Non Spin/HSFClub Certificate2025
Watatait 2FIN 9937
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 Angles44.2°44.2°41.8°40.4°39.1°38.5°38.2°38.4°39.3°
Beat VMG2.443.394.164.715.045.195.275.315.25
52°3.855.216.226.867.197.357.437.507.50
60°4.125.526.497.077.387.557.647.747.76
75°4.315.746.697.227.557.787.958.148.24
90°4.205.636.637.217.577.858.108.508.75
110°3.594.996.116.937.427.778.108.749.36
120°3.334.685.826.707.277.657.998.679.42
135°2.814.075.206.126.857.347.698.369.09
150°2.323.444.525.456.266.917.368.028.68
Run VMG2.012.983.924.775.566.296.897.678.31
Gybe Angles146.9°146.9°152.1°158.2°177.5°178.4°179.0°179.8°179.8°
APH ToD:579.6CDL: 9.454APH ToT: 1.0351CertNo:
BOAT
ClassFinngulf 37DesignerKarl-Johan StråhlmannBuilderFinngulf YachtsAge date01/2006Series date04/2005Offset fileFG37.OFFData fileFIN9937
HULL
Length Overall11.231 mMaximum Beam3.450 mDraft1.996 mDisplacement6,100 kgDLR6.0600IMS DivisionCruiser/RacerDynamic Allowance0.290%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 3 bladesDiameter0.430m
CREW
Maximum weight540 kg(declared)Minimum weight410 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail39.3839.97Headsail Luffed30.2230.22Headsail FlyingSymmetricAsymmetric
STORM SAIL AREAS (m²)
Trysail12.14Storm Jib10.91Heavy Weather Jib29.44
SAIL LIMITS
Headsails1
✱ One set on the forestay
✱ 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
Watatait 2FIN 9937
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 VMG1475.71062.0866.4764.2713.9693.9683.8677.6685.9
52°935.9690.4579.2524.8500.7490.0484.8479.8479.8
60°874.8652.1554.5509.4488.0476.9471.2465.2464.0
75°834.6627.0538.2498.3477.1462.9452.8442.1436.8
90°857.7639.0543.1499.1475.8458.9444.4423.4411.5
110°1002.4721.7589.0519.6485.1463.1444.3411.7384.6
120°1080.2768.5618.6537.6495.4470.7450.7415.4382.3
135°1279.1884.6692.3587.8525.4490.7468.2430.4395.9
150°1553.51046.3797.2660.2575.3521.2489.4449.2414.6
Run VMG1793.71208.1919.2755.1647.3572.6522.3469.2433.2
Selected Courses
Windward / Leeward1631.81135.1892.8759.7680.6633.3603.0573.4559.6
All purpose1209.6859.7692.4603.9554.7526.2507.6484.7470.1
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward717.80.8359
All purpose579.61.0351
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low776.00.7732
Triple Number Coastal/Long Distance Medium575.41.0427
Triple Number Coastal/Long Distance High503.71.1913
Triple Number Windward/Leeward Low1013.90.5918
Triple Number Windward/Leeward Medium712.80.8417
Triple Number Windward/Leeward High599.51.0009
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance634.70.9454
Triple Number Coastal/Long Distance Low776.00.7732
Triple Number Coastal/Long Distance Medium575.41.0427
Triple Number Coastal/Long Distance High503.71.1913
Triple Number Windward/Leeward Low1013.90.5918
Triple Number Windward/Leeward Medium712.80.8417
Triple Number Windward/Leeward High599.51.0009
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1768.91142.4839.9683.3592.7546.4513.4464.4447.2
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7690
Downwind "popa"0.8245
70% up, 30% down "Ilhabela"0.7848
30% up, 70% down "Ilhabela-inverso"0.8070
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low776.00.7732
Triple Number Coastal/Long Distance Medium575.41.0427
Triple Number Coastal/Long Distance High503.71.1913
Triple Number Windward/Leeward Low1013.90.5918
Triple Number Windward/Leeward Medium712.80.8417
Triple Number Windward/Leeward High599.51.0009
Predominantly Upwind614.10.9771
Predominantly Downwind608.80.9855
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low776.00.7732
Triple Number AP Medium575.51.0425
Triple Number AP High503.71.1913
Triple Number Windward/Leeward Low1062.70.5646
Triple Number Windward/Leeward Medium712.80.8417
Triple Number Windward/Leeward High599.51.0009
Single Number Predominant Upwind640.30.9371
Single Number Predominant Reaching580.71.0333
Single Number Predominant Downwind641.70.9351
Predominant Upwind - Low909.30.6598
Predominant Upwind - Low/Med681.10.8809
Predominant Upwind - Medium590.61.0160
Predominant Upwind - Med/High546.41.0982
Predominant Upwind - High530.01.1321
Predominant Downwind Low997.70.6014
Predominant Downwind Low/Med709.40.8458
Predominant Downwind Medium582.31.0304
