Non Spin/HSFClub Certificate2025
NorteNOR 7471
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 Angles44.6°44.6°42.3°41.0°40.3°40.0°39.7°39.7°40.8°
Beat VMG2.233.103.804.274.554.674.754.774.70
52°3.544.795.706.276.566.716.786.836.82
60°3.785.075.966.476.746.896.977.047.06
75°3.945.266.146.636.917.097.227.367.43
90°3.845.176.096.646.957.177.367.647.82
110°3.344.665.726.466.897.187.447.918.39
120°3.114.395.466.286.787.107.377.888.47
135°2.653.834.915.786.446.867.157.688.26
150°2.203.264.285.175.926.496.887.427.95
Run VMG1.902.833.724.525.265.926.467.127.63
Gybe Angles148.0°148.0°152.5°159.5°167.6°174.1°178.6°177.7°177.5°
APH ToD:628.2CDL: 8.020APH ToT: 0.9550CertNo:8524
BOAT
ClassScanmar 345DesignerRolfMagnussonBuilderBr. BørjessonAge date01/1987Series date01/1987Offset fileL0029.bofData file8524
HULL
Length Overall10.543 mMaximum Beam3.372 mDraft1.731 mDisplacement5,372 kgDLR7.6922IMS DivisionCruiser/RacerDynamic Allowance0.380%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameter0.380m
CREW
Maximum weight300 kg(declared)Minimum weight170 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail32.2432.76Headsail Luffed29.8629.86Headsail FlyingSymmetricAsymmetric
STORM SAIL AREAS (m²)
Trysail9.49Storm Jib7.36Heavy Weather Jib19.87
SAIL LIMITS
Headsails5
✱ Zero set flying
Spinnakers0
✱ Spinnaker pole aboard
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.
Non Spin/HSFClub Certificate2025
NorteNOR 7471
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 VMG1611.31159.8948.3843.2791.9770.1758.3753.9765.9
52°1018.4751.9631.9574.3548.8536.8531.2526.9527.6
60°952.5710.5604.5556.2534.1522.5516.5511.2510.3
75°913.2684.6586.3542.8521.0507.7498.4488.9484.3
90°936.8696.5590.7542.4518.0501.9489.3471.2460.5
110°1077.2773.0629.5557.3522.6501.3484.2454.9429.2
120°1156.1820.3658.8573.5531.3507.3488.8456.6425.2
135°1360.7939.0733.6623.1559.4525.2503.4468.8435.9
150°1640.01103.5840.5696.9608.5554.4523.5485.2453.1
Run VMG1893.41274.2968.6795.6684.5608.1557.7505.7472.1
Selected Courses
Windward / Leeward1749.31217.0958.4819.4738.2689.1658.0629.8619.0
All purpose1302.1925.0745.2652.2601.5572.5554.2533.3520.6
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward777.10.7721
All purpose628.20.9550
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low835.10.7185
Triple Number Coastal/Long Distance Medium623.10.9629
Triple Number Coastal/Long Distance High551.01.0890
Triple Number Windward/Leeward Low1087.70.5516
Triple Number Windward/Leeward Medium771.30.7779
Triple Number Windward/Leeward High655.20.9157
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance687.00.8733
Triple Number Coastal/Long Distance Low835.10.7185
Triple Number Coastal/Long Distance Medium623.10.9629
Triple Number Coastal/Long Distance High551.01.0890
Triple Number Windward/Leeward Low1087.70.5516
Triple Number Windward/Leeward Medium771.30.7779
Triple Number Windward/Leeward High655.20.9157
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1889.41222.7901.5737.2643.1594.6560.4510.7495.1
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.6970
Downwind "popa"0.7786
70% up, 30% down "Ilhabela"0.7196
30% up, 70% down "Ilhabela-inverso"0.7522
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low835.10.7185
Triple Number Coastal/Long Distance Medium623.10.9629
Triple Number Coastal/Long Distance High551.01.0890
Triple Number Windward/Leeward Low1087.70.5516
Triple Number Windward/Leeward Medium771.30.7779
Triple Number Windward/Leeward High655.20.9157
Predominantly Upwind669.90.8957
Predominantly Downwind652.70.9193
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low835.10.7185
Triple Number AP Medium623.20.9628
Triple Number AP High550.91.0890
Triple Number Windward/Leeward Low1140.30.5262
Triple Number Windward/Leeward Medium771.30.7779
Triple Number Windward/Leeward High655.20.9157
Single Number Predominant Upwind698.90.8584
Single Number Predominant Reaching629.00.9540
Single Number Predominant Downwind688.50.8715
Predominant Upwind - Low985.40.6089
Predominant Upwind - Low/Med740.50.8103
Predominant Upwind - Medium645.30.9298
Predominant Upwind - Med/High599.91.0002
Predominant Upwind - High584.81.0260
Predominant Downwind Low1064.30.5637
Predominant Downwind Low/Med757.30.7923
Predominant Downwind Medium624.50.9608
