Club Certificate2025
ESQUITX IIIESP-3078_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 Angles42.6°42.6°40.7°39.3°38.9°38.8°39.6°40.2°42.8°
Beat VMG2.413.263.874.254.404.444.454.334.09
52°3.704.895.666.066.246.316.336.296.16
60°3.915.115.846.206.396.486.526.516.45
75°4.045.255.966.326.546.706.806.876.90
90°3.945.175.936.346.606.806.977.227.33
110°3.815.126.026.486.797.047.237.507.56
120°3.654.975.926.446.797.107.397.888.23
135°3.224.515.556.226.626.977.318.109.19
150°2.723.894.935.776.316.687.007.728.74
Run VMG2.353.374.275.045.676.156.527.137.81
Gybe Angles147.1°147.1°151.4°155.5°163.3°170.0°177.2°177.2°168.1°
APH ToD:625.8CDL: 7.025APH ToT: 0.9587CertNo:307801
BOAT
ClassRUSH GTEDesignerR.HOLLANDBuilderJEANNEAUAge date01/1979Series date01/1978Offset fileF088.OFFData fileE3078_C
HULL
Length Overall9.240 mMaximum Beam3.132 mDraft1.664 mDisplacement3,118 kgDLR8.6949IMS DivisionCruiser/RacerDynamic Allowance0.070%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameter0.408m
CREW
Maximum weight200 kg(declared)Minimum weight130 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail21.6521.99Headsail Luffed28.3928.39Headsail FlyingSymmetric60.3460.34Asymmetric
STORM SAIL AREAS (m²)
Trysail6.50Storm Jib7.95Heavy Weather Jib21.45
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
ESQUITX IIIESP-3078_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 VMG1496.31105.2929.5848.0818.7810.2809.8831.4879.9
52°974.2735.9636.1594.3577.2570.9568.5572.0584.0
60°921.9704.6616.9580.4563.7555.7552.5552.8557.8
75°891.5685.6604.2569.3550.1537.6529.5524.2522.1
90°914.8696.5607.1568.1545.8529.3516.2498.7491.4
110°946.0702.8597.6555.2530.1511.3498.2480.1476.3
120°985.8724.4608.4559.1530.2506.9486.9456.7437.3
135°1117.1798.4649.2578.8543.4516.6492.3444.6391.7
150°1325.7925.6730.2624.0570.2539.3514.1466.5412.0
Run VMG1531.51068.8842.3713.8634.6585.0552.2505.0460.9
Selected Courses
Windward / Leeward1512.01087.0885.9780.9726.6697.6681.0668.2670.4
All purpose1155.1847.3707.4640.1606.4587.0574.2559.7554.5
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward758.10.7914
All purpose625.80.9587
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low777.40.7718
Triple Number Coastal/Long Distance Medium621.20.9659
Triple Number Coastal/Long Distance High572.01.0490
Triple Number Windward/Leeward Low986.50.6082
Triple Number Windward/Leeward Medium750.80.7992
Triple Number Windward/Leeward High680.30.8819
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.60.8868
Triple Number Coastal/Long Distance Low777.40.7718
Triple Number Coastal/Long Distance Medium621.20.9659
Triple Number Coastal/Long Distance High572.01.0490
Triple Number Windward/Leeward Low986.50.6082
Triple Number Windward/Leeward Medium750.80.7992
Triple Number Windward/Leeward High680.30.8819
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1598.41085.2836.8712.1645.0608.7579.6532.4522.3
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6826
Downwind "popa"0.8569
70% up, 30% down "Ilhabela"0.7270
30% up, 70% down "Ilhabela-inverso"0.7959
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low777.40.7718
Triple Number Coastal/Long Distance Medium621.20.9659
Triple Number Coastal/Long Distance High572.01.0490
Triple Number Windward/Leeward Low986.50.6082
Triple Number Windward/Leeward Medium750.80.7992
Triple Number Windward/Leeward High680.30.8819
Predominantly Upwind677.00.8863
Predominantly Downwind627.30.9565
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low777.40.7718
Triple Number AP Medium621.20.9658
Triple Number AP High572.01.0490
Triple Number Windward/Leeward Low1028.70.5833
Triple Number Windward/Leeward Medium750.80.7992
Triple Number Windward/Leeward High680.30.8819
Single Number Predominant Upwind703.20.8533
Single Number Predominant Reaching622.50.9639
Single Number Predominant Downwind654.20.9172
Predominant Upwind - Low924.90.6487
Predominant Upwind - Low/Med727.60.8247
Predominant Upwind - Medium658.90.9107
Predominant Upwind - Med/High630.90.9511
Predominant Upwind - High626.80.9572
Predominant Downwind Low933.60.6427
Predominant Downwind Low/Med701.80.8549
Predominant Downwind Medium607.70.9873
Predominant Downwind Med/High551.21.0886
Predominant Downwind High517.71.1591
