Club Certificate2025
FATIMAESP-6600_C
RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
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 Angles42.3°42.3°40.4°39.4°38.4°37.8°37.3°36.7°36.7°
Beat VMG2.533.434.064.424.614.744.824.924.97
52°3.915.155.926.306.496.596.666.756.81
60°4.145.396.106.446.636.746.816.927.00
75°4.305.546.226.566.766.917.027.187.31
90°4.185.456.206.586.837.017.167.417.63
110°4.035.406.306.747.017.227.367.627.85
120°3.845.236.226.717.037.307.567.948.26
135°3.314.665.786.506.887.207.518.199.07
150°2.783.985.045.956.576.927.237.878.69
Run VMG2.403.454.375.175.876.376.757.337.93
Gybe Angles145.7°145.7°150.5°152.5°160.9°169.6°177.7°178.4°177.1°
APH ToD:600.5CDL: 7.670APH ToT: 0.9992CertNo:660001
BOAT
Class6M JIDesignerP.NORLINBuilderSWEDEN YACHTS A.B.Age date01/1975Series date01/1975Offset fileFATIMA2.OFFData fileE6600_C
HULL
Length Overall10.040 mMaximum Beam1.880 mDraft1.707 mDisplacement4,543 kgDLR10.1168IMS DivisionCruiser/RacerDynamic Allowance0.210%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeSolid 2 bladesDiameter0.300m
CREW
Maximum weight300 kg(declared)Minimum weight170 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail33.5834.30Headsail Luffed31.9431.94Headsail FlyingSymmetric83.2383.23Asymmetric
STORM SAIL AREAS (m²)
Trysail9.67Storm Jib4.92Heavy Weather Jib13.26
SAIL LIMITS
Headsails5
✱ Woven polyester sails
Spinnakers4
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
FATIMAESP-6600_C
RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
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 VMG1420.21050.6887.0814.6780.1760.1746.7731.1724.6
52°920.4698.7607.7571.4555.0546.3540.4533.0528.4
60°868.5668.2589.9558.6543.2534.3528.4520.3514.6
75°837.6650.0578.9548.9532.3521.1513.0501.5492.6
90°860.5660.4580.9546.7527.4513.6502.8485.7471.9
110°892.4666.8571.1534.5513.3498.6488.8472.4458.7
120°938.4688.5578.8536.9512.3492.9475.9453.6436.0
135°1089.1772.2622.9553.9523.0500.0479.5439.5397.1
150°1293.8904.8713.6605.1547.9520.0497.8457.6414.2
Run VMG1496.91044.8823.7696.8613.4564.8533.7491.0453.9
Selected Courses
Windward / Leeward1456.71047.7855.3755.7696.8662.4640.2611.1589.2
All purpose1104.4811.6679.6617.1583.0562.7548.2526.3507.7
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward725.20.8274
All purpose600.50.9992
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low745.60.8047
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High543.61.1038
Triple Number Windward/Leeward Low951.50.6306
Triple Number Windward/Leeward Medium721.10.8321
Triple Number Windward/Leeward High634.90.9451
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance649.90.9232
Triple Number Coastal/Long Distance Low745.60.8047
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High543.61.1038
Triple Number Windward/Leeward Low951.50.6306
Triple Number Windward/Leeward Medium721.10.8321
Triple Number Windward/Leeward High634.90.9451
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1545.31047.4807.4687.8619.3582.6553.7508.6491.3
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7279
Downwind "popa"0.8808
70% up, 30% down "Ilhabela"0.7679
30% up, 70% down "Ilhabela-inverso"0.8286
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low745.60.8047
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High543.61.1038
Triple Number Windward/Leeward Low951.50.6306
Triple Number Windward/Leeward Medium721.10.8321
Triple Number Windward/Leeward High634.90.9451
Predominantly Upwind646.90.9275
Predominantly Downwind604.80.9920
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low745.60.8047
Triple Number AP Medium597.41.0044
Triple Number AP High543.61.1038
Triple Number Windward/Leeward Low992.30.6047
Triple Number Windward/Leeward Medium721.10.8321
Triple Number Windward/Leeward High634.90.9451
Single Number Predominant Upwind669.00.8968
Single Number Predominant Reaching597.81.0037
Single Number Predominant Downwind630.60.9515
Predominant Upwind - Low882.70.6798
Predominant Upwind - Low/Med697.50.8603
Predominant Upwind - Medium630.70.9513
Predominant Upwind - Med/High595.21.0080
Predominant Upwind - High576.51.0408
Predominant Downwind Low901.80.6653
Predominant Downwind Low/Med677.30.8859
