Double HandedClub Certificate2025
MerimörköFIN 9631
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
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 Angles43.8°43.8°41.9°41.1°40.4°40.1°39.9°40.1°41.8°
Beat VMG2.753.764.514.935.135.235.295.315.16
52°4.315.776.747.257.477.587.657.717.67
60°4.606.087.027.507.737.837.907.987.98
75°4.826.317.217.707.978.158.268.428.49
90°4.706.207.167.718.058.318.538.849.04
110°4.396.017.217.878.308.678.949.359.57
120°4.255.857.067.788.248.669.079.8010.33
135°3.745.246.477.377.938.368.809.7611.11
150°3.074.395.566.567.347.858.249.009.91
Run VMG2.663.804.815.686.376.887.318.038.70
Gybe Angles142.2°142.2°146.7°149.4°151.6°155.8°161.2°176.3°176.1°
APH ToD:529.9CDL: 10.138APH ToT: 1.1323CertNo:
BOAT
ClassFinngulf 41DesignerStrahlmanBuilderFinngulfAge date01/2003Series date02/2002Offset fileFINNGULF41-CRUISER.offData fileFIN9631
HULL
Length Overall12.495 mMaximum Beam3.844 mDraft1.829 mDisplacement8,500 kgDLR6.0473IMS DivisionCruiser/RacerDynamic Allowance0.170%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 3 bladesDiameter0.454m
CREW
Maximum weight170 kg(declared)Minimum weight120 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail50.9851.91Headsail Luffed48.3048.30Headsail FlyingSymmetricAsymmetric100.79100.79 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail15.12Storm Jib13.89Heavy Weather Jib37.49
SAIL LIMITS
Headsails6Spinnakers5
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.
Double HandedClub Certificate2025
MerimörköFIN 9631
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
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 VMG1309.1957.1798.6730.8702.3688.6681.0678.0697.7
52°834.9624.5534.0496.4481.9474.8470.6466.8469.2
60°782.9592.1512.6479.9465.9459.5455.5451.0451.2
75°747.6571.0499.2467.8451.7441.9436.1427.8424.0
90°766.2580.5502.7467.2447.5433.3422.2407.4398.2
110°820.0598.8499.5457.3433.6415.1402.5385.1376.1
120°847.5615.2509.6462.8436.9415.6396.8367.3348.6
135°962.8687.6556.4488.4454.1430.4409.0368.9324.0
150°1173.1820.8648.0548.9490.5458.6437.1399.8363.3
Run VMG1354.6947.8748.3633.8565.2523.4492.2448.4413.8
Selected Courses
Windward / Leeward1331.1952.5773.4682.3633.8606.0586.6563.2555.7
All purpose1002.9730.2604.9544.5513.3494.2480.6462.1452.4
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward659.60.9097
All purpose529.91.1323
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low667.50.8989
Triple Number Coastal/Long Distance Medium526.51.1395
Triple Number Coastal/Long Distance High477.11.2576
Triple Number Windward/Leeward Low862.90.6953
Triple Number Windward/Leeward Medium654.70.9165
Triple Number Windward/Leeward High582.71.0297
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance577.61.0387
Triple Number Coastal/Long Distance Low667.50.8989
Triple Number Coastal/Long Distance Medium526.51.1395
Triple Number Coastal/Long Distance High477.11.2576
Triple Number Windward/Leeward Low862.90.6953
Triple Number Windward/Leeward Medium654.70.9165
Triple Number Windward/Leeward High582.71.0297
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1416.8952.0727.4614.3549.2513.7484.8438.7427.1
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8021
Downwind "popa"0.9635
70% up, 30% down "Ilhabela"0.8445
30% up, 70% down "Ilhabela-inverso"0.9086
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low667.50.8989
Triple Number Coastal/Long Distance Medium526.51.1395
Triple Number Coastal/Long Distance High477.11.2576
Triple Number Windward/Leeward Low862.90.6953
Triple Number Windward/Leeward Medium654.70.9165
Triple Number Windward/Leeward High582.71.0297
Predominantly Upwind573.21.0468
Predominantly Downwind537.51.1163
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low667.50.8989
Triple Number AP Medium526.61.1394
Triple Number AP High477.11.2576
Triple Number Windward/Leeward Low900.70.6661
Triple Number Windward/Leeward Medium654.70.9165
Triple Number Windward/Leeward High582.71.0297
Single Number Predominant Upwind594.91.0086
Single Number Predominant Reaching522.91.1474
Single Number Predominant Downwind560.61.0702
Predominant Upwind - Low795.00.7548
Predominant Upwind - Low/Med619.70.9683
Predominant Upwind - Medium557.51.0763
Predominant Upwind - Med/High527.41.1376
Predominant Upwind - High515.01.1650
Predominant Downwind Low809.50.7412