Predominant Reaching Low834.00.7194
Predominant Reaching Low/Med653.40.9183
Predominant Reaching Medium586.01.0240
Predominant Reaching Med/High547.11.0967
Predominant Reaching High525.01.1429
SA/DSPL Upwind23.36SA/DSPL Downwind38.27
Scoring OptionTODTOT
5-Band Windward/Leeward Low1143.50.5247
5-Band Windward/Leeward Low/Med855.00.7018
5-Band Windward/Leeward Medium740.20.8106
5-Band Windward/Leeward Med/High685.50.8753
5-Band Windward/Leeward High670.80.8945
Windward/Leeward 60-40 Low1146.60.5233
Windward/Leeward 60-40 Low/Med866.00.6928
Windward/Leeward 60-40 Medium758.30.7912
Windward/Leeward 60-40 Med/High711.20.8436
Windward/Leeward 60-40 High703.80.8525
5-Band AP Low855.60.7013
5-Band AP Low/Med689.40.8704
5-Band AP Medium614.40.9765
5-Band AP Med/High576.61.0405
5-Band AP High561.31.0689
5-Band SF Bay Tour - Low991.50.6051
5-Band SF Bay Tour - Low/Med821.20.7306
5-Band SF Bay Tour - Medium719.70.8337
5-Band SF Bay Tour - Med/High672.90.8917
5-Band SF Bay Tour - High659.90.9093
Chicago-Mac Upwind0.8325
Chicago-Mac All Purpose0.8619
Chicago-Mac Downwind0.8877
Bayview-Mac Cove Island0.6475
Bayview-Mac Shore0.6520
Harvest Moon Regatta548.51.0938
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.60.8868
Triple Number Coastal/Long Distance Low777.40.7718
Triple Number Coastal/Long Distance Medium621.20.9659
Triple Number Coastal/Long Distance High572.01.0490
Triple Number Windward/Leeward Low986.50.6082
Triple Number Windward/Leeward Medium750.80.7992
Triple Number Windward/Leeward High680.30.8819
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1598.41085.2836.8712.1645.0608.7579.6532.4522.3
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.60.8868
Triple Number Coastal/Long Distance Low777.40.7718
Triple Number Coastal/Long Distance Medium621.20.9659
Triple Number Coastal/Long Distance High572.01.0490
Triple Number Windward/Leeward Low986.50.6082
Triple Number Windward/Leeward Medium750.80.7992
Triple Number Windward/Leeward High680.30.8819
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1598.41085.2836.8712.1645.0608.7579.6532.4522.3
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance676.6
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1598.41085.2836.8712.1645.0608.7579.6532.4522.3
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low777.40.7718
Triple Number Coastal/Long Distance Medium621.20.9659
Triple Number Coastal/Long Distance High572.01.0490
Triple Number Windward/Leeward Low986.50.6082
Triple Number Windward/Leeward Medium750.80.7992
Triple Number Windward/Leeward High680.30.8819
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating676.60.8868
FinRating, kevyt tuuli1124.50.8893
FinRating, kova tuuli564.90.8851
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low777.40.7718
Triple Number Coastal/Long Distance Medium621.20.9659
Triple Number Coastal/Long Distance High572.01.0490
Triple Number Windward/Leeward Low986.50.6082
Triple Number Windward/Leeward Medium750.80.7992
Triple Number Windward/Leeward High680.30.8819
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8868
Triple Number Coastal/Long Distance Low0.7718
Triple Number Coastal/Long Distance Medium0.9659
Triple Number Coastal/Long Distance High1.0490
Triple Number Windward/Leeward Low0.6082
Triple Number Windward/Leeward Medium0.7992
Triple Number Windward/Leeward High0.8819
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1598.41085.2836.8712.1645.0608.7579.6532.4522.3
For information
General Purpose Handicap (GPH)696.2
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.60.8868
Triple Number Coastal/Long Distance Low777.40.7718
Triple Number Coastal/Long Distance Medium621.20.9659
Triple Number Coastal/Long Distance High572.01.0490
Triple Number Windward/Leeward Low986.50.6082
Triple Number Windward/Leeward Medium750.80.7992
Triple Number Windward/Leeward High680.30.8819
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1598.41085.2836.8712.1645.0608.7579.6532.4522.3
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low777.40.7718
Triple Number Coastal/Long Distance Medium621.20.9659
Triple Number Coastal/Long Distance High572.01.0490
Triple Number Windward/Leeward Low986.50.6082
Triple Number Windward/Leeward Medium750.80.7992
