Club
Certificate
2023

Boat

CRESCENT IV

JPN 6860

JAPAN SAILING FEDERATION
4-2, Kasumigaokacho,
Shinjuku, Tokyo
Japan
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat Angles42.4°40.6°38.4°36.4°35.8°35.2°35.0°
Beat VMG3.904.805.455.846.036.146.25
52°5.927.077.728.058.248.368.50
60°6.237.317.898.228.468.618.78
75°6.427.468.018.398.708.979.29
90°6.287.528.118.408.769.109.74
110°6.407.678.348.869.309.6210.28
120°6.247.578.298.889.4510.0311.02
135°5.597.017.938.569.189.8611.65
150°4.736.007.107.908.388.8510.13
Run VMG4.095.206.156.857.267.678.77
Gybe Angles143.3°146.0°148.7°151.0°149.8°147.7°143.7°

APH: 488.4

CDL: 11.748

GPH: 549.4

CertNo: 230240

BOAT
ClassJ 121DesignerJOHNSTONEBuilderCCF COMPONENTSAge date08/2018Series date08/2017Offset fileJ121FK.offData fileJC230240
HULL
Length Overall12.190 mMaximum Beam3.754 mDraft2.541 mDisplacement6,400 kgDLR4.3559IMS DivisionCruiser/RacerDynamic Allowance0.170%Age Allowance0.195%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.440m
CREW
Maximum weight826 kgMinimum weight620 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail47.2848.22Headsail Luffed40.5240.52Headsail FlyingSymmetricAsymmetric152.26152.26 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail13.53Storm Jib12.28Heavy Weather Jib33.15
SAIL LIMITS
Headsails7  Spinnakers5
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  03390002EPAIssued on 28/03/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

