Non Spin/HSFClub Certificate2025
Lady SFIN5826
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
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°40.1°38.8°38.5°38.5°39.1°40.8°
Beat VMG2.082.913.594.084.354.434.474.444.30
52°3.264.455.345.916.186.286.336.366.31
60°3.474.705.576.086.346.486.546.606.58
75°3.594.845.726.226.526.746.897.037.10
90°3.464.735.666.216.566.857.117.467.66
110°3.024.265.296.026.486.867.227.988.62
120°2.824.015.055.846.346.737.127.949.06
135°2.413.514.535.376.016.436.797.578.55
150°2.023.013.964.815.536.086.467.177.96
Run VMG1.752.613.444.224.935.566.066.757.43
Gybe Angles149.6°149.6°153.7°160.9°168.5°173.6°178.1°179.0°179.5°
APH ToD:667.5CDL: 6.898APH ToT: 0.8989CertNo:
BOAT
ClassJP24DesignerJari PakkanenBuilderAge date01/1988Series date01/1983Offset filefin5826.offData fileFIN5826
HULL
Length Overall7.800 mMaximum Beam2.500 mDraft1.520 mDisplacement1,660 kgDLR4.6808IMS DivisionSportboatDynamic Allowance0.320%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameter0.385m
CREW
Maximum weight250 kg(declared)Minimum weight130 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail16.5416.87Headsail Luffed15.4015.40Headsail FlyingSymmetricAsymmetric
STORM SAIL AREAS (m²)
Trysail4.93Storm Jib3.40Heavy Weather Jib9.17
SAIL LIMITS
Headsails5
✱ Zero set flying
Spinnakers0
✱ 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.
Non Spin/HSFClub Certificate2025
Lady SFIN5826
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
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 VMG1730.41237.81003.4882.1828.4812.4806.1810.5837.0
52°1104.7808.8673.7609.2582.7573.0568.6565.8570.2
60°1037.2766.6646.3592.2567.4555.7550.5545.4546.8
75°1004.0743.7629.1579.1552.2534.2522.9512.0507.3
90°1039.5761.8636.6579.6549.2525.7506.5482.6470.1
110°1191.7845.9681.1597.9555.9525.0498.4451.1417.6
120°1278.6897.5713.4616.9567.8535.1505.9453.6397.3
135°1493.61024.3794.7670.3599.3559.9529.9475.7421.0
150°1779.21195.5908.1748.6650.9592.1557.0502.4452.4
Run VMG2057.51380.41045.2853.6730.6647.7594.0533.3484.3
Selected Courses
Windward / Leeward1891.01309.11024.3867.9779.5730.0700.1671.9660.7
All purpose1418.51000.2799.0693.9637.5605.8585.1558.3541.6
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward824.90.7273
All purpose667.50.8989
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low899.60.6670
Triple Number Coastal/Long Distance Medium661.80.9066
Triple Number Coastal/Long Distance High580.21.0341
Triple Number Windward/Leeward Low1166.60.5143
Triple Number Windward/Leeward Medium817.00.7344
Triple Number Windward/Leeward High697.00.8608
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.50.8225
Triple Number Coastal/Long Distance Low899.60.6670
Triple Number Coastal/Long Distance Medium661.80.9066
Triple Number Coastal/Long Distance High580.21.0341
Triple Number Windward/Leeward Low1166.60.5143
Triple Number Windward/Leeward Medium817.00.7344
Triple Number Windward/Leeward High697.00.8608
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2044.21316.2964.7782.7681.0629.5591.4530.9507.4
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6582
Downwind "popa"0.7260
70% up, 30% down "Ilhabela"0.6772
30% up, 70% down "Ilhabela-inverso"0.7043
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low899.60.6670
Triple Number Coastal/Long Distance Medium661.80.9066
Triple Number Coastal/Long Distance High580.21.0341
Triple Number Windward/Leeward Low1166.60.5143
Triple Number Windward/Leeward Medium817.00.7344
Triple Number Windward/Leeward High697.00.8608
Predominantly Upwind711.30.8435
Predominantly Downwind697.00.8609
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low899.60.6670
Triple Number AP Medium661.90.9065
Triple Number AP High580.21.0341
Triple Number Windward/Leeward Low1223.80.4903
Triple Number Windward/Leeward Medium817.00.7344
Triple Number Windward/Leeward High697.00.8608
Single Number Predominant Upwind743.90.8065
Single Number Predominant Reaching670.90.8943
Single Number Predominant Downwind735.90.8153
Predominant Upwind - Low1061.90.5650
Predominant Upwind - Low/Med788.60.7609
Predominant Upwind - Medium683.30.8781
Predominant Upwind - Med/High636.20.9431
Predominant Upwind - High621.20.9659
Predominant Downwind Low1155.30.5194
