Club
Certificate
2023

Boat

Rooster

CAY 28

Hungarian Yachting Association
Istvanmezei ut 1-3
H-1146 Budapest
HUNGARY
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat Angles42.6°39.9°38.1°37.2°37.0°37.0°38.2°
Beat VMG3.974.765.145.315.405.465.50
52°6.036.917.417.697.898.048.19
60°6.337.157.808.158.398.588.83
75°6.517.358.248.859.269.5810.06
90°6.477.388.209.2810.0410.5811.36
110°6.547.658.729.5810.3110.9712.99
120°6.337.488.749.9310.9011.7413.24
135°5.696.917.989.3610.8612.3814.88
150°4.786.046.997.969.1910.6214.08
Run VMG4.145.236.066.897.969.1912.19
Gybe Angles142.4°146.9°151.4°147.8°144.2°142.0°145.3°

APH: 484.4

CDL: 9.023

GPH: 545.1

CertNo: 036/23

BOAT
ClassCayman 28DesignerMark MillsBuilderCode YachtsAge date07/2023Series date07/2023Offset filecayman28.offData fileCAY28
HULL
Length Overall8.530 mMaximum Beam2.494 mDraft1.927 mDisplacement1,168 kgDLR2.4040IMS DivisionSportboatDynamic Allowance0.000%Age Allowance0.000%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.325m
CREW
Maximum weight400 kgMinimum weight300 kg * when appliedNon Manual PowerNoCrew Arm Extension1.19 m
SAIL AREAS (m²)
MeasuredRatedMainsail29.5230.48Headsail Luffed19.6319.63Headsail FlyingSymmetricAsymmetric78.1278.12 (3 asymmetric(s) with SHW/SFL < 85%)
STORM SAIL AREAS (m²)
Trysail7.47Storm Jib5.31Heavy Weather Jib14.33
SAIL LIMITS
Headsails5  Spinnakers4
STABILITY
Righting MomentN/AStability IndexN/A
COMMENTS
Hull width racks in 2,530 hull width racks extended: 3,9m Lombardini 10 hp, strut drive Gori folding 2 blade, 13x9 LHS
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  03880002RT0Issued on 29/08/2023Valid until 31/12/2023
VPP ver: 2023 1.03 | © ORC | www.orc.org

