Club
Certificate
2024

Boat

Hila 1

ISR 375

IYC
IYC , P.O.Box 3299
Ramat Gan
Israel
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat Angles45.3°43.6°42.1°40.9°40.0°39.7°39.6°40.4°
Beat VMG2.943.684.264.725.025.155.245.18
52°4.575.626.386.927.267.437.557.55
60°4.875.916.687.167.477.657.817.84
75°5.386.487.197.577.787.908.228.35
90°5.576.707.407.818.118.358.628.81
110°5.396.617.407.878.278.629.169.72
120°5.206.417.277.798.228.639.4310.06
135°4.655.866.827.477.918.339.1710.20
150°3.935.066.006.757.257.628.248.88
Run VMG3.404.385.205.856.286.747.628.24
Gybe Angles144.1°146.5°146.9°147.4°148.6°171.4°176.3°176.3°
APH ToD:576.2CDL: 9.142APH ToT: 1.0414CertNo:24375
BOAT
ClassHanse 375DesignerJudelBuilderHanse YachtsAge date01/2011Series date01/2009Offset fileHANSE375.OFFData fileISR375
HULL
Length Overall11.270 mMaximum Beam3.760 mDraft2.014 mDisplacement7,431 kgDLR6.3725IMS DivisionCruiser/RacerDynamic Allowance0.300%Age Allowance0.487%
PROPELLER
InstallationStrutTypeSolid 2 bladesDiameter0.436m
CREW
Maximum weight740 kg(default)Minimum weight610 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail40.8841.44Headsail Luffed28.3728.37Headsail Flying66.6566.65SymmetricAsymmetric102.55102.55 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail12.79Storm Jib11.45Heavy Weather Jib30.91
SAIL LIMITS
Headsails5  Spinnakers4 * Asymmetric SHALL NOT be tacked on the pole
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
Certificate
2024