Predominant Downwind Med/High505.61.1867
Predominant Downwind High468.71.2803
Predominant Reaching Low838.60.7155
Predominant Reaching Low/Med624.30.9610
Predominant Reaching Medium536.31.1188
Predominant Reaching Med/High486.21.2340
Predominant Reaching High460.91.3019
SA/DSPL Upwind20.73SA/DSPL Downwind20.73
Scoring OptionTODTOT
5-Band Windward/Leeward Low1199.40.5002
5-Band Windward/Leeward Low/Med850.20.7057
5-Band Windward/Leeward Medium697.10.8608
5-Band Windward/Leeward Med/High609.70.9841
5-Band Windward/Leeward High576.11.0414
Windward/Leeward 60-40 Low1182.80.5073
Windward/Leeward 60-40 Low/Med847.50.7080
Windward/Leeward 60-40 Medium703.50.8529
Windward/Leeward 60-40 Med/High625.10.9598
Windward/Leeward 60-40 High596.91.0051
5-Band AP Low874.60.6860
5-Band AP Low/Med665.50.9016
5-Band AP Medium565.61.0607
5-Band AP Med/High510.81.1746
5-Band AP High486.11.2342
5-Band SF Bay Tour - Low1019.50.5885
5-Band SF Bay Tour - Low/Med808.80.7418
5-Band SF Bay Tour - Medium671.40.8937
5-Band SF Bay Tour - Med/High596.61.0057
5-Band SF Bay Tour - High567.61.0570
Chicago-Mac Upwind0.9056
Chicago-Mac All Purpose0.9059
Chicago-Mac Downwind0.8950
Bayview-Mac Cove Island0.6397
Bayview-Mac Shore0.6477
Harvest Moon Regatta501.71.1958
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance634.70.9454
Triple Number Coastal/Long Distance Low776.00.7732
Triple Number Coastal/Long Distance Medium575.41.0427
Triple Number Coastal/Long Distance High503.71.1913
Triple Number Windward/Leeward Low1013.90.5918
Triple Number Windward/Leeward Medium712.80.8417
Triple Number Windward/Leeward High599.51.0009
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1768.91142.4839.9683.3592.7546.4513.4464.4447.2
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance634.70.9454
Triple Number Coastal/Long Distance Low776.00.7732
Triple Number Coastal/Long Distance Medium575.41.0427
Triple Number Coastal/Long Distance High503.71.1913
Triple Number Windward/Leeward Low1013.90.5918
Triple Number Windward/Leeward Medium712.80.8417
Triple Number Windward/Leeward High599.51.0009
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1768.91142.4839.9683.3592.7546.4513.4464.4447.2
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance634.7
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1768.91142.4839.9683.3592.7546.4513.4464.4447.2
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low776.00.7732
Triple Number Coastal/Long Distance Medium575.41.0427
Triple Number Coastal/Long Distance High503.71.1913
Triple Number Windward/Leeward Low1013.90.5918
Triple Number Windward/Leeward Medium712.80.8417
Triple Number Windward/Leeward High599.51.0009
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating634.70.9454
FinRating, kevyt tuuli1181.00.8467
FinRating, kova tuuli489.51.0214
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low776.00.7732
Triple Number Coastal/Long Distance Medium575.41.0427
Triple Number Coastal/Long Distance High503.71.1913
Triple Number Windward/Leeward Low1013.90.5918
Triple Number Windward/Leeward Medium712.80.8417
Triple Number Windward/Leeward High599.51.0009
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9454
Triple Number Coastal/Long Distance Low0.7732
Triple Number Coastal/Long Distance Medium1.0427
Triple Number Coastal/Long Distance High1.1913
Triple Number Windward/Leeward Low0.5918
Triple Number Windward/Leeward Medium0.8417
Triple Number Windward/Leeward High1.0009
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1768.91142.4839.9683.3592.7546.4513.4464.4447.2
For information
General Purpose Handicap (GPH)657.0
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance634.70.9454
Triple Number Coastal/Long Distance Low776.00.7732
Triple Number Coastal/Long Distance Medium575.41.0427
Triple Number Coastal/Long Distance High503.71.1913
Triple Number Windward/Leeward Low1013.90.5918
Triple Number Windward/Leeward Medium712.80.8417
Triple Number Windward/Leeward High599.51.0009
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1768.91142.4839.9683.3592.7546.4513.4464.4447.2
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low776.00.7732
Triple Number Coastal/Long Distance Medium575.41.0427
Triple Number Coastal/Long Distance High503.71.1913