Predominant Downwind Medium585.71.0245
Predominant Downwind Med/High530.51.1310
Predominant Downwind High497.01.2073
Predominant Reaching Low798.40.7515
Predominant Reaching Low/Med627.30.9564
Predominant Reaching Medium563.91.0640
Predominant Reaching Med/High526.31.1401
Predominant Reaching High501.71.1958
SA/DSPL Upwind23.77SA/DSPL Downwind42.37
Scoring OptionTODTOT
5-Band Windward/Leeward Low1102.30.5443
5-Band Windward/Leeward Low/Med825.10.7272
5-Band Windward/Leeward Medium709.30.8459
5-Band Windward/Leeward Med/High643.80.9320
5-Band Windward/Leeward High612.30.9798
Windward/Leeward 60-40 Low1102.30.5443
Windward/Leeward 60-40 Low/Med834.10.7194
Windward/Leeward 60-40 Medium725.20.8274
Windward/Leeward 60-40 Med/High664.90.9024
Windward/Leeward 60-40 High636.40.9428
5-Band AP Low819.60.7320
5-Band AP Low/Med662.70.9054
5-Band AP Medium590.41.0163
5-Band AP Med/High549.81.0912
5-Band AP High526.91.1388
5-Band SF Bay Tour - Low953.70.6291
5-Band SF Bay Tour - Low/Med790.70.7589
5-Band SF Bay Tour - Medium688.80.8711
5-Band SF Bay Tour - Med/High632.20.9490
5-Band SF Bay Tour - High603.00.9950
Chicago-Mac Upwind0.8728
Chicago-Mac All Purpose0.8987
Chicago-Mac Downwind0.9203
Bayview-Mac Cove Island0.6744
Bayview-Mac Shore0.6795
Harvest Moon Regatta531.21.1296
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance649.90.9232
Triple Number Coastal/Long Distance Low745.60.8047
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High543.61.1038
Triple Number Windward/Leeward Low951.50.6306
Triple Number Windward/Leeward Medium721.10.8321
Triple Number Windward/Leeward High634.90.9451
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1545.31047.4807.4687.8619.3582.6553.7508.6491.3
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance649.90.9232
Triple Number Coastal/Long Distance Low745.60.8047
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High543.61.1038
Triple Number Windward/Leeward Low951.50.6306
Triple Number Windward/Leeward Medium721.10.8321
Triple Number Windward/Leeward High634.90.9451
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1545.31047.4807.4687.8619.3582.6553.7508.6491.3
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance649.9
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1545.31047.4807.4687.8619.3582.6553.7508.6491.3
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low745.60.8047
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High543.61.1038
Triple Number Windward/Leeward Low951.50.6306
Triple Number Windward/Leeward Medium721.10.8321
Triple Number Windward/Leeward High634.90.9451
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating649.90.9232
FinRating, kevyt tuuli1082.90.9235
FinRating, kova tuuli530.30.9429
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low745.60.8047
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High543.61.1038
Triple Number Windward/Leeward Low951.50.6306
Triple Number Windward/Leeward Medium721.10.8321
Triple Number Windward/Leeward High634.90.9451
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9232
Triple Number Coastal/Long Distance Low0.8047
Triple Number Coastal/Long Distance Medium1.0045
Triple Number Coastal/Long Distance High1.1038
Triple Number Windward/Leeward Low0.6306
Triple Number Windward/Leeward Medium0.8321
Triple Number Windward/Leeward High0.9451
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1545.31047.4807.4687.8619.3582.6553.7508.6491.3
For information
General Purpose Handicap (GPH)668.1
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance649.90.9232
Triple Number Coastal/Long Distance Low745.60.8047
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High543.61.1038
Triple Number Windward/Leeward Low951.50.6306
Triple Number Windward/Leeward Medium721.10.8321
Triple Number Windward/Leeward High634.90.9451
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1545.31047.4807.4687.8619.3582.6553.7508.6491.3
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low745.60.8047
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High543.61.1038
Triple Number Windward/Leeward Low951.50.6306
Triple Number Windward/Leeward Medium721.10.8321
Triple Number Windward/Leeward High634.90.9451