Predominant Downwind Low/Med604.40.9928
Predominant Downwind Medium519.81.1543
Predominant Downwind Med/High468.21.2815
Predominant Downwind High436.41.3749
Predominant Reaching Low711.70.8431
Predominant Reaching Low/Med552.11.0869
Predominant Reaching Medium491.01.2220
Predominant Reaching Med/High455.01.3187
Predominant Reaching High433.01.3857
SA/DSPL Upwind23.67SA/DSPL Downwind36.18
Scoring OptionTODTOT
5-Band Windward/Leeward Low1002.60.5985
5-Band Windward/Leeward Low/Med747.10.8032
5-Band Windward/Leeward Medium644.90.9304
5-Band Windward/Leeward Med/High589.91.0171
5-Band Windward/Leeward High566.01.0601
Windward/Leeward 60-40 Low1003.10.5981
Windward/Leeward 60-40 Low/Med754.40.7953
Windward/Leeward 60-40 Medium658.10.9117
Windward/Leeward 60-40 Med/High608.60.9858
Windward/Leeward 60-40 High589.21.0184
5-Band AP Low735.00.8164
5-Band AP Low/Med588.51.0195
5-Band AP Medium520.11.1535
5-Band AP Med/High482.61.2434
5-Band AP High463.61.2941
5-Band SF Bay Tour - Low864.60.6940
5-Band SF Bay Tour - Low/Med713.20.8413
5-Band SF Bay Tour - Medium621.20.9659
5-Band SF Bay Tour - Med/High572.71.0476
5-Band SF Bay Tour - High551.01.0890
Chicago-Mac Upwind0.9810
Chicago-Mac All Purpose1.0104
Chicago-Mac Downwind1.0330
Bayview-Mac Cove Island0.7486
Bayview-Mac Shore0.7547
Harvest Moon Regatta457.71.3109
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance577.61.0387
Triple Number Coastal/Long Distance Low667.50.8989
Triple Number Coastal/Long Distance Medium526.51.1395
Triple Number Coastal/Long Distance High477.11.2576
Triple Number Windward/Leeward Low862.90.6953
Triple Number Windward/Leeward Medium654.70.9165
Triple Number Windward/Leeward High582.71.0297
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1416.8952.0727.4614.3549.2513.7484.8438.7427.1
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance577.61.0387
Triple Number Coastal/Long Distance Low667.50.8989
Triple Number Coastal/Long Distance Medium526.51.1395
Triple Number Coastal/Long Distance High477.11.2576
Triple Number Windward/Leeward Low862.90.6953
Triple Number Windward/Leeward Medium654.70.9165
Triple Number Windward/Leeward High582.71.0297
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1416.8952.0727.4614.3549.2513.7484.8438.7427.1
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance577.6
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1416.8952.0727.4614.3549.2513.7484.8438.7427.1
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low667.50.8989
Triple Number Coastal/Long Distance Medium526.51.1395
Triple Number Coastal/Long Distance High477.11.2576
Triple Number Windward/Leeward Low862.90.6953
Triple Number Windward/Leeward Medium654.70.9165
Triple Number Windward/Leeward High582.71.0297
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating577.61.0387
FinRating, kevyt tuuli983.01.0173
FinRating, kova tuuli466.31.0723
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low667.50.8989
Triple Number Coastal/Long Distance Medium526.51.1395
Triple Number Coastal/Long Distance High477.11.2576
Triple Number Windward/Leeward Low862.90.6953
Triple Number Windward/Leeward Medium654.70.9165
Triple Number Windward/Leeward High582.71.0297
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance1.0387
Triple Number Coastal/Long Distance Low0.8989
Triple Number Coastal/Long Distance Medium1.1395
Triple Number Coastal/Long Distance High1.2576
Triple Number Windward/Leeward Low0.6953
Triple Number Windward/Leeward Medium0.9165
Triple Number Windward/Leeward High1.0297
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1416.8952.0727.4614.3549.2513.7484.8438.7427.1
For information
General Purpose Handicap (GPH)591.7
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance577.61.0387
Triple Number Coastal/Long Distance Low667.50.8989
Triple Number Coastal/Long Distance Medium526.51.1395
Triple Number Coastal/Long Distance High477.11.2576
Triple Number Windward/Leeward Low862.90.6953
Triple Number Windward/Leeward Medium654.70.9165
Triple Number Windward/Leeward High582.71.0297
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1416.8952.0727.4614.3549.2513.7484.8438.7427.1
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low667.50.8989
Triple Number Coastal/Long Distance Medium526.51.1395
Triple Number Coastal/Long Distance High477.11.2576