Triple Number Windward/Leeward Low1013.90.5918
Triple Number Windward/Leeward Medium712.80.8417
Triple Number Windward/Leeward High599.51.0009
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance634.70.9454
Triple Number Coastal/Long Distance Low776.00.7732
Triple Number Coastal/Long Distance Medium575.41.0427
Triple Number Coastal/Long Distance High503.71.1913
Triple Number Windward/Leeward Low1013.90.5918
Triple Number Windward/Leeward Medium712.80.8417
Triple Number Windward/Leeward High599.51.0009
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1768.91142.4839.9683.3592.7546.4513.4464.4447.2
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance634.70.9454
Triple Number Coastal/Long Distance Low776.00.7732
Triple Number Coastal/Long Distance Medium575.41.0427
Triple Number Coastal/Long Distance High503.71.1913
Triple Number Windward/Leeward Low1013.90.5918
Triple Number Windward/Leeward Medium712.80.8417
Triple Number Windward/Leeward High599.51.0009
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1768.91142.4839.9683.3592.7546.4513.4464.4447.2
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low776.0
Triple Number Coastal/Long Distance Medium575.4
Triple Number Coastal/Long Distance High503.7
Triple Number Windward/Leeward Low1013.9
Triple Number Windward/Leeward Medium712.8
Triple Number Windward/Leeward High599.5
Predominantly Upwind614.1
Predominantly Downwind608.8
Predominantly Reaching572.7
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance634.70.9454
Triple Number Coastal/Long Distance Low776.00.7732
Triple Number Coastal/Long Distance Medium575.41.0427
Triple Number Coastal/Long Distance High503.71.1913
Triple Number Windward/Leeward Low1013.90.5918
Triple Number Windward/Leeward Medium712.80.8417
Triple Number Windward/Leeward High599.51.0009
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1768.91142.4839.9683.3592.7546.4513.4464.4447.2
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7732
Triple Number Coastal/Long Distance Medium1.0427
Triple Number Coastal/Long Distance High1.1913
Triple Number Windward/Leeward Low0.5918
Triple Number Windward/Leeward Medium0.8417
Triple Number Windward/Leeward High1.0009
Coastal/Long Distance0.9454
Predominantly Upwind0.9771
Predominantly Downwind0.9855
For information
General Purpose Handicap (GPH)657.0
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0351
Distanseseilas Trippeltall svak vind0.7732
Distanseseilas Trippeltall mellomvind1.0427
Distanseseilas Trippeltall sterk vind1.1913
Pølsebane Trippeltall svak vind0.5918
Pølsebane Trippeltall mellomvind0.8417
Pølsebane Trippeltall sterk vind1.0009
Motvind Singeltall0.9771
Medvind Singeltall0.9855
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low776.00.7732
Triple Number Coastal/Long Distance Medium575.41.0427
Triple Number Coastal/Long Distance High503.71.1913
Triple Number Windward/Leeward Low1013.90.5918
Triple Number Windward/Leeward Medium712.80.8417
Triple Number Windward/Leeward High599.51.0009
Coastal/Long Distance634.70.9454
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind614.10.9771
Predominantly Downwind608.80.9855
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore563.71.0644
Cape Doctor Coastal474.51.2646
Triple Number Coastal/Long Distance Low776.00.7732
Triple Number Coastal/Long Distance Medium575.41.0427
Triple Number Coastal/Long Distance High503.71.1913
Triple Number Windward/Leeward Low1013.90.5918
Triple Number Windward/Leeward Medium712.80.8417
Triple Number Windward/Leeward High599.51.0009
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7732
Triple Number Coastal/Long Distance Medium1.0427
Triple Number Coastal/Long Distance High1.1913
Triple Number Windward/Leeward Low0.5918
Triple Number Windward/Leeward Medium0.8417
Triple Number Windward/Leeward High1.0009
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7732
Triple Number Coastal/Long Distance Medium1.0427
Triple Number Coastal/Long Distance High1.1913
Triple Number Windward/Leeward Low0.5918
Triple Number Windward/Leeward Medium0.8417
Triple Number Windward/Leeward High1.0009
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance634.70.9454
Triple Number Coastal/Long Distance Low776.00.7732
Triple Number Coastal/Long Distance Medium575.41.0427
