International
Certificate
2023

Boat

SILVER SURFER

USA 7

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 Angles42.6°40.6°39.0°37.8°37.8°37.6°38.2°
Beat VMG3.684.484.995.235.345.405.42
52°5.596.597.137.377.487.557.61
60°5.886.827.317.567.697.777.85
75°6.207.107.467.757.978.128.29
90°6.467.337.758.018.198.378.73
110°6.317.287.808.248.628.989.57
120°6.057.187.788.278.709.1410.12
135°5.446.737.518.048.589.1510.66
150°4.615.826.817.477.868.229.32
Run VMG4.005.045.906.476.817.248.07
Gybe Angles143.9°147.4°149.6°150.7°149.8°173.0°142.8°

APH: 526.3

CDL: 9.719

GPH: 586.9

CertNo: US7455

BOAT
ClassJ 112EDesignerAl JohnstoneBuilderJ/CompositesAge date01/2016Series date08/2015Offset fileJ112.offData fileUS6823
HULL
Length Overall11.000 mMaximum Beam3.598 mDraft2.090 mDisplacement5,294 kgDLR5.7157IMS DivisionCruiser/RacerDynamic Allowance0.140%Age Allowance0.260%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.413m
CREW
Maximum weight525 kgMinimum weight394 kg * when appliedNon Manual PowerNoCrew Arm Extension0.00 m
SAIL AREAS (m²)
MeasuredRatedMainsail39.0739.83Headsail Luffed34.3734.37Headsail FlyingSymmetricAsymmetric130.58130.58 (2 asymmetric(s) with SHW/SFL < 85%)
STORM SAIL AREAS (m²)
Trysail11.46Storm Jib10.94Heavy Weather Jib29.52
SAIL LIMITS
Headsails5  Spinnakers4
STABILITY
Righting Moment135.7 kg·mStability Index121.5
COMMENTS
Cushions on board
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  04560002T4VIssued on 18/10/2023Valid until 27/02/2024
VPP ver: 2023 1.03 | © ORC | www.orc.org

