International
Certificate
2022

Boat

Lethe

NOR 12488

Norges Seilforbund
Sognsveien 73
0854 OSLO
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat Angles43.0°41.8°40.8°39.6°39.0°39.1°39.4°
Beat VMG3.283.974.514.814.914.955.03
52°5.035.976.606.896.997.047.11
60°5.336.276.807.067.197.257.31
75°5.766.707.097.267.437.597.72
90°6.016.897.297.597.817.968.22
110°5.806.817.307.708.038.419.01
120°5.596.707.237.678.138.579.14
135°5.066.246.977.407.848.329.43
150°4.325.416.356.927.237.528.20
Run VMG3.754.685.505.996.346.857.50
Gybe Angles145.1°148.0°148.7°150.5°166.4°175.4°176.3°

APH: 568.8

CDL: 8.528

GPH: 635.8

CertNo: 12488

BOAT
ClassFirst 34.7DesignerB.FarrBuilderBeneteauAge date01/2008Series date01/2004Offset fileFIRST347.offData fileNOR12488
HULL
Length Overall9.980 mMaximum Beam3.372 mDraft1.998 mDisplacement4,594 kgDLR6.3966IMS DivisionCruiser/RacerDynamic Allowance0.185%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.405m
CREW
Maximum weight585 kgMinimum weight439 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail34.8435.61Headsail Luffed26.3926.39Headsail FlyingSymmetricAsymmetric92.8292.82 (1 asymmetric(s) with SHW/SFL < 85%)
STORM SAIL AREAS (m²)
Trysail10.07Storm Jib8.85Heavy Weather Jib23.87
SAIL LIMITS
Headsails5  Spinnakers4
STABILITY
Righting Moment95.6 kg·mStability Index122.8
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.
ORC Ref  034400027W3Issued on 06/08/2022Valid until 31/12/2022
VPP ver: 2022 1.04 | © ORC | www.orc.org

International
Certificate
2022

Boat

Lethe

NOR 12488

Norges Seilforbund
Sognsveien 73
0854 OSLO
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG1096.3907.7799.0748.5732.6727.0715.1
52°715.1603.0545.4522.7514.7511.2506.1
60°675.1574.4529.7510.0500.5496.4492.8
75°624.6537.7508.1495.6484.4474.2466.2
90°598.8522.9493.8474.1461.1452.1437.7
110°621.2528.6493.2467.7448.5428.0399.5
120°644.1537.2497.7469.7442.7419.9393.8
135°710.9577.4516.3486.7459.3432.8381.7
150°832.5665.6567.2520.6497.7478.6438.8
Run VMG961.3768.6655.0600.8568.1525.6480.0
Selected Courses
Windward / Leeward1028.8838.1727.0674.6650.3626.3597.6
All purpose786.8652.7583.7550.0531.2516.0493.2
Single Number Scoring Options
CourseTime On DistanceTime On Time
Windward / Leeward705.60.8503
All purpose568.81.0548
 
