Club
Certificate
2023

Boat

Elbåden Silent Sea

NOR 10804

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 Angles45.4°43.2°41.8°39.9°39.4°39.0°39.0°
Beat VMG3.614.455.065.405.625.725.79
52°5.656.817.537.898.088.208.31
60°6.087.187.848.198.368.468.59
75°6.467.528.118.468.708.869.04
90°6.447.528.178.568.869.129.51
110°6.057.388.208.689.069.409.84
120°5.887.228.108.639.069.4810.26
135°5.266.617.658.318.789.2210.14
150°4.445.686.757.608.158.529.16
Run VMG3.844.925.856.587.067.448.40
Gybe Angles143.0°146.9°148.0°149.2°150.1°169.4°176.3°

APH: 508.4

CDL: 11.432

GPH: 573.1

CertNo: 7998

BOAT
ClassFirst 47.7DesignerBruce FarrBuilderBeneteauAge date01/2002Series date01/2000Offset fileF191.OFFData file7998
HULL
Length Overall14.500 mMaximum Beam4.512 mDraft2.289 mDisplacement12,074 kgDLR6.0703IMS DivisionCruiser/RacerDynamic Allowance0.250%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.440m
CREW
Maximum weight954 kgMinimum weight716 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail60.9563.04Headsail Luffed41.8741.87Headsail Flying69.1269.12SymmetricAsymmetric149.00149.00 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail17.91Storm Jib14.50Heavy Weather Jib39.15
SAIL LIMITS
Headsails6  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  03440002ER6Issued on 28/03/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