Predominant Downwind Med/High547.01.0968
Predominant Downwind High511.81.1723
Predominant Reaching Low903.20.6643
Predominant Reaching Low/Med673.10.8915
Predominant Reaching Medium580.51.0336
Predominant Reaching Med/High530.51.1310
Predominant Reaching High507.21.1831
SA/DSPL Upwind20.14SA/DSPL Downwind20.14
Scoring OptionTODTOT
5-Band Windward/Leeward Low1286.20.4665
5-Band Windward/Leeward Low/Med915.00.6557
5-Band Windward/Leeward Medium755.10.7945
5-Band Windward/Leeward Med/High665.30.9019
5-Band Windward/Leeward High632.80.9481
Windward/Leeward 60-40 Low1272.90.4714
Windward/Leeward 60-40 Low/Med915.80.6551
Windward/Leeward 60-40 Medium765.50.7838
Windward/Leeward 60-40 Med/High684.70.8763
Windward/Leeward 60-40 High657.60.9124
5-Band AP Low939.50.6387
5-Band AP Low/Med717.70.8360
5-Band AP Medium613.10.9786
5-Band AP Med/High557.71.0758
5-Band AP High534.71.1221
5-Band SF Bay Tour - Low1095.40.5477
5-Band SF Bay Tour - Low/Med872.20.6879
5-Band SF Bay Tour - Medium728.70.8233
5-Band SF Bay Tour - Med/High652.10.9201
5-Band SF Bay Tour - High624.50.9608
Chicago-Mac Upwind0.8305
Chicago-Mac All Purpose0.8378
Chicago-Mac Downwind0.8356
Bayview-Mac Cove Island0.5942
Bayview-Mac Shore0.6010
Harvest Moon Regatta543.81.1033
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance687.00.8733
Triple Number Coastal/Long Distance Low835.10.7185
Triple Number Coastal/Long Distance Medium623.10.9629
Triple Number Coastal/Long Distance High551.01.0890
Triple Number Windward/Leeward Low1087.70.5516
Triple Number Windward/Leeward Medium771.30.7779
Triple Number Windward/Leeward High655.20.9157
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1889.41222.7901.5737.2643.1594.6560.4510.7495.1
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance687.00.8733
Triple Number Coastal/Long Distance Low835.10.7185
Triple Number Coastal/Long Distance Medium623.10.9629
Triple Number Coastal/Long Distance High551.01.0890
Triple Number Windward/Leeward Low1087.70.5516
Triple Number Windward/Leeward Medium771.30.7779
Triple Number Windward/Leeward High655.20.9157
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1889.41222.7901.5737.2643.1594.6560.4510.7495.1
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance687.0
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1889.41222.7901.5737.2643.1594.6560.4510.7495.1
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low835.10.7185
Triple Number Coastal/Long Distance Medium623.10.9629
Triple Number Coastal/Long Distance High551.01.0890
Triple Number Windward/Leeward Low1087.70.5516
Triple Number Windward/Leeward Medium771.30.7779
Triple Number Windward/Leeward High655.20.9157
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating687.00.8733
FinRating, kevyt tuuli1266.50.7896
FinRating, kova tuuli538.70.9282
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low835.10.7185
Triple Number Coastal/Long Distance Medium623.10.9629
Triple Number Coastal/Long Distance High551.01.0890
Triple Number Windward/Leeward Low1087.70.5516
Triple Number Windward/Leeward Medium771.30.7779
Triple Number Windward/Leeward High655.20.9157
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.8733
Triple Number Coastal/Long Distance Low0.7185
Triple Number Coastal/Long Distance Medium0.9629
Triple Number Coastal/Long Distance High1.0890
Triple Number Windward/Leeward Low0.5516
Triple Number Windward/Leeward Medium0.7779
Triple Number Windward/Leeward High0.9157
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1889.41222.7901.5737.2643.1594.6560.4510.7495.1
For information
General Purpose Handicap (GPH)710.9
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance687.00.8733
Triple Number Coastal/Long Distance Low835.10.7185
Triple Number Coastal/Long Distance Medium623.10.9629
Triple Number Coastal/Long Distance High551.01.0890
Triple Number Windward/Leeward Low1087.70.5516
Triple Number Windward/Leeward Medium771.30.7779
Triple Number Windward/Leeward High655.20.9157
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1889.41222.7901.5737.2643.1594.6560.4510.7495.1
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low835.10.7185
Triple Number Coastal/Long Distance Medium623.10.9629
Triple Number Coastal/Long Distance High551.01.0890
Triple Number Windward/Leeward Low1087.70.5516