CRESCENT IV

JPN 6860

JAPAN SAILING FEDERATION
4-2, Kasumigaokacho,
Shinjuku, Tokyo
Japan
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG923.7750.2661.1616.3597.4586.6576.0
52°608.2509.5466.4447.2436.7430.7423.8
60°578.2492.4456.0437.8425.5418.3409.9
75°560.5482.6449.2429.3413.7401.3387.7
90°573.4478.6443.8428.6410.9395.5369.5
110°562.8469.1431.5406.2387.2374.1350.3
120°576.7475.6434.0405.5381.2358.8326.8
135°643.5513.3453.7420.8392.1365.2309.1
150°761.9600.0506.9455.4429.3406.6355.4
Run VMG879.7692.8585.3525.3495.8469.5410.4
Selected Courses
Windward / Leeward901.7721.5623.2570.8546.6528.1493.2
All purpose696.6568.2505.2471.6451.5435.7408.3
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward599.91.0002
All purpose488.41.2284
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low632.40.9488
Triple Number Coastal/Long Distance Medium485.81.2351
Triple Number Coastal/Long Distance High429.41.3974
Triple Number Windward/Leeward Low811.60.7393
Triple Number Windward/Leeward Medium594.81.0088
Triple Number Windward/Leeward High519.61.1547
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance530.61.1309
Triple Number Coastal/Long Distance Low632.40.9488
Triple Number Coastal/Long Distance Medium485.81.2351
Triple Number Coastal/Long Distance High429.41.3974
Triple Number Windward/Leeward Low811.60.7393
Triple Number Windward/Leeward Medium594.81.0088
Triple Number Windward/Leeward High519.61.1547
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance899.5679.5565.3501.4468.3440.0392.3
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8915
Downwind "popa"1.0348
70% up, 30% down "Ilhabela"0.9301
30% up, 70% down "Ilhabela-inverso"0.9872
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low632.40.9488
Triple Number Coastal/Long Distance Medium485.81.2351
Triple Number Coastal/Long Distance High429.41.3974
Triple Number Windward/Leeward Low811.60.7393
Triple Number Windward/Leeward Medium594.81.0088
Triple Number Windward/Leeward High519.61.1547
Predominantly Upwind526.51.1396
Predominantly Downwind498.41.2038
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low632.40.9488
Triple Number All Purpose Medium485.81.2351
Triple Number All Purpose High429.41.3974
Triple Number Windward/Leeward Low811.60.7393
Triple Number Windward/Leeward Medium594.81.0088
Triple Number Windward/Leeward High519.61.1547
Predominantly Upwind526.51.1396
Predominantly Downwind498.41.2038
Predominantly Upwind Low703.60.8528
Predominantly Upwind Medium541.11.1088
Predominantly Upwind High497.21.2067
Predominantly Downwind Low689.20.8706
Predominantly Downwind Medium496.41.2086
Predominantly Downwind High415.11.4455
Chicago-Mac Upwind1.1193
Chicago-Mac All Purpose1.1474
Chicago-Mac Downwind1.1835
Bayview-Mac Cove Island1.0619
Bayview-Mac Shore1.0734
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching466.21.2870
Predominantly Reaching Low573.81.0456
Predominantly Reaching Medium462.41.2975
Predominantly Reaching High400.81.4969
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low887.80.6758
5-Band Low / Medium739.50.8114
5-Band Medium584.51.0265
5-Band Medium / High528.91.1345
5-Band High499.21.2019
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance530.61.1309
Triple Number Coastal/Long Distance Low632.40.9488
Triple Number Coastal/Long Distance Medium485.81.2351
Triple Number Coastal/Long Distance High429.41.3974
Triple Number Windward/Leeward Low811.60.7393
Triple Number Windward/Leeward Medium594.81.0088
Triple Number Windward/Leeward High519.61.1547
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance899.5679.5565.3501.4468.3440.0392.3
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance530.61.1309
Triple Number Coastal/Long Distance Low632.40.9488
Triple Number Coastal/Long Distance Medium485.81.2351
Triple Number Coastal/Long Distance High429.41.3974
Triple Number Windward/Leeward Low811.60.7393
Triple Number Windward/Leeward Medium594.81.0088
Triple Number Windward/Leeward High519.61.1547
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance899.5679.5565.3501.4468.3440.0392.3
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance530.6
Triple Number Coastal/Long Distance Low632.4
Triple Number Coastal/Long Distance Medium485.8
Triple Number Coastal/Long Distance High429.4
Triple Number Windward/Leeward Low811.6
Triple Number Windward/Leeward Medium594.8
Triple Number Windward/Leeward High519.6
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance899.5679.5565.3501.4468.3440.0392.3
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance530.61.1309
Triple Number Coastal/Long Distance Low632.40.9488
Triple Number Coastal/Long Distance Medium485.81.2351
Triple Number Coastal/Long Distance High429.41.3974
Triple Number Windward/Leeward Low811.60.7393
Triple Number Windward/Leeward Medium594.81.0088
Triple Number Windward/Leeward High519.61.1547
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance899.5679.5565.3501.4468.3440.0392.3
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)530.61.1309
Triple Number Coastal/Long Distance Low632.40.9488
Triple Number Coastal/Long Distance Medium485.81.2351
Triple Number Coastal/Long Distance High429.41.3974
Triple Number Windward/Leeward Low811.60.7393
Triple Number Windward/Leeward Medium594.81.0088
Triple Number Windward/Leeward High519.61.1547
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance899.5679.5565.3501.4468.3440.0392.3
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low632.40.9488
Triple Number Coastal/Long Distance Medium485.81.2351
Triple Number Coastal/Long Distance High429.41.3974
Triple Number Windward/Leeward Low811.60.7393
Triple Number Windward/Leeward Medium594.81.0088
Triple Number Windward/Leeward High519.61.1547
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9488
Triple Number Coastal/Long Distance Medium1.2351
Triple Number Coastal/Long Distance High1.3974
Triple Number Windward/Leeward Low0.7393
Triple Number Windward/Leeward Medium1.0088
Triple Number Windward/Leeward High1.1547
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance899.5679.5565.3501.4468.3440.0392.3
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance530.61.1309
Triple Number Coastal/Long Distance Low632.40.9488
Triple Number Coastal/Long Distance Medium485.81.2351
Triple Number Coastal/Long Distance High429.41.3974
Triple Number Windward/Leeward Low811.60.7393
Triple Number Windward/Leeward Medium594.81.0088
Triple Number Windward/Leeward High519.61.1547
