Club Certificate2025
Sgt. PepperNOR 596
Norges Seilforbund
Sognsveien 73
0854 OSLO
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 Angles42.7°42.7°40.1°38.2°37.4°37.1°37.2°37.3°39.0°
Beat VMG2.563.534.274.704.874.975.045.105.00
52°4.005.346.226.646.826.926.997.087.07
60°4.265.606.426.817.007.117.197.307.32
75°4.425.766.566.967.217.397.517.697.76
90°4.305.726.637.017.287.557.778.108.30
110°4.295.756.737.217.577.858.088.528.95
120°4.085.556.597.157.598.008.419.129.88
135°3.504.916.076.837.327.808.319.7712.04
150°2.814.055.186.186.897.347.808.9011.17
Run VMG2.433.514.495.356.126.687.117.959.67
Gybe Angles137.2°137.2°149.2°151.4°159.5°168.2°173.6°169.9°144.7°
APH ToD:567.7CDL: 8.413APH ToT: 1.0569CertNo:8412
BOAT
ClassX-99DesignerNielsJeppesenBuilderNordsoe VerftAge date01/2003Series date01/1984Offset filex99.od.offData file8412
HULL
Length Overall10.000 mMaximum Beam2.990 mDraft1.792 mDisplacement3,020 kgDLR5.4984IMS DivisionCruiser/RacerDynamic Allowance0.180%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.310m
CREW
Maximum weight480 kg(declared)Minimum weight350 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail32.6033.20Headsail Luffed19.1119.11Headsail FlyingSymmetric70.8970.89Asymmetric
STORM SAIL AREAS (m²)
Trysail9.85Storm Jib6.42Heavy Weather Jib17.32
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.
Club Certificate2025
Sgt. PepperNOR 596
Norges Seilforbund
Sognsveien 73
0854 OSLO
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 VMG1408.91020.1842.4766.6738.8724.3714.5705.9720.3
52°900.7674.6578.6541.9527.8520.2514.9508.7508.9
60°845.2643.0560.7528.4514.0506.3500.6493.5491.6
75°815.1624.6548.7517.2499.2487.1479.2468.3463.7
90°836.8629.1543.3513.7494.3477.0463.5444.5433.9
110°840.1626.2534.8499.0475.7458.4445.6422.7402.1
120°881.7648.6545.9503.5474.4450.0427.9394.9364.4
135°1029.3732.9593.4526.8491.7461.4433.1368.5298.9
150°1281.0889.2695.0582.8522.7490.4461.8404.7322.3
Run VMG1481.91026.7802.6672.4588.5538.9506.0452.7372.1
Selected Courses
Windward / Leeward1444.51023.4822.5719.5663.7631.6610.3579.3546.2
All purpose1080.5783.8647.7584.4550.7529.6513.5487.0461.9
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward692.70.8661
All purpose567.71.0569
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low715.70.8383
Triple Number Coastal/Long Distance Medium564.81.0624
Triple Number Coastal/Long Distance High507.61.1821
Triple Number Windward/Leeward Low922.90.6501
Triple Number Windward/Leeward Medium687.50.8727
Triple Number Windward/Leeward High604.00.9934
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance616.30.9735
Triple Number Coastal/Long Distance Low715.70.8383
Triple Number Coastal/Long Distance Medium564.81.0624
Triple Number Coastal/Long Distance High507.61.1821
Triple Number Windward/Leeward Low922.90.6501
Triple Number Windward/Leeward Medium687.50.8727
Triple Number Windward/Leeward High604.00.9934
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1539.91023.7775.2653.2586.0549.0518.0467.3442.3
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7619
Downwind "popa"0.9155
70% up, 30% down "Ilhabela"0.8023
30% up, 70% down "Ilhabela-inverso"0.8633
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low715.70.8383
Triple Number Coastal/Long Distance Medium564.81.0624
Triple Number Coastal/Long Distance High507.61.1821
Triple Number Windward/Leeward Low922.90.6501
Triple Number Windward/Leeward Medium687.50.8727
Triple Number Windward/Leeward High604.00.9934
Predominantly Upwind613.80.9775
Predominantly Downwind573.51.0462
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low715.80.8383
Triple Number AP Medium564.81.0623
Triple Number AP High507.61.1821
Triple Number Windward/Leeward Low964.90.6218
Triple Number Windward/Leeward Medium687.50.8727
Triple Number Windward/Leeward High604.00.9934
Single Number Predominant Upwind636.70.9423
Single Number Predominant Reaching563.41.0649
Single Number Predominant Downwind597.31.0045
Predominant Upwind - Low854.40.7023
Predominant Upwind - Low/Med663.80.9039
Predominant Upwind - Medium597.51.0043
Predominant Upwind - Med/High562.81.0661
Predominant Upwind - High543.71.1036
Predominant Downwind Low872.10.6880
Predominant Downwind Low/Med648.10.9258
Predominant Downwind Medium555.01.0810
Predominant Downwind Med/High493.71.2153
