Club
Certificate
2023

Boat

KNEE DEEP

USA25006

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat Angles42.0°40.0°38.2°37.6°37.6°37.6°38.2°
Beat VMG3.544.204.584.714.784.814.79
52°5.326.076.416.566.636.676.69
60°5.556.226.546.716.796.846.88
75°5.686.326.656.867.007.107.20
90°5.616.376.767.017.187.307.55
110°5.426.286.767.077.357.638.19
120°5.226.186.707.067.397.718.45
135°4.745.796.456.857.207.588.51
150°4.045.105.956.506.877.207.97
Run VMG3.504.415.185.816.346.737.35
Gybe Angles145.7°150.2°154.1°162.8°175.4°179.0°179.0°

APH: 593.7

CDL: 7.776

GPH: 658.9

CertNo: US2500

BOAT
ClassJ-34DesignerR.JOHNSTONEBuilderTILLOTSON-PEARSONAge date12/1985Series date01/1984Offset fileUS18419.BOFData fileUSA 25006
HULL
Length Overall10.378 mMaximum Beam3.469 mDraft1.842 mDisplacement3,677 kgDLR8.5257IMS DivisionPerformanceDynamic Allowance0.020%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameter0.394m
CREW
Maximum weight461 kgMinimum weight346 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail25.1125.52Headsail Luffed38.7538.75Headsail FlyingSymmetric77.6077.60Asymmetric57.9861.07 (1 asymmetric(s) with SHW/SFL < 85%)
STORM SAIL AREAS (m²)
Trysail7.28Storm Jib9.18Heavy Weather Jib24.79
SAIL LIMITS
Headsails5  Spinnakers4 * Asymmetric may 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.
ORC Ref  04560002NOMIssued on 05/06/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