Triple Number Windward/Leeward High680.30.8819
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.60.8868
Triple Number Coastal/Long Distance Low777.40.7718
Triple Number Coastal/Long Distance Medium621.20.9659
Triple Number Coastal/Long Distance High572.01.0490
Triple Number Windward/Leeward Low986.50.6082
Triple Number Windward/Leeward Medium750.80.7992
Triple Number Windward/Leeward High680.30.8819
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1598.41085.2836.8712.1645.0608.7579.6532.4522.3
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.60.8868
Triple Number Coastal/Long Distance Low777.40.7718
Triple Number Coastal/Long Distance Medium621.20.9659
Triple Number Coastal/Long Distance High572.01.0490
Triple Number Windward/Leeward Low986.50.6082
Triple Number Windward/Leeward Medium750.80.7992
Triple Number Windward/Leeward High680.30.8819
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1598.41085.2836.8712.1645.0608.7579.6532.4522.3
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low777.4
Triple Number Coastal/Long Distance Medium621.2
Triple Number Coastal/Long Distance High572.0
Triple Number Windward/Leeward Low986.5
Triple Number Windward/Leeward Medium750.8
Triple Number Windward/Leeward High680.3
Predominantly Upwind677.0
Predominantly Downwind627.3
Predominantly Reaching607.4
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.60.8868
Triple Number Coastal/Long Distance Low777.40.7718
Triple Number Coastal/Long Distance Medium621.20.9659
Triple Number Coastal/Long Distance High572.01.0490
Triple Number Windward/Leeward Low986.50.6082
Triple Number Windward/Leeward Medium750.80.7992
Triple Number Windward/Leeward High680.30.8819
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1598.41085.2836.8712.1645.0608.7579.6532.4522.3
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7718
Triple Number Coastal/Long Distance Medium0.9659
Triple Number Coastal/Long Distance High1.0490
Triple Number Windward/Leeward Low0.6082
Triple Number Windward/Leeward Medium0.7992
Triple Number Windward/Leeward High0.8819
Coastal/Long Distance0.8868
Predominantly Upwind0.8863
Predominantly Downwind0.9565
For information
General Purpose Handicap (GPH)696.2
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.9587
Distanseseilas Trippeltall svak vind0.7718
Distanseseilas Trippeltall mellomvind0.9659
Distanseseilas Trippeltall sterk vind1.0490
Pølsebane Trippeltall svak vind0.6082
Pølsebane Trippeltall mellomvind0.7992
Pølsebane Trippeltall sterk vind0.8819
Motvind Singeltall0.8863
Medvind Singeltall0.9565
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low777.40.7718
Triple Number Coastal/Long Distance Medium621.20.9659
Triple Number Coastal/Long Distance High572.01.0490
Triple Number Windward/Leeward Low986.50.6082
Triple Number Windward/Leeward Medium750.80.7992
Triple Number Windward/Leeward High680.30.8819
Coastal/Long Distance676.60.8868
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind677.00.8863
Predominantly Downwind627.30.9565
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore669.70.8959
Cape Doctor Coastal556.11.0790
Triple Number Coastal/Long Distance Low777.40.7718
Triple Number Coastal/Long Distance Medium621.20.9659
Triple Number Coastal/Long Distance High572.01.0490
Triple Number Windward/Leeward Low986.50.6082
Triple Number Windward/Leeward Medium750.80.7992
Triple Number Windward/Leeward High680.30.8819
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7718
Triple Number Coastal/Long Distance Medium0.9659
Triple Number Coastal/Long Distance High1.0490
Triple Number Windward/Leeward Low0.6082
Triple Number Windward/Leeward Medium0.7992
Triple Number Windward/Leeward High0.8819
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7718
Triple Number Coastal/Long Distance Medium0.9659
Triple Number Coastal/Long Distance High1.0490
Triple Number Windward/Leeward Low0.6082
Triple Number Windward/Leeward Medium0.7992
Triple Number Windward/Leeward High0.8819
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.60.8868
Triple Number Coastal/Long Distance Low777.40.7718
Triple Number Coastal/Long Distance Medium621.20.9659
Triple Number Coastal/Long Distance High572.01.0490
Triple Number Windward/Leeward Low986.50.6082
