Club Certificate2025
POSEIDONESP-6392_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 Angles45.9°45.9°43.9°42.3°40.8°40.1°39.7°40.5°41.8°
Beat VMG2.353.284.054.625.035.255.355.405.32
52°3.765.156.196.917.337.587.717.797.79
60°4.085.506.527.177.557.797.938.058.10
75°4.305.766.767.387.748.008.208.488.62
90°4.195.666.707.377.798.078.308.739.06
110°3.955.496.727.507.968.328.659.199.55
120°3.805.316.537.387.898.288.659.3810.14
135°3.334.745.976.957.608.048.429.2110.19
150°2.754.015.196.217.047.628.038.769.58
Run VMG2.383.474.495.386.166.827.358.128.79
Gybe Angles145.3°145.3°148.9°151.9°155.9°162.4°168.2°177.2°177.2°
APH ToD:551.8CDL: 9.862APH ToT: 1.0873CertNo:639201
BOAT
ClassFIRST 42 S7 (WK)DesignerBRUCE FARRBuilderBENETEAUAge date02/2000Series date11/1993Offset fileFIRST42S7-WK.offData fileE6392_C
HULL
Length Overall12.688 mMaximum Beam4.130 mDraft1.776 mDisplacement8,365 kgDLR6.7013IMS DivisionCruiser/RacerDynamic Allowance0.370%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFeathering 3 bladesDiameter0.400m
CREW
Maximum weight490 kg(declared)Minimum weight360 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail37.8938.34Headsail Luffed47.2147.21Headsail FlyingSymmetric101.38101.38Asymmetric
STORM SAIL AREAS (m²)
Trysail11.87Storm Jib11.94Heavy Weather Jib32.23
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
POSEIDONESP-6392_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 VMG1533.81096.4888.7779.0716.0685.5672.6666.4676.8
52°956.7699.7581.3521.3490.9475.2467.2462.0461.9
60°883.1654.3551.9501.8476.6462.4453.7446.9444.4
75°837.4625.5532.6488.1465.1450.2439.0424.4417.6
90°858.5636.5537.3488.6461.9446.2433.8412.2397.5
110°912.0655.2535.8479.9452.2432.7416.3391.5377.1
120°946.8678.0551.0487.6456.1434.7416.3383.9355.0
135°1079.6758.9603.0518.3473.7448.0427.7390.9353.4
150°1310.6897.2693.9580.1511.2472.2448.3411.0375.7
Run VMG1513.21036.0801.3668.9584.4528.0489.9443.4409.6
Selected Courses
Windward / Leeward1522.41066.2845.0724.0650.2606.8581.2554.9543.2
All purpose1139.1812.4656.9575.1528.5501.6484.6463.2449.9
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward684.90.8761
All purpose551.81.0873
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low734.70.8167
Triple Number Coastal/Long Distance Medium548.01.0949
Triple Number Coastal/Long Distance High480.81.2479
Triple Number Windward/Leeward Low955.60.6279
Triple Number Windward/Leeward Medium680.10.8822
Triple Number Windward/Leeward High577.81.0385
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance603.20.9946
Triple Number Coastal/Long Distance Low734.70.8167
Triple Number Coastal/Long Distance Medium548.01.0949
Triple Number Coastal/Long Distance High480.81.2479
Triple Number Windward/Leeward Low955.60.6279
Triple Number Windward/Leeward Medium680.10.8822
Triple Number Windward/Leeward High577.81.0385
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1620.11063.2792.7650.2565.2521.0489.8442.2425.5
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7630
Downwind "popa"0.9227
70% up, 30% down "Ilhabela"0.8048
30% up, 70% down "Ilhabela-inverso"0.8682
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low734.70.8167
Triple Number Coastal/Long Distance Medium548.01.0949
Triple Number Coastal/Long Distance High480.81.2479
Triple Number Windward/Leeward Low955.60.6279
Triple Number Windward/Leeward Medium680.10.8822
Triple Number Windward/Leeward High577.81.0385
Predominantly Upwind598.11.0033
Predominantly Downwind563.31.0651
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low734.60.8167
Triple Number AP Medium548.11.0948
Triple Number AP High480.81.2479
Triple Number Windward/Leeward Low1000.30.5998
Triple Number Windward/Leeward Medium680.10.8822
Triple Number Windward/Leeward High577.81.0385
Single Number Predominant Upwind624.70.9605
Single Number Predominant Reaching550.61.0897
Single Number Predominant Downwind590.71.0157
Predominant Upwind - Low894.70.6706
Predominant Upwind - Low/Med668.10.8981
Predominant Upwind - Medium575.21.0431
Predominant Upwind - Med/High528.51.1353
Predominant Upwind - High512.21.1714
Predominant Downwind Low896.10.6696
Predominant Downwind Low/Med647.50.9266
Predominant Downwind Medium539.81.1115
Predominant Downwind Med/High475.71.2613