Elbåden Silent Sea

NOR 10804

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 VMG997.1808.3712.2666.7640.9628.8621.3
52°636.8528.9477.8456.0445.6438.9433.1
60°592.2501.1459.0439.7430.8425.6419.2
75°557.4478.9443.7425.3413.7406.4398.3
90°558.9478.5440.8420.3406.1394.7378.6
110°595.0488.0439.2414.8397.3383.2366.0
120°611.8498.7444.6417.2397.1379.6350.7
135°684.2544.3470.6433.0410.1390.5354.9
150°811.5633.9533.3473.5441.6422.3392.9
Run VMG937.1732.0615.8546.8509.8483.9428.5
Selected Courses
Windward / Leeward967.1770.1664.0606.7575.4556.4524.9
All purpose733.8596.1525.4488.7467.4453.1433.5
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward637.10.9417
All purpose508.41.1801
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low664.90.9024
Triple Number Coastal/Long Distance Medium504.51.1892
Triple Number Coastal/Long Distance High449.31.3353
Triple Number Windward/Leeward Low868.60.6908
Triple Number Windward/Leeward Medium631.60.9500
Triple Number Windward/Leeward High549.31.0923
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance556.71.0778
Triple Number Coastal/Long Distance Low664.90.9024
Triple Number Coastal/Long Distance Medium504.51.1892
Triple Number Coastal/Long Distance High449.31.3353
Triple Number Windward/Leeward Low868.60.6908
Triple Number Windward/Leeward Medium631.60.9500
Triple Number Windward/Leeward High549.31.0923
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance964.1721.7595.3523.6485.9457.8412.5
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8275
Downwind "popa"0.9873
70% up, 30% down "Ilhabela"0.8698
30% up, 70% down "Ilhabela-inverso"0.9333
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low664.90.9024
Triple Number Coastal/Long Distance Medium504.51.1892
Triple Number Coastal/Long Distance High449.31.3353
Triple Number Windward/Leeward Low868.60.6908
Triple Number Windward/Leeward Medium631.60.9500
Triple Number Windward/Leeward High549.31.0923
Predominantly Upwind550.71.0894
Predominantly Downwind518.81.1566
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low664.90.9024
Triple Number All Purpose Medium504.51.1892
Triple Number All Purpose High449.31.3353
Triple Number Windward/Leeward Low868.60.6908
Triple Number Windward/Leeward Medium631.60.9500
Triple Number Windward/Leeward High549.31.0923
Predominantly Upwind550.71.0894
Predominantly Downwind518.81.1566
Predominantly Upwind Low746.60.8036
Predominantly Upwind Medium568.71.0550
Predominantly Upwind High522.71.1479
Predominantly Downwind Low727.90.8243
Predominantly Downwind Medium514.91.1654
Predominantly Downwind High434.51.3810
Chicago-Mac Upwind1.0682
Chicago-Mac All Purpose1.0993
Chicago-Mac Downwind1.1358
Bayview-Mac Cove Island1.0189
Bayview-Mac Shore1.0293
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching478.81.2532
Predominantly Reaching Low594.51.0093
Predominantly Reaching Medium473.61.2668
Predominantly Reaching High416.01.4425
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low951.90.6303
5-Band Low / Medium790.10.7594
5-Band Medium620.40.9671
5-Band Medium / High558.51.0744
5-Band High530.31.1313
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance556.71.0778
Triple Number Coastal/Long Distance Low664.90.9024
Triple Number Coastal/Long Distance Medium504.51.1892
Triple Number Coastal/Long Distance High449.31.3353
Triple Number Windward/Leeward Low868.60.6908
Triple Number Windward/Leeward Medium631.60.9500
Triple Number Windward/Leeward High549.31.0923
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance964.1721.7595.3523.6485.9457.8412.5
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance556.71.0778
Triple Number Coastal/Long Distance Low664.90.9024
Triple Number Coastal/Long Distance Medium504.51.1892
Triple Number Coastal/Long Distance High449.31.3353
Triple Number Windward/Leeward Low868.60.6908
Triple Number Windward/Leeward Medium631.60.9500
Triple Number Windward/Leeward High549.31.0923
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance964.1721.7595.3523.6485.9457.8412.5
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance556.7
Triple Number Coastal/Long Distance Low664.9
Triple Number Coastal/Long Distance Medium504.5
Triple Number Coastal/Long Distance High449.3
Triple Number Windward/Leeward Low868.6
Triple Number Windward/Leeward Medium631.6
Triple Number Windward/Leeward High549.3
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance964.1721.7595.3523.6485.9457.8412.5
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance556.71.0778
Triple Number Coastal/Long Distance Low664.90.9024
Triple Number Coastal/Long Distance Medium504.51.1892
Triple Number Coastal/Long Distance High449.31.3353
Triple Number Windward/Leeward Low868.60.6908
Triple Number Windward/Leeward Medium631.60.9500
Triple Number Windward/Leeward High549.31.0923
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance964.1721.7595.3523.6485.9457.8412.5
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)556.71.0778
Triple Number Coastal/Long Distance Low664.90.9024
Triple Number Coastal/Long Distance Medium504.51.1892
Triple Number Coastal/Long Distance High449.31.3353
Triple Number Windward/Leeward Low868.60.6908
Triple Number Windward/Leeward Medium631.60.9500
Triple Number Windward/Leeward High549.31.0923
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance964.1721.7595.3523.6485.9457.8412.5
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low664.90.9024
Triple Number Coastal/Long Distance Medium504.51.1892
Triple Number Coastal/Long Distance High449.31.3353
Triple Number Windward/Leeward Low868.60.6908
Triple Number Windward/Leeward Medium631.60.9500
Triple Number Windward/Leeward High549.31.0923
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9024
Triple Number Coastal/Long Distance Medium1.1892
Triple Number Coastal/Long Distance High1.3353
Triple Number Windward/Leeward Low0.6908
Triple Number Windward/Leeward Medium0.9500
Triple Number Windward/Leeward High1.0923
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance964.1721.7595.3523.6485.9457.8412.5
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance556.71.0778
Triple Number Coastal/Long Distance Low664.90.9024
Triple Number Coastal/Long Distance Medium504.51.1892
Triple Number Coastal/Long Distance High449.31.3353
Triple Number Windward/Leeward Low868.60.6908
Triple Number Windward/Leeward Medium631.60.9500
Triple Number Windward/Leeward High549.31.0923