Triple Number Windward/Leeward Low862.90.6953
Triple Number Windward/Leeward Medium654.70.9165
Triple Number Windward/Leeward High582.71.0297
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance577.61.0387
Triple Number Coastal/Long Distance Low667.50.8989
Triple Number Coastal/Long Distance Medium526.51.1395
Triple Number Coastal/Long Distance High477.11.2576
Triple Number Windward/Leeward Low862.90.6953
Triple Number Windward/Leeward Medium654.70.9165
Triple Number Windward/Leeward High582.71.0297
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1416.8952.0727.4614.3549.2513.7484.8438.7427.1
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance577.61.0387
Triple Number Coastal/Long Distance Low667.50.8989
Triple Number Coastal/Long Distance Medium526.51.1395
Triple Number Coastal/Long Distance High477.11.2576
Triple Number Windward/Leeward Low862.90.6953
Triple Number Windward/Leeward Medium654.70.9165
Triple Number Windward/Leeward High582.71.0297
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1416.8952.0727.4614.3549.2513.7484.8438.7427.1
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low667.5
Triple Number Coastal/Long Distance Medium526.5
Triple Number Coastal/Long Distance High477.1
Triple Number Windward/Leeward Low862.9
Triple Number Windward/Leeward Medium654.7
Triple Number Windward/Leeward High582.7
Predominantly Upwind573.2
Predominantly Downwind537.5
Predominantly Reaching513.2
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance577.61.0387
Triple Number Coastal/Long Distance Low667.50.8989
Triple Number Coastal/Long Distance Medium526.51.1395
Triple Number Coastal/Long Distance High477.11.2576
Triple Number Windward/Leeward Low862.90.6953
Triple Number Windward/Leeward Medium654.70.9165
Triple Number Windward/Leeward High582.71.0297
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1416.8952.0727.4614.3549.2513.7484.8438.7427.1
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8989
Triple Number Coastal/Long Distance Medium1.1395
Triple Number Coastal/Long Distance High1.2576
Triple Number Windward/Leeward Low0.6953
Triple Number Windward/Leeward Medium0.9165
Triple Number Windward/Leeward High1.0297
Coastal/Long Distance1.0387
Predominantly Upwind1.0468
Predominantly Downwind1.1163
For information
General Purpose Handicap (GPH)591.7
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)1.1323
Distanseseilas Trippeltall svak vind0.8989
Distanseseilas Trippeltall mellomvind1.1395
Distanseseilas Trippeltall sterk vind1.2576
Pølsebane Trippeltall svak vind0.6953
Pølsebane Trippeltall mellomvind0.9165
Pølsebane Trippeltall sterk vind1.0297
Motvind Singeltall1.0468
Medvind Singeltall1.1163
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low667.50.8989
Triple Number Coastal/Long Distance Medium526.51.1395
Triple Number Coastal/Long Distance High477.11.2576
Triple Number Windward/Leeward Low862.90.6953
Triple Number Windward/Leeward Medium654.70.9165
Triple Number Windward/Leeward High582.71.0297
Coastal/Long Distance577.61.0387
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind573.21.0468
Predominantly Downwind537.51.1163
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore558.01.0753
Cape Doctor Coastal455.31.3178
Triple Number Coastal/Long Distance Low667.50.8989
Triple Number Coastal/Long Distance Medium526.51.1395
Triple Number Coastal/Long Distance High477.11.2576
Triple Number Windward/Leeward Low862.90.6953
Triple Number Windward/Leeward Medium654.70.9165
Triple Number Windward/Leeward High582.71.0297
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8989
Triple Number Coastal/Long Distance Medium1.1395
Triple Number Coastal/Long Distance High1.2576
Triple Number Windward/Leeward Low0.6953
Triple Number Windward/Leeward Medium0.9165
Triple Number Windward/Leeward High1.0297
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8989
Triple Number Coastal/Long Distance Medium1.1395
Triple Number Coastal/Long Distance High1.2576
Triple Number Windward/Leeward Low0.6953
Triple Number Windward/Leeward Medium0.9165
Triple Number Windward/Leeward High1.0297
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance577.61.0387
Triple Number Coastal/Long Distance Low667.50.8989
Triple Number Coastal/Long Distance Medium526.51.1395
Triple Number Coastal/Long Distance High477.11.2576
