Club
Certificate
2024

Boat

Vesper

BEL 4801

Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat Angles44.7°42.5°40.8°40.1°39.5°39.2°38.9°39.7°
Beat VMG3.874.775.395.735.916.026.136.10
52°6.097.277.948.338.528.638.758.77
60°6.647.748.248.608.798.909.039.07
75°7.148.178.678.919.089.269.489.61
90°7.238.298.859.209.459.649.9310.18
110°6.828.018.769.229.569.9410.5911.14
120°6.467.868.719.249.7110.1310.7411.31
135°5.807.258.308.949.469.9811.0912.53
150°4.886.197.338.238.789.169.9010.73
Run VMG4.225.366.357.137.617.948.909.66
Gybe Angles142.6°145.6°148.0°150.0°150.4°150.5°175.5°175.3°
APH ToD:475.4CDL: 12.745APH ToT: 1.2622CertNo:
BOAT
ClassSWAN 48DesignerFRERSBuilderOY NAUTOR ABAge date06/2019Series date06/2019Offset fileSWAN-48.offData fileBEL4801
HULL
Length Overall14.767 mMaximum Beam4.564 mDraft2.427 mDisplacement15,176 kgDLR5.3182IMS DivisionCruiser/RacerDynamic Allowance0.230%Age Allowance0.163%
PROPELLER
InstallationStrutTypeFolding 3 bladesDiameter0.508m
CREW
Maximum weight1,105 kg(declared)Minimum weight939 kg * when appliedNon Manual PowerYesCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail75.8176.84Headsail Luffed60.7960.79Headsail Flying133.53133.53SymmetricAsymmetric225.29225.29 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail22.99Storm Jib21.44Heavy Weather Jib57.88
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.