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance964.1721.7595.3523.6485.9457.8412.5
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low664.90.9024
Triple Number Coastal/Long Distance Medium504.51.1892
Triple Number Coastal/Long Distance High449.31.3353
Triple Number Windward/Leeward Low868.60.6908
Triple Number Windward/Leeward Medium631.60.9500
Triple Number Windward/Leeward High549.31.0923
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance556.71.0778
Triple Number Coastal/Long Distance Low664.90.9024
Triple Number Coastal/Long Distance Medium504.51.1892
Triple Number Coastal/Long Distance High449.31.3353
Triple Number Windward/Leeward Low868.60.6908
Triple Number Windward/Leeward Medium631.60.9500
Triple Number Windward/Leeward High549.31.0923
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance964.1721.7595.3523.6485.9457.8412.5
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low868.60.6908
Triple Number Windward/Leeward Medium631.60.9500
Triple Number Windward/Leeward High549.31.0923
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance964.1721.7595.3523.6485.9457.8412.5
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low664.9
Triple Number Coastal/Long Distance Medium504.5
Triple Number Coastal/Long Distance High449.3
Triple Number Windward/Leeward Low868.6
Triple Number Windward/Leeward Medium631.6
Triple Number Windward/Leeward High549.3
Predominantly Upwind550.7
Predominantly Downwind518.8
Predominantly Reaching492.5
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance556.71.0778
Triple Number Coastal/Long Distance Low664.90.9024
Triple Number Coastal/Long Distance Medium504.51.1892
Triple Number Coastal/Long Distance High449.31.3353
Triple Number Windward/Leeward Low868.60.6908
Triple Number Windward/Leeward Medium631.60.9500
Triple Number Windward/Leeward High549.31.0923
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance964.1721.7595.3523.6485.9457.8412.5
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9024
Triple Number Coastal/Long Distance Medium1.1892
Triple Number Coastal/Long Distance High1.3353
Triple Number Windward/Leeward Low0.6908
Triple Number Windward/Leeward Medium0.9500
Triple Number Windward/Leeward High1.0923
Coastal/Long Distance1.0778
Predominantly Upwind1.0894
Predominantly Downwind1.1566
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.9024
Tretall Distanseseilas Mellomvind1.1892
Tretall Distanseseilas Mye vind1.3353
Tretall Pølsebane Lite vind0.6908
Tretall Pølsebane Mellomvind0.9500
Tretall Pølsebane Mye vind1.0923
Distanseseilas ett tall (OSN 8-16kn)1.0778
Distanseseilas ett tall (APH 6-20kn)1.1801
Enkeltall Motvind1.0894
Enkeltall Medvind1.1566
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low664.90.9024
Triple Number Coastal/Long Distance Medium504.51.1892
Triple Number Coastal/Long Distance High449.31.3353
Triple Number Windward/Leeward Low868.60.6908
Triple Number Windward/Leeward Medium631.60.9500
Triple Number Windward/Leeward High549.31.0923
Coastal/Long Distance556.71.0778
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind550.71.0894
Predominantly Downwind518.81.1566
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore534.31.1229
Cape Doctor Coastal439.41.3655
Triple Number Coastal/Long Distance Low664.90.9024
Triple Number Coastal/Long Distance Medium504.51.1892
Triple Number Coastal/Long Distance High449.31.3353
Triple Number Windward/Leeward Low868.60.6908
Triple Number Windward/Leeward Medium631.60.9500
Triple Number Windward/Leeward High549.31.0923
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9024
Triple Number Coastal/Long Distance Medium1.1892
Triple Number Coastal/Long Distance High1.3353
Triple Number Windward/Leeward Low0.6908
Triple Number Windward/Leeward Medium0.9500
Triple Number Windward/Leeward High1.0923
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9024
Triple Number Coastal/Long Distance Medium1.1892
Triple Number Coastal/Long Distance High1.3353
Triple Number Windward/Leeward Low0.6908
Triple Number Windward/Leeward Medium0.9500
Triple Number Windward/Leeward High1.0923
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance556.71.0778
Triple Number Coastal/Long Distance Low664.90.9024
Triple Number Coastal/Long Distance Medium504.51.1892
Triple Number Coastal/Long Distance High449.31.3353
Triple Number Windward/Leeward Low868.60.6908
Triple Number Windward/Leeward Medium631.60.9500
Triple Number Windward/Leeward High549.31.0923
Predominantly Upwind550.71.0894
Predominantly Downwind518.81.1566
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance964.1721.7595.3523.6485.9457.8412.5
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance556.71.0778
Triple Number Coastal/Long Distance Low664.90.9024
Triple Number Coastal/Long Distance Medium504.51.1892
Triple Number Coastal/Long Distance High449.31.3353
Triple Number Windward/Leeward Low868.60.6908
Triple Number Windward/Leeward Medium631.60.9500
Triple Number Windward/Leeward High549.31.0923
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance964.1721.7595.3523.6485.9457.8412.5
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low664.90.9024
Triple Number All Purpose Medium504.51.1892
Triple Number All Purpose High449.31.3353
Triple Number Windward/Leeward Low868.60.6908
Triple Number Windward/Leeward Medium631.60.9500
Triple Number Windward/Leeward High549.31.0923
Predominantly Upwind550.71.0894
Predominantly Downwind518.81.1566
Predominantly Upwind Low746.60.8036
Predominantly Upwind Medium568.71.0550
Predominantly Upwind High522.71.1479
Predominantly Downwind Low727.90.8243
Predominantly Downwind Medium514.91.1654
Predominantly Downwind High434.51.3810
Chicago-Mac Upwind1.0682
Chicago-Mac All Purpose1.0993
Chicago-Mac Downwind1.1358
Bayview-Mac Cove Island1.0189
Bayview-Mac Shore1.0293
Harvest Moon Regatta437.51.3714
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy534.31.1229
San Francisco Bay Medium623.20.9628
Predominantly Reaching478.81.2532
Predominantly Reaching Low594.51.0093
Predominantly Reaching Medium473.61.2668
Predominantly Reaching High416.01.4425
Windward/Leeward 60-40 Low875.40.6854
Windward/Leeward 60-40 Medium650.50.9223
Windward/Leeward 60-40 High576.41.0409
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low951.90.6303
5-Band Low / Medium790.10.7594
5-Band Medium620.40.9671
5-Band Medium / High558.51.0744
5-Band High530.31.1313
ORC Ref  03440002ER6Issued on 28/03/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