Triple Number Windward/Leeward Low862.90.6953
Triple Number Windward/Leeward Medium654.70.9165
Triple Number Windward/Leeward High582.71.0297
Predominantly Upwind573.21.0468
Predominantly Downwind537.51.1163
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1416.8952.0727.4614.3549.2513.7484.8438.7427.1
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance577.61.0387
Triple Number Coastal/Long Distance Low667.50.8989
Triple Number Coastal/Long Distance Medium526.51.1395
Triple Number Coastal/Long Distance High477.11.2576
Triple Number Windward/Leeward Low862.90.6953
Triple Number Windward/Leeward Medium654.70.9165
Triple Number Windward/Leeward High582.71.0297
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1416.8952.0727.4614.3549.2513.7484.8438.7427.1
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low667.50.8989
Triple Number AP Medium526.61.1394
Triple Number AP High477.11.2576
Triple Number Windward/Leeward Low900.70.6661
Triple Number Windward/Leeward Medium654.70.9165
Triple Number Windward/Leeward High582.71.0297
Single Number Predominant Upwind594.91.0086
Single Number Predominant Reaching522.91.1474
Single Number Predominant Downwind560.61.0702
Predominant Upwind - Low795.00.7548
Predominant Upwind - Low/Med619.70.9683
Predominant Upwind - Medium557.51.0763
Predominant Upwind - Med/High527.41.1376
Predominant Upwind - High515.01.1650
Predominant Downwind Low809.50.7412
Predominant Downwind Low/Med604.40.9928
Predominant Downwind Medium519.81.1543
Predominant Downwind Med/High468.21.2815
Predominant Downwind High436.41.3749
Predominant Reaching Low711.70.8431
Predominant Reaching Low/Med552.11.0869
Predominant Reaching Medium491.01.2220
Predominant Reaching Med/High455.01.3187
Predominant Reaching High433.01.3857
SA/DSPL Upwind23.67SA/DSPL Downwind36.18
Scoring OptionTODTOT
5-Band Windward/Leeward Low1002.60.5985
5-Band Windward/Leeward Low/Med747.10.8032
5-Band Windward/Leeward Medium644.90.9304
5-Band Windward/Leeward Med/High589.91.0171
5-Band Windward/Leeward High566.01.0601
Windward/Leeward 60-40 Low1003.10.5981
Windward/Leeward 60-40 Low/Med754.40.7953
Windward/Leeward 60-40 Medium658.10.9117
Windward/Leeward 60-40 Med/High608.60.9858
Windward/Leeward 60-40 High589.21.0184
5-Band AP Low735.00.8164
5-Band AP Low/Med588.51.0195
5-Band AP Medium520.11.1535
5-Band AP Med/High482.61.2434
5-Band AP High463.61.2941
5-Band SF Bay Tour - Low864.60.6940
5-Band SF Bay Tour - Low/Med713.20.8413
5-Band SF Bay Tour - Medium621.20.9659
5-Band SF Bay Tour - Med/High572.71.0476
5-Band SF Bay Tour - High551.01.0890
Chicago-Mac Upwind0.9810
Chicago-Mac All Purpose1.0104
Chicago-Mac Downwind1.0330
Bayview-Mac Cove Island0.7486
Bayview-Mac Shore0.7547
Harvest Moon Regatta457.71.3109
Double HandedClub Certificate2025
MerimörköFIN 9631
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassFinngulf 41Measurement11/05/2022HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
LOA12.495Max. Beam3.844Draft1.829Displacement8,500Wetted area33.07IMS L11.234LSM011.201Acc. length12.493Sink (kg/mm) 24.86
VCGD0.006VCGM0.001RM Rated (kg·m) 215.5Limit of positive stability(°) N/AStability IndexN/ADefault crew weight170Declared crew weight170
PROPELLER
Propeller TypeFolding 3 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.454PBWPIPA0.0008
EDLST1ST2
ST3ST4ST5
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays1CheckstaysSpreaders2Rotating mastNo
P16.000IG16.664ISP16.674MDT10.140MDL10.205MDT2MDL2TLTaperMWGO
E5.400J4.350BAS1.560FSDSFJSPLWPLTPS5.180BDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date11/05/2022
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Double HandedClub Certificate2025
MerimörköFIN 9631
Avomeripurjehtijat ry
c/o Mainoskauppa Oy
Melkonkatu 16 B
00210 HELSINKI
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment10.181.152.023.454.4650.98
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment10.070.721.442.974.616.3115.79NoNo 48.30
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment117.0715.6816.387.297.7794%100.79
CRUISER/RACER REQUIREMENTS*
Accommodation length12.5 mTable area0.55 m²Headroom1.83 mMinimum number of berths5Personal gear stowage0.20 m³Fresh water capacity162 lMinimum number of seats in cockpit5Food stowage0.30 m³Fuel capacity100 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.