Club Certificate2025
SagaNOR 13541
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 Angles43.2°43.2°41.0°39.7°39.2°39.0°38.9°39.4°40.8°
Beat VMG2.273.143.824.314.574.674.734.734.59
52°3.534.775.666.256.576.706.766.816.75
60°3.755.015.896.456.766.916.987.057.02
75°3.885.186.076.626.947.157.297.457.49
90°3.745.116.136.747.027.257.487.818.00
110°3.775.196.266.887.287.607.848.178.26
120°3.605.006.106.807.247.627.988.578.98
135°3.164.465.576.436.987.397.808.679.92
150°2.603.794.885.816.547.027.418.209.21
Run VMG2.253.284.235.055.776.366.827.558.28
Gybe Angles146.5°146.5°150.3°153.4°159.2°165.5°172.3°176.8°173.6°
APH ToD:602.9CDL: 8.059APH ToT: 0.9952CertNo:667189
BOAT
ClassFirst 31.7 LRDesignerGroupeFinotBuilderBeneteauAge date01/1998Series date01/1998Offset fileFIRST317.offData file667189
HULL
Length Overall9.610 mMaximum Beam3.212 mDraft1.934 mDisplacement3,766 kgDLR5.4448IMS DivisionCruiser/RacerDynamic Allowance0.310%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.380m
CREW
Maximum weight350 kg(declared)Minimum weight220 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail25.5826.20Headsail Luffed22.2122.21Headsail FlyingSymmetric61.1361.13Asymmetric
STORM SAIL AREAS (m²)
Trysail7.38Storm Jib6.96Heavy Weather Jib18.77
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
SagaNOR 13541
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 VMG1587.41148.1941.9836.0787.1770.1761.7761.6783.8
52°1019.2755.4636.4575.8548.3537.7532.2528.5533.2
60°960.8718.0611.0557.9532.6521.0515.6510.4512.9
75°928.5694.9593.0544.2518.6503.3493.6483.3480.4
90°963.3704.8587.4534.4512.8496.7481.3461.0450.1
110°955.0693.9575.2523.0494.7473.6459.0440.9435.7
120°1000.6720.4590.4529.5497.5472.6451.4420.2401.0
135°1139.5806.6645.9559.8515.9487.0461.5415.3362.9
150°1385.8951.1737.7619.6550.6512.8486.0438.9390.7
Run VMG1600.41098.3851.7713.0624.1566.3528.1477.1434.8
Selected Courses
Windward / Leeward1592.11123.2896.8774.5705.6668.2644.9619.3609.3
All purpose1206.3866.0705.4622.7579.2555.1538.6517.6506.1
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward741.50.8092
All purpose602.90.9952
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low785.60.7637
Triple Number Coastal/Long Distance Medium598.11.0031
Triple Number Coastal/Long Distance High534.91.1218
Triple Number Windward/Leeward Low1009.90.5941
Triple Number Windward/Leeward Medium735.10.8162
Triple Number Windward/Leeward High641.20.9358
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance655.90.9148
Triple Number Coastal/Long Distance Low785.60.7637
Triple Number Coastal/Long Distance Medium598.11.0031
Triple Number Coastal/Long Distance High534.91.1218
Triple Number Windward/Leeward Low1009.90.5941
Triple Number Windward/Leeward Medium735.10.8162
Triple Number Windward/Leeward High641.20.9358
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1689.91120.7843.7699.5618.1576.2543.6492.6479.4
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6993
Downwind "popa"0.8645
70% up, 30% down "Ilhabela"0.7418
30% up, 70% down "Ilhabela-inverso"0.8072
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low785.60.7637
Triple Number Coastal/Long Distance Medium598.11.0031
Triple Number Coastal/Long Distance High534.91.1218
Triple Number Windward/Leeward Low1009.90.5941
Triple Number Windward/Leeward Medium735.10.8162
Triple Number Windward/Leeward High641.20.9358
Predominantly Upwind655.70.9150
Predominantly Downwind609.80.9839
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low785.70.7637
Triple Number AP Medium598.21.0030
Triple Number AP High534.81.1218
Triple Number Windward/Leeward Low1056.10.5681
Triple Number Windward/Leeward Medium735.10.8162
Triple Number Windward/Leeward High641.20.9358
Single Number Predominant Upwind683.80.8775
Single Number Predominant Reaching602.00.9966
Single Number Predominant Downwind638.70.9394
Predominant Upwind - Low952.60.6298
Predominant Upwind - Low/Med721.40.8317
Predominant Upwind - Medium632.90.9480
Predominant Upwind - Med/High592.51.0127
Predominant Upwind - High578.41.0374
Predominant Downwind Low955.40.6280
Predominant Downwind Low/Med695.90.8622
Predominant Downwind Medium586.31.0233
Predominant Downwind Med/High520.61.1525
Predominant Downwind High482.91.2424