Club
Certificate
2024

Boat

Vesper

BEL 4801

Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat VMG931.2755.5668.2628.6609.1597.9587.0590.4
52°591.0495.5453.5432.1422.6417.1411.4410.3
60°542.6464.8436.9418.8409.4404.5398.6396.9
75°504.2440.4415.0403.9396.6388.6379.6374.7
90°497.7434.3406.8391.3380.8373.6362.5353.5
110°528.1449.3410.9390.6376.7362.3340.0323.1
120°557.1458.1413.5389.7370.9355.4335.3318.3
135°621.1496.5433.9402.5380.7360.8324.5287.4
150°738.1581.8491.1437.3410.0393.0363.7335.4
Run VMG852.3671.8567.0505.0473.2453.6404.6372.8
Selected Courses
Windward / Leeward891.7713.6617.6566.8541.2525.8495.8481.6
All purpose671.4550.5489.7458.2440.5428.2408.6395.8
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward595.11.0082
All purpose475.41.2622
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low610.90.9821
Triple Number Coastal/Long Distance Medium472.01.2713
Triple Number Coastal/Long Distance High423.91.4153
Triple Number Windward/Leeward Low802.70.7475
Triple Number Windward/Leeward Medium589.61.0177
Triple Number Windward/Leeward High518.41.1575
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance520.11.1536
Triple Number Coastal/Long Distance Low610.90.9821
Triple Number Coastal/Long Distance Medium472.01.2713
Triple Number Coastal/Long Distance High423.91.4153
Triple Number Windward/Leeward Low802.70.7475
Triple Number Windward/Leeward Medium589.61.0177
Triple Number Windward/Leeward High518.41.1575
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance887.8667.9554.4490.3457.1431.9391.5379.4
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.8791
Downwind "popa"1.0694
70% up, 30% down "Ilhabela"0.9287
30% up, 70% down "Ilhabela-inverso"1.0042
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low610.90.9821
Triple Number Coastal/Long Distance Medium472.01.2713
Triple Number Coastal/Long Distance High423.91.4153
Triple Number Windward/Leeward Low802.70.7475
Triple Number Windward/Leeward Medium589.61.0177
Triple Number Windward/Leeward High518.41.1575
Predominantly Upwind516.01.1628
Predominantly Downwind481.01.2473
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low611.00.9821
Triple Number AP Medium472.01.2712
Triple Number AP High423.91.4153
Triple Number Windward/Leeward Low802.70.7475
Triple Number Windward/Leeward Medium589.61.0177
Triple Number Windward/Leeward High518.41.1575
Single Number Predominant Upwind515.21.1646
Single Number Predominant Reaching448.61.3375
Single Number Predominant Downwind481.61.2459
Predominant Upwind - Low681.40.8805
Predominant Upwind - Low/Med567.01.0582
Predominant Upwind - Medium499.31.2016
Predominant Upwind - Med/High466.61.2860
Predominant Upwind - High451.51.3289
Predominant Downwind Low667.60.8987
Predominant Downwind Low/Med542.71.1056
Predominant Downwind Medium463.71.2941
Predominant Downwind Med/High418.11.4352
Predominant Downwind High387.61.5479
Predominant Reaching Low588.31.0198
Predominant Reaching Low/Med493.41.2160
Predominant Reaching Medium435.81.3769
Predominant Reaching Med/High403.11.4885
Predominant Reaching High382.71.5679
SA/DSPL Upwind22.08SA/DSPL Downwind48.68
Scoring OptionTODTOT
5-Band Windward/Leeward Low851.30.7048
5-Band Windward/Leeward Low/Med684.30.8768
5-Band Windward/Leeward Medium579.81.0349
5-Band Windward/Leeward Med/High526.71.1392
5-Band Windward/Leeward High498.51.2035
Windward/Leeward 60-40 Low859.30.6982
Windward/Leeward 60-40 Low/Med693.80.8648
Windward/Leeward 60-40 Medium591.81.0139
Windward/Leeward 60-40 Med/High541.51.1081
Windward/Leeward 60-40 High516.71.1612
5-Band AP Low643.90.9318
5-Band AP Low/Med533.21.1252
5-Band AP Medium465.61.2886
5-Band AP Med/High429.51.3970
5-Band AP High409.81.4641
5-Band SF Bay Tour - Low809.00.7416
5-Band SF Bay Tour - Low/Med653.80.9177
5-Band SF Bay Tour - Medium557.91.0755
5-Band SF Bay Tour - Med/High509.21.1783
5-Band SF Bay Tour - High484.31.2389
Chicago-Mac Upwind1.1404
Chicago-Mac All Purpose1.1798
Chicago-Mac Downwind1.2254
Bayview-Mac Cove Island1.0981
Bayview-Mac Shore1.1054
Harvest Moon Regatta409.61.4648
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance520.11.1536
Triple Number Coastal/Long Distance Low610.90.9821
Triple Number Coastal/Long Distance Medium472.01.2713
Triple Number Coastal/Long Distance High423.91.4153
Triple Number Windward/Leeward Low802.70.7475
Triple Number Windward/Leeward Medium589.61.0177
Triple Number Windward/Leeward High518.41.1575
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance887.8667.9554.4490.3457.1431.9391.5379.4
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance520.11.1536
Triple Number Coastal/Long Distance Low610.90.9821
Triple Number Coastal/Long Distance Medium472.01.2713
Triple Number Coastal/Long Distance High423.91.4153
Triple Number Windward/Leeward Low802.70.7475
Triple Number Windward/Leeward Medium589.61.0177
Triple Number Windward/Leeward High518.41.1575
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance887.8667.9554.4490.3457.1431.9391.5379.4
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance520.1
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance887.8667.9554.4490.3457.1431.9391.5379.4
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low610.90.9821
Triple Number Coastal/Long Distance Medium472.01.2713
Triple Number Coastal/Long Distance High423.91.4153
Triple Number Windward/Leeward Low802.70.7475
Triple Number Windward/Leeward Medium589.61.0177
Triple Number Windward/Leeward High518.41.1575
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating (Coastal/Long Distance)520.11.1536
Triple Number Coastal/Long Distance Low610.90.9821
Triple Number Coastal/Long Distance Medium472.01.2713
Triple Number Coastal/Long Distance High423.91.4153
Triple Number Windward/Leeward Low802.70.7475
Triple Number Windward/Leeward Medium589.61.0177
Triple Number Windward/Leeward High518.41.1575
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance887.8667.9554.4490.3457.1431.9391.5379.4
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low610.90.9821
Triple Number Coastal/Long Distance Medium472.01.2713
Triple Number Coastal/Long Distance High423.91.4153
Triple Number Windward/Leeward Low802.70.7475
Triple Number Windward/Leeward Medium589.61.0177
Triple Number Windward/Leeward High518.41.1575
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9821
Triple Number Coastal/Long Distance Medium1.2713
Triple Number Coastal/Long Distance High1.4153
Triple Number Windward/Leeward Low0.7475
Triple Number Windward/Leeward Medium1.0177
Triple Number Windward/Leeward High1.1575
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance887.8667.9554.4490.3457.1431.9391.5379.4
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance520.11.1536
Triple Number Coastal/Long Distance Low610.90.9821
Triple Number Coastal/Long Distance Medium472.01.2713
Triple Number Coastal/Long Distance High423.91.4153
Triple Number Windward/Leeward Low802.70.7475
Triple Number Windward/Leeward Medium589.61.0177
Triple Number Windward/Leeward High518.41.1575
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance887.8667.9554.4490.3457.1431.9391.5379.4