International
Certificate
2023

Boat

SILVER SURFER

USA 7

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 VMG979.0804.1720.9688.8674.3666.8664.4
52°643.5546.0504.7488.3481.1476.8473.3
60°611.8527.7492.2476.1468.1463.2458.5
75°580.8507.1482.8464.5451.7443.3434.3
90°557.1490.8464.4449.2439.4430.1412.5
110°570.7494.6461.3437.1417.5400.9376.2
120°595.2501.3462.5435.5413.7393.9355.7
135°661.4534.8479.6447.7419.8393.2337.8
150°780.2618.7528.3482.0458.1437.8386.2
Run VMG900.9714.4610.1556.2528.9497.2446.0
Selected Courses
Windward / Leeward940.0759.3665.5622.5601.6582.0555.2
All purpose721.0598.0539.4510.5493.4479.1455.4
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward649.10.9244
All purpose526.31.1401
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low659.50.9098
Triple Number Coastal/Long Distance Medium523.21.1468
Triple Number Coastal/Long Distance High473.81.2664
Triple Number Windward/Leeward Low849.60.7062
Triple Number Windward/Leeward Medium643.00.9331
Triple Number Windward/Leeward High576.91.0401
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance571.81.0494
Triple Number Coastal/Long Distance Low659.50.9098
Triple Number Coastal/Long Distance Medium523.21.1468
Triple Number Coastal/Long Distance High473.81.2664
Triple Number Windward/Leeward Low849.60.7062
Triple Number Windward/Leeward Medium643.00.9331
Triple Number Windward/Leeward High576.91.0401
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.1714.3603.2544.0512.7484.7435.7
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8079
Downwind "popa"0.9874
70% up, 30% down "Ilhabela"0.8545
30% up, 70% down "Ilhabela-inverso"0.9257
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low659.50.9098
Triple Number Coastal/Long Distance Medium523.21.1468
Triple Number Coastal/Long Distance High473.81.2664
Triple Number Windward/Leeward Low849.60.7062
Triple Number Windward/Leeward Medium643.00.9331
Triple Number Windward/Leeward High576.91.0401
Predominantly Upwind570.31.0520
Predominantly Downwind528.71.1348
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low659.50.9098
Triple Number All Purpose Medium523.21.1468
Triple Number All Purpose High473.81.2664
Triple Number Windward/Leeward Low849.60.7062
Triple Number Windward/Leeward Medium643.00.9331
Triple Number Windward/Leeward High576.91.0401
Predominantly Upwind570.31.0520
Predominantly Downwind528.71.1348
Predominantly Upwind Low740.90.8098
Predominantly Upwind Medium591.51.0144
Predominantly Upwind High558.81.0737
Predominantly Downwind Low712.50.8421
Predominantly Downwind Medium525.01.1428
Predominantly Downwind High448.41.3379
Chicago-Mac Upwind1.0345
Chicago-Mac All Purpose1.0726
Chicago-Mac Downwind1.1169
Bayview-Mac Cove Island1.0019
Bayview-Mac Shore1.0066
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching496.51.2085
Predominantly Reaching Low591.81.0138
Predominantly Reaching Medium491.31.2213
Predominantly Reaching High437.91.3701
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low926.00.6479
5-Band Low / Medium779.30.7699
5-Band Medium634.20.9461
5-Band Medium / High584.31.0269
5-Band High559.81.0718
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance571.81.0494
Triple Number Coastal/Long Distance Low659.50.9098
Triple Number Coastal/Long Distance Medium523.21.1468
Triple Number Coastal/Long Distance High473.81.2664
Triple Number Windward/Leeward Low849.60.7062
Triple Number Windward/Leeward Medium643.00.9331
Triple Number Windward/Leeward High576.91.0401
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.1714.3603.2544.0512.7484.7435.7
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance571.81.0494
Triple Number Coastal/Long Distance Low659.50.9098
Triple Number Coastal/Long Distance Medium523.21.1468
Triple Number Coastal/Long Distance High473.81.2664
Triple Number Windward/Leeward Low849.60.7062
Triple Number Windward/Leeward Medium643.00.9331
Triple Number Windward/Leeward High576.91.0401
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.1714.3603.2544.0512.7484.7435.7
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance571.8
Triple Number Coastal/Long Distance Low659.5
Triple Number Coastal/Long Distance Medium523.2
Triple Number Coastal/Long Distance High473.8
Triple Number Windward/Leeward Low849.6
Triple Number Windward/Leeward Medium643.0
Triple Number Windward/Leeward High576.9
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.1714.3603.2544.0512.7484.7435.7
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance571.81.0494
Triple Number Coastal/Long Distance Low659.50.9098
Triple Number Coastal/Long Distance Medium523.21.1468
Triple Number Coastal/Long Distance High473.81.2664
Triple Number Windward/Leeward Low849.60.7062
Triple Number Windward/Leeward Medium643.00.9331
Triple Number Windward/Leeward High576.91.0401
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.1714.3603.2544.0512.7484.7435.7
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)571.81.0494
Triple Number Coastal/Long Distance Low659.50.9098
Triple Number Coastal/Long Distance Medium523.21.1468
Triple Number Coastal/Long Distance High473.81.2664
Triple Number Windward/Leeward Low849.60.7062
Triple Number Windward/Leeward Medium643.00.9331
Triple Number Windward/Leeward High576.91.0401
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.1714.3603.2544.0512.7484.7435.7
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low659.50.9098
Triple Number Coastal/Long Distance Medium523.21.1468
Triple Number Coastal/Long Distance High473.81.2664
Triple Number Windward/Leeward Low849.60.7062
Triple Number Windward/Leeward Medium643.00.9331
Triple Number Windward/Leeward High576.91.0401
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9098
Triple Number Coastal/Long Distance Medium1.1468
Triple Number Coastal/Long Distance High1.2664
Triple Number Windward/Leeward Low0.7062
Triple Number Windward/Leeward Medium0.9331
Triple Number Windward/Leeward High1.0401
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.1714.3603.2544.0512.7484.7435.7
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance571.81.0494
Triple Number Coastal/Long Distance Low659.50.9098
Triple Number Coastal/Long Distance Medium523.21.1468
Triple Number Coastal/Long Distance High473.81.2664
Triple Number Windward/Leeward Low849.60.7062
Triple Number Windward/Leeward Medium643.00.9331
Triple Number Windward/Leeward High576.91.0401
