Club
Certificate
Non Spinnaker
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 Angles44.8°42.6°41.2°39.9°39.4°39.0°39.1°
Beat VMG3.504.344.975.405.625.725.79
52°5.436.567.347.828.088.208.31
60°5.786.887.618.058.318.468.59
75°6.027.117.828.258.538.759.02
90°5.887.037.808.288.608.889.34
110°5.196.437.408.068.498.849.49
120°4.846.107.117.858.348.709.38
135°4.195.416.447.297.938.389.06
150°3.534.645.606.467.207.798.56
Run VMG3.064.024.905.776.567.268.29
Gybe Angles144.8°146.2°173.0°176.6°179.3°179.3°179.9°

APH: 544.7

CDL: 11.431

GPH: 620.9

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 Allowance0.320%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 FlyingSymmetricAsymmetric
STORM SAIL AREAS (m²)
Trysail17.91Storm Jib14.50Heavy Weather Jib39.15
SAIL LIMITS
Headsails6  Spinnakers0 * No spinnaker pole aboard
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  03440002ERLIssued on 28/03/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Non Spinnaker
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 VMG1030.0829.8724.5666.7641.0628.9621.5
52°662.8548.9490.5460.5445.6438.9433.2
60°622.8523.3473.0447.1433.2425.6419.2
75°598.4506.4460.5436.6421.8411.4399.1
90°611.8511.8461.3435.0418.5405.5385.5
110°693.6560.0486.3446.7424.0407.4379.4
120°743.1589.9506.7458.7431.8413.6383.7
135°859.7665.1559.4494.1454.1429.8397.5
150°1018.6775.3642.9557.6500.2462.1420.4
Run VMG1176.2895.2734.5623.9548.9495.7434.5
Selected Courses
Windward / Leeward1103.1862.5729.5645.3595.0562.3528.0
All purpose831.5663.0572.7519.1487.8467.8444.5
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward682.50.8791
All purpose544.71.1015
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low747.30.8029
Triple Number Coastal/Long Distance Medium541.11.1088
Triple Number Coastal/Long Distance High464.11.2929
Triple Number Windward/Leeward Low982.80.6105
Triple Number Windward/Leeward Medium678.90.8838
Triple Number Windward/Leeward High557.61.0761
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance599.11.0014
Triple Number Coastal/Long Distance Low747.30.8029
Triple Number Coastal/Long Distance Medium541.11.1088
Triple Number Coastal/Long Distance High464.11.2929
Triple Number Windward/Leeward Low982.80.6105
Triple Number Windward/Leeward Medium678.90.8838
Triple Number Windward/Leeward High557.61.0761
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1110.4810.0652.4556.6507.6473.3425.5
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8168
Downwind "popa"0.8556
70% up, 30% down "Ilhabela"0.8280
30% up, 70% down "Ilhabela-inverso"0.8436
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low747.30.8029
Triple Number Coastal/Long Distance Medium541.11.1088
Triple Number Coastal/Long Distance High464.11.2929
Triple Number Windward/Leeward Low982.80.6105
Triple Number Windward/Leeward Medium678.90.8838
Triple Number Windward/Leeward High557.61.0761
Predominantly Upwind575.31.0429
Predominantly Downwind576.91.0400
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low747.30.8029
Triple Number All Purpose Medium541.11.1088
Triple Number All Purpose High464.11.2929
Triple Number Windward/Leeward Low982.80.6105
Triple Number Windward/Leeward Medium678.90.8838
Triple Number Windward/Leeward High557.61.0761
Predominantly Upwind575.31.0429
Predominantly Downwind576.91.0400
Predominantly Upwind Low803.80.7465
Predominantly Upwind Medium580.61.0334
Predominantly Upwind High525.91.1408
Predominantly Downwind Low864.30.6942
Predominantly Downwind Medium584.51.0265
Predominantly Downwind High457.01.3128
Chicago-Mac Upwind1.0203
Chicago-Mac All Purpose1.0161
Chicago-Mac Downwind1.0147
Bayview-Mac Cove Island0.9345
Bayview-Mac Shore0.9584
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching515.01.1651
Predominantly Reaching Low675.60.8882
Predominantly Reaching Medium514.91.1652
Predominantly Reaching High434.91.3797
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1084.60.5532
5-Band Low / Medium885.00.6780
5-Band Medium662.10.9062
5-Band Medium / High569.01.0545
5-Band High533.91.1238
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance599.11.0014
Triple Number Coastal/Long Distance Low747.30.8029
Triple Number Coastal/Long Distance Medium541.11.1088
Triple Number Coastal/Long Distance High464.11.2929
Triple Number Windward/Leeward Low982.80.6105
Triple Number Windward/Leeward Medium678.90.8838
Triple Number Windward/Leeward High557.61.0761
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1110.4810.0652.4556.6507.6473.3425.5
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance599.11.0014
Triple Number Coastal/Long Distance Low747.30.8029
Triple Number Coastal/Long Distance Medium541.11.1088
Triple Number Coastal/Long Distance High464.11.2929
Triple Number Windward/Leeward Low982.80.6105