Predominant Downwind High441.91.3577
Predominant Reaching Low789.80.7597
Predominant Reaching Low/Med591.11.0151
Predominant Reaching Medium509.51.1777
Predominant Reaching Med/High463.61.2941
Predominant Reaching High439.01.3667
SA/DSPL Upwind20.51SA/DSPL Downwind33.56
Scoring OptionTODTOT
5-Band Windward/Leeward Low1125.20.5332
5-Band Windward/Leeward Low/Med806.10.7443
5-Band Windward/Leeward Medium665.70.9013
5-Band Windward/Leeward Med/High586.91.0223
5-Band Windward/Leeward High557.41.0764
Windward/Leeward 60-40 Low1130.90.5305
Windward/Leeward 60-40 Low/Med815.90.7354
Windward/Leeward 60-40 Medium679.00.8837
Windward/Leeward 60-40 Med/High605.00.9918
Windward/Leeward 60-40 High579.81.0349
5-Band AP Low814.60.7366
5-Band AP Low/Med632.00.9494
5-Band AP Medium538.81.1137
5-Band AP Med/High487.61.2306
5-Band AP High464.61.2914
5-Band SF Bay Tour - Low965.30.6216
5-Band SF Bay Tour - Low/Med770.50.7787
5-Band SF Bay Tour - Medium642.30.9341
5-Band SF Bay Tour - Med/High573.01.0472
5-Band SF Bay Tour - High546.71.0975
Chicago-Mac Upwind0.9258
Chicago-Mac All Purpose0.9539
Chicago-Mac Downwind0.9750
Bayview-Mac Cove Island0.6794
Bayview-Mac Shore0.6848
Harvest Moon Regatta474.91.2635
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance603.20.9946
Triple Number Coastal/Long Distance Low734.70.8167
Triple Number Coastal/Long Distance Medium548.01.0949
Triple Number Coastal/Long Distance High480.81.2479
Triple Number Windward/Leeward Low955.60.6279
Triple Number Windward/Leeward Medium680.10.8822
Triple Number Windward/Leeward High577.81.0385
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1620.11063.2792.7650.2565.2521.0489.8442.2425.5
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance603.20.9946
Triple Number Coastal/Long Distance Low734.70.8167
Triple Number Coastal/Long Distance Medium548.01.0949
Triple Number Coastal/Long Distance High480.81.2479
Triple Number Windward/Leeward Low955.60.6279
Triple Number Windward/Leeward Medium680.10.8822
Triple Number Windward/Leeward High577.81.0385
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1620.11063.2792.7650.2565.2521.0489.8442.2425.5
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance603.2
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1620.11063.2792.7650.2565.2521.0489.8442.2425.5
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low734.70.8167
Triple Number Coastal/Long Distance Medium548.01.0949
Triple Number Coastal/Long Distance High480.81.2479
Triple Number Windward/Leeward Low955.60.6279
Triple Number Windward/Leeward Medium680.10.8822
Triple Number Windward/Leeward High577.81.0385
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating603.20.9946
FinRating, kevyt tuuli1103.80.9060
FinRating, kova tuuli467.21.0701
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low734.70.8167
Triple Number Coastal/Long Distance Medium548.01.0949
Triple Number Coastal/Long Distance High480.81.2479
Triple Number Windward/Leeward Low955.60.6279
Triple Number Windward/Leeward Medium680.10.8822
Triple Number Windward/Leeward High577.81.0385
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9946
Triple Number Coastal/Long Distance Low0.8167
Triple Number Coastal/Long Distance Medium1.0949
Triple Number Coastal/Long Distance High1.2479
Triple Number Windward/Leeward Low0.6279
Triple Number Windward/Leeward Medium0.8822
Triple Number Windward/Leeward High1.0385
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1620.11063.2792.7650.2565.2521.0489.8442.2425.5
For information
General Purpose Handicap (GPH)624.7
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance603.20.9946
Triple Number Coastal/Long Distance Low734.70.8167
Triple Number Coastal/Long Distance Medium548.01.0949
Triple Number Coastal/Long Distance High480.81.2479
Triple Number Windward/Leeward Low955.60.6279
Triple Number Windward/Leeward Medium680.10.8822
Triple Number Windward/Leeward High577.81.0385
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1620.11063.2792.7650.2565.2521.0489.8442.2425.5
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low734.70.8167
Triple Number Coastal/Long Distance Medium548.01.0949
Triple Number Coastal/Long Distance High480.81.2479
Triple Number Windward/Leeward Low955.60.6279
Triple Number Windward/Leeward Medium680.10.8822