Predominant Reaching Low851.10.7050
Predominant Reaching Low/Med641.00.9360
Predominant Reaching Medium559.21.0730
Predominant Reaching Med/High513.21.1692
Predominant Reaching High486.71.2328
SA/DSPL Upwind19.66SA/DSPL Downwind35.67
Scoring OptionTODTOT
5-Band Windward/Leeward Low1184.20.5067
5-Band Windward/Leeward Low/Med858.80.6987
5-Band Windward/Leeward Medium721.70.8314
5-Band Windward/Leeward Med/High649.60.9236
5-Band Windward/Leeward High622.00.9646
Windward/Leeward 60-40 Low1188.70.5048
Windward/Leeward 60-40 Low/Med869.40.6901
Windward/Leeward 60-40 Medium738.00.8130
Windward/Leeward 60-40 Med/High672.80.8919
Windward/Leeward 60-40 High650.70.9221
5-Band AP Low872.40.6878
5-Band AP Low/Med681.20.8807
5-Band AP Medium589.51.0178
5-Band AP Med/High541.31.1085
5-Band AP High519.21.1555
5-Band SF Bay Tour - Low1018.60.5890
5-Band SF Bay Tour - Low/Med822.00.7299
5-Band SF Bay Tour - Medium698.30.8592
5-Band SF Bay Tour - Med/High635.50.9442
5-Band SF Bay Tour - High610.50.9828
Chicago-Mac Upwind0.8505
Chicago-Mac All Purpose0.8797
Chicago-Mac Downwind0.9038
Bayview-Mac Cove Island0.6363
Bayview-Mac Shore0.6410
Harvest Moon Regatta519.71.1544
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance655.90.9148
Triple Number Coastal/Long Distance Low785.60.7637
Triple Number Coastal/Long Distance Medium598.11.0031
Triple Number Coastal/Long Distance High534.91.1218
Triple Number Windward/Leeward Low1009.90.5941
Triple Number Windward/Leeward Medium735.10.8162
Triple Number Windward/Leeward High641.20.9358
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1689.91120.7843.7699.5618.1576.2543.6492.6479.4
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance655.90.9148
Triple Number Coastal/Long Distance Low785.60.7637
Triple Number Coastal/Long Distance Medium598.11.0031
Triple Number Coastal/Long Distance High534.91.1218
Triple Number Windward/Leeward Low1009.90.5941
Triple Number Windward/Leeward Medium735.10.8162
Triple Number Windward/Leeward High641.20.9358
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1689.91120.7843.7699.5618.1576.2543.6492.6479.4
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance655.9
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1689.91120.7843.7699.5618.1576.2543.6492.6479.4
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low785.60.7637
Triple Number Coastal/Long Distance Medium598.11.0031
Triple Number Coastal/Long Distance High534.91.1218
Triple Number Windward/Leeward Low1009.90.5941
Triple Number Windward/Leeward Medium735.10.8162
Triple Number Windward/Leeward High641.20.9358
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating655.90.9148
FinRating, kevyt tuuli1164.90.8584
FinRating, kova tuuli522.30.9574
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low785.60.7637
Triple Number Coastal/Long Distance Medium598.11.0031
Triple Number Coastal/Long Distance High534.91.1218
Triple Number Windward/Leeward Low1009.90.5941
Triple Number Windward/Leeward Medium735.10.8162
Triple Number Windward/Leeward High641.20.9358
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9148
Triple Number Coastal/Long Distance Low0.7637
Triple Number Coastal/Long Distance Medium1.0031
Triple Number Coastal/Long Distance High1.1218
Triple Number Windward/Leeward Low0.5941
Triple Number Windward/Leeward Medium0.8162
Triple Number Windward/Leeward High0.9358
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1689.91120.7843.7699.5618.1576.2543.6492.6479.4
For information
General Purpose Handicap (GPH)678.9
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance655.90.9148
Triple Number Coastal/Long Distance Low785.60.7637
Triple Number Coastal/Long Distance Medium598.11.0031
Triple Number Coastal/Long Distance High534.91.1218
Triple Number Windward/Leeward Low1009.90.5941
Triple Number Windward/Leeward Medium735.10.8162
Triple Number Windward/Leeward High641.20.9358
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1689.91120.7843.7699.5618.1576.2543.6492.6479.4
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low785.60.7637
Triple Number Coastal/Long Distance Medium598.11.0031
Triple Number Coastal/Long Distance High534.91.1218
Triple Number Windward/Leeward Low1009.90.5941
Triple Number Windward/Leeward Medium735.10.8162