Predominant Downwind Low/Med813.90.7372
Predominant Downwind Medium665.80.9012
Predominant Downwind Med/High578.01.0380
Predominant Downwind High533.21.1253
Predominant Reaching Low981.80.6111
Predominant Reaching Low/Med722.30.8307
Predominant Reaching Medium617.20.9721
Predominant Reaching Med/High558.11.0750
Predominant Reaching High527.31.1378
SA/DSPL Upwind22.74SA/DSPL Downwind22.74
Scoring OptionTODTOT
5-Band Windward/Leeward Low1384.10.4335
5-Band Windward/Leeward Low/Med975.00.6154
5-Band Windward/Leeward Medium799.70.7503
5-Band Windward/Leeward Med/High707.10.8486
5-Band Windward/Leeward High674.80.8891
Windward/Leeward 60-40 Low1367.80.4387
Windward/Leeward 60-40 Low/Med973.80.6161
Windward/Leeward 60-40 Medium809.20.7414
Windward/Leeward 60-40 Med/High727.60.8246
Windward/Leeward 60-40 High702.70.8538
5-Band AP Low1019.40.5886
5-Band AP Low/Med767.70.7815
5-Band AP Medium650.60.9222
5-Band AP Med/High588.51.0196
5-Band AP High560.01.0714
5-Band SF Bay Tour - Low1177.10.5097
5-Band SF Bay Tour - Low/Med929.30.6457
5-Band SF Bay Tour - Medium771.60.7776
5-Band SF Bay Tour - Med/High691.90.8672
5-Band SF Bay Tour - High662.90.9051
Chicago-Mac Upwind0.7805
Chicago-Mac All Purpose0.7850
Chicago-Mac Downwind0.7803
Bayview-Mac Cove Island0.5516
Bayview-Mac Shore0.5579
Harvest Moon Regatta573.21.0467
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.50.8225
Triple Number Coastal/Long Distance Low899.60.6670
Triple Number Coastal/Long Distance Medium661.80.9066
Triple Number Coastal/Long Distance High580.21.0341
Triple Number Windward/Leeward Low1166.60.5143
Triple Number Windward/Leeward Medium817.00.7344
Triple Number Windward/Leeward High697.00.8608
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2044.21316.2964.7782.7681.0629.5591.4530.9507.4
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.50.8225
Triple Number Coastal/Long Distance Low899.60.6670
Triple Number Coastal/Long Distance Medium661.80.9066
Triple Number Coastal/Long Distance High580.21.0341
Triple Number Windward/Leeward Low1166.60.5143
Triple Number Windward/Leeward Medium817.00.7344
Triple Number Windward/Leeward High697.00.8608
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2044.21316.2964.7782.7681.0629.5591.4530.9507.4
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance729.5
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2044.21316.2964.7782.7681.0629.5591.4530.9507.4
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low899.60.6670
Triple Number Coastal/Long Distance Medium661.80.9066
Triple Number Coastal/Long Distance High580.21.0341
Triple Number Windward/Leeward Low1166.60.5143
Triple Number Windward/Leeward Medium817.00.7344
Triple Number Windward/Leeward High697.00.8608
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating729.50.8225
FinRating, kevyt tuuli1366.30.7319
FinRating, kova tuuli562.60.8887
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low899.60.6670
Triple Number Coastal/Long Distance Medium661.80.9066
Triple Number Coastal/Long Distance High580.21.0341
Triple Number Windward/Leeward Low1166.60.5143
Triple Number Windward/Leeward Medium817.00.7344
Triple Number Windward/Leeward High697.00.8608
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8225
Triple Number Coastal/Long Distance Low0.6670
Triple Number Coastal/Long Distance Medium0.9066
Triple Number Coastal/Long Distance High1.0341
Triple Number Windward/Leeward Low0.5143
Triple Number Windward/Leeward Medium0.7344
Triple Number Windward/Leeward High0.8608
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2044.21316.2964.7782.7681.0629.5591.4530.9507.4
For information
General Purpose Handicap (GPH)757.7
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.50.8225
Triple Number Coastal/Long Distance Low899.60.6670
Triple Number Coastal/Long Distance Medium661.80.9066
Triple Number Coastal/Long Distance High580.21.0341
Triple Number Windward/Leeward Low1166.60.5143
Triple Number Windward/Leeward Medium817.00.7344
Triple Number Windward/Leeward High697.00.8608
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2044.21316.2964.7782.7681.0629.5591.4530.9507.4
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low899.60.6670
Triple Number Coastal/Long Distance Medium661.80.9066