Predominant Downwind High448.11.3389
Predominant Reaching Low766.70.7826
Predominant Reaching Low/Med595.51.0076
Predominant Reaching Medium531.41.1292
Predominant Reaching Med/High488.61.2279
Predominant Reaching High456.81.3135
SA/DSPL Upwind24.66SA/DSPL Downwind49.35
Scoring OptionTODTOT
5-Band Windward/Leeward Low1078.70.5562
5-Band Windward/Leeward Low/Med792.30.7573
5-Band Windward/Leeward Medium676.40.8871
5-Band Windward/Leeward Med/High613.10.9786
5-Band Windward/Leeward High578.91.0364
Windward/Leeward 60-40 Low1077.50.5568
Windward/Leeward 60-40 Low/Med799.20.7508
Windward/Leeward 60-40 Medium690.60.8688
Windward/Leeward 60-40 Med/High633.80.9466
Windward/Leeward 60-40 High605.10.9916
5-Band AP Low790.00.7595
5-Band AP Low/Med631.10.9507
5-Band AP Medium557.71.0758
5-Band AP Med/High514.91.1653
5-Band AP High487.21.2314
5-Band SF Bay Tour - Low925.50.6483
5-Band SF Bay Tour - Low/Med756.90.7927
5-Band SF Bay Tour - Medium654.70.9165
5-Band SF Bay Tour - Med/High598.71.0021
5-Band SF Bay Tour - High566.01.0601
Chicago-Mac Upwind0.9170
Chicago-Mac All Purpose0.9446
Chicago-Mac Downwind0.9672
Bayview-Mac Cove Island0.6972
Bayview-Mac Shore0.7029
Harvest Moon Regatta494.01.2146
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance616.30.9735
Triple Number Coastal/Long Distance Low715.70.8383
Triple Number Coastal/Long Distance Medium564.81.0624
Triple Number Coastal/Long Distance High507.61.1821
Triple Number Windward/Leeward Low922.90.6501
Triple Number Windward/Leeward Medium687.50.8727
Triple Number Windward/Leeward High604.00.9934
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1539.91023.7775.2653.2586.0549.0518.0467.3442.3
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance616.30.9735
Triple Number Coastal/Long Distance Low715.70.8383
Triple Number Coastal/Long Distance Medium564.81.0624
Triple Number Coastal/Long Distance High507.61.1821
Triple Number Windward/Leeward Low922.90.6501
Triple Number Windward/Leeward Medium687.50.8727
Triple Number Windward/Leeward High604.00.9934
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1539.91023.7775.2653.2586.0549.0518.0467.3442.3
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance616.3
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1539.91023.7775.2653.2586.0549.0518.0467.3442.3
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low715.70.8383
Triple Number Coastal/Long Distance Medium564.81.0624
Triple Number Coastal/Long Distance High507.61.1821
Triple Number Windward/Leeward Low922.90.6501
Triple Number Windward/Leeward Medium687.50.8727
Triple Number Windward/Leeward High604.00.9934
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating610.10.9834
FinRating, kevyt tuuli1059.30.9440
FinRating, kova tuuli488.51.0235
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low715.70.8383
Triple Number Coastal/Long Distance Medium564.81.0624
Triple Number Coastal/Long Distance High507.61.1821
Triple Number Windward/Leeward Low922.90.6501
Triple Number Windward/Leeward Medium687.50.8727
Triple Number Windward/Leeward High604.00.9934
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9735
Triple Number Coastal/Long Distance Low0.8383
Triple Number Coastal/Long Distance Medium1.0624
Triple Number Coastal/Long Distance High1.1821
Triple Number Windward/Leeward Low0.6501
Triple Number Windward/Leeward Medium0.8727
Triple Number Windward/Leeward High0.9934
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1539.91023.7775.2653.2586.0549.0518.0467.3442.3
For information
General Purpose Handicap (GPH)634.3
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance616.30.9735
Triple Number Coastal/Long Distance Low715.70.8383
Triple Number Coastal/Long Distance Medium564.81.0624
Triple Number Coastal/Long Distance High507.61.1821
Triple Number Windward/Leeward Low922.90.6501
Triple Number Windward/Leeward Medium687.50.8727
Triple Number Windward/Leeward High604.00.9934
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1539.91023.7775.2653.2586.0549.0518.0467.3442.3
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low715.70.8383
Triple Number Coastal/Long Distance Medium564.81.0624
Triple Number Coastal/Long Distance High507.61.1821
Triple Number Windward/Leeward Low922.90.6501
Triple Number Windward/Leeward Medium687.50.8727