Club
Certificate
2023

Boat

Rooster

CAY 28

Hungarian Yachting Association
Istvanmezei ut 1-3
H-1146 Budapest
HUNGARY
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG907.4756.0700.0678.0666.4659.4654.7
52°597.1520.8486.1468.1456.5447.9439.8
60°568.4503.6461.5442.0429.0419.4407.9
75°552.8489.9436.9406.6388.8376.0357.8
90°556.3487.7439.3387.9358.4340.2316.9
110°550.8470.5412.9375.9349.2328.3277.2
120°569.0481.4411.9362.5330.2306.8271.9
135°632.6520.9451.3384.5331.5290.7241.9
150°753.3595.8515.2452.4391.8339.1255.8
Run VMG869.8688.0594.2522.4452.5391.5295.3
Selected Courses
Windward / Leeward888.6722.0647.1600.2559.4525.5475.0
All purpose684.9572.6512.9471.8440.7416.4380.5
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward614.30.9767
All purpose484.41.2386
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low628.70.9543
Triple Number Coastal/Long Distance Medium486.11.2343
Triple Number Coastal/Long Distance High409.01.4670
Triple Number Windward/Leeward Low805.30.7451
Triple Number Windward/Leeward Medium615.80.9743
Triple Number Windward/Leeward High515.11.1649
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance529.31.1335
Triple Number Coastal/Long Distance Low628.70.9543
Triple Number Coastal/Long Distance Medium486.11.2343
Triple Number Coastal/Long Distance High409.01.4670
Triple Number Windward/Leeward Low805.30.7451
Triple Number Windward/Leeward Medium615.80.9743
Triple Number Windward/Leeward High515.11.1649
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance886.7681.0580.2509.1459.6418.2353.9
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8363
Downwind "popa"1.1013
70% up, 30% down "Ilhabela"0.9014
30% up, 70% down "Ilhabela-inverso"1.0057
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low628.70.9543
Triple Number Coastal/Long Distance Medium486.11.2343
Triple Number Coastal/Long Distance High409.01.4670
Triple Number Windward/Leeward Low805.30.7451
Triple Number Windward/Leeward Medium615.80.9743
Triple Number Windward/Leeward High515.11.1649
Predominantly Upwind539.11.1129
Predominantly Downwind481.81.2453
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low628.70.9543
Triple Number All Purpose Medium486.11.2343
Triple Number All Purpose High409.01.4670
Triple Number Windward/Leeward Low805.30.7451
Triple Number Windward/Leeward Medium615.80.9743
Triple Number Windward/Leeward High515.11.1649
Predominantly Upwind539.11.1129
Predominantly Downwind481.81.2453
Predominantly Upwind Low699.90.8573
Predominantly Upwind Medium566.81.0586
Predominantly Upwind High526.51.1396
Predominantly Downwind Low684.20.8770
Predominantly Downwind Medium481.51.2462
Predominantly Downwind High348.51.7216
Chicago-Mac Upwind1.0919
Chicago-Mac All Purpose1.1507
Chicago-Mac Downwind1.2137
Bayview-Mac Cove Island1.0738
Bayview-Mac Shore1.0831
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching451.21.3299
Predominantly Reaching Low572.41.0483
Predominantly Reaching Medium452.41.3263
Predominantly Reaching High361.31.6605
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low875.80.6851
5-Band Low / Medium743.10.8075
5-Band Medium605.00.9917
5-Band Medium / High529.01.1342
5-Band High483.71.2404
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance529.31.1335
Triple Number Coastal/Long Distance Low628.70.9543
Triple Number Coastal/Long Distance Medium486.11.2343
Triple Number Coastal/Long Distance High409.01.4670
Triple Number Windward/Leeward Low805.30.7451
Triple Number Windward/Leeward Medium615.80.9743
Triple Number Windward/Leeward High515.11.1649
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance886.7681.0580.2509.1459.6418.2353.9
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance529.31.1335
Triple Number Coastal/Long Distance Low628.70.9543
Triple Number Coastal/Long Distance Medium486.11.2343
Triple Number Coastal/Long Distance High409.01.4670
Triple Number Windward/Leeward Low805.30.7451
Triple Number Windward/Leeward Medium615.80.9743
Triple Number Windward/Leeward High515.11.1649
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance886.7681.0580.2509.1459.6418.2353.9
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance529.3
Triple Number Coastal/Long Distance Low628.7
Triple Number Coastal/Long Distance Medium486.1
Triple Number Coastal/Long Distance High409.0
Triple Number Windward/Leeward Low805.3
Triple Number Windward/Leeward Medium615.8
Triple Number Windward/Leeward High515.1
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance886.7681.0580.2509.1459.6418.2353.9
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance529.31.1335
Triple Number Coastal/Long Distance Low628.70.9543
Triple Number Coastal/Long Distance Medium486.11.2343
Triple Number Coastal/Long Distance High409.01.4670
Triple Number Windward/Leeward Low805.30.7451
Triple Number Windward/Leeward Medium615.80.9743
Triple Number Windward/Leeward High515.11.1649
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance886.7681.0580.2509.1459.6418.2353.9
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)529.31.1335
Triple Number Coastal/Long Distance Low628.70.9543
Triple Number Coastal/Long Distance Medium486.11.2343
Triple Number Coastal/Long Distance High409.01.4670
Triple Number Windward/Leeward Low805.30.7451
Triple Number Windward/Leeward Medium615.80.9743
Triple Number Windward/Leeward High515.11.1649
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance886.7681.0580.2509.1459.6418.2353.9
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low628.70.9543
Triple Number Coastal/Long Distance Medium486.11.2343
Triple Number Coastal/Long Distance High409.01.4670
Triple Number Windward/Leeward Low805.30.7451
Triple Number Windward/Leeward Medium615.80.9743
Triple Number Windward/Leeward High515.11.1649
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9543
Triple Number Coastal/Long Distance Medium1.2343
Triple Number Coastal/Long Distance High1.4670
Triple Number Windward/Leeward Low0.7451
Triple Number Windward/Leeward Medium0.9743
Triple Number Windward/Leeward High1.1649
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance886.7681.0580.2509.1459.6418.2353.9
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance529.31.1335
Triple Number Coastal/Long Distance Low628.70.9543
Triple Number Coastal/Long Distance Medium486.11.2343
Triple Number Coastal/Long Distance High409.01.4670
Triple Number Windward/Leeward Low805.30.7451
Triple Number Windward/Leeward Medium615.80.9743
Triple Number Windward/Leeward High515.11.1649
