Club Certificate2025
AralezLAT447
Latvijas Jūras
burāšanas asociācija
Grecinieku street 11A-5, Riga
Riga LV-1050 Latvia
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 Angles43.9°43.9°42.1°40.1°39.2°38.7°38.5°39.2°40.3°
Beat VMG2.773.834.675.235.515.645.705.755.67
52°4.385.916.997.607.898.018.098.168.16
60°4.716.267.277.828.108.248.328.428.45
75°4.976.527.477.988.308.538.678.868.97
90°4.866.427.427.988.348.648.909.289.51
110°4.416.077.338.058.498.879.179.589.83
120°4.255.887.157.938.428.859.2610.0110.52
135°3.705.236.527.488.098.558.999.9411.22
150°3.034.395.626.687.538.108.539.3910.44
Run VMG2.633.804.875.806.607.287.828.649.44
Gybe Angles143.5°143.5°147.8°151.9°156.3°163.5°169.6°176.8°175.4°
APH ToD:508.5CDL: 11.177APH ToT: 1.1798CertNo:051/25
BOAT
ClassFIRST 44.7DesignerFARRBuilderBENETEAUAge date05/2007Series date10/2004Offset fileFIRST447-SD.offData fileLAT-447
HULL
Length Overall13.352 mMaximum Beam3.968 mDraft2.121 mDisplacement9,562 kgDLR6.1825IMS DivisionCruiser/RacerDynamic Allowance0.010%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.450m
CREW
Maximum weight875 kg(declared)Minimum weight744 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail60.1660.98Headsail Luffed56.1856.18Headsail FlyingSymmetric123.52123.52Asymmetric
STORM SAIL AREAS (m²)
Trysail18.95Storm Jib15.76Heavy Weather Jib42.55
SAIL LIMITS
Headsails6
✱ One set on the forestay
✱ Woven polyester sails
Spinnakers5
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
AralezLAT447
Latvijas Jūras
burāšanas asociācija
Grecinieku street 11A-5, Riga
Riga LV-1050 Latvia
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 VMG1299.4938.8770.3688.0653.8638.7631.3626.5634.5
52°822.4609.4515.4473.8456.4449.2445.2441.2441.0
60°764.3575.4495.1460.3444.3436.9432.6427.5426.0
75°724.1552.2482.0450.9433.7422.2415.0406.4401.4
90°741.0560.9485.3451.0431.5416.6404.4388.1378.6
110°816.9592.8491.1447.4424.0406.1392.6376.0366.2
120°847.5612.0503.6453.9427.5406.7388.7359.8342.3
135°971.7688.3552.2481.3444.8421.1400.4362.0320.9
150°1187.0820.9640.7538.5478.1444.5422.0383.3344.8
Run VMG1370.7947.9739.9620.9545.4494.8460.4416.4381.4
Selected Courses
Windward / Leeward1334.0943.3755.1654.5599.6566.8545.9521.5507.9
All purpose997.7719.9590.0524.8490.5469.9456.0436.9424.1
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward627.50.9562
All purpose508.51.1798
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low655.00.9161
Triple Number Coastal/Long Distance Medium505.11.1879
Triple Number Coastal/Long Distance High452.31.3265
Triple Number Windward/Leeward Low849.30.7065
Triple Number Windward/Leeward Medium622.70.9636
Triple Number Windward/Leeward High542.01.1071
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance554.51.0820
Triple Number Coastal/Long Distance Low655.00.9161
Triple Number Coastal/Long Distance Medium505.11.1879
Triple Number Coastal/Long Distance High452.31.3265
Triple Number Windward/Leeward Low849.30.7065
Triple Number Windward/Leeward Medium622.70.9636
Triple Number Windward/Leeward High542.01.1071
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1425.2943.8710.3590.6523.6487.9460.5417.1403.9
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8489
Downwind "popa"0.9939
70% up, 30% down "Ilhabela"0.8878
30% up, 70% down "Ilhabela-inverso"0.9455
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low655.00.9161
Triple Number Coastal/Long Distance Medium505.11.1879
Triple Number Coastal/Long Distance High452.31.3265
Triple Number Windward/Leeward Low849.30.7065
Triple Number Windward/Leeward Medium622.70.9636
Triple Number Windward/Leeward High542.01.1071
Predominantly Upwind546.91.0970
Predominantly Downwind520.51.1527
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low654.90.9161
Triple Number AP Medium505.11.1878
Triple Number AP High452.31.3265
Triple Number Windward/Leeward Low887.70.6759
Triple Number Windward/Leeward Medium622.70.9636
Triple Number Windward/Leeward High542.01.1071
Single Number Predominant Upwind568.81.0548
Single Number Predominant Reaching505.61.1868
Single Number Predominant Downwind544.21.1026
Predominant Upwind - Low781.00.7682
Predominant Upwind - Low/Med597.51.0041
Predominant Upwind - Medium529.41.1334
Predominant Upwind - Med/High496.81.2078
Predominant Upwind - High483.01.2422
Predominant Downwind Low804.30.7459