Custom scoring options for Australia
Single NumberTime On DistanceTime On Time
Triple Number Coastal/Long Distance Low719.80.8336
Triple Number Coastal/Long Distance Medium565.11.0618
Triple Number Coastal/Long Distance High511.21.1736
Triple Number Windward/Leeward Low933.40.6428
Triple Number Windward/Leeward Medium699.60.8576
Triple Number Windward/Leeward High621.50.9654
Custom scoring options for Austria
Single NumberTime On DistanceTime On Time
Coastal/Long Distance620.10.9675
Triple Number Coastal/Long Distance Low719.80.8336
Triple Number Coastal/Long Distance Medium565.11.0618
Triple Number Coastal/Long Distance High511.21.1736
Triple Number Windward/Leeward Low933.40.6428
Triple Number Windward/Leeward Medium699.60.8576
Triple Number Windward/Leeward High621.50.9654
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1022.0785.5656.3587.1551.5520.8472.6
Custom scoring options for Brazil
Single NumberTime On Time
Upwind "bolina"0.7335
Downwind "popa"0.9212
70% up, 30% down "Ilhabela"0.7812
30% up, 70% down "Ilhabela-inverso"0.8555
Custom scoring options for Bulgaria
Single NumberTime On DistanceTime On Time
Triple Number Coastal/Long Distance Low719.80.8336
Triple Number Coastal/Long Distance Medium565.11.0618
Triple Number Coastal/Long Distance High511.21.1736
Triple Number Windward/Leeward Low933.40.6428
Triple Number Windward/Leeward Medium699.60.8576
Triple Number Windward/Leeward High621.50.9654
Predominantly Upwind620.00.9678
Predominantly Downwind571.31.0503
Custom scoring options for Canada
Single NumberTime On DistanceTime On Time
Triple Number All Purpose Low719.80.8336
Triple Number All Purpose Medium565.11.0618
Triple Number All Purpose High511.21.1736
Triple Number Windward/Leeward Low933.40.6428
Triple Number Windward/Leeward Medium699.60.8576
Triple Number Windward/Leeward High621.50.9654
Predominantly Upwind620.00.9678
Predominantly Downwind571.31.0503
Predominantly Upwind Low820.70.7310
Predominantly Upwind Medium643.30.9327
Predominantly Upwind High602.00.9967
Predominantly Downwind Low770.90.7783
Predominantly Downwind Medium565.61.0609
Predominantly Downwind High483.51.2409
Chicago-Mac Upwind0.9513
Chicago-Mac All Purpose0.9902
Chicago-Mac Downwind1.0348
Bayview-Mac Cove Island0.9224
Bayview-Mac Shore0.9254
Victoria-Maui1.0987
Custom scoring options for Cyprus
Single NumberTime On DistanceTime On Time
Coastal/Long Distance620.10.9675
Triple Number Coastal/Long Distance Low719.80.8336
Triple Number Coastal/Long Distance Medium565.11.0618
Triple Number Coastal/Long Distance High511.21.1736
Triple Number Windward/Leeward Low933.40.6428
Triple Number Windward/Leeward Medium699.60.8576
Triple Number Windward/Leeward High621.50.9654
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1022.0785.5656.3587.1551.5520.8472.6
Custom scoring options for Denmark
Single NumberTime On DistanceTime On Time
Coastal/Long Distance620.10.9675
Triple Number Coastal/Long Distance Low719.80.8336
Triple Number Coastal/Long Distance Medium565.11.0618
Triple Number Coastal/Long Distance High511.21.1736
Triple Number Windward/Leeward Low933.40.6428
Triple Number Windward/Leeward Medium699.60.8576
Triple Number Windward/Leeward High621.50.9654
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1022.0785.5656.3587.1551.5520.8472.6
Custom scoring options for Spain
Single NumberTime On Distance
Coastal/Long Distance620.1
Triple Number Coastal/Long Distance Low719.8
Triple Number Coastal/Long Distance Medium565.1
Triple Number Coastal/Long Distance High511.2
Triple Number Windward/Leeward Low933.4
Triple Number Windward/Leeward Medium699.6
Triple Number Windward/Leeward High621.5
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1022.0785.5656.3587.1551.5520.8472.6
Custom scoring options for Estonia
Single NumberTime On DistanceTime On Time
Coastal/Long Distance620.10.9675
Triple Number Coastal/Long Distance Low719.80.8336
Triple Number Coastal/Long Distance Medium565.11.0618
Triple Number Coastal/Long Distance High511.21.1736
Triple Number Windward/Leeward Low933.40.6428
Triple Number Windward/Leeward Medium699.60.8576
Triple Number Windward/Leeward High621.50.9654
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1022.0785.5656.3587.1551.5520.8472.6
Custom scoring options for Finland
Single NumberTime On DistanceTime On Time
FinRating (Coastal/Long Distance)620.10.9675
Triple Number Coastal/Long Distance Low719.80.8336
Triple Number Coastal/Long Distance Medium565.11.0618