Triple Number Windward/Leeward Medium771.30.7779
Triple Number Windward/Leeward High655.20.9157
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance687.00.8733
Triple Number Coastal/Long Distance Low835.10.7185
Triple Number Coastal/Long Distance Medium623.10.9629
Triple Number Coastal/Long Distance High551.01.0890
Triple Number Windward/Leeward Low1087.70.5516
Triple Number Windward/Leeward Medium771.30.7779
Triple Number Windward/Leeward High655.20.9157
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1889.41222.7901.5737.2643.1594.6560.4510.7495.1
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance687.00.8733
Triple Number Coastal/Long Distance Low835.10.7185
Triple Number Coastal/Long Distance Medium623.10.9629
Triple Number Coastal/Long Distance High551.01.0890
Triple Number Windward/Leeward Low1087.70.5516
Triple Number Windward/Leeward Medium771.30.7779
Triple Number Windward/Leeward High655.20.9157
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1889.41222.7901.5737.2643.1594.6560.4510.7495.1
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low835.1
Triple Number Coastal/Long Distance Medium623.1
Triple Number Coastal/Long Distance High551.0
Triple Number Windward/Leeward Low1087.7
Triple Number Windward/Leeward Medium771.3
Triple Number Windward/Leeward High655.2
Predominantly Upwind669.9
Predominantly Downwind652.7
Predominantly Reaching617.4
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance687.00.8733
Triple Number Coastal/Long Distance Low835.10.7185
Triple Number Coastal/Long Distance Medium623.10.9629
Triple Number Coastal/Long Distance High551.01.0890
Triple Number Windward/Leeward Low1087.70.5516
Triple Number Windward/Leeward Medium771.30.7779
Triple Number Windward/Leeward High655.20.9157
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1889.41222.7901.5737.2643.1594.6560.4510.7495.1
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7185
Triple Number Coastal/Long Distance Medium0.9629
Triple Number Coastal/Long Distance High1.0890
Triple Number Windward/Leeward Low0.5516
Triple Number Windward/Leeward Medium0.7779
Triple Number Windward/Leeward High0.9157
Coastal/Long Distance0.8733
Predominantly Upwind0.8957
Predominantly Downwind0.9193
For information
General Purpose Handicap (GPH)710.9
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.9550
Distanseseilas Trippeltall svak vind0.7185
Distanseseilas Trippeltall mellomvind0.9629
Distanseseilas Trippeltall sterk vind1.0890
Pølsebane Trippeltall svak vind0.5516
Pølsebane Trippeltall mellomvind0.7779
Pølsebane Trippeltall sterk vind0.9157
Motvind Singeltall0.8957
Medvind Singeltall0.9193
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low835.10.7185
Triple Number Coastal/Long Distance Medium623.10.9629
Triple Number Coastal/Long Distance High551.01.0890
Triple Number Windward/Leeward Low1087.70.5516
Triple Number Windward/Leeward Medium771.30.7779
Triple Number Windward/Leeward High655.20.9157
Coastal/Long Distance687.00.8733
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind669.90.8957
Predominantly Downwind652.70.9193
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore622.30.9642
Cape Doctor Coastal524.41.1441
Triple Number Coastal/Long Distance Low835.10.7185
Triple Number Coastal/Long Distance Medium623.10.9629
Triple Number Coastal/Long Distance High551.01.0890
Triple Number Windward/Leeward Low1087.70.5516
Triple Number Windward/Leeward Medium771.30.7779
Triple Number Windward/Leeward High655.20.9157
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7185
Triple Number Coastal/Long Distance Medium0.9629
Triple Number Coastal/Long Distance High1.0890
Triple Number Windward/Leeward Low0.5516
Triple Number Windward/Leeward Medium0.7779
Triple Number Windward/Leeward High0.9157
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7185
Triple Number Coastal/Long Distance Medium0.9629
Triple Number Coastal/Long Distance High1.0890
Triple Number Windward/Leeward Low0.5516
Triple Number Windward/Leeward Medium0.7779
Triple Number Windward/Leeward High0.9157
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance687.00.8733
Triple Number Coastal/Long Distance Low835.10.7185
Triple Number Coastal/Long Distance Medium623.10.9629
Triple Number Coastal/Long Distance High551.01.0890