Predominant Downwind Low/Med591.71.0141
Predominant Downwind Medium501.71.1961
Predominant Downwind Med/High446.21.3448
Predominant Downwind High414.01.4494
Predominant Reaching Low700.20.8569
Predominant Reaching Low/Med536.81.1178
Predominant Reaching Medium472.71.2693
Predominant Reaching Med/High434.91.3797
Predominant Reaching High412.41.4548
SA/DSPL Upwind25.63SA/DSPL Downwind40.47
Scoring OptionTODTOT
5-Band Windward/Leeward Low994.20.6035
5-Band Windward/Leeward Low/Med724.40.8283
5-Band Windward/Leeward Medium611.70.9809
5-Band Windward/Leeward Med/High549.81.0913
5-Band Windward/Leeward High523.41.1465
Windward/Leeward 60-40 Low992.70.6044
Windward/Leeward 60-40 Low/Med729.30.8227
Windward/Leeward 60-40 Medium622.30.9642
Windward/Leeward 60-40 Med/High566.61.0590
Windward/Leeward 60-40 High544.41.1021
5-Band AP Low725.40.8271
5-Band AP Low/Med571.51.0499
5-Band AP Medium498.21.2045
5-Band AP Med/High458.01.3100
5-Band AP High438.01.3699
5-Band SF Bay Tour - Low853.30.7031
5-Band SF Bay Tour - Low/Med691.20.8680
5-Band SF Bay Tour - Medium590.11.0167
5-Band SF Bay Tour - Med/High536.71.1179
5-Band SF Bay Tour - High512.91.1698
Chicago-Mac Upwind1.0235
Chicago-Mac All Purpose1.0466
Chicago-Mac Downwind1.0614
Bayview-Mac Cove Island0.7624
Bayview-Mac Shore0.7693
Harvest Moon Regatta441.61.3587
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance554.51.0820
Triple Number Coastal/Long Distance Low655.00.9161
Triple Number Coastal/Long Distance Medium505.11.1879
Triple Number Coastal/Long Distance High452.31.3265
Triple Number Windward/Leeward Low849.30.7065
Triple Number Windward/Leeward Medium622.70.9636
Triple Number Windward/Leeward High542.01.1071
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1425.2943.8710.3590.6523.6487.9460.5417.1403.9
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance554.51.0820
Triple Number Coastal/Long Distance Low655.00.9161
Triple Number Coastal/Long Distance Medium505.11.1879
Triple Number Coastal/Long Distance High452.31.3265
Triple Number Windward/Leeward Low849.30.7065
Triple Number Windward/Leeward Medium622.70.9636
Triple Number Windward/Leeward High542.01.1071
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1425.2943.8710.3590.6523.6487.9460.5417.1403.9
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance554.5
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1425.2943.8710.3590.6523.6487.9460.5417.1403.9
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low655.00.9161
Triple Number Coastal/Long Distance Medium505.11.1879
Triple Number Coastal/Long Distance High452.31.3265
Triple Number Windward/Leeward Low849.30.7065
Triple Number Windward/Leeward Medium622.70.9636
Triple Number Windward/Leeward High542.01.1071
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating554.51.0820
FinRating, kevyt tuuli975.61.0250
FinRating, kova tuuli440.41.1354
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low655.00.9161
Triple Number Coastal/Long Distance Medium505.11.1879
Triple Number Coastal/Long Distance High452.31.3265
Triple Number Windward/Leeward Low849.30.7065
Triple Number Windward/Leeward Medium622.70.9636
Triple Number Windward/Leeward High542.01.1071
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance1.0820
Triple Number Coastal/Long Distance Low0.9161
Triple Number Coastal/Long Distance Medium1.1879
Triple Number Coastal/Long Distance High1.3265
Triple Number Windward/Leeward Low0.7065
Triple Number Windward/Leeward Medium0.9636
Triple Number Windward/Leeward High1.1071
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1425.2943.8710.3590.6523.6487.9460.5417.1403.9
For information
General Purpose Handicap (GPH)571.1
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance554.51.0820
Triple Number Coastal/Long Distance Low655.00.9161
Triple Number Coastal/Long Distance Medium505.11.1879
Triple Number Coastal/Long Distance High452.31.3265
Triple Number Windward/Leeward Low849.30.7065
Triple Number Windward/Leeward Medium622.70.9636
Triple Number Windward/Leeward High542.01.1071
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1425.2943.8710.3590.6523.6487.9460.5417.1403.9
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low655.00.9161
Triple Number Coastal/Long Distance Medium505.11.1879
Triple Number Coastal/Long Distance High452.31.3265
Triple Number Windward/Leeward Low849.30.7065