Triple Number Coastal/Long Distance High511.21.1736
Triple Number Windward/Leeward Low933.40.6428
Triple Number Windward/Leeward Medium699.60.8576
Triple Number Windward/Leeward High621.50.9654
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1022.0785.5656.3587.1551.5520.8472.6
Custom scoring options for France
Single NumberTime On DistanceTime On Time
Triple Number Coastal/Long Distance Low719.80.8336
Triple Number Coastal/Long Distance Medium565.11.0618
Triple Number Coastal/Long Distance High511.21.1736
Triple Number Windward/Leeward Low933.40.6428
Triple Number Windward/Leeward Medium699.60.8576
Triple Number Windward/Leeward High621.50.9654
Custom scoring options for Germany
Single NumberTime On Time
Triple Number Coastal/Long Distance Low0.8336
Triple Number Coastal/Long Distance Medium1.0618
Triple Number Coastal/Long Distance High1.1736
Triple Number Windward/Leeward Low0.6428
Triple Number Windward/Leeward Medium0.8576
Triple Number Windward/Leeward High0.9654
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1022.0785.5656.3587.1551.5520.8472.6
Custom scoring options for Greece
Single NumberTime On DistanceTime On Time
Coastal/Long Distance620.10.9675
Triple Number Coastal/Long Distance Low719.80.8336
Triple Number Coastal/Long Distance Medium565.11.0618
Triple Number Coastal/Long Distance High511.21.1736
Triple Number Windward/Leeward Low933.40.6428
Triple Number Windward/Leeward Medium699.60.8576
Triple Number Windward/Leeward High621.50.9654
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1022.0785.5656.3587.1551.5520.8472.6
Custom scoring options for Hungary
Single NumberTime On DistanceTime On Time
Triple Number Coastal/Long Distance Low719.80.8336
Triple Number Coastal/Long Distance Medium565.11.0618
Triple Number Coastal/Long Distance High511.21.1736
Triple Number Windward/Leeward Low933.40.6428
Triple Number Windward/Leeward Medium699.60.8576
Triple Number Windward/Leeward High621.50.9654
Custom scoring options for Israel
Single NumberTime On DistanceTime On Time
Coastal/Long Distance620.10.9675
Triple Number Coastal/Long Distance Low719.80.8336
Triple Number Coastal/Long Distance Medium565.11.0618
Triple Number Coastal/Long Distance High511.21.1736
Triple Number Windward/Leeward Low933.40.6428
Triple Number Windward/Leeward Medium699.60.8576
Triple Number Windward/Leeward High621.50.9654
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1022.0785.5656.3587.1551.5520.8472.6
Custom scoring options for Italy
Single NumberTime On DistanceTime On Time
Coastal/Long Distance620.10.9675
Triple Number Coastal/Long Distance Low719.80.8336
Triple Number Coastal/Long Distance Medium565.11.0618
Triple Number Coastal/Long Distance High511.21.1736
Triple Number Windward/Leeward Low933.40.6428
Triple Number Windward/Leeward Medium699.60.8576
Triple Number Windward/Leeward High621.50.9654
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1022.0785.5656.3587.1551.5520.8472.6
Custom scoring options for Japan
Single NumberTime On DistanceTime On Time
Triple Number Windward/Leeward Low933.40.6428
Triple Number Windward/Leeward Medium699.60.8576
Triple Number Windward/Leeward High621.50.9654
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1022.0785.5656.3587.1551.5520.8472.6
Custom scoring options for Korea
Single NumberTime On Distance
Triple Number Coastal/Long Distance Low719.8
Triple Number Coastal/Long Distance Medium565.1
Triple Number Coastal/Long Distance High511.2
Triple Number Windward/Leeward Low933.4
Triple Number Windward/Leeward Medium699.6
Triple Number Windward/Leeward High621.5
Predominantly Upwind620.0
Predominantly Downwind571.3
Predominantly Reaching546.3
Custom scoring options for Lithuania
Single NumberTime On DistanceTime On Time
Coastal/Long Distance620.10.9675
Triple Number Coastal/Long Distance Low719.80.8336
Triple Number Coastal/Long Distance Medium565.11.0618
Triple Number Coastal/Long Distance High511.21.1736
Triple Number Windward/Leeward Low933.40.6428
Triple Number Windward/Leeward Medium699.60.8576
Triple Number Windward/Leeward High621.50.9654
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1022.0785.5656.3587.1551.5520.8472.6
Custom scoring options for Netherlands
Single NumberTime On Time
Triple Number Coastal/Long Distance Low0.8336
Triple Number Coastal/Long Distance Medium1.0618
Triple Number Coastal/Long Distance High1.1736
Triple Number Windward/Leeward Low0.6428