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance886.7681.0580.2509.1459.6418.2353.9
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low628.70.9543
Triple Number Coastal/Long Distance Medium486.11.2343
Triple Number Coastal/Long Distance High409.01.4670
Triple Number Windward/Leeward Low805.30.7451
Triple Number Windward/Leeward Medium615.80.9743
Triple Number Windward/Leeward High515.11.1649
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance529.31.1335
Triple Number Coastal/Long Distance Low628.70.9543
Triple Number Coastal/Long Distance Medium486.11.2343
Triple Number Coastal/Long Distance High409.01.4670
Triple Number Windward/Leeward Low805.30.7451
Triple Number Windward/Leeward Medium615.80.9743
Triple Number Windward/Leeward High515.11.1649
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance886.7681.0580.2509.1459.6418.2353.9
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low805.30.7451
Triple Number Windward/Leeward Medium615.80.9743
Triple Number Windward/Leeward High515.11.1649
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance886.7681.0580.2509.1459.6418.2353.9
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low628.7
Triple Number Coastal/Long Distance Medium486.1
Triple Number Coastal/Long Distance High409.0
Triple Number Windward/Leeward Low805.3
Triple Number Windward/Leeward Medium615.8
Triple Number Windward/Leeward High515.1
Predominantly Upwind539.1
Predominantly Downwind481.8
Predominantly Reaching460.0
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance529.31.1335
Triple Number Coastal/Long Distance Low628.70.9543
Triple Number Coastal/Long Distance Medium486.11.2343
Triple Number Coastal/Long Distance High409.01.4670
Triple Number Windward/Leeward Low805.30.7451
Triple Number Windward/Leeward Medium615.80.9743
Triple Number Windward/Leeward High515.11.1649
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance886.7681.0580.2509.1459.6418.2353.9
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9543
Triple Number Coastal/Long Distance Medium1.2343
Triple Number Coastal/Long Distance High1.4670
Triple Number Windward/Leeward Low0.7451
Triple Number Windward/Leeward Medium0.9743
Triple Number Windward/Leeward High1.1649
Coastal/Long Distance1.1335
Predominantly Upwind1.1129
Predominantly Downwind1.2453
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.9543
Tretall Distanseseilas Mellomvind1.2343
Tretall Distanseseilas Mye vind1.4670
Tretall Pølsebane Lite vind0.7451
Tretall Pølsebane Mellomvind0.9743
Tretall Pølsebane Mye vind1.1649
Distanseseilas ett tall (OSN 8-16kn)1.1335
Distanseseilas ett tall (APH 6-20kn)1.2386
Enkeltall Motvind1.1129
Enkeltall Medvind1.2453
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low628.70.9543
Triple Number Coastal/Long Distance Medium486.11.2343
Triple Number Coastal/Long Distance High409.01.4670
Triple Number Windward/Leeward Low805.30.7451
Triple Number Windward/Leeward Medium615.80.9743
Triple Number Windward/Leeward High515.11.1649
Coastal/Long Distance529.31.1335
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind539.11.1129
Predominantly Downwind481.81.2453
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore490.11.2241
Cape Doctor Coastal391.31.5335
Triple Number Coastal/Long Distance Low628.70.9543
Triple Number Coastal/Long Distance Medium486.11.2343
Triple Number Coastal/Long Distance High409.01.4670
Triple Number Windward/Leeward Low805.30.7451
Triple Number Windward/Leeward Medium615.80.9743
Triple Number Windward/Leeward High515.11.1649
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9543
Triple Number Coastal/Long Distance Medium1.2343
Triple Number Coastal/Long Distance High1.4670
Triple Number Windward/Leeward Low0.7451
Triple Number Windward/Leeward Medium0.9743
Triple Number Windward/Leeward High1.1649
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9543
Triple Number Coastal/Long Distance Medium1.2343
Triple Number Coastal/Long Distance High1.4670
Triple Number Windward/Leeward Low0.7451
Triple Number Windward/Leeward Medium0.9743
Triple Number Windward/Leeward High1.1649
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance529.31.1335
Triple Number Coastal/Long Distance Low628.70.9543
Triple Number Coastal/Long Distance Medium486.11.2343
Triple Number Coastal/Long Distance High409.01.4670
Triple Number Windward/Leeward Low805.30.7451
Triple Number Windward/Leeward Medium615.80.9743
Triple Number Windward/Leeward High515.11.1649
Predominantly Upwind539.11.1129
Predominantly Downwind481.81.2453
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance886.7681.0580.2509.1459.6418.2353.9
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance529.31.1335
Triple Number Coastal/Long Distance Low628.70.9543
Triple Number Coastal/Long Distance Medium486.11.2343
Triple Number Coastal/Long Distance High409.01.4670
Triple Number Windward/Leeward Low805.30.7451
Triple Number Windward/Leeward Medium615.80.9743
Triple Number Windward/Leeward High515.11.1649
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance886.7681.0580.2509.1459.6418.2353.9
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low628.70.9543
Triple Number All Purpose Medium486.11.2343
Triple Number All Purpose High409.01.4670
Triple Number Windward/Leeward Low805.30.7451
Triple Number Windward/Leeward Medium615.80.9743
Triple Number Windward/Leeward High515.11.1649
Predominantly Upwind539.11.1129
Predominantly Downwind481.81.2453
Predominantly Upwind Low699.90.8573
Predominantly Upwind Medium566.81.0586
Predominantly Upwind High526.51.1396
Predominantly Downwind Low684.20.8770
Predominantly Downwind Medium481.51.2462
Predominantly Downwind High348.51.7216
Chicago-Mac Upwind1.0919
Chicago-Mac All Purpose1.1507
Chicago-Mac Downwind1.2137
Bayview-Mac Cove Island1.0738
Bayview-Mac Shore1.0831
Harvest Moon Regatta388.01.5465
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy502.41.1944
San Francisco Bay Medium599.31.0011
Predominantly Reaching451.21.3299
Predominantly Reaching Low572.41.0483
Predominantly Reaching Medium452.41.3263
Predominantly Reaching High361.31.6605
Windward/Leeward 60-40 Low810.60.7402
Windward/Leeward 60-40 Medium640.70.9365
Windward/Leeward 60-40 High564.21.0635
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low875.80.6851
5-Band Low / Medium743.10.8075
5-Band Medium605.00.9917
5-Band Medium / High529.01.1342
5-Band High483.71.2404
ORC Ref  03880002RT0Issued on 29/08/2023Valid until 31/12/2023
VPP ver: 2023 1.03 | © ORC | www.orc.org