Boat

Hila 1

ISR 375

IYC
IYC , P.O.Box 3299
Ramat Gan
Israel
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat VMG1226.0977.9845.6763.3717.7698.8687.2695.1
52°787.1641.1564.7520.3496.1484.5476.8476.5
60°738.5608.9538.8503.1481.9470.3461.2459.3
75°668.7555.4501.0475.4462.7455.6438.1431.2
90°646.2537.4486.7461.2443.7430.9417.7408.5
110°667.9544.5486.3457.2435.3417.5392.9370.4
120°692.1561.4495.1462.0438.1417.2381.8357.7
135°774.3614.7528.0482.0455.0432.3392.5353.0
150°916.3711.6599.7533.4496.4472.3436.9405.3
Run VMG1058.0821.6692.5615.9573.2534.5472.5437.0
Selected Courses
Windward / Leeward1142.0899.8769.1689.6645.4616.6579.8566.1
All purpose864.2692.2602.0550.4520.9501.6477.5463.7
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward727.50.8247
All purpose576.21.0414
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low778.20.7710
Triple Number Coastal/Long Distance Medium572.01.0489
Triple Number Coastal/Long Distance High497.31.2064
Triple Number Windward/Leeward Low1020.90.5877
Triple Number Windward/Leeward Medium722.50.8304
Triple Number Windward/Leeward High610.10.9835
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance632.90.9481
Triple Number Coastal/Long Distance Low778.20.7710
Triple Number Coastal/Long Distance Medium572.01.0489
Triple Number Coastal/Long Distance High497.31.2064
Triple Number Windward/Leeward Low1020.90.5877
Triple Number Windward/Leeward Medium722.50.8304
Triple Number Windward/Leeward High610.10.9835
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1133.6840.8686.3592.3542.0506.2454.0439.7
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7099
Downwind "popa"0.8808
70% up, 30% down "Ilhabela"0.7538
30% up, 70% down "Ilhabela-inverso"0.8215
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low778.20.7710
Triple Number Coastal/Long Distance Medium572.01.0489
Triple Number Coastal/Long Distance High497.31.2064
Triple Number Windward/Leeward Low1020.90.5877
Triple Number Windward/Leeward Medium722.50.8304
Triple Number Windward/Leeward High610.10.9835
Predominantly Upwind631.00.9509
Predominantly Downwind584.91.0258
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low778.20.7710
Triple Number AP Medium572.11.0487
Triple Number AP High497.41.2064
Triple Number Windward/Leeward Low1020.90.5877
Triple Number Windward/Leeward Medium722.50.8304
Triple Number Windward/Leeward High610.10.9835
Single Number Predominant Upwind630.50.9517
Single Number Predominant Reaching543.51.1040
Single Number Predominant Downwind584.91.0258
Predominant Upwind - Low885.40.6777
Predominant Upwind - Low/Med715.40.8387
Predominant Upwind - Medium605.30.9913
Predominant Upwind - Med/High547.41.0961
Predominant Upwind - High527.61.1371
Predominant Downwind Low842.10.7125
Predominant Downwind Low/Med671.20.8939
Predominant Downwind Medium560.41.0707
Predominant Downwind Med/High494.61.2132
Predominant Downwind High456.71.3137
Predominant Reaching Low752.50.7974
Predominant Reaching Low/Med612.40.9797
Predominant Reaching Medium523.61.1459
Predominant Reaching Med/High473.41.2674
Predominant Reaching High448.41.3381
SA/DSPL Upwind18.06SA/DSPL Downwind37.41
Scoring OptionTODTOT
5-Band Windward/Leeward Low1087.00.5520
5-Band Windward/Leeward Low/Med858.30.6990
5-Band Windward/Leeward Medium706.90.8487
5-Band Windward/Leeward Med/High621.40.9655
5-Band Windward/Leeward High583.81.0277
Windward/Leeward 60-40 Low1103.60.5437
Windward/Leeward 60-40 Low/Med873.90.6866
Windward/Leeward 60-40 Medium721.90.8311
Windward/Leeward 60-40 Med/High638.20.9401
Windward/Leeward 60-40 High605.20.9914
5-Band AP Low825.10.7272
5-Band AP Low/Med664.80.9025
5-Band AP Medium561.81.0680
5-Band AP Med/High504.91.1884
5-Band AP High479.31.2519
5-Band SF Bay Tour - Low1035.50.5794
5-Band SF Bay Tour - Low/Med820.90.7309
5-Band SF Bay Tour - Medium679.50.8830
5-Band SF Bay Tour - Med/High601.30.9978
5-Band SF Bay Tour - High568.91.0548
Chicago-Mac Upwind0.9279
Chicago-Mac All Purpose0.9642
Chicago-Mac Downwind1.0058
Bayview-Mac Cove Island0.8799
Bayview-Mac Shore0.8866
Harvest Moon Regatta489.51.2257
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance632.90.9481
Triple Number Coastal/Long Distance Low778.20.7710
Triple Number Coastal/Long Distance Medium572.01.0489
Triple Number Coastal/Long Distance High497.31.2064
Triple Number Windward/Leeward Low1020.90.5877
Triple Number Windward/Leeward Medium722.50.8304
Triple Number Windward/Leeward High610.10.9835
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1133.6840.8686.3592.3542.0506.2454.0439.7
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance632.90.9481
Triple Number Coastal/Long Distance Low778.20.7710
Triple Number Coastal/Long Distance Medium572.01.0489
Triple Number Coastal/Long Distance High497.31.2064
Triple Number Windward/Leeward Low1020.90.5877
Triple Number Windward/Leeward Medium722.50.8304
Triple Number Windward/Leeward High610.10.9835
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1133.6840.8686.3592.3542.0506.2454.0439.7
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance632.9
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1133.6840.8686.3592.3542.0506.2454.0439.7
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low778.20.7710
Triple Number Coastal/Long Distance Medium572.01.0489
Triple Number Coastal/Long Distance High497.31.2064
Triple Number Windward/Leeward Low1020.90.5877
Triple Number Windward/Leeward Medium722.50.8304
Triple Number Windward/Leeward High610.10.9835
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating (Coastal/Long Distance)632.90.9481
Triple Number Coastal/Long Distance Low778.20.7710
Triple Number Coastal/Long Distance Medium572.01.0489
Triple Number Coastal/Long Distance High497.31.2064
Triple Number Windward/Leeward Low1020.90.5877
Triple Number Windward/Leeward Medium722.50.8304
Triple Number Windward/Leeward High610.10.9835
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1133.6840.8686.3592.3542.0506.2454.0439.7
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low778.20.7710
Triple Number Coastal/Long Distance Medium572.01.0489
Triple Number Coastal/Long Distance High497.31.2064
Triple Number Windward/Leeward Low1020.90.5877
Triple Number Windward/Leeward Medium722.50.8304
Triple Number Windward/Leeward High610.10.9835
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7710
Triple Number Coastal/Long Distance Medium1.0489
Triple Number Coastal/Long Distance High1.2064
Triple Number Windward/Leeward Low0.5877
Triple Number Windward/Leeward Medium0.8304
Triple Number Windward/Leeward High0.9835
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1133.6840.8686.3592.3542.0506.2454.0439.7
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance632.90.9481
Triple Number Coastal/Long Distance Low778.20.7710
Triple Number Coastal/Long Distance Medium572.01.0489
Triple Number Coastal/Long Distance High497.31.2064
Triple Number Windward/Leeward Low1020.90.5877
Triple Number Windward/Leeward Medium722.50.8304
Triple Number Windward/Leeward High610.10.9835
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1133.6840.8686.3592.3542.0506.2454.0439.7