Triple Number Windward/Leeward Medium750.80.7992
Triple Number Windward/Leeward High680.30.8819
Predominantly Upwind677.00.8863
Predominantly Downwind627.30.9565
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1598.41085.2836.8712.1645.0608.7579.6532.4522.3
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance676.60.8868
Triple Number Coastal/Long Distance Low777.40.7718
Triple Number Coastal/Long Distance Medium621.20.9659
Triple Number Coastal/Long Distance High572.01.0490
Triple Number Windward/Leeward Low986.50.6082
Triple Number Windward/Leeward Medium750.80.7992
Triple Number Windward/Leeward High680.30.8819
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1598.41085.2836.8712.1645.0608.7579.6532.4522.3
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low777.40.7718
Triple Number AP Medium621.20.9658
Triple Number AP High572.01.0490
Triple Number Windward/Leeward Low1028.70.5833
Triple Number Windward/Leeward Medium750.80.7992
Triple Number Windward/Leeward High680.30.8819
Single Number Predominant Upwind703.20.8533
Single Number Predominant Reaching622.50.9639
Single Number Predominant Downwind654.20.9172
Predominant Upwind - Low924.90.6487
Predominant Upwind - Low/Med727.60.8247
Predominant Upwind - Medium658.90.9107
Predominant Upwind - Med/High630.90.9511
Predominant Upwind - High626.80.9572
Predominant Downwind Low933.60.6427
Predominant Downwind Low/Med701.80.8549
Predominant Downwind Medium607.70.9873
Predominant Downwind Med/High551.21.0886
Predominant Downwind High517.71.1591
Predominant Reaching Low834.00.7194
Predominant Reaching Low/Med653.40.9183
Predominant Reaching Medium586.01.0240
Predominant Reaching Med/High547.11.0967
Predominant Reaching High525.01.1429
SA/DSPL Upwind23.36SA/DSPL Downwind38.27
Scoring OptionTODTOT
5-Band Windward/Leeward Low1143.50.5247
5-Band Windward/Leeward Low/Med855.00.7018
5-Band Windward/Leeward Medium740.20.8106
5-Band Windward/Leeward Med/High685.50.8753
5-Band Windward/Leeward High670.80.8945
Windward/Leeward 60-40 Low1146.60.5233
Windward/Leeward 60-40 Low/Med866.00.6928
Windward/Leeward 60-40 Medium758.30.7912
Windward/Leeward 60-40 Med/High711.20.8436
Windward/Leeward 60-40 High703.80.8525
5-Band AP Low855.60.7013
5-Band AP Low/Med689.40.8704
5-Band AP Medium614.40.9765
5-Band AP Med/High576.61.0405
5-Band AP High561.31.0689
5-Band SF Bay Tour - Low991.50.6051
5-Band SF Bay Tour - Low/Med821.20.7306
5-Band SF Bay Tour - Medium719.70.8337
5-Band SF Bay Tour - Med/High672.90.8917
5-Band SF Bay Tour - High659.90.9093
Chicago-Mac Upwind0.8325
Chicago-Mac All Purpose0.8619
Chicago-Mac Downwind0.8877
Bayview-Mac Cove Island0.6475
Bayview-Mac Shore0.6520
Harvest Moon Regatta548.51.0938
Club Certificate2025
ESQUITX IIIESP-3078_C
RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassRUSH GTEMeasurement12/06/1991HINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA9.240Max. Beam3.132Draft1.664Displacement3,118Wetted area16.89IMS L7.396LSM07.104Acc. length9.240Sink (kg/mm) 12.10
VCGD-0.165VCGM-0.171RM Rated (kg·m) 68.4Limit of positive stability(°) N/AStability IndexN/ADefault crew weight423Declared crew weight200
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.408PBW0.114PIPA0.0046
PSD0.026PHD0.068PHL0.117
PSA24.0°ESL0.560
ST10.018ST20.072ST30.072
ST40.054ST50.160
RIG
Forestay tensionAftInner stayFixedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders2Rotating mastNo
P10.600IG12.500ISP12.620MDT10.129MDL10.180MDT20.129MDL20.180TLMW0.180GO0.210
E3.500J3.610BAS1.400FSD0.037SFJ0.000SPL3.750WPLTPSBD0.109MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered70.0Flotation Date21/02/1995
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
ESQUITX IIIESP-3078_C
RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentM10.150.711.292.172.8921.6520/08/2025
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentG10.060.601.182.413.705.0311.53NoNo 28.3920/08/2025
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentS111.1611.1611.166.506.4460.3406/03/2010
CRUISER/RACER REQUIREMENTS*
Accommodation length9.2 mTable area0.44 m²Headroom1.64 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity64 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity34 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.