Triple Number Windward/Leeward Medium678.90.8838
Triple Number Windward/Leeward High557.61.0761
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1110.4810.0652.4556.6507.6473.3425.5
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance599.1
Triple Number Coastal/Long Distance Low747.3
Triple Number Coastal/Long Distance Medium541.1
Triple Number Coastal/Long Distance High464.1
Triple Number Windward/Leeward Low982.8
Triple Number Windward/Leeward Medium678.9
Triple Number Windward/Leeward High557.6
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1110.4810.0652.4556.6507.6473.3425.5
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance599.11.0014
Triple Number Coastal/Long Distance Low747.30.8029
Triple Number Coastal/Long Distance Medium541.11.1088
Triple Number Coastal/Long Distance High464.11.2929
Triple Number Windward/Leeward Low982.80.6105
Triple Number Windward/Leeward Medium678.90.8838
Triple Number Windward/Leeward High557.61.0761
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1110.4810.0652.4556.6507.6473.3425.5
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)599.11.0014
Triple Number Coastal/Long Distance Low747.30.8029
Triple Number Coastal/Long Distance Medium541.11.1088
Triple Number Coastal/Long Distance High464.11.2929
Triple Number Windward/Leeward Low982.80.6105
Triple Number Windward/Leeward Medium678.90.8838
Triple Number Windward/Leeward High557.61.0761
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1110.4810.0652.4556.6507.6473.3425.5
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low747.30.8029
Triple Number Coastal/Long Distance Medium541.11.1088
Triple Number Coastal/Long Distance High464.11.2929
Triple Number Windward/Leeward Low982.80.6105
Triple Number Windward/Leeward Medium678.90.8838
Triple Number Windward/Leeward High557.61.0761
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8029
Triple Number Coastal/Long Distance Medium1.1088
Triple Number Coastal/Long Distance High1.2929
Triple Number Windward/Leeward Low0.6105
Triple Number Windward/Leeward Medium0.8838
Triple Number Windward/Leeward High1.0761
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1110.4810.0652.4556.6507.6473.3425.5
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance599.11.0014
Triple Number Coastal/Long Distance Low747.30.8029
Triple Number Coastal/Long Distance Medium541.11.1088
Triple Number Coastal/Long Distance High464.11.2929
Triple Number Windward/Leeward Low982.80.6105
Triple Number Windward/Leeward Medium678.90.8838
Triple Number Windward/Leeward High557.61.0761
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1110.4810.0652.4556.6507.6473.3425.5
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low747.30.8029
Triple Number Coastal/Long Distance Medium541.11.1088
Triple Number Coastal/Long Distance High464.11.2929
Triple Number Windward/Leeward Low982.80.6105
Triple Number Windward/Leeward Medium678.90.8838
Triple Number Windward/Leeward High557.61.0761
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance599.11.0014
Triple Number Coastal/Long Distance Low747.30.8029
Triple Number Coastal/Long Distance Medium541.11.1088
Triple Number Coastal/Long Distance High464.11.2929
Triple Number Windward/Leeward Low982.80.6105
Triple Number Windward/Leeward Medium678.90.8838
Triple Number Windward/Leeward High557.61.0761
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1110.4810.0652.4556.6507.6473.3425.5
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low982.80.6105
Triple Number Windward/Leeward Medium678.90.8838
Triple Number Windward/Leeward High557.61.0761
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1110.4810.0652.4556.6507.6473.3425.5
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low747.3
Triple Number Coastal/Long Distance Medium541.1
Triple Number Coastal/Long Distance High464.1
Triple Number Windward/Leeward Low982.8
Triple Number Windward/Leeward Medium678.9
Triple Number Windward/Leeward High557.6
Predominantly Upwind575.3
Predominantly Downwind576.9
Predominantly Reaching538.5
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance599.11.0014
Triple Number Coastal/Long Distance Low747.30.8029
Triple Number Coastal/Long Distance Medium541.11.1088
Triple Number Coastal/Long Distance High464.11.2929
Triple Number Windward/Leeward Low982.80.6105
Triple Number Windward/Leeward Medium678.90.8838
Triple Number Windward/Leeward High557.61.0761
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1110.4810.0652.4556.6507.6473.3425.5
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8029
Triple Number Coastal/Long Distance Medium1.1088
Triple Number Coastal/Long Distance High1.2929
Triple Number Windward/Leeward Low0.6105
Triple Number Windward/Leeward Medium0.8838