Triple Number Coastal/Long Distance High580.21.0341
Triple Number Windward/Leeward Low1166.60.5143
Triple Number Windward/Leeward Medium817.00.7344
Triple Number Windward/Leeward High697.00.8608
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.50.8225
Triple Number Coastal/Long Distance Low899.60.6670
Triple Number Coastal/Long Distance Medium661.80.9066
Triple Number Coastal/Long Distance High580.21.0341
Triple Number Windward/Leeward Low1166.60.5143
Triple Number Windward/Leeward Medium817.00.7344
Triple Number Windward/Leeward High697.00.8608
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2044.21316.2964.7782.7681.0629.5591.4530.9507.4
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.50.8225
Triple Number Coastal/Long Distance Low899.60.6670
Triple Number Coastal/Long Distance Medium661.80.9066
Triple Number Coastal/Long Distance High580.21.0341
Triple Number Windward/Leeward Low1166.60.5143
Triple Number Windward/Leeward Medium817.00.7344
Triple Number Windward/Leeward High697.00.8608
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2044.21316.2964.7782.7681.0629.5591.4530.9507.4
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low899.6
Triple Number Coastal/Long Distance Medium661.8
Triple Number Coastal/Long Distance High580.2
Triple Number Windward/Leeward Low1166.6
Triple Number Windward/Leeward Medium817.0
Triple Number Windward/Leeward High697.0
Predominantly Upwind711.3
Predominantly Downwind697.0
Predominantly Reaching658.1
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.50.8225
Triple Number Coastal/Long Distance Low899.60.6670
Triple Number Coastal/Long Distance Medium661.80.9066
Triple Number Coastal/Long Distance High580.21.0341
Triple Number Windward/Leeward Low1166.60.5143
Triple Number Windward/Leeward Medium817.00.7344
Triple Number Windward/Leeward High697.00.8608
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2044.21316.2964.7782.7681.0629.5591.4530.9507.4
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6670
Triple Number Coastal/Long Distance Medium0.9066
Triple Number Coastal/Long Distance High1.0341
Triple Number Windward/Leeward Low0.5143
Triple Number Windward/Leeward Medium0.7344
Triple Number Windward/Leeward High0.8608
Coastal/Long Distance0.8225
Predominantly Upwind0.8435
Predominantly Downwind0.8609
For information
General Purpose Handicap (GPH)757.7
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.8989
Distanseseilas Trippeltall svak vind0.6670
Distanseseilas Trippeltall mellomvind0.9066
Distanseseilas Trippeltall sterk vind1.0341
Pølsebane Trippeltall svak vind0.5143
Pølsebane Trippeltall mellomvind0.7344
Pølsebane Trippeltall sterk vind0.8608
Motvind Singeltall0.8435
Medvind Singeltall0.8609
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low899.60.6670
Triple Number Coastal/Long Distance Medium661.80.9066
Triple Number Coastal/Long Distance High580.21.0341
Triple Number Windward/Leeward Low1166.60.5143
Triple Number Windward/Leeward Medium817.00.7344
Triple Number Windward/Leeward High697.00.8608
Coastal/Long Distance729.50.8225
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind711.30.8435
Predominantly Downwind697.00.8609
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore664.00.9036
Cape Doctor Coastal546.61.0977
Triple Number Coastal/Long Distance Low899.60.6670
Triple Number Coastal/Long Distance Medium661.80.9066
Triple Number Coastal/Long Distance High580.21.0341
Triple Number Windward/Leeward Low1166.60.5143
Triple Number Windward/Leeward Medium817.00.7344
Triple Number Windward/Leeward High697.00.8608
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6670
Triple Number Coastal/Long Distance Medium0.9066
Triple Number Coastal/Long Distance High1.0341
Triple Number Windward/Leeward Low0.5143
Triple Number Windward/Leeward Medium0.7344
Triple Number Windward/Leeward High0.8608
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.6670
Triple Number Coastal/Long Distance Medium0.9066
Triple Number Coastal/Long Distance High1.0341
Triple Number Windward/Leeward Low0.5143
Triple Number Windward/Leeward Medium0.7344
Triple Number Windward/Leeward High0.8608
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.50.8225
Triple Number Coastal/Long Distance Low899.60.6670
Triple Number Coastal/Long Distance Medium661.80.9066
