Double HandedClub Certificate2025
Sun äitisFIN 9640
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 Angles42.1°42.1°40.2°38.9°38.6°38.5°38.9°39.8°41.7°
Beat VMG2.613.584.284.624.764.834.874.854.61
52°4.035.396.286.656.796.886.936.976.86
60°4.275.646.496.857.007.107.177.237.17
75°4.465.826.647.057.297.447.567.707.73
90°4.315.726.627.077.427.707.928.228.39
110°4.205.686.717.257.677.958.198.639.24
120°4.015.486.567.177.678.158.599.239.48
135°3.454.866.026.817.357.888.459.9411.57
150°2.824.075.226.196.887.397.909.1411.01
Run VMG2.443.534.525.386.116.697.178.129.53
Gybe Angles144.2°144.2°149.2°153.2°160.2°167.5°170.9°166.6°145.9°
APH ToD:568.7CDL: 8.196APH ToT: 1.0550CertNo:
BOAT
ClassMEAN MARINE 32DesignerJudel/VrolijkBuilderMagratheaAge date01/1996Series date01/1996Offset fileMM32.OFFData fileFIN9640
HULL
Length Overall9.590 mMaximum Beam3.288 mDraft1.996 mDisplacement2,892 kgDLR4.8647IMS DivisionCruiser/RacerDynamic Allowance0.080%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.380m
CREW
Maximum weight180 kg(declared)Minimum weight120 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail33.2934.05Headsail Luffed20.0020.00Headsail FlyingSymmetric59.2559.25Asymmetric
STORM SAIL AREAS (m²)
Trysail9.62Storm Jib7.01Heavy Weather Jib18.91
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.
Double HandedClub Certificate2025
Sun äitisFIN 9640
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 VMG1377.81005.6840.3778.6756.4745.4739.2742.2780.9
52°894.0668.4573.5541.6530.2523.6519.3516.6524.8
60°842.6638.0554.4525.4514.0507.1502.2498.0502.1
75°808.0618.1542.0510.9494.0483.9476.4467.7465.9
90°834.8629.4543.8509.0485.0467.3454.6437.9429.0
110°857.4633.9536.5496.4469.4453.0439.6417.2389.7
120°898.4656.8548.9502.4469.4441.5419.0389.9379.7
135°1043.2740.8597.9528.4489.7456.9425.9362.2311.0
150°1276.7883.6690.1581.7523.2487.4455.4393.8327.0
Run VMG1474.81020.3796.8669.3589.3537.8502.3443.2377.6
Selected Courses
Windward / Leeward1425.11013.0818.5724.0672.9641.6620.7592.7579.2
All purpose1073.6779.7645.7585.2552.4531.4515.4491.5478.4
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward699.20.8581
All purpose568.71.0550
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low712.70.8419
Triple Number Coastal/Long Distance Medium565.91.0603
Triple Number Coastal/Long Distance High510.41.1755
Triple Number Windward/Leeward Low915.80.6552
Triple Number Windward/Leeward Medium694.20.8643
Triple Number Windward/Leeward High615.40.9749
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance617.50.9716
Triple Number Coastal/Long Distance Low712.70.8419
Triple Number Coastal/Long Distance Medium565.91.0603
Triple Number Coastal/Long Distance High510.41.1755
Triple Number Windward/Leeward Low915.80.6552
Triple Number Windward/Leeward Medium694.20.8643
Triple Number Windward/Leeward High615.40.9749
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1518.91013.7771.7655.7589.8551.1518.8467.5454.8
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7490
Downwind "popa"0.9212
70% up, 30% down "Ilhabela"0.7935
30% up, 70% down "Ilhabela-inverso"0.8618
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low712.70.8419
Triple Number Coastal/Long Distance Medium565.91.0603
Triple Number Coastal/Long Distance High510.41.1755
Triple Number Windward/Leeward Low915.80.6552
Triple Number Windward/Leeward Medium694.20.8643
Triple Number Windward/Leeward High615.40.9749
Predominantly Upwind617.00.9724
Predominantly Downwind572.31.0484
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low712.70.8419
Triple Number AP Medium565.91.0602
Triple Number AP High510.41.1755
Triple Number Windward/Leeward Low957.30.6267
Triple Number Windward/Leeward Medium694.20.8643
Triple Number Windward/Leeward High615.40.9749
Single Number Predominant Upwind640.40.9369
Single Number Predominant Reaching562.21.0672
Single Number Predominant Downwind596.71.0056
Predominant Upwind - Low847.70.7078
Predominant Upwind - Low/Med663.80.9039
Predominant Upwind - Medium601.80.9971
Predominant Upwind - Med/High570.21.0522
Predominant Upwind - High557.11.0770
Predominant Downwind Low871.00.6889
Predominant Downwind Low/Med647.40.9267
Predominant Downwind Medium554.41.0823
Predominant Downwind Med/High491.71.2204