Triple Number Windward/Leeward Low1087.70.5516
Triple Number Windward/Leeward Medium771.30.7779
Triple Number Windward/Leeward High655.20.9157
Predominantly Upwind669.90.8957
Predominantly Downwind652.70.9193
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1889.41222.7901.5737.2643.1594.6560.4510.7495.1
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance687.00.8733
Triple Number Coastal/Long Distance Low835.10.7185
Triple Number Coastal/Long Distance Medium623.10.9629
Triple Number Coastal/Long Distance High551.01.0890
Triple Number Windward/Leeward Low1087.70.5516
Triple Number Windward/Leeward Medium771.30.7779
Triple Number Windward/Leeward High655.20.9157
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1889.41222.7901.5737.2643.1594.6560.4510.7495.1
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low835.10.7185
Triple Number AP Medium623.20.9628
Triple Number AP High550.91.0890
Triple Number Windward/Leeward Low1140.30.5262
Triple Number Windward/Leeward Medium771.30.7779
Triple Number Windward/Leeward High655.20.9157
Single Number Predominant Upwind698.90.8584
Single Number Predominant Reaching629.00.9540
Single Number Predominant Downwind688.50.8715
Predominant Upwind - Low985.40.6089
Predominant Upwind - Low/Med740.50.8103
Predominant Upwind - Medium645.30.9298
Predominant Upwind - Med/High599.91.0002
Predominant Upwind - High584.81.0260
Predominant Downwind Low1064.30.5637
Predominant Downwind Low/Med757.30.7923
Predominant Downwind Medium624.50.9608
Predominant Downwind Med/High547.01.0968
Predominant Downwind High511.81.1723
Predominant Reaching Low903.20.6643
Predominant Reaching Low/Med673.10.8915
Predominant Reaching Medium580.51.0336
Predominant Reaching Med/High530.51.1310
Predominant Reaching High507.21.1831
SA/DSPL Upwind20.14SA/DSPL Downwind20.14
Scoring OptionTODTOT
5-Band Windward/Leeward Low1286.20.4665
5-Band Windward/Leeward Low/Med915.00.6557
5-Band Windward/Leeward Medium755.10.7945
5-Band Windward/Leeward Med/High665.30.9019
5-Band Windward/Leeward High632.80.9481
Windward/Leeward 60-40 Low1272.90.4714
Windward/Leeward 60-40 Low/Med915.80.6551
Windward/Leeward 60-40 Medium765.50.7838
Windward/Leeward 60-40 Med/High684.70.8763
Windward/Leeward 60-40 High657.60.9124
5-Band AP Low939.50.6387
5-Band AP Low/Med717.70.8360
5-Band AP Medium613.10.9786
5-Band AP Med/High557.71.0758
5-Band AP High534.71.1221
5-Band SF Bay Tour - Low1095.40.5477
5-Band SF Bay Tour - Low/Med872.20.6879
5-Band SF Bay Tour - Medium728.70.8233
5-Band SF Bay Tour - Med/High652.10.9201
5-Band SF Bay Tour - High624.50.9608
Chicago-Mac Upwind0.8305
Chicago-Mac All Purpose0.8378
Chicago-Mac Downwind0.8356
Bayview-Mac Cove Island0.5942
Bayview-Mac Shore0.6010
Harvest Moon Regatta543.81.1033
Non Spin/HSFClub Certificate2025
NorteNOR 7471
Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassScanmar 345MeasurementHINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA10.543Max. Beam3.372Draft1.731Displacement5,372Wetted area23.53IMS L8.928LSM08.871Acc. length10.543Sink (kg/mm) 16.91
VCGD-0.120VCGM-0.071RM Rated (kg·m) 109.7Limit of positive stability(°) N/AStability IndexN/ADefault crew weight580Declared crew weight300
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.380PBWPIPA0.0088
PSD0.030PHD0.100PHL0.130
PSA1.0°ESL1.150
ST10.050ST20.190ST30.190
ST40.190ST50.190
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders1Rotating mastNo
P12.900IG12.130ISP12.110MDT10.140MDL10.190MDT20.140MDL20.140TL2.400MW0.000GO0.000
E4.200J3.950BAS1.540FSDFoilSFJ0.000SPL4.080WPLTPS4.700BD0.000MWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.120Flotation Date01/01/2015
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Non Spin/HSFClub Certificate2025
NorteNOR 7471
Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment394-2024040307320.050.751.402.503.9632.2403/04/2024
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment394-2024040307340.050.601.202.503.905.4411.50NoNo 29.8603/04/2024466-2014052612330.060.581.122.042.903.7711.44NoNo 22.6726/05/2014
CRUISER/RACER REQUIREMENTS*
Accommodation length10.5 mTable area0.44 m²Headroom1.73 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity90 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity60 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.