Triple Number Windward/Leeward High1.0761
Coastal/Long Distance1.0014
Predominantly Upwind1.0429
Predominantly Downwind1.0400
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.8029
Tretall Distanseseilas Mellomvind1.1088
Tretall Distanseseilas Mye vind1.2929
Tretall Pølsebane Lite vind0.6105
Tretall Pølsebane Mellomvind0.8838
Tretall Pølsebane Mye vind1.0761
Distanseseilas ett tall (OSN 8-16kn)1.0014
Distanseseilas ett tall (APH 6-20kn)1.1015
Enkeltall Motvind1.0429
Enkeltall Medvind1.0400
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low747.30.8029
Triple Number Coastal/Long Distance Medium541.11.1088
Triple Number Coastal/Long Distance High464.11.2929
Triple Number Windward/Leeward Low982.80.6105
Triple Number Windward/Leeward Medium678.90.8838
Triple Number Windward/Leeward High557.61.0761
Coastal/Long Distance599.11.0014
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind575.31.0429
Predominantly Downwind576.91.0400
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore538.31.1147
Cape Doctor Coastal451.51.3289
Triple Number Coastal/Long Distance Low747.30.8029
Triple Number Coastal/Long Distance Medium541.11.1088
Triple Number Coastal/Long Distance High464.11.2929
Triple Number Windward/Leeward Low982.80.6105
Triple Number Windward/Leeward Medium678.90.8838
Triple Number Windward/Leeward High557.61.0761
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8029
Triple Number Coastal/Long Distance Medium1.1088
Triple Number Coastal/Long Distance High1.2929
Triple Number Windward/Leeward Low0.6105
Triple Number Windward/Leeward Medium0.8838
Triple Number Windward/Leeward High1.0761
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8029
Triple Number Coastal/Long Distance Medium1.1088
Triple Number Coastal/Long Distance High1.2929
Triple Number Windward/Leeward Low0.6105
Triple Number Windward/Leeward Medium0.8838
Triple Number Windward/Leeward High1.0761
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance599.11.0014
Triple Number Coastal/Long Distance Low747.30.8029
Triple Number Coastal/Long Distance Medium541.11.1088
Triple Number Coastal/Long Distance High464.11.2929
Triple Number Windward/Leeward Low982.80.6105
Triple Number Windward/Leeward Medium678.90.8838
Triple Number Windward/Leeward High557.61.0761
Predominantly Upwind575.31.0429
Predominantly Downwind576.91.0400
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1110.4810.0652.4556.6507.6473.3425.5
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance599.11.0014
Triple Number Coastal/Long Distance Low747.30.8029
Triple Number Coastal/Long Distance Medium541.11.1088
Triple Number Coastal/Long Distance High464.11.2929
Triple Number Windward/Leeward Low982.80.6105
Triple Number Windward/Leeward Medium678.90.8838
Triple Number Windward/Leeward High557.61.0761
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1110.4810.0652.4556.6507.6473.3425.5
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low747.30.8029
Triple Number All Purpose Medium541.11.1088
Triple Number All Purpose High464.11.2929
Triple Number Windward/Leeward Low982.80.6105
Triple Number Windward/Leeward Medium678.90.8838
Triple Number Windward/Leeward High557.61.0761
Predominantly Upwind575.31.0429
Predominantly Downwind576.91.0400
Predominantly Upwind Low803.80.7465
Predominantly Upwind Medium580.61.0334
Predominantly Upwind High525.91.1408
Predominantly Downwind Low864.30.6942
Predominantly Downwind Medium584.51.0265
Predominantly Downwind High457.01.3128
Chicago-Mac Upwind1.0203
Chicago-Mac All Purpose1.0161
Chicago-Mac Downwind1.0147
Bayview-Mac Cove Island0.9345
Bayview-Mac Shore0.9584
Harvest Moon Regatta466.91.2852
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy548.41.0942
San Francisco Bay Medium672.50.8922
Predominantly Reaching515.01.1651
Predominantly Reaching Low675.60.8882
Predominantly Reaching Medium514.91.1652
Predominantly Reaching High434.91.3797
Windward/Leeward 60-40 Low972.20.6171
Windward/Leeward 60-40 Medium683.80.8774
Windward/Leeward 60-40 High581.91.0310
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1084.60.5532
5-Band Low / Medium885.00.6780
5-Band Medium662.10.9062
5-Band Medium / High569.01.0545
5-Band High533.91.1238
ORC Ref  03440002ERLIssued on 28/03/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Non Spinnaker
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 L12.828LSM012.575Acc. 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  03440002ERLIssued on 28/03/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Non Spinnaker
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.DateComment1-2019022212450.100.621.202.483.885.3516.24NoNo 41.8708/01/2019Målt av C.with
ORC Ref  03440002ERLIssued on 28/03/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org