Triple Number Windward/Leeward High641.20.9358
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance655.90.9148
Triple Number Coastal/Long Distance Low785.60.7637
Triple Number Coastal/Long Distance Medium598.11.0031
Triple Number Coastal/Long Distance High534.91.1218
Triple Number Windward/Leeward Low1009.90.5941
Triple Number Windward/Leeward Medium735.10.8162
Triple Number Windward/Leeward High641.20.9358
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1689.91120.7843.7699.5618.1576.2543.6492.6479.4
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance655.90.9148
Triple Number Coastal/Long Distance Low785.60.7637
Triple Number Coastal/Long Distance Medium598.11.0031
Triple Number Coastal/Long Distance High534.91.1218
Triple Number Windward/Leeward Low1009.90.5941
Triple Number Windward/Leeward Medium735.10.8162
Triple Number Windward/Leeward High641.20.9358
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1689.91120.7843.7699.5618.1576.2543.6492.6479.4
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low785.6
Triple Number Coastal/Long Distance Medium598.1
Triple Number Coastal/Long Distance High534.9
Triple Number Windward/Leeward Low1009.9
Triple Number Windward/Leeward Medium735.1
Triple Number Windward/Leeward High641.2
Predominantly Upwind655.7
Predominantly Downwind609.8
Predominantly Reaching586.2
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance655.90.9148
Triple Number Coastal/Long Distance Low785.60.7637
Triple Number Coastal/Long Distance Medium598.11.0031
Triple Number Coastal/Long Distance High534.91.1218
Triple Number Windward/Leeward Low1009.90.5941
Triple Number Windward/Leeward Medium735.10.8162
Triple Number Windward/Leeward High641.20.9358
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1689.91120.7843.7699.5618.1576.2543.6492.6479.4
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7637
Triple Number Coastal/Long Distance Medium1.0031
Triple Number Coastal/Long Distance High1.1218
Triple Number Windward/Leeward Low0.5941
Triple Number Windward/Leeward Medium0.8162
Triple Number Windward/Leeward High0.9358
Coastal/Long Distance0.9148
Predominantly Upwind0.9150
Predominantly Downwind0.9839
For information
General Purpose Handicap (GPH)678.9
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.9952
Distanseseilas Trippeltall svak vind0.7637
Distanseseilas Trippeltall mellomvind1.0031
Distanseseilas Trippeltall sterk vind1.1218
Pølsebane Trippeltall svak vind0.5941
Pølsebane Trippeltall mellomvind0.8162
Pølsebane Trippeltall sterk vind0.9358
Motvind Singeltall0.9150
Medvind Singeltall0.9839
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low785.60.7637
Triple Number Coastal/Long Distance Medium598.11.0031
Triple Number Coastal/Long Distance High534.91.1218
Triple Number Windward/Leeward Low1009.90.5941
Triple Number Windward/Leeward Medium735.10.8162
Triple Number Windward/Leeward High641.20.9358
Coastal/Long Distance655.90.9148
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind655.70.9150
Predominantly Downwind609.80.9839
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore612.30.9799
Cape Doctor Coastal509.51.1775
Triple Number Coastal/Long Distance Low785.60.7637
Triple Number Coastal/Long Distance Medium598.11.0031
Triple Number Coastal/Long Distance High534.91.1218
Triple Number Windward/Leeward Low1009.90.5941
Triple Number Windward/Leeward Medium735.10.8162
Triple Number Windward/Leeward High641.20.9358
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7637
Triple Number Coastal/Long Distance Medium1.0031
Triple Number Coastal/Long Distance High1.1218
Triple Number Windward/Leeward Low0.5941
Triple Number Windward/Leeward Medium0.8162
Triple Number Windward/Leeward High0.9358
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7637
Triple Number Coastal/Long Distance Medium1.0031
Triple Number Coastal/Long Distance High1.1218
Triple Number Windward/Leeward Low0.5941
Triple Number Windward/Leeward Medium0.8162
Triple Number Windward/Leeward High0.9358
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance655.90.9148
Triple Number Coastal/Long Distance Low785.60.7637
Triple Number Coastal/Long Distance Medium598.11.0031
Triple Number Coastal/Long Distance High534.91.1218
Triple Number Windward/Leeward Low1009.90.5941
