Club Certificate2025
Brisen IINOR 5052
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 Angles44.8°44.8°43.0°40.8°39.5°39.0°38.3°38.4°39.5°
Beat VMG2.353.233.924.394.624.724.794.834.76
52°3.725.025.936.396.606.696.756.796.79
60°4.065.366.196.586.786.896.967.027.01
75°4.345.646.396.756.987.157.277.407.45
90°4.265.596.406.807.077.307.497.797.97
110°3.815.236.266.787.137.427.688.208.77
120°3.645.036.096.697.067.397.708.389.21
135°3.204.485.566.346.817.167.508.269.45
150°2.613.794.875.786.446.857.187.848.73
Run VMG2.263.284.225.035.736.286.707.337.95
Gybe Angles146.2°146.2°150.7°154.3°161.5°168.4°177.4°178.6°177.7°
APH ToD:601.1CDL: 7.910APH ToT: 0.9982CertNo:21237
BOAT
ClassALBIN NOVADesignerPeterNorlinBuilderAlbin Marin ABAge date01/1984Series date01/1981Offset fileALBINNOVA.offData file21237
HULL
Length Overall9.896 mMaximum Beam3.156 mDraft1.685 mDisplacement3,962 kgDLR7.2717IMS DivisionCruiser/RacerDynamic Allowance0.290%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.380m
CREW
Maximum weight516 kg(default)Minimum weight386 kg ✱ when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail28.9329.29Headsail Luffed20.8820.88Headsail Flying37.8037.80Symmetric55.7256.51Asymmetric
STORM SAIL AREAS (m²)
Trysail9.11Storm Jib6.40Heavy Weather Jib17.27
SAIL LIMITS
Headsails5
✱ One set on the forestay
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
Brisen IINOR 5052
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 VMG1534.11113.8917.8819.3778.7762.8752.0745.8757.0
52°968.6717.2607.4563.5545.7537.9533.5530.0530.2
60°887.2671.2581.9547.3530.9522.3517.2512.8513.3
75°829.2637.9563.2533.2515.6503.4495.0486.4483.1
90°844.7643.8562.5529.1508.9493.4481.0462.0451.9
110°943.9688.5575.1530.8505.1485.2468.9438.8410.5
120°987.8715.3591.3537.9509.6487.4467.8429.8390.9
135°1126.5802.7648.0567.6528.8502.9480.0435.7380.8
150°1379.9950.0739.1623.2559.1525.5501.3459.0412.5
Run VMG1594.21096.9852.9715.9628.6573.0537.3491.3452.6
Selected Courses
Windward / Leeward1562.31105.4885.4767.6703.6667.9644.6618.5604.8
All purpose1162.0840.9691.8618.6580.3558.5542.9520.5503.2
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward737.40.8137
All purpose601.10.9982
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low766.40.7829
Triple Number Coastal/Long Distance Medium596.91.0052
Triple Number Coastal/Long Distance High538.41.1144
Triple Number Windward/Leeward Low995.40.6028
Triple Number Windward/Leeward Medium731.20.8206
Triple Number Windward/Leeward High640.70.9365
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance654.50.9167
Triple Number Coastal/Long Distance Low766.40.7829
Triple Number Coastal/Long Distance Medium596.91.0052
Triple Number Coastal/Long Distance High538.41.1144
Triple Number Windward/Leeward Low995.40.6028
Triple Number Windward/Leeward Medium731.20.8206
Triple Number Windward/Leeward High640.70.9365
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1667.51104.5832.0694.1618.7579.5548.5497.7478.6
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7131
Downwind "popa"0.8579
70% up, 30% down "Ilhabela"0.7511
30% up, 70% down "Ilhabela-inverso"0.8086
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low766.40.7829
Triple Number Coastal/Long Distance Medium596.91.0052
Triple Number Coastal/Long Distance High538.41.1144
Triple Number Windward/Leeward Low995.40.6028
Triple Number Windward/Leeward Medium731.20.8206
Triple Number Windward/Leeward High640.70.9365
Predominantly Upwind648.10.9258
Predominantly Downwind611.10.9818
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low766.40.7829
Triple Number AP Medium597.01.0051
Triple Number AP High538.41.1144
Triple Number Windward/Leeward Low1040.50.5767
Triple Number Windward/Leeward Medium731.20.8206
Triple Number Windward/Leeward High640.70.9365
Single Number Predominant Upwind673.90.8904
Single Number Predominant Reaching596.01.0066
Single Number Predominant Downwind638.90.9392
Predominant Upwind - Low917.10.6543
Predominant Upwind - Low/Med705.40.8506
Predominant Upwind - Medium628.30.9549
Predominant Upwind - Med/High592.11.0134
Predominant Upwind - High576.71.0404
Predominant Downwind Low936.00.6410
Predominant Downwind Low/Med691.20.8680
Predominant Downwind Medium589.61.0176
Predominant Downwind Med/High528.71.1348
Predominant Downwind High492.91.2172
Predominant Reaching Low814.50.7367