Triple Number Windward/Leeward Medium0.8576
Triple Number Windward/Leeward High0.9654
Coastal/Long Distance0.9675
Predominantly Upwind0.9678
Predominantly Downwind1.0503
Custom scoring options for Norway
Single NumberTime On Time
Distanseseilas (NOR-rating ett tall)0.9675
Tretall Distanseseilas Lite vind0.8336
Tretall Distanseseilas Mellomvind1.0618
Tretall Distanseseilas Mye vind1.1736
Tretall Pølsebane Lite vind0.6428
Tretall Pølsebane Mellomvind0.8576
Tretall Pølsebane Mye vind0.9654
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Distanseseilas1022.0785.5656.3587.1551.5520.8472.6
Custom scoring options for Portugal
Single NumberTime On DistanceTime On Time
Triple Number Coastal/Long Distance Low719.80.8336
Triple Number Coastal/Long Distance Medium565.11.0618
Triple Number Coastal/Long Distance High511.21.1736
Triple Number Windward/Leeward Low933.40.6428
Triple Number Windward/Leeward Medium699.60.8576
Triple Number Windward/Leeward High621.50.9654
Coastal/Long Distance620.10.9675
Custom scoring options for Russia
Single NumberTime On DistanceTime On Time
Predominantly Upwind620.00.9678
Predominantly Downwind571.31.0503
Custom scoring options for South Africa
Single NumberTime On DistanceTime On Time
Cape Doctor Inshore606.20.9898
Cape Doctor Coastal500.11.1999
Triple Number Coastal/Long Distance Low719.80.8336
Triple Number Coastal/Long Distance Medium565.11.0618
Triple Number Coastal/Long Distance High511.21.1736
Triple Number Windward/Leeward Low933.40.6428
Triple Number Windward/Leeward Medium699.60.8576
Triple Number Windward/Leeward High621.50.9654
Custom scoring options for Slovenia
Single NumberTime On Time
Triple Number Coastal/Long Distance Low0.8336
Triple Number Coastal/Long Distance Medium1.0618
Triple Number Coastal/Long Distance High1.1736
Triple Number Windward/Leeward Low0.6428
Triple Number Windward/Leeward Medium0.8576
Triple Number Windward/Leeward High0.9654
Custom scoring options for Switzerland
Single NumberTime On Time
Triple Number Coastal/Long Distance Low0.8336
Triple Number Coastal/Long Distance Medium1.0618
Triple Number Coastal/Long Distance High1.1736
Triple Number Windward/Leeward Low0.6428
Triple Number Windward/Leeward Medium0.8576
Triple Number Windward/Leeward High0.9654
Custom scoring options for Sweden
Single NumberTime On DistanceTime On Time
Coastal/Long Distance620.10.9675
Triple Number Coastal/Long Distance Low719.80.8336
Triple Number Coastal/Long Distance Medium565.11.0618
Triple Number Coastal/Long Distance High511.21.1736
Triple Number Windward/Leeward Low933.40.6428
Triple Number Windward/Leeward Medium699.60.8576
Triple Number Windward/Leeward High621.50.9654
Predominantly Upwind620.00.9678
Predominantly Downwind571.31.0503
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1022.0785.5656.3587.1551.5520.8472.6
Custom scoring options for Ukraine
Single NumberTime On DistanceTime On Time
Coastal/Long Distance620.10.9675
Triple Number Coastal/Long Distance Low719.80.8336
Triple Number Coastal/Long Distance Medium565.11.0618
Triple Number Coastal/Long Distance High511.21.1736
Triple Number Windward/Leeward Low933.40.6428
Triple Number Windward/Leeward Medium699.60.8576
Triple Number Windward/Leeward High621.50.9654
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1022.0785.5656.3587.1551.5520.8472.6
Custom scoring options for United States of America
Single NumberTime On DistanceTime On Time
Triple Number All Purpose Low719.80.8336
Triple Number All Purpose Medium565.11.0618
Triple Number All Purpose High511.21.1736
Triple Number Windward/Leeward Low933.40.6428
Triple Number Windward/Leeward Medium699.60.8576
Triple Number Windward/Leeward High621.50.9654
Predominantly Upwind620.00.9678
Predominantly Downwind571.31.0503
Predominantly Upwind Low820.70.7310
Predominantly Upwind Medium643.30.9327
Predominantly Upwind High602.00.9967
Predominantly Downwind Low770.90.7783
Predominantly Downwind Medium565.61.0609
Predominantly Downwind High483.51.2409
Chicago-Mac Upwind0.9513
Chicago-Mac All Purpose0.9902
Chicago-Mac Downwind1.0348
Bayview-Mac Cove Island0.9224
Bayview-Mac Shore0.9254
Harvest Moon Regatta500.81.1982
Victoria-Maui1.0987
5-Band
Windward/Leeward		Time On DistanceTime On Time
5-Band Low1014.10.5917
5-Band Low / Medium855.50.7014
5-Band Medium688.90.8710
5-Band Medium / High629.70.9529
5-Band High602.50.9958
ORC Ref  034400027W3Issued on 06/08/2022Valid until 31/12/2022
VPP ver: 2022 1.04 | © ORC | www.orc.org