Triple Number Windward/Leeward High604.00.9934
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance616.30.9735
Triple Number Coastal/Long Distance Low715.70.8383
Triple Number Coastal/Long Distance Medium564.81.0624
Triple Number Coastal/Long Distance High507.61.1821
Triple Number Windward/Leeward Low922.90.6501
Triple Number Windward/Leeward Medium687.50.8727
Triple Number Windward/Leeward High604.00.9934
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1539.91023.7775.2653.2586.0549.0518.0467.3442.3
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance616.30.9735
Triple Number Coastal/Long Distance Low715.70.8383
Triple Number Coastal/Long Distance Medium564.81.0624
Triple Number Coastal/Long Distance High507.61.1821
Triple Number Windward/Leeward Low922.90.6501
Triple Number Windward/Leeward Medium687.50.8727
Triple Number Windward/Leeward High604.00.9934
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1539.91023.7775.2653.2586.0549.0518.0467.3442.3
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low715.7
Triple Number Coastal/Long Distance Medium564.8
Triple Number Coastal/Long Distance High507.6
Triple Number Windward/Leeward Low922.9
Triple Number Windward/Leeward Medium687.5
Triple Number Windward/Leeward High604.0
Predominantly Upwind613.8
Predominantly Downwind573.5
Predominantly Reaching551.9
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance616.30.9735
Triple Number Coastal/Long Distance Low715.70.8383
Triple Number Coastal/Long Distance Medium564.81.0624
Triple Number Coastal/Long Distance High507.61.1821
Triple Number Windward/Leeward Low922.90.6501
Triple Number Windward/Leeward Medium687.50.8727
Triple Number Windward/Leeward High604.00.9934
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1539.91023.7775.2653.2586.0549.0518.0467.3442.3
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8383
Triple Number Coastal/Long Distance Medium1.0624
Triple Number Coastal/Long Distance High1.1821
Triple Number Windward/Leeward Low0.6501
Triple Number Windward/Leeward Medium0.8727
Triple Number Windward/Leeward High0.9934
Coastal/Long Distance0.9735
Predominantly Upwind0.9775
Predominantly Downwind1.0462
For information
General Purpose Handicap (GPH)634.3
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0569
Distanseseilas Trippeltall svak vind0.8383
Distanseseilas Trippeltall mellomvind1.0624
Distanseseilas Trippeltall sterk vind1.1821
Pølsebane Trippeltall svak vind0.6501
Pølsebane Trippeltall mellomvind0.8727
Pølsebane Trippeltall sterk vind0.9934
Motvind Singeltall0.9775
Medvind Singeltall1.0462
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low715.70.8383
Triple Number Coastal/Long Distance Medium564.81.0624
Triple Number Coastal/Long Distance High507.61.1821
Triple Number Windward/Leeward Low922.90.6501
Triple Number Windward/Leeward Medium687.50.8727
Triple Number Windward/Leeward High604.00.9934
Coastal/Long Distance616.30.9735
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind613.80.9775
Predominantly Downwind573.51.0462
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore556.21.0788
Cape Doctor Coastal469.41.2782
Triple Number Coastal/Long Distance Low715.70.8383
Triple Number Coastal/Long Distance Medium564.81.0624
Triple Number Coastal/Long Distance High507.61.1821
Triple Number Windward/Leeward Low922.90.6501
Triple Number Windward/Leeward Medium687.50.8727
Triple Number Windward/Leeward High604.00.9934
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8383
Triple Number Coastal/Long Distance Medium1.0624
Triple Number Coastal/Long Distance High1.1821
Triple Number Windward/Leeward Low0.6501
Triple Number Windward/Leeward Medium0.8727
Triple Number Windward/Leeward High0.9934
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8383
Triple Number Coastal/Long Distance Medium1.0624
Triple Number Coastal/Long Distance High1.1821
Triple Number Windward/Leeward Low0.6501
Triple Number Windward/Leeward Medium0.8727
Triple Number Windward/Leeward High0.9934
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance616.30.9735
Triple Number Coastal/Long Distance Low715.70.8383
Triple Number Coastal/Long Distance Medium564.81.0624
Triple Number Coastal/Long Distance High507.61.1821
Triple Number Windward/Leeward Low922.90.6501
Triple Number Windward/Leeward Medium687.50.8727