Predominant Reaching Low/Med629.50.9532
Predominant Reaching Medium559.01.0734
Predominant Reaching Med/High517.91.1586
Predominant Reaching High492.51.2184
SA/DSPL Upwind19.81SA/DSPL Downwind33.66
Scoring OptionTODTOT
5-Band Windward/Leeward Low1165.10.5150
5-Band Windward/Leeward Low/Med849.40.7064
5-Band Windward/Leeward Medium718.50.8351
5-Band Windward/Leeward Med/High649.10.9243
5-Band Windward/Leeward High620.70.9667
Windward/Leeward 60-40 Low1166.00.5146
Windward/Leeward 60-40 Low/Med857.80.6995
Windward/Leeward 60-40 Medium733.20.8183
Windward/Leeward 60-40 Med/High670.30.8951
Windward/Leeward 60-40 High646.30.9284
5-Band AP Low845.30.7098
5-Band AP Low/Med671.50.8935
5-Band AP Medium589.21.0184
5-Band AP Med/High544.91.1011
5-Band AP High521.41.1507
5-Band SF Bay Tour - Low1001.60.5990
5-Band SF Bay Tour - Low/Med812.80.7382
5-Band SF Bay Tour - Medium696.20.8619
5-Band SF Bay Tour - Med/High636.30.9429
5-Band SF Bay Tour - High609.70.9840
Chicago-Mac Upwind0.8650
Chicago-Mac All Purpose0.8893
Chicago-Mac Downwind0.9060
Bayview-Mac Cove Island0.6506
Bayview-Mac Shore0.6566
Harvest Moon Regatta523.71.1456
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance654.50.9167
Triple Number Coastal/Long Distance Low766.40.7829
Triple Number Coastal/Long Distance Medium596.91.0052
Triple Number Coastal/Long Distance High538.41.1144
Triple Number Windward/Leeward Low995.40.6028
Triple Number Windward/Leeward Medium731.20.8206
Triple Number Windward/Leeward High640.70.9365
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1667.51104.5832.0694.1618.7579.5548.5497.7478.6
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance654.50.9167
Triple Number Coastal/Long Distance Low766.40.7829
Triple Number Coastal/Long Distance Medium596.91.0052
Triple Number Coastal/Long Distance High538.41.1144
Triple Number Windward/Leeward Low995.40.6028
Triple Number Windward/Leeward Medium731.20.8206
Triple Number Windward/Leeward High640.70.9365
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1667.51104.5832.0694.1618.7579.5548.5497.7478.6
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance654.5
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1667.51104.5832.0694.1618.7579.5548.5497.7478.6
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low766.40.7829
Triple Number Coastal/Long Distance Medium596.91.0052
Triple Number Coastal/Long Distance High538.41.1144
Triple Number Windward/Leeward Low995.40.6028
Triple Number Windward/Leeward Medium731.20.8206
Triple Number Windward/Leeward High640.70.9365
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating654.50.9167
FinRating, kevyt tuuli1141.60.8759
FinRating, kova tuuli524.20.9539
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low766.40.7829
Triple Number Coastal/Long Distance Medium596.91.0052
Triple Number Coastal/Long Distance High538.41.1144
Triple Number Windward/Leeward Low995.40.6028
Triple Number Windward/Leeward Medium731.20.8206
Triple Number Windward/Leeward High640.70.9365
Custom scoring options for Germany
Scoring OptionTime On
Time
Coastal/Long Distance0.9167
Triple Number Coastal/Long Distance Low0.7829
Triple Number Coastal/Long Distance Medium1.0052
Triple Number Coastal/Long Distance High1.1144
Triple Number Windward/Leeward Low0.6028
Triple Number Windward/Leeward Medium0.8206
Triple Number Windward/Leeward High0.9365
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1667.51104.5832.0694.1618.7579.5548.5497.7478.6
For information
General Purpose Handicap (GPH)673.3
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance654.50.9167
Triple Number Coastal/Long Distance Low766.40.7829
Triple Number Coastal/Long Distance Medium596.91.0052
Triple Number Coastal/Long Distance High538.41.1144
Triple Number Windward/Leeward Low995.40.6028
Triple Number Windward/Leeward Medium731.20.8206
Triple Number Windward/Leeward High640.70.9365
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1667.51104.5832.0694.1618.7579.5548.5497.7478.6
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low766.40.7829
Triple Number Coastal/Long Distance Medium596.91.0052
Triple Number Coastal/Long Distance High538.41.1144
Triple Number Windward/Leeward Low995.40.6028
Triple Number Windward/Leeward Medium731.20.8206
Triple Number Windward/Leeward High640.70.9365