Triple Number Windward/Leeward Medium622.70.9636
Triple Number Windward/Leeward High542.01.1071
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance554.51.0820
Triple Number Coastal/Long Distance Low655.00.9161
Triple Number Coastal/Long Distance Medium505.11.1879
Triple Number Coastal/Long Distance High452.31.3265
Triple Number Windward/Leeward Low849.30.7065
Triple Number Windward/Leeward Medium622.70.9636
Triple Number Windward/Leeward High542.01.1071
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1425.2943.8710.3590.6523.6487.9460.5417.1403.9
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance554.51.0820
Triple Number Coastal/Long Distance Low655.00.9161
Triple Number Coastal/Long Distance Medium505.11.1879
Triple Number Coastal/Long Distance High452.31.3265
Triple Number Windward/Leeward Low849.30.7065
Triple Number Windward/Leeward Medium622.70.9636
Triple Number Windward/Leeward High542.01.1071
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1425.2943.8710.3590.6523.6487.9460.5417.1403.9
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low655.0
Triple Number Coastal/Long Distance Medium505.1
Triple Number Coastal/Long Distance High452.3
Triple Number Windward/Leeward Low849.3
Triple Number Windward/Leeward Medium622.7
Triple Number Windward/Leeward High542.0
Predominantly Upwind546.9
Predominantly Downwind520.5
Predominantly Reaching496.5
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance554.51.0820
Triple Number Coastal/Long Distance Low655.00.9161
Triple Number Coastal/Long Distance Medium505.11.1879
Triple Number Coastal/Long Distance High452.31.3265
Triple Number Windward/Leeward Low849.30.7065
Triple Number Windward/Leeward Medium622.70.9636
Triple Number Windward/Leeward High542.01.1071
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1425.2943.8710.3590.6523.6487.9460.5417.1403.9
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9161
Triple Number Coastal/Long Distance Medium1.1879
Triple Number Coastal/Long Distance High1.3265
Triple Number Windward/Leeward Low0.7065
Triple Number Windward/Leeward Medium0.9636
Triple Number Windward/Leeward High1.1071
Coastal/Long Distance1.0820
Predominantly Upwind1.0970
Predominantly Downwind1.1527
For information
General Purpose Handicap (GPH)571.1
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.1798
Distanseseilas Trippeltall svak vind0.9161
Distanseseilas Trippeltall mellomvind1.1879
Distanseseilas Trippeltall sterk vind1.3265
Pølsebane Trippeltall svak vind0.7065
Pølsebane Trippeltall mellomvind0.9636
Pølsebane Trippeltall sterk vind1.1071
Motvind Singeltall1.0970
Medvind Singeltall1.1527
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low655.00.9161
Triple Number Coastal/Long Distance Medium505.11.1879
Triple Number Coastal/Long Distance High452.31.3265
Triple Number Windward/Leeward Low849.30.7065
Triple Number Windward/Leeward Medium622.70.9636
Triple Number Windward/Leeward High542.01.1071
Coastal/Long Distance554.51.0820
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind546.91.0970
Predominantly Downwind520.51.1527
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore512.01.1719
Cape Doctor Coastal427.91.4021
Triple Number Coastal/Long Distance Low655.00.9161
Triple Number Coastal/Long Distance Medium505.11.1879
Triple Number Coastal/Long Distance High452.31.3265
Triple Number Windward/Leeward Low849.30.7065
Triple Number Windward/Leeward Medium622.70.9636
Triple Number Windward/Leeward High542.01.1071
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9161
Triple Number Coastal/Long Distance Medium1.1879
Triple Number Coastal/Long Distance High1.3265
Triple Number Windward/Leeward Low0.7065
Triple Number Windward/Leeward Medium0.9636
Triple Number Windward/Leeward High1.1071
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9161
Triple Number Coastal/Long Distance Medium1.1879
Triple Number Coastal/Long Distance High1.3265
Triple Number Windward/Leeward Low0.7065
Triple Number Windward/Leeward Medium0.9636
Triple Number Windward/Leeward High1.1071
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance554.51.0820
Triple Number Coastal/Long Distance Low655.00.9161
Triple Number Coastal/Long Distance Medium505.11.1879
Triple Number Coastal/Long Distance High452.31.3265
Triple Number Windward/Leeward Low849.30.7065
Triple Number Windward/Leeward Medium622.70.9636