Predominant Downwind High448.11.3389
Predominant Reaching Low766.20.7831
Predominant Reaching Low/Med594.81.0088
Predominant Reaching Medium529.41.1333
Predominant Reaching Med/High486.21.2341
Predominant Reaching High457.51.3115
SA/DSPL Upwind26.16SA/DSPL Downwind45.43
Scoring OptionTODTOT
5-Band Windward/Leeward Low1067.70.5620
5-Band Windward/Leeward Low/Med792.30.7573
5-Band Windward/Leeward Medium683.90.8773
5-Band Windward/Leeward Med/High623.90.9617
5-Band Windward/Leeward High595.21.0080
Windward/Leeward 60-40 Low1065.60.5631
Windward/Leeward 60-40 Low/Med800.00.7500
Windward/Leeward 60-40 Medium699.80.8573
Windward/Leeward 60-40 Med/High647.60.9265
Windward/Leeward 60-40 High625.90.9587
5-Band AP Low788.00.7614
5-Band AP Low/Med630.30.9519
5-Band AP Medium559.01.0733
5-Band AP Med/High517.21.1602
5-Band AP High493.31.2162
5-Band SF Bay Tour - Low918.20.6535
5-Band SF Bay Tour - Low/Med757.70.7918
5-Band SF Bay Tour - Medium661.90.9065
5-Band SF Bay Tour - Med/High609.00.9852
5-Band SF Bay Tour - High582.41.0302
Chicago-Mac Upwind0.9130
Chicago-Mac All Purpose0.9434
Chicago-Mac Downwind0.9684
Bayview-Mac Cove Island0.6991
Bayview-Mac Shore0.7050
Harvest Moon Regatta488.51.2283
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance617.50.9716
Triple Number Coastal/Long Distance Low712.70.8419
Triple Number Coastal/Long Distance Medium565.91.0603
Triple Number Coastal/Long Distance High510.41.1755
Triple Number Windward/Leeward Low915.80.6552
Triple Number Windward/Leeward Medium694.20.8643
Triple Number Windward/Leeward High615.40.9749
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1518.91013.7771.7655.7589.8551.1518.8467.5454.8
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance617.50.9716
Triple Number Coastal/Long Distance Low712.70.8419
Triple Number Coastal/Long Distance Medium565.91.0603
Triple Number Coastal/Long Distance High510.41.1755
Triple Number Windward/Leeward Low915.80.6552
Triple Number Windward/Leeward Medium694.20.8643
Triple Number Windward/Leeward High615.40.9749
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1518.91013.7771.7655.7589.8551.1518.8467.5454.8
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance617.5
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1518.91013.7771.7655.7589.8551.1518.8467.5454.8
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low712.70.8419
Triple Number Coastal/Long Distance Medium565.91.0603
Triple Number Coastal/Long Distance High510.41.1755
Triple Number Windward/Leeward Low915.80.6552
Triple Number Windward/Leeward Medium694.20.8643
Triple Number Windward/Leeward High615.40.9749
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating617.50.9716
FinRating, kevyt tuuli1049.60.9528
FinRating, kova tuuli496.71.0065
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low712.70.8419
Triple Number Coastal/Long Distance Medium565.91.0603
Triple Number Coastal/Long Distance High510.41.1755
Triple Number Windward/Leeward Low915.80.6552
Triple Number Windward/Leeward Medium694.20.8643
Triple Number Windward/Leeward High615.40.9749
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9716
Triple Number Coastal/Long Distance Low0.8419
Triple Number Coastal/Long Distance Medium1.0603
Triple Number Coastal/Long Distance High1.1755
Triple Number Windward/Leeward Low0.6552
Triple Number Windward/Leeward Medium0.8643
Triple Number Windward/Leeward High0.9749
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1518.91013.7771.7655.7589.8551.1518.8467.5454.8
For information
General Purpose Handicap (GPH)634.5
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance617.50.9716
Triple Number Coastal/Long Distance Low712.70.8419
Triple Number Coastal/Long Distance Medium565.91.0603
Triple Number Coastal/Long Distance High510.41.1755
Triple Number Windward/Leeward Low915.80.6552
Triple Number Windward/Leeward Medium694.20.8643
Triple Number Windward/Leeward High615.40.9749
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1518.91013.7771.7655.7589.8551.1518.8467.5454.8
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low712.70.8419
Triple Number Coastal/Long Distance Medium565.91.0603
Triple Number Coastal/Long Distance High510.41.1755
Triple Number Windward/Leeward Low915.80.6552