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance654.50.9167
Triple Number Coastal/Long Distance Low766.40.7829
Triple Number Coastal/Long Distance Medium596.91.0052
Triple Number Coastal/Long Distance High538.41.1144
Triple Number Windward/Leeward Low995.40.6028
Triple Number Windward/Leeward Medium731.20.8206
Triple Number Windward/Leeward High640.70.9365
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1667.51104.5832.0694.1618.7579.5548.5497.7478.6
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance654.50.9167
Triple Number Coastal/Long Distance Low766.40.7829
Triple Number Coastal/Long Distance Medium596.91.0052
Triple Number Coastal/Long Distance High538.41.1144
Triple Number Windward/Leeward Low995.40.6028
Triple Number Windward/Leeward Medium731.20.8206
Triple Number Windward/Leeward High640.70.9365
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1667.51104.5832.0694.1618.7579.5548.5497.7478.6
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low766.4
Triple Number Coastal/Long Distance Medium596.9
Triple Number Coastal/Long Distance High538.4
Triple Number Windward/Leeward Low995.4
Triple Number Windward/Leeward Medium731.2
Triple Number Windward/Leeward High640.7
Predominantly Upwind648.1
Predominantly Downwind611.1
Predominantly Reaching584.8
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance654.50.9167
Triple Number Coastal/Long Distance Low766.40.7829
Triple Number Coastal/Long Distance Medium596.91.0052
Triple Number Coastal/Long Distance High538.41.1144
Triple Number Windward/Leeward Low995.40.6028
Triple Number Windward/Leeward Medium731.20.8206
Triple Number Windward/Leeward High640.70.9365
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1667.51104.5832.0694.1618.7579.5548.5497.7478.6
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7829
Triple Number Coastal/Long Distance Medium1.0052
Triple Number Coastal/Long Distance High1.1144
Triple Number Windward/Leeward Low0.6028
Triple Number Windward/Leeward Medium0.8206
Triple Number Windward/Leeward High0.9365
Coastal/Long Distance0.9167
Predominantly Upwind0.9258
Predominantly Downwind0.9818
For information
General Purpose Handicap (GPH)673.3
Custom scoring options for Norway
Scoring OptionTime On
Time
Distanseseilas Singeltall  (APH)0.9982
Distanseseilas Trippeltall svak vind0.7829
Distanseseilas Trippeltall mellomvind1.0052
Distanseseilas Trippeltall sterk vind1.1144
Pølsebane Trippeltall svak vind0.6028
Pølsebane Trippeltall mellomvind0.8206
Pølsebane Trippeltall sterk vind0.9365
Motvind Singeltall0.9258
Medvind Singeltall0.9818
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low766.40.7829
Triple Number Coastal/Long Distance Medium596.91.0052
Triple Number Coastal/Long Distance High538.41.1144
Triple Number Windward/Leeward Low995.40.6028
Triple Number Windward/Leeward Medium731.20.8206
Triple Number Windward/Leeward High640.70.9365
Coastal/Long Distance654.50.9167
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind648.10.9258
Predominantly Downwind611.10.9818
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore608.90.9853
Cape Doctor Coastal508.41.1801
Triple Number Coastal/Long Distance Low766.40.7829
Triple Number Coastal/Long Distance Medium596.91.0052
Triple Number Coastal/Long Distance High538.41.1144
Triple Number Windward/Leeward Low995.40.6028
Triple Number Windward/Leeward Medium731.20.8206
Triple Number Windward/Leeward High640.70.9365
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7829
Triple Number Coastal/Long Distance Medium1.0052
Triple Number Coastal/Long Distance High1.1144
Triple Number Windward/Leeward Low0.6028
Triple Number Windward/Leeward Medium0.8206
Triple Number Windward/Leeward High0.9365
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7829
Triple Number Coastal/Long Distance Medium1.0052
Triple Number Coastal/Long Distance High1.1144
Triple Number Windward/Leeward Low0.6028
Triple Number Windward/Leeward Medium0.8206
Triple Number Windward/Leeward High0.9365
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance654.50.9167
Triple Number Coastal/Long Distance Low766.40.7829
Triple Number Coastal/Long Distance Medium596.91.0052
Triple Number Coastal/Long Distance High538.41.1144
Triple Number Windward/Leeward Low995.40.6028
Triple Number Windward/Leeward Medium731.20.8206
Triple Number Windward/Leeward High640.70.9365