International
Certificate
2022

Boat

Lethe

NOR 12488

Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassFirst 34.7Measurement02/04/2022HINFR-BEYF6138J708Plan reviewHull constructionSolidCarbon RudderNoLight stanchionsNoTrim tabNo
LOA9.980Max. Beam3.372Draft1.998Displacement4,594Wetted area22.09IMS L9.096LSM08.954Acc. length9.982Sink (kg/mm) 16.45
VCGD-0.024VCGM-0.008RM Measured (kg·m) 95.6RM Default (kg·m) 99.6Limit of positive stability(°) 123.3Stability Index122.8
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.405PBW0.120PIPA0.0033
EDL1.770ST10.042ST20.180
ST30.180ST40.112ST50.270
RIG
Forestay tensionAftInner stayNone FittedCarbon mastYesHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders2
P12.810IG13.170ISP13.750MDT10.114MDL10.164MDT20.107MDL20.134TL0.995MW0.164GO0.199
E4.490J3.670BAS1.540FSD0.035SFJ0.000SPL0.000WPLTPS5.100BDMWT95.30MCG5.700
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodPoles incliningFlotation Date24/04/2022MeasurerPBComment
SFFP0.172FFM1.303FF1.305LCFcl5.387SG1.0190
SAFP9.530FAM1.038FA1.040LCFsh5.629HBI1.165
W165.7W265.7W365.7W465.7
PD1594.5PD2589.8PD3600.2PD4606.9
WD11.040PLM9000.00GSA1.0RSA1.0
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
TANKSIdDescriptionSp.WghtCapacityConditionLCGVCG4DieselFuel6057.200.103Water heaterWater2507.052Holding tankWater9002.601WaterWater10004.20Total deductible47.200.10
OTHER ITEMSIdKindDescriptionWeightLCGVCG3BatteryStart battery lead253.302Battery100ah Lifepeo133.701EngineYanmar Ym20Total deductible0
ORC Ref  034400027W3Issued on 06/08/2022Valid until 31/12/2022
VPP ver: 2022 1.04 | © ORC | www.orc.org

International
Certificate
2022

Boat

Lethe

NOR 12488

Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateMakerMaterialComment20220.321.061.782.933.7634.84Unknown306-2016091307080.060.901.692.893.7634.0313/09/2016
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateMakerMaterialComment20220.090.631.142.062.913.7813.19NoNo 26.39UnknownJL1306-2018012309030.080.561.071.972.853.7312.93NoNo 25.0723/01/20183 medium306-2019091112090.100.470.921.772.603.4012.30NoNo 21.5211/09/20193Di 360 RAW
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateMakerMaterialComment306-20170808130415.2212.4213.828.187.58108%92.8208/08/20171-20170810122915.0212.4913.767.516.69112%84.2010/08/2017Mål fra 1Sails sverige202213.7812.0712.935.397.0576%61.63Unknown
ORC Ref  034400027W3Issued on 06/08/2022Valid until 31/12/2022
VPP ver: 2022 1.04 | © ORC | www.orc.org