Elbåden Silent Sea

NOR 10804

Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassFirst 47.7MeasurementHINPlan reviewHull constructionSolidCarbon RudderNoLight stanchionsNoTrim tabNo
LOA14.500Max. Beam4.512Draft2.289Displacement12,074Wetted area42.16IMS L12.831LSM012.575Acc. length14.500Sink (kg/mm) 32.27
VCGD0.170VCGM0.202RM Rated (kg·m) 327.9Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.440PBWPIPA0.0038
EDL1.100ST10.040ST20.140
ST30.140ST40.140ST50.240
RIG
Forestay tensionForwardInner stayNone FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders3Rotating mastNo
P15.860IG16.930ISP17.250MDT10.140MDL10.270MDT20.140MDL20.200TL1.000MW0.270GO0.300
E6.450J5.200BAS1.910FSD0.050SFJ0.000SPL0.000WPLTPS6.300BDMWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered0.170Flotation Date01/01/2015MeasurerComment
SFFP0.520FFMFF1.590LCFcl7.880SG1.0250
SAFP13.746FAMFA1.300LCFsh8.188HBI1.428
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03440002ER6Issued on 28/03/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

Elbåden Silent Sea

NOR 10804

Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment451-2023032111300.152.062.963.765.1060.9521/03/2023
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment306-2021030116290.080.952.254.455.298.0817.30NoYes069.1201/03/20211-2019022212450.100.621.202.483.885.3516.24NoNo 41.8708/01/2019Målt av C.with
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment306-20210301091818.1215.2516.6910.4711.7089%149.0001/03/2021G2 2021
ORC Ref  03440002ER6Issued on 28/03/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org