Triple Number Windward/Leeward Medium735.10.8162
Triple Number Windward/Leeward High641.20.9358
Predominantly Upwind655.70.9150
Predominantly Downwind609.80.9839
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1689.91120.7843.7699.5618.1576.2543.6492.6479.4
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance655.90.9148
Triple Number Coastal/Long Distance Low785.60.7637
Triple Number Coastal/Long Distance Medium598.11.0031
Triple Number Coastal/Long Distance High534.91.1218
Triple Number Windward/Leeward Low1009.90.5941
Triple Number Windward/Leeward Medium735.10.8162
Triple Number Windward/Leeward High641.20.9358
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1689.91120.7843.7699.5618.1576.2543.6492.6479.4
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low785.70.7637
Triple Number AP Medium598.21.0030
Triple Number AP High534.81.1218
Triple Number Windward/Leeward Low1056.10.5681
Triple Number Windward/Leeward Medium735.10.8162
Triple Number Windward/Leeward High641.20.9358
Single Number Predominant Upwind683.80.8775
Single Number Predominant Reaching602.00.9966
Single Number Predominant Downwind638.70.9394
Predominant Upwind - Low952.60.6298
Predominant Upwind - Low/Med721.40.8317
Predominant Upwind - Medium632.90.9480
Predominant Upwind - Med/High592.51.0127
Predominant Upwind - High578.41.0374
Predominant Downwind Low955.40.6280
Predominant Downwind Low/Med695.90.8622
Predominant Downwind Medium586.31.0233
Predominant Downwind Med/High520.61.1525
Predominant Downwind High482.91.2424
Predominant Reaching Low851.10.7050
Predominant Reaching Low/Med641.00.9360
Predominant Reaching Medium559.21.0730
Predominant Reaching Med/High513.21.1692
Predominant Reaching High486.71.2328
SA/DSPL Upwind19.66SA/DSPL Downwind35.67
Scoring OptionTODTOT
5-Band Windward/Leeward Low1184.20.5067
5-Band Windward/Leeward Low/Med858.80.6987
5-Band Windward/Leeward Medium721.70.8314
5-Band Windward/Leeward Med/High649.60.9236
5-Band Windward/Leeward High622.00.9646
Windward/Leeward 60-40 Low1188.70.5048
Windward/Leeward 60-40 Low/Med869.40.6901
Windward/Leeward 60-40 Medium738.00.8130
Windward/Leeward 60-40 Med/High672.80.8919
Windward/Leeward 60-40 High650.70.9221
5-Band AP Low872.40.6878
5-Band AP Low/Med681.20.8807
5-Band AP Medium589.51.0178
5-Band AP Med/High541.31.1085
5-Band AP High519.21.1555
5-Band SF Bay Tour - Low1018.60.5890
5-Band SF Bay Tour - Low/Med822.00.7299
5-Band SF Bay Tour - Medium698.30.8592
5-Band SF Bay Tour - Med/High635.50.9442
5-Band SF Bay Tour - High610.50.9828
Chicago-Mac Upwind0.8505
Chicago-Mac All Purpose0.8797
Chicago-Mac Downwind0.9038
Bayview-Mac Cove Island0.6363
Bayview-Mac Shore0.6410
Harvest Moon Regatta519.71.1544
Club Certificate2025
SagaNOR 13541
Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassFirst 31.7 LRMeasurementHINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA9.610Max. Beam3.212Draft1.934Displacement3,766Wetted area20.39IMS L8.920LSM08.843Acc. length9.610Sink (kg/mm) 15.64
VCGD0.220VCGM0.175RM Rated (kg·m) 73.0Limit of positive stability(°) N/AStability IndexN/ADefault crew weight578Declared crew weight350
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.380PBWPIPA0.0033
EDL2.380ST10.050ST20.170
ST30.170ST40.100ST50.310
RIG
Forestay tensionAftInner stayNone FittedMast materialSingle headsail furlerNoMainsail furlerArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders2Rotating mastNo
P10.800IG11.790ISP11.860MDT10.100MDL10.160MDT20.100MDL20.160TL0.000MW0.000GO0.000
E3.900J3.500BAS1.710FSDFoilSFJ0.000SPL3.660WPLTPS0.000BD0.000MWT78.00MCG3.980
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered0.220Flotation Date01/01/2015
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
SagaNOR 13541
Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment1-2020052912140.160.841.542.593.3225.5829/05/2020
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment330-2018053013380.060.561.071.912.693.5012.00YesNo 22.2130/05/2018Aktiv
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment330-20210526163511.7311.7311.736.276.1961.1326/05/2021330-20200602154111.7011.7011.706.286.2061.0702/06/2020330-20210526163711.6511.6511.656.306.2561.0726/05/2021
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.