Club
Certificate
2023

Boat

Rooster

CAY 28

Hungarian Yachting Association
Istvanmezei ut 1-3
H-1146 Budapest
HUNGARY
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassCayman 28Measurement16/08/2023HINPlan reviewHull constructionCarbonCarbon RudderYesLight stanchionsNoTrim tabNo
LOA8.530Max. Beam2.494Draft1.927Displacement1,168Wetted area12.80IMS L8.345LSM07.861Acc. length8.105Sink (kg/mm) 10.69
VCGD-0.486VCGM-0.415RM Rated (kg·m) 39.9Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.325PBW0.080PIPA0.0027
EDL0.435ST10.042ST20.135
ST30.135ST40.088ST50.330
RIG
Forestay tensionForwardInner stayNone FittedCarbon mastYesHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders2Rotating mastNo
P10.670IG10.700ISP11.950MDT10.090MDL10.131MDT20.076MDL20.112TL1.160MW0.131GO0.000
E4.000J3.370BAS1.020FSDNo FoilSFJ0.900SPLWPLTPS6.125BD0.131MWT54.00MCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date16/08/2023MeasurerComment
SFFP0.502FFMFF0.608LCFcl4.807SG
SAFP8.530FAMFA0.581LCFsh4.955HBI0.745
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03880002RT0Issued on 29/08/2023Valid until 31/12/2023
VPP ver: 2023 1.03 | © ORC | www.orc.org

Club
Certificate
2023

Boat

Rooster

CAY 28

Hungarian Yachting Association
Istvanmezei ut 1-3
H-1146 Budapest
HUNGARY
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment11.411.622.152.853.4429.5201/08/2023
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment10.110.571.041.882.653.3810.82YesNo 19.6301/08/2023
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment013.7611.1812.477.208.7982%78.1201/08/2023213.6311.1112.377.178.7482%77.1501/08/2023113.4010.4711.946.547.8883%67.7101/08/2023
ORC Ref  03880002RT0Issued on 29/08/2023Valid until 31/12/2023
VPP ver: 2023 1.03 | © ORC | www.orc.org