Triple Number Windward/Leeward Medium694.20.8643
Triple Number Windward/Leeward High615.40.9749
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance617.50.9716
Triple Number Coastal/Long Distance Low712.70.8419
Triple Number Coastal/Long Distance Medium565.91.0603
Triple Number Coastal/Long Distance High510.41.1755
Triple Number Windward/Leeward Low915.80.6552
Triple Number Windward/Leeward Medium694.20.8643
Triple Number Windward/Leeward High615.40.9749
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1518.91013.7771.7655.7589.8551.1518.8467.5454.8
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance617.50.9716
Triple Number Coastal/Long Distance Low712.70.8419
Triple Number Coastal/Long Distance Medium565.91.0603
Triple Number Coastal/Long Distance High510.41.1755
Triple Number Windward/Leeward Low915.80.6552
Triple Number Windward/Leeward Medium694.20.8643
Triple Number Windward/Leeward High615.40.9749
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1518.91013.7771.7655.7589.8551.1518.8467.5454.8
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low712.7
Triple Number Coastal/Long Distance Medium565.9
Triple Number Coastal/Long Distance High510.4
Triple Number Windward/Leeward Low915.8
Triple Number Windward/Leeward Medium694.2
Triple Number Windward/Leeward High615.4
Predominantly Upwind617.0
Predominantly Downwind572.3
Predominantly Reaching550.0
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance617.50.9716
Triple Number Coastal/Long Distance Low712.70.8419
Triple Number Coastal/Long Distance Medium565.91.0603
Triple Number Coastal/Long Distance High510.41.1755
Triple Number Windward/Leeward Low915.80.6552
Triple Number Windward/Leeward Medium694.20.8643
Triple Number Windward/Leeward High615.40.9749
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1518.91013.7771.7655.7589.8551.1518.8467.5454.8
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8419
Triple Number Coastal/Long Distance Medium1.0603
Triple Number Coastal/Long Distance High1.1755
Triple Number Windward/Leeward Low0.6552
Triple Number Windward/Leeward Medium0.8643
Triple Number Windward/Leeward High0.9749
Coastal/Long Distance0.9716
Predominantly Upwind0.9724
Predominantly Downwind1.0484
For information
General Purpose Handicap (GPH)634.5
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0550
Distanseseilas Trippeltall svak vind0.8419
Distanseseilas Trippeltall mellomvind1.0603
Distanseseilas Trippeltall sterk vind1.1755
Pølsebane Trippeltall svak vind0.6552
Pølsebane Trippeltall mellomvind0.8643
Pølsebane Trippeltall sterk vind0.9749
Motvind Singeltall0.9724
Medvind Singeltall1.0484
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low712.70.8419
Triple Number Coastal/Long Distance Medium565.91.0603
Triple Number Coastal/Long Distance High510.41.1755
Triple Number Windward/Leeward Low915.80.6552
Triple Number Windward/Leeward Medium694.20.8643
Triple Number Windward/Leeward High615.40.9749
Coastal/Long Distance617.50.9716
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind617.00.9724
Predominantly Downwind572.31.0484
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore583.31.0287
Cape Doctor Coastal482.41.2439
Triple Number Coastal/Long Distance Low712.70.8419
Triple Number Coastal/Long Distance Medium565.91.0603
Triple Number Coastal/Long Distance High510.41.1755
Triple Number Windward/Leeward Low915.80.6552
Triple Number Windward/Leeward Medium694.20.8643
Triple Number Windward/Leeward High615.40.9749
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8419
Triple Number Coastal/Long Distance Medium1.0603
Triple Number Coastal/Long Distance High1.1755
Triple Number Windward/Leeward Low0.6552
Triple Number Windward/Leeward Medium0.8643
Triple Number Windward/Leeward High0.9749
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8419
Triple Number Coastal/Long Distance Medium1.0603
Triple Number Coastal/Long Distance High1.1755
Triple Number Windward/Leeward Low0.6552
Triple Number Windward/Leeward Medium0.8643
Triple Number Windward/Leeward High0.9749
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance617.50.9716
Triple Number Coastal/Long Distance Low712.70.8419
Triple Number Coastal/Long Distance Medium565.91.0603