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low778.20.7710
Triple Number Coastal/Long Distance Medium572.01.0489
Triple Number Coastal/Long Distance High497.31.2064
Triple Number Windward/Leeward Low1020.90.5877
Triple Number Windward/Leeward Medium722.50.8304
Triple Number Windward/Leeward High610.10.9835
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance632.90.9481
Triple Number Coastal/Long Distance Low778.20.7710
Triple Number Coastal/Long Distance Medium572.01.0489
Triple Number Coastal/Long Distance High497.31.2064
Triple Number Windward/Leeward Low1020.90.5877
Triple Number Windward/Leeward Medium722.50.8304
Triple Number Windward/Leeward High610.10.9835
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1133.6840.8686.3592.3542.0506.2454.0439.7
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance632.90.9481
Triple Number Coastal/Long Distance Low778.20.7710
Triple Number Coastal/Long Distance Medium572.01.0489
Triple Number Coastal/Long Distance High497.31.2064
Triple Number Windward/Leeward Low1020.90.5877
Triple Number Windward/Leeward Medium722.50.8304
Triple Number Windward/Leeward High610.10.9835
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1133.6840.8686.3592.3542.0506.2454.0439.7
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low778.2
Triple Number Coastal/Long Distance Medium572.0
Triple Number Coastal/Long Distance High497.3
Triple Number Windward/Leeward Low1020.9
Triple Number Windward/Leeward Medium722.5
Triple Number Windward/Leeward High610.1
Predominantly Upwind631.0
Predominantly Downwind584.9
Predominantly Reaching554.2
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance632.90.9481
Triple Number Coastal/Long Distance Low778.20.7710
Triple Number Coastal/Long Distance Medium572.01.0489
Triple Number Coastal/Long Distance High497.31.2064
Triple Number Windward/Leeward Low1020.90.5877
Triple Number Windward/Leeward Medium722.50.8304
Triple Number Windward/Leeward High610.10.9835
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1133.6840.8686.3592.3542.0506.2454.0439.7
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7710
Triple Number Coastal/Long Distance Medium1.0489
Triple Number Coastal/Long Distance High1.2064
Triple Number Windward/Leeward Low0.5877
Triple Number Windward/Leeward Medium0.8304
Triple Number Windward/Leeward High0.9835
Coastal/Long Distance0.9481
Predominantly Upwind0.9509
Predominantly Downwind1.0258
For information
General Purpose Handicap (GPH)654.5
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.7710
Tretall Distanseseilas Mellomvind1.0489
Tretall Distanseseilas Mye vind1.2064
Tretall Pølsebane Lite vind0.5877
Tretall Pølsebane Mellomvind0.8304
Tretall Pølsebane Mye vind0.9835
Distanseseilas ett tall1.0414
Enkeltall Motvind0.9509
Enkeltall Medvind1.0258
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low778.20.7710
Triple Number Coastal/Long Distance Medium572.01.0489
Triple Number Coastal/Long Distance High497.31.2064
Triple Number Windward/Leeward Low1020.90.5877
Triple Number Windward/Leeward Medium722.50.8304
Triple Number Windward/Leeward High610.10.9835
Coastal/Long Distance632.90.9481
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind631.00.9509
Predominantly Downwind584.91.0258
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore570.21.0523
Cape Doctor Coastal467.81.2826
Triple Number Coastal/Long Distance Low778.20.7710
Triple Number Coastal/Long Distance Medium572.01.0489
Triple Number Coastal/Long Distance High497.31.2064
Triple Number Windward/Leeward Low1020.90.5877
Triple Number Windward/Leeward Medium722.50.8304
Triple Number Windward/Leeward High610.10.9835
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7710
Triple Number Coastal/Long Distance Medium1.0489
Triple Number Coastal/Long Distance High1.2064
Triple Number Windward/Leeward Low0.5877
Triple Number Windward/Leeward Medium0.8304
Triple Number Windward/Leeward High0.9835
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7710
Triple Number Coastal/Long Distance Medium1.0489
Triple Number Coastal/Long Distance High1.2064
Triple Number Windward/Leeward Low0.5877
Triple Number Windward/Leeward Medium0.8304
Triple Number Windward/Leeward High0.9835
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance632.90.9481
Triple Number Coastal/Long Distance Low778.20.7710
Triple Number Coastal/Long Distance Medium572.01.0489
Triple Number Coastal/Long Distance High497.31.2064
Triple Number Windward/Leeward Low1020.90.5877
Triple Number Windward/Leeward Medium722.50.8304
Triple Number Windward/Leeward High610.10.9835
Predominantly Upwind631.00.9509
Predominantly Downwind584.91.0258
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1133.6840.8686.3592.3542.0506.2454.0439.7
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance632.90.9481
Triple Number Coastal/Long Distance Low778.20.7710
Triple Number Coastal/Long Distance Medium572.01.0489
Triple Number Coastal/Long Distance High497.31.2064
Triple Number Windward/Leeward Low1020.90.5877
Triple Number Windward/Leeward Medium722.50.8304
Triple Number Windward/Leeward High610.10.9835
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1133.6840.8686.3592.3542.0506.2454.0439.7
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low778.20.7710
Triple Number AP Medium572.11.0487
Triple Number AP High497.41.2064
Triple Number Windward/Leeward Low1020.90.5877
Triple Number Windward/Leeward Medium722.50.8304
Triple Number Windward/Leeward High610.10.9835
Single Number Predominant Upwind630.50.9517
Single Number Predominant Reaching543.51.1040
Single Number Predominant Downwind584.91.0258
Predominant Upwind - Low885.40.6777
Predominant Upwind - Low/Med715.40.8387
Predominant Upwind - Medium605.30.9913
Predominant Upwind - Med/High547.41.0961
Predominant Upwind - High527.61.1371
Predominant Downwind Low842.10.7125
Predominant Downwind Low/Med671.20.8939
Predominant Downwind Medium560.41.0707
Predominant Downwind Med/High494.61.2132
Predominant Downwind High456.71.3137
Predominant Reaching Low752.50.7974
Predominant Reaching Low/Med612.40.9797
Predominant Reaching Medium523.61.1459
Predominant Reaching Med/High473.41.2674
Predominant Reaching High448.41.3381
SA/DSPL Upwind18.06SA/DSPL Downwind37.41
Scoring OptionTODTOT
5-Band Windward/Leeward Low1087.00.5520
5-Band Windward/Leeward Low/Med858.30.6990
5-Band Windward/Leeward Medium706.90.8487
5-Band Windward/Leeward Med/High621.40.9655
5-Band Windward/Leeward High583.81.0277
Windward/Leeward 60-40 Low1103.60.5437
Windward/Leeward 60-40 Low/Med873.90.6866
Windward/Leeward 60-40 Medium721.90.8311
Windward/Leeward 60-40 Med/High638.20.9401
Windward/Leeward 60-40 High605.20.9914
5-Band AP Low825.10.7272
5-Band AP Low/Med664.80.9025
5-Band AP Medium561.81.0680
5-Band AP Med/High504.91.1884
5-Band AP High479.31.2519
5-Band SF Bay Tour - Low1035.50.5794
5-Band SF Bay Tour - Low/Med820.90.7309
5-Band SF Bay Tour - Medium679.50.8830
5-Band SF Bay Tour - Med/High601.30.9978
5-Band SF Bay Tour - High568.91.0548
Chicago-Mac Upwind0.9279
Chicago-Mac All Purpose0.9642
Chicago-Mac Downwind1.0058
Bayview-Mac Cove Island0.8799
Bayview-Mac Shore0.8866
Harvest Moon Regatta489.51.2257