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance899.5679.5565.3501.4468.3440.0392.3
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low632.40.9488
Triple Number Coastal/Long Distance Medium485.81.2351
Triple Number Coastal/Long Distance High429.41.3974
Triple Number Windward/Leeward Low811.60.7393
Triple Number Windward/Leeward Medium594.81.0088
Triple Number Windward/Leeward High519.61.1547
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance530.61.1309
Triple Number Coastal/Long Distance Low632.40.9488
Triple Number Coastal/Long Distance Medium485.81.2351
Triple Number Coastal/Long Distance High429.41.3974
Triple Number Windward/Leeward Low811.60.7393
Triple Number Windward/Leeward Medium594.81.0088
Triple Number Windward/Leeward High519.61.1547
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance899.5679.5565.3501.4468.3440.0392.3
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low811.60.7393
Triple Number Windward/Leeward Medium594.81.0088
Triple Number Windward/Leeward High519.61.1547
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance899.5679.5565.3501.4468.3440.0392.3
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low632.4
Triple Number Coastal/Long Distance Medium485.8
Triple Number Coastal/Long Distance High429.4
Triple Number Windward/Leeward Low811.6
Triple Number Windward/Leeward Medium594.8
Triple Number Windward/Leeward High519.6
Predominantly Upwind526.5
Predominantly Downwind498.4
Predominantly Reaching477.6
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance530.61.1309
Triple Number Coastal/Long Distance Low632.40.9488
Triple Number Coastal/Long Distance Medium485.81.2351
Triple Number Coastal/Long Distance High429.41.3974
Triple Number Windward/Leeward Low811.60.7393
Triple Number Windward/Leeward Medium594.81.0088
Triple Number Windward/Leeward High519.61.1547
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance899.5679.5565.3501.4468.3440.0392.3
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9488
Triple Number Coastal/Long Distance Medium1.2351
Triple Number Coastal/Long Distance High1.3974
Triple Number Windward/Leeward Low0.7393
Triple Number Windward/Leeward Medium1.0088
Triple Number Windward/Leeward High1.1547
Coastal/Long Distance1.1309
Predominantly Upwind1.1396
Predominantly Downwind1.2038
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.9488
Tretall Distanseseilas Mellomvind1.2351
Tretall Distanseseilas Mye vind1.3974
Tretall Pølsebane Lite vind0.7393
Tretall Pølsebane Mellomvind1.0088
Tretall Pølsebane Mye vind1.1547
Distanseseilas ett tall (OSN 8-16kn)1.1309
Distanseseilas ett tall (APH 6-20kn)1.2284
Enkeltall Motvind1.1396
Enkeltall Medvind1.2038
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low632.40.9488
Triple Number Coastal/Long Distance Medium485.81.2351
Triple Number Coastal/Long Distance High429.41.3974
Triple Number Windward/Leeward Low811.60.7393
Triple Number Windward/Leeward Medium594.81.0088
Triple Number Windward/Leeward High519.61.1547
Coastal/Long Distance530.61.1309
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind526.51.1396
Predominantly Downwind498.41.2038
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore503.61.1913
Cape Doctor Coastal416.51.4406
Triple Number Coastal/Long Distance Low632.40.9488
Triple Number Coastal/Long Distance Medium485.81.2351
Triple Number Coastal/Long Distance High429.41.3974
Triple Number Windward/Leeward Low811.60.7393
Triple Number Windward/Leeward Medium594.81.0088
Triple Number Windward/Leeward High519.61.1547
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9488
Triple Number Coastal/Long Distance Medium1.2351
Triple Number Coastal/Long Distance High1.3974
Triple Number Windward/Leeward Low0.7393
Triple Number Windward/Leeward Medium1.0088
Triple Number Windward/Leeward High1.1547
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9488
Triple Number Coastal/Long Distance Medium1.2351
Triple Number Coastal/Long Distance High1.3974
Triple Number Windward/Leeward Low0.7393
Triple Number Windward/Leeward Medium1.0088
Triple Number Windward/Leeward High1.1547
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance530.61.1309
Triple Number Coastal/Long Distance Low632.40.9488
Triple Number Coastal/Long Distance Medium485.81.2351
Triple Number Coastal/Long Distance High429.41.3974
Triple Number Windward/Leeward Low811.60.7393
Triple Number Windward/Leeward Medium594.81.0088
Triple Number Windward/Leeward High519.61.1547
Predominantly Upwind526.51.1396
Predominantly Downwind498.41.2038
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance899.5679.5565.3501.4468.3440.0392.3
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance530.61.1309
Triple Number Coastal/Long Distance Low632.40.9488
Triple Number Coastal/Long Distance Medium485.81.2351
Triple Number Coastal/Long Distance High429.41.3974
Triple Number Windward/Leeward Low811.60.7393
Triple Number Windward/Leeward Medium594.81.0088
Triple Number Windward/Leeward High519.61.1547
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance899.5679.5565.3501.4468.3440.0392.3
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low632.40.9488
Triple Number All Purpose Medium485.81.2351
Triple Number All Purpose High429.41.3974
Triple Number Windward/Leeward Low811.60.7393
Triple Number Windward/Leeward Medium594.81.0088
Triple Number Windward/Leeward High519.61.1547
Predominantly Upwind526.51.1396
Predominantly Downwind498.41.2038
Predominantly Upwind Low703.60.8528
Predominantly Upwind Medium541.11.1088
Predominantly Upwind High497.21.2067
Predominantly Downwind Low689.20.8706
Predominantly Downwind Medium496.41.2086
Predominantly Downwind High415.11.4455
Chicago-Mac Upwind1.1193
Chicago-Mac All Purpose1.1474
Chicago-Mac Downwind1.1835
Bayview-Mac Cove Island1.0619
Bayview-Mac Shore1.0734
Harvest Moon Regatta425.61.4097
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy502.21.1948
San Francisco Bay Medium586.11.0237
Predominantly Reaching466.21.2870
Predominantly Reaching Low573.81.0456
Predominantly Reaching Medium462.41.2975
Predominantly Reaching High400.81.4969
Windward/Leeward 60-40 Low816.70.7347
Windward/Leeward 60-40 Medium609.40.9846
Windward/Leeward 60-40 High542.01.1071
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low887.80.6758
5-Band Low / Medium739.50.8114
5-Band Medium584.51.0265
5-Band Medium / High528.91.1345
5-Band High499.21.2019
ORC Ref  03390002EPAIssued on 28/03/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