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low610.90.9821
Triple Number Coastal/Long Distance Medium472.01.2713
Triple Number Coastal/Long Distance High423.91.4153
Triple Number Windward/Leeward Low802.70.7475
Triple Number Windward/Leeward Medium589.61.0177
Triple Number Windward/Leeward High518.41.1575
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance520.11.1536
Triple Number Coastal/Long Distance Low610.90.9821
Triple Number Coastal/Long Distance Medium472.01.2713
Triple Number Coastal/Long Distance High423.91.4153
Triple Number Windward/Leeward Low802.70.7475
Triple Number Windward/Leeward Medium589.61.0177
Triple Number Windward/Leeward High518.41.1575
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance887.8667.9554.4490.3457.1431.9391.5379.4
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance520.11.1536
Triple Number Coastal/Long Distance Low610.90.9821
Triple Number Coastal/Long Distance Medium472.01.2713
Triple Number Coastal/Long Distance High423.91.4153
Triple Number Windward/Leeward Low802.70.7475
Triple Number Windward/Leeward Medium589.61.0177
Triple Number Windward/Leeward High518.41.1575
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance887.8667.9554.4490.3457.1431.9391.5379.4
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low610.9
Triple Number Coastal/Long Distance Medium472.0
Triple Number Coastal/Long Distance High423.9
Triple Number Windward/Leeward Low802.7
Triple Number Windward/Leeward Medium589.6
Triple Number Windward/Leeward High518.4
Predominantly Upwind516.0
Predominantly Downwind481.0
Predominantly Reaching457.1
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance520.11.1536
Triple Number Coastal/Long Distance Low610.90.9821
Triple Number Coastal/Long Distance Medium472.01.2713
Triple Number Coastal/Long Distance High423.91.4153
Triple Number Windward/Leeward Low802.70.7475
Triple Number Windward/Leeward Medium589.61.0177
Triple Number Windward/Leeward High518.41.1575
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance887.8667.9554.4490.3457.1431.9391.5379.4
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9821
Triple Number Coastal/Long Distance Medium1.2713
Triple Number Coastal/Long Distance High1.4153
Triple Number Windward/Leeward Low0.7475
Triple Number Windward/Leeward Medium1.0177
Triple Number Windward/Leeward High1.1575
Coastal/Long Distance1.1536
Predominantly Upwind1.1628
Predominantly Downwind1.2473
For information
General Purpose Handicap (GPH)533.6
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.9821
Tretall Distanseseilas Mellomvind1.2713
Tretall Distanseseilas Mye vind1.4153
Tretall Pølsebane Lite vind0.7475
Tretall Pølsebane Mellomvind1.0177
Tretall Pølsebane Mye vind1.1575
Distanseseilas ett tall1.2622
Enkeltall Motvind1.1628
Enkeltall Medvind1.2473
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low610.90.9821
Triple Number Coastal/Long Distance Medium472.01.2713
Triple Number Coastal/Long Distance High423.91.4153
Triple Number Windward/Leeward Low802.70.7475
Triple Number Windward/Leeward Medium589.61.0177
Triple Number Windward/Leeward High518.41.1575
Coastal/Long Distance520.11.1536
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind516.01.1628
Predominantly Downwind481.01.2473
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore485.91.2349
Cape Doctor Coastal399.61.5013
Triple Number Coastal/Long Distance Low610.90.9821
Triple Number Coastal/Long Distance Medium472.01.2713
Triple Number Coastal/Long Distance High423.91.4153
Triple Number Windward/Leeward Low802.70.7475
Triple Number Windward/Leeward Medium589.61.0177
Triple Number Windward/Leeward High518.41.1575
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9821
Triple Number Coastal/Long Distance Medium1.2713
Triple Number Coastal/Long Distance High1.4153
Triple Number Windward/Leeward Low0.7475
Triple Number Windward/Leeward Medium1.0177
Triple Number Windward/Leeward High1.1575
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.9821
Triple Number Coastal/Long Distance Medium1.2713
Triple Number Coastal/Long Distance High1.4153
Triple Number Windward/Leeward Low0.7475
Triple Number Windward/Leeward Medium1.0177
Triple Number Windward/Leeward High1.1575
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance520.11.1536
Triple Number Coastal/Long Distance Low610.90.9821
Triple Number Coastal/Long Distance Medium472.01.2713
Triple Number Coastal/Long Distance High423.91.4153
Triple Number Windward/Leeward Low802.70.7475
Triple Number Windward/Leeward Medium589.61.0177
Triple Number Windward/Leeward High518.41.1575
Predominantly Upwind516.01.1628
Predominantly Downwind481.01.2473
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance887.8667.9554.4490.3457.1431.9391.5379.4
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance520.11.1536
Triple Number Coastal/Long Distance Low610.90.9821
Triple Number Coastal/Long Distance Medium472.01.2713
Triple Number Coastal/Long Distance High423.91.4153
Triple Number Windward/Leeward Low802.70.7475
Triple Number Windward/Leeward Medium589.61.0177
Triple Number Windward/Leeward High518.41.1575
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance887.8667.9554.4490.3457.1431.9391.5379.4
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low611.00.9821
Triple Number AP Medium472.01.2712
Triple Number AP High423.91.4153
Triple Number Windward/Leeward Low802.70.7475
Triple Number Windward/Leeward Medium589.61.0177
Triple Number Windward/Leeward High518.41.1575
Single Number Predominant Upwind515.21.1646
Single Number Predominant Reaching448.61.3375
Single Number Predominant Downwind481.61.2459
Predominant Upwind - Low681.40.8805
Predominant Upwind - Low/Med567.01.0582
Predominant Upwind - Medium499.31.2016
Predominant Upwind - Med/High466.61.2860
Predominant Upwind - High451.51.3289
Predominant Downwind Low667.60.8987
Predominant Downwind Low/Med542.71.1056
Predominant Downwind Medium463.71.2941
Predominant Downwind Med/High418.11.4352
Predominant Downwind High387.61.5479
Predominant Reaching Low588.31.0198
Predominant Reaching Low/Med493.41.2160
Predominant Reaching Medium435.81.3769
Predominant Reaching Med/High403.11.4885
Predominant Reaching High382.71.5679
SA/DSPL Upwind22.08SA/DSPL Downwind48.68
Scoring OptionTODTOT
5-Band Windward/Leeward Low851.30.7048
5-Band Windward/Leeward Low/Med684.30.8768
5-Band Windward/Leeward Medium579.81.0349
5-Band Windward/Leeward Med/High526.71.1392
5-Band Windward/Leeward High498.51.2035
Windward/Leeward 60-40 Low859.30.6982
Windward/Leeward 60-40 Low/Med693.80.8648
Windward/Leeward 60-40 Medium591.81.0139
Windward/Leeward 60-40 Med/High541.51.1081
Windward/Leeward 60-40 High516.71.1612
5-Band AP Low643.90.9318
5-Band AP Low/Med533.21.1252
5-Band AP Medium465.61.2886
5-Band AP Med/High429.51.3970
5-Band AP High409.81.4641
5-Band SF Bay Tour - Low809.00.7416
5-Band SF Bay Tour - Low/Med653.80.9177
5-Band SF Bay Tour - Medium557.91.0755
5-Band SF Bay Tour - Med/High509.21.1783
5-Band SF Bay Tour - High484.31.2389
Chicago-Mac Upwind1.1404
Chicago-Mac All Purpose1.1798
Chicago-Mac Downwind1.2254
Bayview-Mac Cove Island1.0981
Bayview-Mac Shore1.1054
Harvest Moon Regatta409.61.4648