Triple Number Coastal/Long Distance High510.41.1755
Triple Number Windward/Leeward Low915.80.6552
Triple Number Windward/Leeward Medium694.20.8643
Triple Number Windward/Leeward High615.40.9749
Predominantly Upwind617.00.9724
Predominantly Downwind572.31.0484
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1518.91013.7771.7655.7589.8551.1518.8467.5454.8
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance617.50.9716
Triple Number Coastal/Long Distance Low712.70.8419
Triple Number Coastal/Long Distance Medium565.91.0603
Triple Number Coastal/Long Distance High510.41.1755
Triple Number Windward/Leeward Low915.80.6552
Triple Number Windward/Leeward Medium694.20.8643
Triple Number Windward/Leeward High615.40.9749
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1518.91013.7771.7655.7589.8551.1518.8467.5454.8
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low712.70.8419
Triple Number AP Medium565.91.0602
Triple Number AP High510.41.1755
Triple Number Windward/Leeward Low957.30.6267
Triple Number Windward/Leeward Medium694.20.8643
Triple Number Windward/Leeward High615.40.9749
Single Number Predominant Upwind640.40.9369
Single Number Predominant Reaching562.21.0672
Single Number Predominant Downwind596.71.0056
Predominant Upwind - Low847.70.7078
Predominant Upwind - Low/Med663.80.9039
Predominant Upwind - Medium601.80.9971
Predominant Upwind - Med/High570.21.0522
Predominant Upwind - High557.11.0770
Predominant Downwind Low871.00.6889
Predominant Downwind Low/Med647.40.9267
Predominant Downwind Medium554.41.0823
Predominant Downwind Med/High491.71.2204
Predominant Downwind High448.11.3389
Predominant Reaching Low766.20.7831
Predominant Reaching Low/Med594.81.0088
Predominant Reaching Medium529.41.1333
Predominant Reaching Med/High486.21.2341
Predominant Reaching High457.51.3115
SA/DSPL Upwind26.16SA/DSPL Downwind45.43
Scoring OptionTODTOT
5-Band Windward/Leeward Low1067.70.5620
5-Band Windward/Leeward Low/Med792.30.7573
5-Band Windward/Leeward Medium683.90.8773
5-Band Windward/Leeward Med/High623.90.9617
5-Band Windward/Leeward High595.21.0080
Windward/Leeward 60-40 Low1065.60.5631
Windward/Leeward 60-40 Low/Med800.00.7500
Windward/Leeward 60-40 Medium699.80.8573
Windward/Leeward 60-40 Med/High647.60.9265
Windward/Leeward 60-40 High625.90.9587
5-Band AP Low788.00.7614
5-Band AP Low/Med630.30.9519
5-Band AP Medium559.01.0733
5-Band AP Med/High517.21.1602
5-Band AP High493.31.2162
5-Band SF Bay Tour - Low918.20.6535
5-Band SF Bay Tour - Low/Med757.70.7918
5-Band SF Bay Tour - Medium661.90.9065
5-Band SF Bay Tour - Med/High609.00.9852
5-Band SF Bay Tour - High582.41.0302
Chicago-Mac Upwind0.9130
Chicago-Mac All Purpose0.9434
Chicago-Mac Downwind0.9684
Bayview-Mac Cove Island0.6991
Bayview-Mac Shore0.7050
Harvest Moon Regatta488.51.2283
Double HandedClub Certificate2025
Sun äitisFIN 9640
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassMEAN MARINE 32MeasurementHINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA9.590Max. Beam3.288Draft1.996Displacement2,892Wetted area18.10IMS L8.597LSM08.408Acc. length9.590Sink (kg/mm) 13.91
VCGD-0.101VCGM-0.092RM Rated (kg·m) 71.5Limit of positive stability(°) N/AStability IndexN/ADefault crew weight170Declared crew weight180
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.380PBW0.100PIPA0.0032
EDL0.866ST10.042ST20.191
ST30.071ST40.113ST50.260
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders2Rotating mastNo
P12.380IG11.730ISP11.735MDT10.086MDL10.150MDT20.086MDL20.131TL0.620MW0.150GO0.180
E4.440J3.410BAS1.530FSD0.032SFJSPL3.455WPLTPS0.000BD0.133MWT74.00MCG4.690
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date12/03/2020
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Double HandedClub Certificate2025
Sun äitisFIN 9640
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.250.951.732.933.7733.29
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment13.190.00NoNo 20.00
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment111.5511.5511.556.1459.25
CRUISER/RACER REQUIREMENTS*
Accommodation length9.6 mTable area0.44 m²Headroom1.67 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity72 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity42 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.