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.1714.3603.2544.0512.7484.7435.7
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low659.50.9098
Triple Number Coastal/Long Distance Medium523.21.1468
Triple Number Coastal/Long Distance High473.81.2664
Triple Number Windward/Leeward Low849.60.7062
Triple Number Windward/Leeward Medium643.00.9331
Triple Number Windward/Leeward High576.91.0401
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance571.81.0494
Triple Number Coastal/Long Distance Low659.50.9098
Triple Number Coastal/Long Distance Medium523.21.1468
Triple Number Coastal/Long Distance High473.81.2664
Triple Number Windward/Leeward Low849.60.7062
Triple Number Windward/Leeward Medium643.00.9331
Triple Number Windward/Leeward High576.91.0401
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.1714.3603.2544.0512.7484.7435.7
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low849.60.7062
Triple Number Windward/Leeward Medium643.00.9331
Triple Number Windward/Leeward High576.91.0401
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.1714.3603.2544.0512.7484.7435.7
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low659.5
Triple Number Coastal/Long Distance Medium523.2
Triple Number Coastal/Long Distance High473.8
Triple Number Windward/Leeward Low849.6
Triple Number Windward/Leeward Medium643.0
Triple Number Windward/Leeward High576.9
Predominantly Upwind570.3
Predominantly Downwind528.7
Predominantly Reaching507.0
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance571.81.0494
Triple Number Coastal/Long Distance Low659.50.9098
Triple Number Coastal/Long Distance Medium523.21.1468
Triple Number Coastal/Long Distance High473.81.2664
Triple Number Windward/Leeward Low849.60.7062
Triple Number Windward/Leeward Medium643.00.9331
Triple Number Windward/Leeward High576.91.0401
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.1714.3603.2544.0512.7484.7435.7
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9098
Triple Number Coastal/Long Distance Medium1.1468
Triple Number Coastal/Long Distance High1.2664
Triple Number Windward/Leeward Low0.7062
Triple Number Windward/Leeward Medium0.9331
Triple Number Windward/Leeward High1.0401
Coastal/Long Distance1.0494
Predominantly Upwind1.0520
Predominantly Downwind1.1348
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.9098
Tretall Distanseseilas Mellomvind1.1468
Tretall Distanseseilas Mye vind1.2664
Tretall Pølsebane Lite vind0.7062
Tretall Pølsebane Mellomvind0.9331
Tretall Pølsebane Mye vind1.0401
Distanseseilas ett tall (OSN 8-16kn)1.0494
Distanseseilas ett tall (APH 6-20kn)1.1401
Enkeltall Motvind1.0520
Enkeltall Medvind1.1348
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low659.50.9098
Triple Number Coastal/Long Distance Medium523.21.1468
Triple Number Coastal/Long Distance High473.81.2664
Triple Number Windward/Leeward Low849.60.7062
Triple Number Windward/Leeward Medium643.00.9331
Triple Number Windward/Leeward High576.91.0401
Coastal/Long Distance571.81.0494
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind570.31.0520
Predominantly Downwind528.71.1348
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore563.21.0653
Cape Doctor Coastal462.51.2973
Triple Number Coastal/Long Distance Low659.50.9098
Triple Number Coastal/Long Distance Medium523.21.1468
Triple Number Coastal/Long Distance High473.81.2664
Triple Number Windward/Leeward Low849.60.7062
Triple Number Windward/Leeward Medium643.00.9331
Triple Number Windward/Leeward High576.91.0401
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9098
Triple Number Coastal/Long Distance Medium1.1468
Triple Number Coastal/Long Distance High1.2664
Triple Number Windward/Leeward Low0.7062
Triple Number Windward/Leeward Medium0.9331
Triple Number Windward/Leeward High1.0401
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9098
Triple Number Coastal/Long Distance Medium1.1468
Triple Number Coastal/Long Distance High1.2664
Triple Number Windward/Leeward Low0.7062
Triple Number Windward/Leeward Medium0.9331
Triple Number Windward/Leeward High1.0401
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance571.81.0494
Triple Number Coastal/Long Distance Low659.50.9098
Triple Number Coastal/Long Distance Medium523.21.1468
Triple Number Coastal/Long Distance High473.81.2664
Triple Number Windward/Leeward Low849.60.7062
Triple Number Windward/Leeward Medium643.00.9331
Triple Number Windward/Leeward High576.91.0401
Predominantly Upwind570.31.0520
Predominantly Downwind528.71.1348
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.1714.3603.2544.0512.7484.7435.7
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance571.81.0494
Triple Number Coastal/Long Distance Low659.50.9098
Triple Number Coastal/Long Distance Medium523.21.1468
Triple Number Coastal/Long Distance High473.81.2664
Triple Number Windward/Leeward Low849.60.7062
Triple Number Windward/Leeward Medium643.00.9331
Triple Number Windward/Leeward High576.91.0401
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance936.1714.3603.2544.0512.7484.7435.7
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low659.50.9098
Triple Number All Purpose Medium523.21.1468
Triple Number All Purpose High473.81.2664
Triple Number Windward/Leeward Low849.60.7062
Triple Number Windward/Leeward Medium643.00.9331
Triple Number Windward/Leeward High576.91.0401
Predominantly Upwind570.31.0520
Predominantly Downwind528.71.1348
Predominantly Upwind Low740.90.8098
Predominantly Upwind Medium591.51.0144
Predominantly Upwind High558.81.0737
Predominantly Downwind Low712.50.8421
Predominantly Downwind Medium525.01.1428
Predominantly Downwind High448.41.3379
Chicago-Mac Upwind1.0345
Chicago-Mac All Purpose1.0726
Chicago-Mac Downwind1.1169
Bayview-Mac Cove Island1.0019
Bayview-Mac Shore1.0066
Harvest Moon Regatta458.21.3095
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy558.31.0748
San Francisco Bay Medium632.50.9487
Predominantly Reaching496.51.2085
Predominantly Reaching Low591.81.0138
Predominantly Reaching Medium491.31.2213
Predominantly Reaching High437.91.3701
Windward/Leeward 60-40 Low858.00.6993
Windward/Leeward 60-40 Medium664.30.9032
Windward/Leeward 60-40 High607.80.9872
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low926.00.6479
5-Band Low / Medium779.30.7699
5-Band Medium634.20.9461
5-Band Medium / High584.31.0269
5-Band High559.81.0718
ORC Ref  04560002T4VIssued on 18/10/2023Valid until 27/02/2024
VPP ver: 2023 1.03 | © ORC | www.orc.org