Triple Number Coastal/Long Distance High580.21.0341
Triple Number Windward/Leeward Low1166.60.5143
Triple Number Windward/Leeward Medium817.00.7344
Triple Number Windward/Leeward High697.00.8608
Predominantly Upwind711.30.8435
Predominantly Downwind697.00.8609
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2044.21316.2964.7782.7681.0629.5591.4530.9507.4
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance729.50.8225
Triple Number Coastal/Long Distance Low899.60.6670
Triple Number Coastal/Long Distance Medium661.80.9066
Triple Number Coastal/Long Distance High580.21.0341
Triple Number Windward/Leeward Low1166.60.5143
Triple Number Windward/Leeward Medium817.00.7344
Triple Number Windward/Leeward High697.00.8608
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2044.21316.2964.7782.7681.0629.5591.4530.9507.4
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low899.60.6670
Triple Number AP Medium661.90.9065
Triple Number AP High580.21.0341
Triple Number Windward/Leeward Low1223.80.4903
Triple Number Windward/Leeward Medium817.00.7344
Triple Number Windward/Leeward High697.00.8608
Single Number Predominant Upwind743.90.8065
Single Number Predominant Reaching670.90.8943
Single Number Predominant Downwind735.90.8153
Predominant Upwind - Low1061.90.5650
Predominant Upwind - Low/Med788.60.7609
Predominant Upwind - Medium683.30.8781
Predominant Upwind - Med/High636.20.9431
Predominant Upwind - High621.20.9659
Predominant Downwind Low1155.30.5194
Predominant Downwind Low/Med813.90.7372
Predominant Downwind Medium665.80.9012
Predominant Downwind Med/High578.01.0380
Predominant Downwind High533.21.1253
Predominant Reaching Low981.80.6111
Predominant Reaching Low/Med722.30.8307
Predominant Reaching Medium617.20.9721
Predominant Reaching Med/High558.11.0750
Predominant Reaching High527.31.1378
SA/DSPL Upwind22.74SA/DSPL Downwind22.74
Scoring OptionTODTOT
5-Band Windward/Leeward Low1384.10.4335
5-Band Windward/Leeward Low/Med975.00.6154
5-Band Windward/Leeward Medium799.70.7503
5-Band Windward/Leeward Med/High707.10.8486
5-Band Windward/Leeward High674.80.8891
Windward/Leeward 60-40 Low1367.80.4387
Windward/Leeward 60-40 Low/Med973.80.6161
Windward/Leeward 60-40 Medium809.20.7414
Windward/Leeward 60-40 Med/High727.60.8246
Windward/Leeward 60-40 High702.70.8538
5-Band AP Low1019.40.5886
5-Band AP Low/Med767.70.7815
5-Band AP Medium650.60.9222
5-Band AP Med/High588.51.0196
5-Band AP High560.01.0714
5-Band SF Bay Tour - Low1177.10.5097
5-Band SF Bay Tour - Low/Med929.30.6457
5-Band SF Bay Tour - Medium771.60.7776
5-Band SF Bay Tour - Med/High691.90.8672
5-Band SF Bay Tour - High662.90.9051
Chicago-Mac Upwind0.7805
Chicago-Mac All Purpose0.7850
Chicago-Mac Downwind0.7803
Bayview-Mac Cove Island0.5516
Bayview-Mac Shore0.5579
Harvest Moon Regatta573.21.0467
Non Spin/HSFClub Certificate2025
Lady SFIN5826
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJP24MeasurementHINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA7.800Max. Beam2.500Draft1.520Displacement1,660Wetted area12.71IMS L7.297LSM07.078Acc. length8.032Sink (kg/mm) 9.81
VCGD-0.044VCGM0.005RM Rated (kg·m) 29.9Limit of positive stability(°) N/AStability IndexN/ADefault crew weight420Declared crew weight250
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.385PBW0.115PIPA0.0042
PSD0.025PHD0.069PHL0.115
PSA15.0°ESL1.020
ST10.011ST20.050ST30.080
ST40.047ST50.180
RIG
Forestay tensionFixedInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders2Rotating mastNo
P8.800IG8.240ISP8.260MDT10.082MDL10.133MDT2MDL2TLMWGO
E3.200J2.650BAS1.000FSDFoilSFJSPL2.650WPLTPS3.500BDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date31/03/2016
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Non Spin/HSFClub Certificate2025
Lady SFIN5826
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.120.641.172.022.6716.5412/04/2021iso
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment10.060.510.981.942.933.897.88NoNo 15.40
CRUISER/RACER REQUIREMENTS*
Accommodation length8.0 mTable area0.33 m²Headroom1.40 mMinimum number of berths3Personal gear stowage0.12 m³Fresh water capacity30 lMinimum number of seats in cockpit3Food stowage0.18 m³Fuel capacity20 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.