KNEE DEEP

USA25006

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG1016.4857.4786.6763.6753.6748.5751.5
52°676.3593.5561.5548.7543.0539.8537.7
60°648.6578.8550.3536.8530.5526.5523.0
75°633.6570.0541.3524.6513.9507.4499.7
90°641.2564.8532.5513.7501.5493.3476.8
110°663.8572.9532.8509.2489.8471.9439.8
120°690.3582.1537.1509.7487.2466.7426.0
135°759.5621.5558.6525.6500.0475.0423.1
150°891.9706.3605.2553.7524.0500.3451.8
Run VMG1029.9815.5694.5619.5567.7534.9489.5
Selected Courses
Windward / Leeward1023.1836.4740.6691.5660.6641.7620.5
All purpose793.9667.7607.8577.5558.7545.0523.5
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward717.70.8360
All purpose593.71.0106
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low730.70.8211
Triple Number Coastal/Long Distance Medium590.41.0163
Triple Number Coastal/Long Distance High540.41.1103
Triple Number Windward/Leeward Low929.80.6453
Triple Number Windward/Leeward Medium712.30.8424
Triple Number Windward/Leeward High638.50.9397
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance642.10.9344
Triple Number Coastal/Long Distance Low730.70.8211
Triple Number Coastal/Long Distance Medium590.41.0163
Triple Number Coastal/Long Distance High540.41.1103
Triple Number Windward/Leeward Low929.80.6453
Triple Number Windward/Leeward Medium712.30.8424
Triple Number Windward/Leeward High638.50.9397
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1023.8790.8675.5613.4578.7550.9501.9
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7397
Downwind "popa"0.8839
70% up, 30% down "Ilhabela"0.7778
30% up, 70% down "Ilhabela-inverso"0.8351
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low730.70.8211
Triple Number Coastal/Long Distance Medium590.41.0163
Triple Number Coastal/Long Distance High540.41.1103
Triple Number Windward/Leeward Low929.80.6453
Triple Number Windward/Leeward Medium712.30.8424
Triple Number Windward/Leeward High638.50.9397
Predominantly Upwind637.20.9417
Predominantly Downwind600.40.9994
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low730.70.8211
Triple Number All Purpose Medium590.41.0163
Triple Number All Purpose High540.41.1103
Triple Number Windward/Leeward Low929.80.6453
Triple Number Windward/Leeward Medium712.30.8424
Triple Number Windward/Leeward High638.50.9397
Predominantly Upwind637.20.9417
Predominantly Downwind600.40.9994
Predominantly Upwind Low800.00.7500
Predominantly Upwind Medium657.30.9129
Predominantly Upwind High631.50.9501
Predominantly Downwind Low803.40.7468
Predominantly Downwind Medium596.61.0057
Predominantly Downwind High507.41.1824
Chicago-Mac Upwind0.9275
Chicago-Mac All Purpose0.9531
Chicago-Mac Downwind0.9835
Bayview-Mac Cove Island0.8989
Bayview-Mac Shore0.9060
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching566.11.0600
Predominantly Reaching Low667.30.8991
Predominantly Reaching Medium561.21.0692
Predominantly Reaching High507.51.1822
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1008.80.5948
5-Band Low / Medium857.10.7000
5-Band Medium702.30.8543
5-Band Medium / High645.50.9295
5-Band High624.20.9613
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance642.10.9344
Triple Number Coastal/Long Distance Low730.70.8211
Triple Number Coastal/Long Distance Medium590.41.0163
Triple Number Coastal/Long Distance High540.41.1103
Triple Number Windward/Leeward Low929.80.6453
Triple Number Windward/Leeward Medium712.30.8424
Triple Number Windward/Leeward High638.50.9397
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1023.8790.8675.5613.4578.7550.9501.9
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance642.10.9344
Triple Number Coastal/Long Distance Low730.70.8211
Triple Number Coastal/Long Distance Medium590.41.0163
Triple Number Coastal/Long Distance High540.41.1103
Triple Number Windward/Leeward Low929.80.6453
Triple Number Windward/Leeward Medium712.30.8424
Triple Number Windward/Leeward High638.50.9397
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1023.8790.8675.5613.4578.7550.9501.9
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance642.1
Triple Number Coastal/Long Distance Low730.7
Triple Number Coastal/Long Distance Medium590.4
Triple Number Coastal/Long Distance High540.4
Triple Number Windward/Leeward Low929.8
Triple Number Windward/Leeward Medium712.3
Triple Number Windward/Leeward High638.5
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1023.8790.8675.5613.4578.7550.9501.9
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance642.10.9344
Triple Number Coastal/Long Distance Low730.70.8211
Triple Number Coastal/Long Distance Medium590.41.0163
Triple Number Coastal/Long Distance High540.41.1103
Triple Number Windward/Leeward Low929.80.6453
Triple Number Windward/Leeward Medium712.30.8424
Triple Number Windward/Leeward High638.50.9397
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1023.8790.8675.5613.4578.7550.9501.9
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)642.10.9344
Triple Number Coastal/Long Distance Low730.70.8211
Triple Number Coastal/Long Distance Medium590.41.0163
Triple Number Coastal/Long Distance High540.41.1103
Triple Number Windward/Leeward Low929.80.6453
Triple Number Windward/Leeward Medium712.30.8424
Triple Number Windward/Leeward High638.50.9397
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1023.8790.8675.5613.4578.7550.9501.9
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low730.70.8211
Triple Number Coastal/Long Distance Medium590.41.0163
Triple Number Coastal/Long Distance High540.41.1103
Triple Number Windward/Leeward Low929.80.6453
Triple Number Windward/Leeward Medium712.30.8424
Triple Number Windward/Leeward High638.50.9397
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8211
Triple Number Coastal/Long Distance Medium1.0163
Triple Number Coastal/Long Distance High1.1103
Triple Number Windward/Leeward Low0.6453
Triple Number Windward/Leeward Medium0.8424
Triple Number Windward/Leeward High0.9397
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1023.8790.8675.5613.4578.7550.9501.9
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance642.10.9344
Triple Number Coastal/Long Distance Low730.70.8211
Triple Number Coastal/Long Distance Medium590.41.0163
Triple Number Coastal/Long Distance High540.41.1103
Triple Number Windward/Leeward Low929.80.6453
Triple Number Windward/Leeward Medium712.30.8424
Triple Number Windward/Leeward High638.50.9397
