55 m²Headroom1.79 mMinimum number of berths5Personal gear stowage0.20 m³Fresh water capacity140 lMinimum number of seats in cockpit5Food stowage0.30 m³Fuel capacity82 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.