Triple Number Coastal/Long Distance High503.71.1913
Triple Number Windward/Leeward Low1013.90.5918
Triple Number Windward/Leeward Medium712.80.8417
Triple Number Windward/Leeward High599.51.0009
Predominantly Upwind614.10.9771
Predominantly Downwind608.80.9855
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1768.91142.4839.9683.3592.7546.4513.4464.4447.2
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance634.70.9454
Triple Number Coastal/Long Distance Low776.00.7732
Triple Number Coastal/Long Distance Medium575.41.0427
Triple Number Coastal/Long Distance High503.71.1913
Triple Number Windward/Leeward Low1013.90.5918
Triple Number Windward/Leeward Medium712.80.8417
Triple Number Windward/Leeward High599.51.0009
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1768.91142.4839.9683.3592.7546.4513.4464.4447.2
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low776.00.7732
Triple Number AP Medium575.51.0425
Triple Number AP High503.71.1913
Triple Number Windward/Leeward Low1062.70.5646
Triple Number Windward/Leeward Medium712.80.8417
Triple Number Windward/Leeward High599.51.0009
Single Number Predominant Upwind640.30.9371
Single Number Predominant Reaching580.71.0333
Single Number Predominant Downwind641.70.9351
Predominant Upwind - Low909.30.6598
Predominant Upwind - Low/Med681.10.8809
Predominant Upwind - Medium590.61.0160
Predominant Upwind - Med/High546.41.0982
Predominant Upwind - High530.01.1321
Predominant Downwind Low997.70.6014
Predominant Downwind Low/Med709.40.8458
Predominant Downwind Medium582.31.0304
Predominant Downwind Med/High505.61.1867
Predominant Downwind High468.71.2803
Predominant Reaching Low838.60.7155
Predominant Reaching Low/Med624.30.9610
Predominant Reaching Medium536.31.1188
Predominant Reaching Med/High486.21.2340
Predominant Reaching High460.91.3019
SA/DSPL Upwind20.73SA/DSPL Downwind20.73
Scoring OptionTODTOT
5-Band Windward/Leeward Low1199.40.5002
5-Band Windward/Leeward Low/Med850.20.7057
5-Band Windward/Leeward Medium697.10.8608
5-Band Windward/Leeward Med/High609.70.9841
5-Band Windward/Leeward High576.11.0414
Windward/Leeward 60-40 Low1182.80.5073
Windward/Leeward 60-40 Low/Med847.50.7080
Windward/Leeward 60-40 Medium703.50.8529
Windward/Leeward 60-40 Med/High625.10.9598
Windward/Leeward 60-40 High596.91.0051
5-Band AP Low874.60.6860
5-Band AP Low/Med665.50.9016
5-Band AP Medium565.61.0607
5-Band AP Med/High510.81.1746
5-Band AP High486.11.2342
5-Band SF Bay Tour - Low1019.50.5885
5-Band SF Bay Tour - Low/Med808.80.7418
5-Band SF Bay Tour - Medium671.40.8937
5-Band SF Bay Tour - Med/High596.61.0057
5-Band SF Bay Tour - High567.61.0570
Chicago-Mac Upwind0.9056
Chicago-Mac All Purpose0.9059
Chicago-Mac Downwind0.8950
Bayview-Mac Cove Island0.6397
Bayview-Mac Shore0.6477
Harvest Moon Regatta501.71.1958
Non Spin/HSFClub Certificate2025
Watatait 2FIN 9937
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassFinngulf 37MeasurementHINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA11.231Max. Beam3.450Draft1.996Displacement6,100Wetted area26.62IMS L10.158LSM010.021Acc. length11.213Sink (kg/mm) 20.15
VCGD-0.115VCGM-0.035RM Rated (kg·m) 141.9Limit of positive stability(°) N/AStability IndexN/ADefault crew weight690Declared crew weight540
PROPELLER
Propeller TypeFolding 3 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.430PBWPIPA0.0007
EDLST1ST2
ST3ST4ST5
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders2Rotating mastNo
P14.000IG14.765ISP14.850MDT10.215MDL10.225MDT2MDL2TLTaperMWGO
E4.955J4.125BAS1.605FSDFoilSFJSPL4.200WPLTPSBDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date18/06/2024
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Non Spin/HSFClub Certificate2025
Watatait 2FIN 9937
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment00.150.941.702.994.0039.38
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment10.042.204.1814.20NoNo 30.2200.050.000.002.010.004.1214.08NoNo 29.08
CRUISER/RACER REQUIREMENTS*
Accommodation length11.2 mTable area0.55 m²Headroom1.77 mMinimum number of berths5Personal gear stowage0.20 m³Fresh water capacity130 lMinimum number of seats in cockpit5Food stowage0.30 m³Fuel capacity74 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.