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance649.90.9232
Triple Number Coastal/Long Distance Low745.60.8047
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High543.61.1038
Triple Number Windward/Leeward Low951.50.6306
Triple Number Windward/Leeward Medium721.10.8321
Triple Number Windward/Leeward High634.90.9451
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1545.31047.4807.4687.8619.3582.6553.7508.6491.3
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance649.90.9232
Triple Number Coastal/Long Distance Low745.60.8047
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High543.61.1038
Triple Number Windward/Leeward Low951.50.6306
Triple Number Windward/Leeward Medium721.10.8321
Triple Number Windward/Leeward High634.90.9451
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1545.31047.4807.4687.8619.3582.6553.7508.6491.3
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low745.6
Triple Number Coastal/Long Distance Medium597.3
Triple Number Coastal/Long Distance High543.6
Triple Number Windward/Leeward Low951.5
Triple Number Windward/Leeward Medium721.1
Triple Number Windward/Leeward High634.9
Predominantly Upwind646.9
Predominantly Downwind604.8
Predominantly Reaching585.0
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance649.90.9232
Triple Number Coastal/Long Distance Low745.60.8047
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High543.61.1038
Triple Number Windward/Leeward Low951.50.6306
Triple Number Windward/Leeward Medium721.10.8321
Triple Number Windward/Leeward High634.90.9451
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1545.31047.4807.4687.8619.3582.6553.7508.6491.3
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8047
Triple Number Coastal/Long Distance Medium1.0045
Triple Number Coastal/Long Distance High1.1038
Triple Number Windward/Leeward Low0.6306
Triple Number Windward/Leeward Medium0.8321
Triple Number Windward/Leeward High0.9451
Coastal/Long Distance0.9232
Predominantly Upwind0.9275
Predominantly Downwind0.9920
For information
General Purpose Handicap (GPH)668.1
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.9992
Distanseseilas Trippeltall svak vind0.8047
Distanseseilas Trippeltall mellomvind1.0045
Distanseseilas Trippeltall sterk vind1.1038
Pølsebane Trippeltall svak vind0.6306
Pølsebane Trippeltall mellomvind0.8321
Pølsebane Trippeltall sterk vind0.9451
Motvind Singeltall0.9275
Medvind Singeltall0.9920
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low745.60.8047
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High543.61.1038
Triple Number Windward/Leeward Low951.50.6306
Triple Number Windward/Leeward Medium721.10.8321
Triple Number Windward/Leeward High634.90.9451
Coastal/Long Distance649.90.9232
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind646.90.9275
Predominantly Downwind604.80.9920
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore595.81.0071
Cape Doctor Coastal513.31.1689
Triple Number Coastal/Long Distance Low745.60.8047
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High543.61.1038
Triple Number Windward/Leeward Low951.50.6306
Triple Number Windward/Leeward Medium721.10.8321
Triple Number Windward/Leeward High634.90.9451
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8047
Triple Number Coastal/Long Distance Medium1.0045
Triple Number Coastal/Long Distance High1.1038
Triple Number Windward/Leeward Low0.6306
Triple Number Windward/Leeward Medium0.8321
Triple Number Windward/Leeward High0.9451
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8047
Triple Number Coastal/Long Distance Medium1.0045
Triple Number Coastal/Long Distance High1.1038
Triple Number Windward/Leeward Low0.6306
Triple Number Windward/Leeward Medium0.8321
Triple Number Windward/Leeward High0.9451
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance649.90.9232
Triple Number Coastal/Long Distance Low745.60.8047
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High543.61.1038
Triple Number Windward/Leeward Low951.50.6306
Triple Number Windward/Leeward Medium721.10.8321
Triple Number Windward/Leeward High634.90.9451
Predominantly Upwind646.90.9275
Predominantly Downwind604.80.9920