Triple Number Windward/Leeward High604.00.9934
Predominantly Upwind613.80.9775
Predominantly Downwind573.51.0462
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1539.91023.7775.2653.2586.0549.0518.0467.3442.3
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance616.30.9735
Triple Number Coastal/Long Distance Low715.70.8383
Triple Number Coastal/Long Distance Medium564.81.0624
Triple Number Coastal/Long Distance High507.61.1821
Triple Number Windward/Leeward Low922.90.6501
Triple Number Windward/Leeward Medium687.50.8727
Triple Number Windward/Leeward High604.00.9934
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1539.91023.7775.2653.2586.0549.0518.0467.3442.3
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low715.80.8383
Triple Number AP Medium564.81.0623
Triple Number AP High507.61.1821
Triple Number Windward/Leeward Low964.90.6218
Triple Number Windward/Leeward Medium687.50.8727
Triple Number Windward/Leeward High604.00.9934
Single Number Predominant Upwind636.70.9423
Single Number Predominant Reaching563.41.0649
Single Number Predominant Downwind597.31.0045
Predominant Upwind - Low854.40.7023
Predominant Upwind - Low/Med663.80.9039
Predominant Upwind - Medium597.51.0043
Predominant Upwind - Med/High562.81.0661
Predominant Upwind - High543.71.1036
Predominant Downwind Low872.10.6880
Predominant Downwind Low/Med648.10.9258
Predominant Downwind Medium555.01.0810
Predominant Downwind Med/High493.71.2153
Predominant Downwind High448.11.3389
Predominant Reaching Low766.70.7826
Predominant Reaching Low/Med595.51.0076
Predominant Reaching Medium531.41.1292
Predominant Reaching Med/High488.61.2279
Predominant Reaching High456.81.3135
SA/DSPL Upwind24.66SA/DSPL Downwind49.35
Scoring OptionTODTOT
5-Band Windward/Leeward Low1078.70.5562
5-Band Windward/Leeward Low/Med792.30.7573
5-Band Windward/Leeward Medium676.40.8871
5-Band Windward/Leeward Med/High613.10.9786
5-Band Windward/Leeward High578.91.0364
Windward/Leeward 60-40 Low1077.50.5568
Windward/Leeward 60-40 Low/Med799.20.7508
Windward/Leeward 60-40 Medium690.60.8688
Windward/Leeward 60-40 Med/High633.80.9466
Windward/Leeward 60-40 High605.10.9916
5-Band AP Low790.00.7595
5-Band AP Low/Med631.10.9507
5-Band AP Medium557.71.0758
5-Band AP Med/High514.91.1653
5-Band AP High487.21.2314
5-Band SF Bay Tour - Low925.50.6483
5-Band SF Bay Tour - Low/Med756.90.7927
5-Band SF Bay Tour - Medium654.70.9165
5-Band SF Bay Tour - Med/High598.71.0021
5-Band SF Bay Tour - High566.01.0601
Chicago-Mac Upwind0.9170
Chicago-Mac All Purpose0.9446
Chicago-Mac Downwind0.9672
Bayview-Mac Cove Island0.6972
Bayview-Mac Shore0.7029
Harvest Moon Regatta494.01.2146
Club Certificate2025
Sgt. PepperNOR 596
Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassX-99MeasurementHINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA10.000Max. Beam2.990Draft1.792Displacement3,020Wetted area18.49IMS L8.655LSM08.188Acc. length9.717Sink (kg/mm) 13.66
VCGD-0.030VCGM0.019RM Rated (kg·m) 59.5Limit of positive stability(°) N/AStability IndexN/ADefault crew weight518Declared crew weight480
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.310PBWPIPA0.0023
EDL1.060ST10.035ST20.140
ST30.140ST40.085ST50.240
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays1CheckstaysSpreaders2Rotating mastNo
P12.500IG11.325ISP11.325MDT10.060MDL10.136MDT20.060MDL20.080TL2.100MW0.136GO0.136
E4.500J3.435BAS1.660FSD0.000SFJ0.000SPL3.610WPLTPS0.000BD0.000MWT77.60MCG3.950
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.030Flotation Date01/01/2015
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
Sgt. PepperNOR 596
Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment330-2018061109300.140.861.652.793.6932.6011/06/2018Aktiv
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment625-2021081009280.070.520.931.692.433.1711.50YesNo 19.1110/08/2021625-2021041618070.000.000.901.692.443.1511.51YesNo 18.9616/04/2021
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment469-20210426125211.0611.0611.068.046.3070.8926/04/2021468-20230825142110.9010.9010.906.236.3056.7225/08/2023
CRUISER/RACER REQUIREMENTS*
Accommodation length9.7 mTable area0.44 m²Headroom1.68 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity74 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity44 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.