Triple Number Windward/Leeward High577.81.0385
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance603.20.9946
Triple Number Coastal/Long Distance Low734.70.8167
Triple Number Coastal/Long Distance Medium548.01.0949
Triple Number Coastal/Long Distance High480.81.2479
Triple Number Windward/Leeward Low955.60.6279
Triple Number Windward/Leeward Medium680.10.8822
Triple Number Windward/Leeward High577.81.0385
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1620.11063.2792.7650.2565.2521.0489.8442.2425.5
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance603.20.9946
Triple Number Coastal/Long Distance Low734.70.8167
Triple Number Coastal/Long Distance Medium548.01.0949
Triple Number Coastal/Long Distance High480.81.2479
Triple Number Windward/Leeward Low955.60.6279
Triple Number Windward/Leeward Medium680.10.8822
Triple Number Windward/Leeward High577.81.0385
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1620.11063.2792.7650.2565.2521.0489.8442.2425.5
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low734.7
Triple Number Coastal/Long Distance Medium548.0
Triple Number Coastal/Long Distance High480.8
Triple Number Windward/Leeward Low955.6
Triple Number Windward/Leeward Medium680.1
Triple Number Windward/Leeward High577.8
Predominantly Upwind598.1
Predominantly Downwind563.3
Predominantly Reaching538.2
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance603.20.9946
Triple Number Coastal/Long Distance Low734.70.8167
Triple Number Coastal/Long Distance Medium548.01.0949
Triple Number Coastal/Long Distance High480.81.2479
Triple Number Windward/Leeward Low955.60.6279
Triple Number Windward/Leeward Medium680.10.8822
Triple Number Windward/Leeward High577.81.0385
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1620.11063.2792.7650.2565.2521.0489.8442.2425.5
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8167
Triple Number Coastal/Long Distance Medium1.0949
Triple Number Coastal/Long Distance High1.2479
Triple Number Windward/Leeward Low0.6279
Triple Number Windward/Leeward Medium0.8822
Triple Number Windward/Leeward High1.0385
Coastal/Long Distance0.9946
Predominantly Upwind1.0033
Predominantly Downwind1.0651
For information
General Purpose Handicap (GPH)624.7
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.0873
Distanseseilas Trippeltall svak vind0.8167
Distanseseilas Trippeltall mellomvind1.0949
Distanseseilas Trippeltall sterk vind1.2479
Pølsebane Trippeltall svak vind0.6279
Pølsebane Trippeltall mellomvind0.8822
Pølsebane Trippeltall sterk vind1.0385
Motvind Singeltall1.0033
Medvind Singeltall1.0651
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low734.70.8167
Triple Number Coastal/Long Distance Medium548.01.0949
Triple Number Coastal/Long Distance High480.81.2479
Triple Number Windward/Leeward Low955.60.6279
Triple Number Windward/Leeward Medium680.10.8822
Triple Number Windward/Leeward High577.81.0385
Coastal/Long Distance603.20.9946
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind598.11.0033
Predominantly Downwind563.31.0651
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore546.71.0975
Cape Doctor Coastal453.91.3219
Triple Number Coastal/Long Distance Low734.70.8167
Triple Number Coastal/Long Distance Medium548.01.0949
Triple Number Coastal/Long Distance High480.81.2479
Triple Number Windward/Leeward Low955.60.6279
Triple Number Windward/Leeward Medium680.10.8822
Triple Number Windward/Leeward High577.81.0385
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8167
Triple Number Coastal/Long Distance Medium1.0949
Triple Number Coastal/Long Distance High1.2479
Triple Number Windward/Leeward Low0.6279
Triple Number Windward/Leeward Medium0.8822
Triple Number Windward/Leeward High1.0385
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8167
Triple Number Coastal/Long Distance Medium1.0949
Triple Number Coastal/Long Distance High1.2479
Triple Number Windward/Leeward Low0.6279
Triple Number Windward/Leeward Medium0.8822
Triple Number Windward/Leeward High1.0385
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance603.20.9946
Triple Number Coastal/Long Distance Low734.70.8167
Triple Number Coastal/Long Distance Medium548.01.0949
Triple Number Coastal/Long Distance High480.81.2479
Triple Number Windward/Leeward Low955.60.6279