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1023.8790.8675.5613.4578.7550.9501.9
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low730.70.8211
Triple Number Coastal/Long Distance Medium590.41.0163
Triple Number Coastal/Long Distance High540.41.1103
Triple Number Windward/Leeward Low929.80.6453
Triple Number Windward/Leeward Medium712.30.8424
Triple Number Windward/Leeward High638.50.9397
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance642.10.9344
Triple Number Coastal/Long Distance Low730.70.8211
Triple Number Coastal/Long Distance Medium590.41.0163
Triple Number Coastal/Long Distance High540.41.1103
Triple Number Windward/Leeward Low929.80.6453
Triple Number Windward/Leeward Medium712.30.8424
Triple Number Windward/Leeward High638.50.9397
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1023.8790.8675.5613.4578.7550.9501.9
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low929.80.6453
Triple Number Windward/Leeward Medium712.30.8424
Triple Number Windward/Leeward High638.50.9397
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1023.8790.8675.5613.4578.7550.9501.9
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low730.7
Triple Number Coastal/Long Distance Medium590.4
Triple Number Coastal/Long Distance High540.4
Triple Number Windward/Leeward Low929.8
Triple Number Windward/Leeward Medium712.3
Triple Number Windward/Leeward High638.5
Predominantly Upwind637.2
Predominantly Downwind600.4
Predominantly Reaching578.1
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance642.10.9344
Triple Number Coastal/Long Distance Low730.70.8211
Triple Number Coastal/Long Distance Medium590.41.0163
Triple Number Coastal/Long Distance High540.41.1103
Triple Number Windward/Leeward Low929.80.6453
Triple Number Windward/Leeward Medium712.30.8424
Triple Number Windward/Leeward High638.50.9397
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1023.8790.8675.5613.4578.7550.9501.9
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8211
Triple Number Coastal/Long Distance Medium1.0163
Triple Number Coastal/Long Distance High1.1103
Triple Number Windward/Leeward Low0.6453
Triple Number Windward/Leeward Medium0.8424
Triple Number Windward/Leeward High0.9397
Coastal/Long Distance0.9344
Predominantly Upwind0.9417
Predominantly Downwind0.9994
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.8211
Tretall Distanseseilas Mellomvind1.0163
Tretall Distanseseilas Mye vind1.1103
Tretall Pølsebane Lite vind0.6453
Tretall Pølsebane Mellomvind0.8424
Tretall Pølsebane Mye vind0.9397
Distanseseilas ett tall (OSN 8-16kn)0.9344
Distanseseilas ett tall (APH 6-20kn)1.0106
Enkeltall Motvind0.9417
Enkeltall Medvind0.9994
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low730.70.8211
Triple Number Coastal/Long Distance Medium590.41.0163
Triple Number Coastal/Long Distance High540.41.1103
Triple Number Windward/Leeward Low929.80.6453
Triple Number Windward/Leeward Medium712.30.8424
Triple Number Windward/Leeward High638.50.9397
Coastal/Long Distance642.10.9344
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind637.20.9417
Predominantly Downwind600.40.9994
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore626.90.9571
Cape Doctor Coastal530.01.1321
Triple Number Coastal/Long Distance Low730.70.8211
Triple Number Coastal/Long Distance Medium590.41.0163
Triple Number Coastal/Long Distance High540.41.1103
Triple Number Windward/Leeward Low929.80.6453
Triple Number Windward/Leeward Medium712.30.8424
Triple Number Windward/Leeward High638.50.9397
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8211
Triple Number Coastal/Long Distance Medium1.0163
Triple Number Coastal/Long Distance High1.1103
Triple Number Windward/Leeward Low0.6453
Triple Number Windward/Leeward Medium0.8424
Triple Number Windward/Leeward High0.9397
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8211
Triple Number Coastal/Long Distance Medium1.0163
Triple Number Coastal/Long Distance High1.1103
Triple Number Windward/Leeward Low0.6453
Triple Number Windward/Leeward Medium0.8424
Triple Number Windward/Leeward High0.9397
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance642.10.9344
Triple Number Coastal/Long Distance Low730.70.8211
Triple Number Coastal/Long Distance Medium590.41.0163
Triple Number Coastal/Long Distance High540.41.1103
Triple Number Windward/Leeward Low929.80.6453
Triple Number Windward/Leeward Medium712.30.8424
Triple Number Windward/Leeward High638.50.9397
Predominantly Upwind637.20.9417
Predominantly Downwind600.40.9994
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1023.8790.8675.5613.4578.7550.9501.9
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance642.10.9344
Triple Number Coastal/Long Distance Low730.70.8211
Triple Number Coastal/Long Distance Medium590.41.0163
Triple Number Coastal/Long Distance High540.41.1103
Triple Number Windward/Leeward Low929.80.6453
Triple Number Windward/Leeward Medium712.30.8424
Triple Number Windward/Leeward High638.50.9397
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1023.8790.8675.5613.4578.7550.9501.9
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low730.70.8211
Triple Number All Purpose Medium590.41.0163
Triple Number All Purpose High540.41.1103
Triple Number Windward/Leeward Low929.80.6453
Triple Number Windward/Leeward Medium712.30.8424
Triple Number Windward/Leeward High638.50.9397
Predominantly Upwind637.20.9417
Predominantly Downwind600.40.9994
Predominantly Upwind Low800.00.7500
Predominantly Upwind Medium657.30.9129
Predominantly Upwind High631.50.9501
Predominantly Downwind Low803.40.7468
Predominantly Downwind Medium596.61.0057
Predominantly Downwind High507.41.1824
Chicago-Mac Upwind0.9275
Chicago-Mac All Purpose0.9531
Chicago-Mac Downwind0.9835
Bayview-Mac Cove Island0.8989
Bayview-Mac Shore0.9060
Harvest Moon Regatta523.51.1461
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy627.80.9557
San Francisco Bay Medium705.40.8505
Predominantly Reaching566.11.0600
Predominantly Reaching Low667.30.8991
Predominantly Reaching Medium561.21.0692
Predominantly Reaching High507.51.1822
Windward/Leeward 60-40 Low931.20.6443
Windward/Leeward 60-40 Medium734.10.8173
Windward/Leeward 60-40 High676.70.8866
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1008.80.5948
5-Band Low / Medium857.10.7000
5-Band Medium702.30.8543
5-Band Medium / High645.50.9295
5-Band High624.20.9613
ORC Ref  04560002NOMIssued on 05/06/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