Predominantly Upwind648.10.9258
Predominantly Downwind611.10.9818
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1667.51104.5832.0694.1618.7579.5548.5497.7478.6
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance654.50.9167
Triple Number Coastal/Long Distance Low766.40.7829
Triple Number Coastal/Long Distance Medium596.91.0052
Triple Number Coastal/Long Distance High538.41.1144
Triple Number Windward/Leeward Low995.40.6028
Triple Number Windward/Leeward Medium731.20.8206
Triple Number Windward/Leeward High640.70.9365
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1667.51104.5832.0694.1618.7579.5548.5497.7478.6
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low766.40.7829
Triple Number AP Medium597.01.0051
Triple Number AP High538.41.1144
Triple Number Windward/Leeward Low1040.50.5767
Triple Number Windward/Leeward Medium731.20.8206
Triple Number Windward/Leeward High640.70.9365
Single Number Predominant Upwind673.90.8904
Single Number Predominant Reaching596.01.0066
Single Number Predominant Downwind638.90.9392
Predominant Upwind - Low917.10.6543
Predominant Upwind - Low/Med705.40.8506
Predominant Upwind - Medium628.30.9549
Predominant Upwind - Med/High592.11.0134
Predominant Upwind - High576.71.0404
Predominant Downwind Low936.00.6410
Predominant Downwind Low/Med691.20.8680
Predominant Downwind Medium589.61.0176
Predominant Downwind Med/High528.71.1348
Predominant Downwind High492.91.2172
Predominant Reaching Low814.50.7367
Predominant Reaching Low/Med629.50.9532
Predominant Reaching Medium559.01.0734
Predominant Reaching Med/High517.91.1586
Predominant Reaching High492.51.2184
SA/DSPL Upwind19.81SA/DSPL Downwind33.66
Scoring OptionTODTOT
5-Band Windward/Leeward Low1165.10.5150
5-Band Windward/Leeward Low/Med849.40.7064
5-Band Windward/Leeward Medium718.50.8351
5-Band Windward/Leeward Med/High649.10.9243
5-Band Windward/Leeward High620.70.9667
Windward/Leeward 60-40 Low1166.00.5146
Windward/Leeward 60-40 Low/Med857.80.6995
Windward/Leeward 60-40 Medium733.20.8183
Windward/Leeward 60-40 Med/High670.30.8951
Windward/Leeward 60-40 High646.30.9284
5-Band AP Low845.30.7098
5-Band AP Low/Med671.50.8935
5-Band AP Medium589.21.0184
5-Band AP Med/High544.91.1011
5-Band AP High521.41.1507
5-Band SF Bay Tour - Low1001.60.5990
5-Band SF Bay Tour - Low/Med812.80.7382
5-Band SF Bay Tour - Medium696.20.8619
5-Band SF Bay Tour - Med/High636.30.9429
5-Band SF Bay Tour - High609.70.9840
Chicago-Mac Upwind0.8650
Chicago-Mac All Purpose0.8893
Chicago-Mac Downwind0.9060
Bayview-Mac Cove Island0.6506
Bayview-Mac Shore0.6566
Harvest Moon Regatta523.71.1456
Club Certificate2025
Brisen IINOR 5052
Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassALBIN NOVAMeasurementHINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
LOA9.896Max. Beam3.156Draft1.685Displacement3,962Wetted area20.27IMS L8.464LSM08.166Acc. length9.896Sink (kg/mm) 14.00
VCGD-0.180VCGM-0.130RM Rated (kg·m) 74.8Limit of positive stability(°) N/AStability IndexN/ADefault crew weight516Declared crew weightN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.380PBWPIPA0.0033
EDL1.350ST10.035ST20.140
ST30.140ST40.140ST50.350
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerYesMainsail furlerArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunning backstays0CheckstaysSpreaders1Rotating mastNo
P12.100IG11.310ISP11.320MDT10.120MDL10.160MDT20.110MDL20.090TL2.100MW0.160GO0.160
E4.300J3.700BAS1.550FSDFoilSFJ0.000SPL4.162WPLTPS4.730BD0.000MWT119.00MCG4.570
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.180Flotation Date01/01/2015
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
Club Certificate2025
Brisen IINOR 5052
Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment330-2017011215170.150.751.402.503.4528.9312/01/2017I bruk
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment394-2025052611500.050.941.253.645.336.7810.99NoYes037.8026/05/2025330-2017031510280.080.601.112.053.004.0110.20NoNo 20.8812/01/2017I bruk
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment335-20140515111310.7510.7510.756.305.9055.7215/05/2014
CRUISER/RACER REQUIREMENTS*
Accommodation length9.9 mTable area0.44 m²Headroom1.70 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity78 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity48 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.