Triple Number Windward/Leeward Medium680.10.8822
Triple Number Windward/Leeward High577.81.0385
Predominantly Upwind598.11.0033
Predominantly Downwind563.31.0651
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1620.11063.2792.7650.2565.2521.0489.8442.2425.5
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance603.20.9946
Triple Number Coastal/Long Distance Low734.70.8167
Triple Number Coastal/Long Distance Medium548.01.0949
Triple Number Coastal/Long Distance High480.81.2479
Triple Number Windward/Leeward Low955.60.6279
Triple Number Windward/Leeward Medium680.10.8822
Triple Number Windward/Leeward High577.81.0385
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1620.11063.2792.7650.2565.2521.0489.8442.2425.5
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low734.60.8167
Triple Number AP Medium548.11.0948
Triple Number AP High480.81.2479
Triple Number Windward/Leeward Low1000.30.5998
Triple Number Windward/Leeward Medium680.10.8822
Triple Number Windward/Leeward High577.81.0385
Single Number Predominant Upwind624.70.9605
Single Number Predominant Reaching550.61.0897
Single Number Predominant Downwind590.71.0157
Predominant Upwind - Low894.70.6706
Predominant Upwind - Low/Med668.10.8981
Predominant Upwind - Medium575.21.0431
Predominant Upwind - Med/High528.51.1353
Predominant Upwind - High512.21.1714
Predominant Downwind Low896.10.6696
Predominant Downwind Low/Med647.50.9266
Predominant Downwind Medium539.81.1115
Predominant Downwind Med/High475.71.2613
Predominant Downwind High441.91.3577
Predominant Reaching Low789.80.7597
Predominant Reaching Low/Med591.11.0151
Predominant Reaching Medium509.51.1777
Predominant Reaching Med/High463.61.2941
Predominant Reaching High439.01.3667
SA/DSPL Upwind20.51SA/DSPL Downwind33.56
Scoring OptionTODTOT
5-Band Windward/Leeward Low1125.20.5332
5-Band Windward/Leeward Low/Med806.10.7443
5-Band Windward/Leeward Medium665.70.9013
5-Band Windward/Leeward Med/High586.91.0223
5-Band Windward/Leeward High557.41.0764
Windward/Leeward 60-40 Low1130.90.5305
Windward/Leeward 60-40 Low/Med815.90.7354
Windward/Leeward 60-40 Medium679.00.8837
Windward/Leeward 60-40 Med/High605.00.9918
Windward/Leeward 60-40 High579.81.0349
5-Band AP Low814.60.7366
5-Band AP Low/Med632.00.9494
5-Band AP Medium538.81.1137
5-Band AP Med/High487.61.2306
5-Band AP High464.61.2914
5-Band SF Bay Tour - Low965.30.6216
5-Band SF Bay Tour - Low/Med770.50.7787
5-Band SF Bay Tour - Medium642.30.9341
5-Band SF Bay Tour - Med/High573.01.0472
5-Band SF Bay Tour - High546.71.0975
Chicago-Mac Upwind0.9258
Chicago-Mac All Purpose0.9539
Chicago-Mac Downwind0.9750
Bayview-Mac Cove Island0.6794
Bayview-Mac Shore0.6848
Harvest Moon Regatta474.91.2635
Club Certificate2025
POSEIDONESP-6392_C
RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassFIRST 42 S7 (WK)Measurement18/07/2023HINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA12.688Max. Beam4.130Draft1.776Displacement8,365Wetted area32.74IMS L11.023LSM010.766Acc. length12.688Sink (kg/mm) 24.70
VCGD-0.146VCGM-0.161RM Rated (kg·m) 247.6Limit of positive stability(°) N/AStability IndexN/ADefault crew weight765Declared crew weight490
PROPELLER
Propeller TypeFeathering 3 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.400PBWPIPA0.0061
PSD0.030PHD0.070PHL0.100
PSA18.8°ESL1.130
ST10.040ST20.130ST30.130
ST40.061ST50.276
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders2Rotating mastNo
P14.120IG15.450ISP15.600MDT10.100MDL10.110MDT2MDL2TLMWGO
E4.800J4.250BAS1.810FSD0.030SFJ0.000SPL4.400WPLTPSBD0.180MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered250.0Flotation Date01/01/2010
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
POSEIDONESP-6392_C
RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.140.811.552.823.9137.8918/07/2023
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment10.090.811.513.064.696.3515.10NoNo 47.2118/07/2023
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment10.00101.38
CRUISER/RACER REQUIREMENTS*
Accommodation length12.7 mTable area0.55 m²Headroom1.84 mMinimum number of berths5Personal gear stowage0.20 m³Fresh water capacity167 lMinimum number of seats in cockpit5Food stowage0.30 m³Fuel capacity104 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.