CRESCENT IV

JPN 6860

JAPAN SAILING FEDERATION
4-2, Kasumigaokacho,
Shinjuku, Tokyo
Japan
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ 121Measurement13/07/2021HINPlan reviewHull constructionCoredCarbon RudderNoLight stanchionsNoTrim tabNo
LOA12.190Max. Beam3.754Draft2.541Displacement6,400Wetted area30.72IMS L11.754LSM011.367Acc. length12.190Sink (kg/mm) 23.74
VCGD-0.194VCGM-0.160RM Rated (kg·m) 197.9Limit of positive stability(°) N/AStability IndexN/ABLR index1.1408
Water ballast weight379Water ballast LCG8.30Water ballast VCG0.51Water ballast TCG1.54
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.440PBWPIPA0.0008
EDLST1ST2
ST3ST4ST5
RIG
Forestay tensionAftInner stayNone FittedCarbon mastYesHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders2Rotating mastNo
P15.240IG15.670ISP17.001MDT10.115MDL10.236MDT2MDL2TLTaperMWGO
E5.070J4.680BAS1.532FSDFoilSFJ0.110SPLWPLTPS7.090BDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodBoom incliningFlotation Date13/07/2019MeasurerComment
SFFP1.000FFMFF1.249LCFcl6.591SG1.0250
SAFP12.149FAMFA0.968LCFsh6.866HBI1.135
W1103.9W2103.9W3103.9W4103.9LCFD
PD1208.9PD2209.5PD3212.0PD4201.7
WD5.000PLM9000.00GSA1.0RSA1.0RM196.7
TANKS
INVENTORY
INVENTORY
BALLASTIdKindDescriptionWeightLCGVCGTCG1Movable3798.300.511.54Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03390002EPAIssued on 28/03/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

CRESCENT IV

JPN 6860

JAPAN SAILING FEDERATION
4-2, Kasumigaokacho,
Shinjuku, Tokyo
Japan
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentMN_230.581.282.083.284.2547.2828/02/2023
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentLM_230.090.741.402.613.804.9815.73YesNo 40.5227/10/2022
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentA2_2319.1516.0217.5910.3810.43100%152.2625/11/2022
ORC Ref  03390002EPAIssued on 28/03/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org