International
Certificate
2023

Boat

SILVER SURFER

USA 7

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ 112EMeasurement05/10/2023HINPlan reviewHull constructionCoredCarbon RudderNoLight stanchionsNoTrim tabNo
LOA11.000Max. Beam3.598Draft2.090Displacement5,294Wetted area25.48IMS L10.038LSM09.747Acc. length11.000Sink (kg/mm) 19.35
VCGD-0.018VCGM-0.067RM Rated (kg·m) 135.7Limit of positive stability(°) 122.0Stability Index121.5
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.413PBW0.108PIPA0.0038
EDL2.205ST10.065ST20.170
ST30.305ST40.110ST50.310
RIG
Forestay tensionAftInner stayNone FittedCarbon mastYesHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders2Rotating mastNo
P13.854IG14.786ISP15.801MDT10.108MDL10.180MDT20.105MDL20.155TL1.110MW0.216GO0.216
E4.724J4.275BAS1.756FSD0.028SFJ0.220SPLWPLTPS6.425BD0.225MWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodBoom incliningFlotation Date05/10/2023MeasurerComment
SFFP0.488FFM1.374FF1.373LCFcl6.054SG1.0220
SAFP10.805FAM0.979FA0.984LCFsh6.313HBI1.144
W195.9W295.9W395.9W495.9LCFD6.214
PD1258.6PD2260.2PD3257.4PD4258.3
WD4.614PLM9000.00GSA1.0RSA1.0RM134.7
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
TANKSIdDescriptionSp.WghtCapacityConditionLCGVCGBPVC water tank centerline under V berthWater20002.160.25AAlloy tank aft stbd centerlineFuel80308.460.00Total deductible258.460.00
OTHER ITEMSIdKindDescriptionWeightLCGVCG5MiscellaneousPropane tank full stbd centerline2010.000.204MiscellaneousAC compressor port centerline3010.300.153MiscellaneousGalley stove & range stbd side256.400.302MiscellaneousHVAC system stbd settee605.330.001Battery2x 12V 160 Ah AGM Mastervolt house batteries, port settee705.130.00#EngineVolvo MD307.500.00Total deductible0
ORC Ref  04560002T4VIssued on 18/10/2023Valid until 27/02/2024
VPP ver: 2023 1.03 | © ORC | www.orc.org

International
Certificate
2023

Boat

SILVER SURFER

USA 7

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentMain0.161.011.793.073.9639.0723/09/2021OUS144804-001
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentLt/Med Jib0.090.671.252.373.474.5114.70YesNo 34.3723/09/2021OUS144804-002Med/heavy0.080.611.172.213.344.4814.47YesNo 32.5217/12/2015OUS113767-003
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentA217.8714.8516.369.529.8197%130.5812/04/2015OUS113767-004A317.0415.0716.067.909.5783%110.1618/02/2022OUS147620-001A016.1014.4515.286.658.7076%89.8706/10/2023
ORC Ref  04560002T4VIssued on 18/10/2023Valid until 27/02/2024
VPP ver: 2023 1.03 | © ORC | www.orc.org