Club
Certificate
2024

Boat

Hila 1

ISR 375

IYC
IYC , P.O.Box 3299
Ramat Gan
Israel
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassHanse 375Measurement04/11/2014HINPlan reviewHull constructionSolidCarbon RudderNoLight stanchionsNoTrim tabNo
LOA11.270Max. Beam3.760Draft2.014Displacement7,431Wetted area31.67IMS L10.630LSM010.524Acc. length11.270Sink (kg/mm) 24.07
VCGD0.150VCGM0.128RM Rated (kg·m) 195.7Limit of positive stability(°) N/AStability IndexN/ADefault crew weight740Declared crew weightN/A
PROPELLER
Propeller TypeSolid 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.436PBW0.151PIPA0.0197
EDL2.823ST10.042ST20.180
ST30.180ST40.112ST50.310
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunners/Checkstays0Spreaders2Rotating mastNo
P14.190IG15.020ISP15.120MDT10.112MDL10.230MDT20.110MDL20.180TL0.880MW0.230GO0.260
E5.150J4.150BAS1.670FSD0.031SFJ0.000SPL4.743WPLTPS4.650BD0.200MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered0.160Flotation Date19/05/2011Measurer134
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible

Club
Certificate
2024

Boat

Hila 1

ISR 375

IYC
IYC , P.O.Box 3299
Ramat Gan
Israel
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment00.140.951.653.004.2040.8806/05/2024
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment22.865.066.687.1815.10NoYes066.6504/10/201430.600.991.942.893.8014.60NoNo 28.3710/02/2023
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment116.0014.0015.008.387.50112%102.5514/10/2014
CRUISER/RACER REQUIREMENTS*
Accommodation length11.3 mTable area0.55 m²Headroom1.78 mMinimum number of berths5Personal gear stowage0.20 m³Fresh water capacity133 lMinimum number of seats in cockpit5Food stowage0.30 m³Fuel capacity76 l
*This list refers to the calculated requirements. See IMS Appendix 1 for the complete list of requirements.