Triple Number Windward/Leeward High542.01.1071
Predominantly Upwind546.91.0970
Predominantly Downwind520.51.1527
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1425.2943.8710.3590.6523.6487.9460.5417.1403.9
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance554.51.0820
Triple Number Coastal/Long Distance Low655.00.9161
Triple Number Coastal/Long Distance Medium505.11.1879
Triple Number Coastal/Long Distance High452.31.3265
Triple Number Windward/Leeward Low849.30.7065
Triple Number Windward/Leeward Medium622.70.9636
Triple Number Windward/Leeward High542.01.1071
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1425.2943.8710.3590.6523.6487.9460.5417.1403.9
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low654.90.9161
Triple Number AP Medium505.11.1878
Triple Number AP High452.31.3265
Triple Number Windward/Leeward Low887.70.6759
Triple Number Windward/Leeward Medium622.70.9636
Triple Number Windward/Leeward High542.01.1071
Single Number Predominant Upwind568.81.0548
Single Number Predominant Reaching505.61.1868
Single Number Predominant Downwind544.21.1026
Predominant Upwind - Low781.00.7682
Predominant Upwind - Low/Med597.51.0041
Predominant Upwind - Medium529.41.1334
Predominant Upwind - Med/High496.81.2078
Predominant Upwind - High483.01.2422
Predominant Downwind Low804.30.7459
Predominant Downwind Low/Med591.71.0141
Predominant Downwind Medium501.71.1961
Predominant Downwind Med/High446.21.3448
Predominant Downwind High414.01.4494
Predominant Reaching Low700.20.8569
Predominant Reaching Low/Med536.81.1178
Predominant Reaching Medium472.71.2693
Predominant Reaching Med/High434.91.3797
Predominant Reaching High412.41.4548
SA/DSPL Upwind25.63SA/DSPL Downwind40.47
Scoring OptionTODTOT
5-Band Windward/Leeward Low994.20.6035
5-Band Windward/Leeward Low/Med724.40.8283
5-Band Windward/Leeward Medium611.70.9809
5-Band Windward/Leeward Med/High549.81.0913
5-Band Windward/Leeward High523.41.1465
Windward/Leeward 60-40 Low992.70.6044
Windward/Leeward 60-40 Low/Med729.30.8227
Windward/Leeward 60-40 Medium622.30.9642
Windward/Leeward 60-40 Med/High566.61.0590
Windward/Leeward 60-40 High544.41.1021
5-Band AP Low725.40.8271
5-Band AP Low/Med571.51.0499
5-Band AP Medium498.21.2045
5-Band AP Med/High458.01.3100
5-Band AP High438.01.3699
5-Band SF Bay Tour - Low853.30.7031
5-Band SF Bay Tour - Low/Med691.20.8680
5-Band SF Bay Tour - Medium590.11.0167
5-Band SF Bay Tour - Med/High536.71.1179
5-Band SF Bay Tour - High512.91.1698
Chicago-Mac Upwind1.0235
Chicago-Mac All Purpose1.0466
Chicago-Mac Downwind1.0614
Bayview-Mac Cove Island0.7624
Bayview-Mac Shore0.7693
Harvest Moon Regatta441.61.3587
Club Certificate2025
AralezLAT447
Latvijas Jūras
burāšanas asociācija
Grecinieku street 11A-5, Riga
Riga LV-1050 Latvia
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassFIRST 44.7Measurement28/06/2007HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA13.352Max. Beam3.968Draft2.121Displacement9,562Wetted area36.44IMS L11.921LSM011.563Acc. length12.896Sink (kg/mm) 27.56
VCGD-0.078VCGM-0.041RM Rated (kg·m) 270.2Limit of positive stability(°) N/AStability IndexN/ADefault crew weight847Declared crew weight875
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.450PBWPIPA0.0038
EDL2.630ST10.050ST20.180
ST30.180ST40.112ST50.275
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders3Rotating mastNo
P17.270IG17.652ISP17.652MDT10.140MDL10.254MDT20.131MDL20.186TL1.410MW0.233GO0.260
E6.270J4.820BAS1.842FSD0.035SFJSPL4.916WPLTPSBD0.193MWT275.50MCG6.184
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date22/04/2004
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
AralezLAT447
Latvijas Jūras
burāšanas asociācija
Grecinieku street 11A-5, Riga
Riga LV-1050 Latvia
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentORC0.141.142.063.704.9560.16* Copied from legacy *
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentORC6.5716.80NoNo 56.18* Copied from legacy *
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment200817.2217.2217.228.638.52123.52
CRUISER/RACER REQUIREMENTS*
Accommodation length12.9 mTable area0.66 m²Headroom1.85 mMinimum number of berths6Personal gear stowage0.24 m³Fresh water capacity207 lMinimum number of seats in cockpit6Food stowage0.36 m³Fuel capacity108 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.