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1545.31047.4807.4687.8619.3582.6553.7508.6491.3
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance649.90.9232
Triple Number Coastal/Long Distance Low745.60.8047
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High543.61.1038
Triple Number Windward/Leeward Low951.50.6306
Triple Number Windward/Leeward Medium721.10.8321
Triple Number Windward/Leeward High634.90.9451
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1545.31047.4807.4687.8619.3582.6553.7508.6491.3
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low745.60.8047
Triple Number AP Medium597.41.0044
Triple Number AP High543.61.1038
Triple Number Windward/Leeward Low992.30.6047
Triple Number Windward/Leeward Medium721.10.8321
Triple Number Windward/Leeward High634.90.9451
Single Number Predominant Upwind669.00.8968
Single Number Predominant Reaching597.81.0037
Single Number Predominant Downwind630.60.9515
Predominant Upwind - Low882.70.6798
Predominant Upwind - Low/Med697.50.8603
Predominant Upwind - Medium630.70.9513
Predominant Upwind - Med/High595.21.0080
Predominant Upwind - High576.51.0408
Predominant Downwind Low901.80.6653
Predominant Downwind Low/Med677.30.8859
Predominant Downwind Medium585.71.0245
Predominant Downwind Med/High530.51.1310
Predominant Downwind High497.01.2073
Predominant Reaching Low798.40.7515
Predominant Reaching Low/Med627.30.9564
Predominant Reaching Medium563.91.0640
Predominant Reaching Med/High526.31.1401
Predominant Reaching High501.71.1958
SA/DSPL Upwind23.77SA/DSPL Downwind42.37
Scoring OptionTODTOT
5-Band Windward/Leeward Low1102.30.5443
5-Band Windward/Leeward Low/Med825.10.7272
5-Band Windward/Leeward Medium709.30.8459
5-Band Windward/Leeward Med/High643.80.9320
5-Band Windward/Leeward High612.30.9798
Windward/Leeward 60-40 Low1102.30.5443
Windward/Leeward 60-40 Low/Med834.10.7194
Windward/Leeward 60-40 Medium725.20.8274
Windward/Leeward 60-40 Med/High664.90.9024
Windward/Leeward 60-40 High636.40.9428
5-Band AP Low819.60.7320
5-Band AP Low/Med662.70.9054
5-Band AP Medium590.41.0163
5-Band AP Med/High549.81.0912
5-Band AP High526.91.1388
5-Band SF Bay Tour - Low953.70.6291
5-Band SF Bay Tour - Low/Med790.70.7589
5-Band SF Bay Tour - Medium688.80.8711
5-Band SF Bay Tour - Med/High632.20.9490
5-Band SF Bay Tour - High603.00.9950
Chicago-Mac Upwind0.8728
Chicago-Mac All Purpose0.8987
Chicago-Mac Downwind0.9203
Bayview-Mac Cove Island0.6744
Bayview-Mac Shore0.6795
Harvest Moon Regatta531.21.1296
Club Certificate2025
FATIMAESP-6600_C
RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
Class6M JIMeasurement06/03/2004HINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA10.040Max. Beam1.880Draft1.707Displacement4,543Wetted area18.30IMS L8.012LSM07.657Acc. length6.110Sink (kg/mm) 10.04
VCGD-0.625VCGM-0.767RM Rated (kg·m) 67.9Limit of positive stability(°) N/AStability IndexN/ADefault crew weight470Declared crew weight300
PROPELLER
Propeller TypeSolid 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.300PBWPIPA0.0114
PSD0.022PHD0.060PHL0.100
PSA23.9°ESL0.745
ST10.018ST20.115ST30.090
ST40.050ST50.115
RIG
Forestay tensionAftInner stayNone FittedMast materialSingle headsail furlerNoMainsail furlerArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays1CheckstaysSpreaders1Rotating mastNo
P12.730IG9.910ISP9.910MDT10.130MDL10.150MDT20.080MDL20.090TL3.080MW0.135GO0.135
E4.340J3.660BAS0.510FSD0.000SFJ0.450SPL4.030WPLTPSBD0.135MWT92.50MCG5.080
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered70.0Flotation Date09/02/2004
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
FATIMAESP-6600_C
RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentORC0.150.911.682.903.7333.58* Copied from legacy *
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentORC5.940.00NoNo 31.94* Copied from legacy *
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentORC10.7110.7110.719.428.9583.23* Copied from legacy *
CRUISER/RACER REQUIREMENTS*
Accommodation length6.1 mTable area0.22 m²Headroom1.40 mMinimum number of berths2Personal gear stowage0.08 m³Fresh water capacity1 lMinimum number of seats in cockpit2Food stowage0.12 m³Fuel capacity20 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.