Club
Certificate
2024

Boat

Vesper

BEL 4801

Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassSWAN 48Measurement20/06/2024HINPlan reviewHull constructionCoredCarbon RudderNoLight stanchionsNoTrim tabNo
LOA14.767Max. Beam4.564Draft2.427Displacement15,176Wetted area49.56IMS L14.203LSM014.183Acc. length14.767Sink (kg/mm) 38.20
VCGD0.211VCGM0.100RM Rated (kg·m) 443.8Limit of positive stability(°) N/AStability IndexN/ADefault crew weight1,133Declared crew weight1,105
PROPELLER
Propeller TypeFolding 3 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.508PBWPIPA0.0042
EDL3.100ST10.065ST20.180
ST30.180ST40.110ST50.310
RIG
Forestay tensionAftInner stayNone FittedMast materialCarbonSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunners/Checkstays1Spreaders2Rotating mastNo
P19.900IG20.706ISP21.826MDT10.150MDL10.330MDT2MDL2TLMWGO
E6.600J5.660BAS1.936FSD0.049SFJ0.460SPLWPLTPS7.070BD0.250MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date20/06/2024
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible

Club
Certificate
2024

Boat

Vesper

BEL 4801

MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment20240.701.522.393.935.2875.81
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment20240.051.923.736.829.2211.1321.31NoYes0133.5320240.100.801.543.014.495.9020.25NoNo 60.79
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment202423.4820.5021.9912.4811.55108%225.29
CRUISER/RACER REQUIREMENTS*
Accommodation length14.8 mTable area0.66 m²Headroom1.90 mMinimum number of berths6Personal gear stowage0.24 m³Fresh water capacity264 lMinimum number of seats in cockpit6Food stowage0.36 m³Fuel capacity146 l
*This list refers to the calculated requirements. See IMS Appendix 1 for the complete list of requirements.