KNEE DEEP

USA25006

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ-34MeasurementHINPlan reviewHull constructionCoredCarbon RudderNoLight stanchionsNoTrim tabNo
LOA10.378Max. Beam3.469Draft1.842Displacement3,677Wetted area18.93IMS L7.903LSM07.554Acc. length10.378Sink (kg/mm) 14.27
VCGD0.091VCGM0.077RM Rated (kg·m) 83.4Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.394PBW0.102PIPA0.0040
PSD0.030PHD0.057PHL0.141
PSA22.4°ESL0.669
ST10.027ST20.089ST30.089
ST40.042ST50.174
RIG
Forestay tensionAftInner stayNone FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders2Rotating mastNo
P11.604IG13.430ISP13.354MDT10.108MDL10.177MDT20.089MDL20.121TL1.004MW0.121GO0.155
E3.584J3.854BAS1.556FSD0.022SFJ0.000SPL3.852WPLTPSBD0.119MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date01/06/2023MeasurerComment
SFFP0.689FFMFF1.191LCFcl5.470SG
SAFP9.111FAMFA0.824LCFsh5.734HBI1.004
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  04560002NOMIssued on 05/06/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

KNEE DEEP

USA25006

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentM10.170.801.322.353.0825.11
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentJ10.110.641.332.744.215.9713.66NoNo 38.75
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentS213.2813.2813.286.997.1077.6020/07/2017
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment013.5212.5613.045.016.6475%57.98
ORC Ref  04560002NOMIssued on 05/06/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org