Club
Certificate
2023

Boat

Prospero

NOR 13987

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 Angles43.8°41.8°40.2°39.4°39.0°38.8°39.4°
Beat VMG3.093.794.284.604.754.824.84
52°4.745.666.276.626.816.896.95
60°5.005.916.486.817.017.117.19
75°5.156.086.656.997.227.417.62
90°5.376.376.907.157.317.547.96
110°5.456.527.097.497.858.108.50
120°5.296.397.037.497.928.349.01
135°4.785.916.727.217.678.149.16
150°4.075.156.036.647.017.337.99
Run VMG3.534.465.235.756.076.587.30
Gybe Angles145.1°147.8°147.8°148.7°150.5°173.6°176.3°

APH: 593.8

CDL: 8.164

GPH: 666.9

CertNo: 21042

BOAT
ClassElan 310DesignerHumphreys Yacht DeBuilderElan MarineAge date01/2010Series date01/2009Offset fileelan310.offData file21042
HULL
Length Overall9.250 mMaximum Beam3.198 mDraft1.923 mDisplacement4,175 kgDLR5.9459IMS DivisionCruiser/RacerDynamic Allowance0.240%Age Allowance0.455%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.340m
CREW
Maximum weight582 kgMinimum weight436 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail28.6529.11Headsail Luffed23.5623.56Headsail FlyingSymmetricAsymmetric84.9184.91 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail8.66Storm Jib7.21Heavy Weather Jib19.46
SAIL LIMITS
Headsails5  Spinnakers4 * Asymmetric SHALL NOT be tacked on the pole
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  03440002LRRIssued on 16/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

Prospero

NOR 13987

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 VMG1163.9950.8840.2781.8758.1747.0744.0
52°759.7636.5574.4543.6529.0522.7518.2
60°720.6609.3555.4528.3513.9506.5500.5
75°699.1592.1541.3515.3498.3485.9472.6
90°669.9564.8521.7503.7492.6477.7452.0
110°660.4551.9507.6480.4458.7444.4423.4
120°680.0563.3512.0480.9454.3431.7399.7
135°752.6608.9535.8499.1469.5442.5393.0
150°883.8698.9596.7542.3513.4491.5450.4
Run VMG1020.5807.0689.0626.2592.6546.8493.1
Selected Courses
Windward / Leeward1092.2878.9764.6704.0675.4646.9618.6
All purpose841.8689.2612.4572.2550.0531.9509.0
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward737.30.8138
All purpose593.81.0105
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low765.50.7838
Triple Number Coastal/Long Distance Medium589.81.0173
Triple Number Coastal/Long Distance High527.81.1367
Triple Number Windward/Leeward Low985.50.6088
Triple Number Windward/Leeward Medium731.60.8201
Triple Number Windward/Leeward High643.40.9325
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance646.30.9284
Triple Number Coastal/Long Distance Low765.50.7838
Triple Number Coastal/Long Distance Medium589.81.0173
Triple Number Coastal/Long Distance High527.81.1367
Triple Number Windward/Leeward Low985.50.6088
Triple Number Windward/Leeward Medium731.60.8201
Triple Number Windward/Leeward High643.40.9325
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1085.0824.9689.1611.6571.6537.1484.2
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7017
Downwind "popa"0.8795
70% up, 30% down "Ilhabela"0.7470
30% up, 70% down "Ilhabela-inverso"0.8174
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low765.50.7838
Triple Number Coastal/Long Distance Medium589.81.0173
Triple Number Coastal/Long Distance High527.81.1367
Triple Number Windward/Leeward Low985.50.6088
Triple Number Windward/Leeward Medium731.60.8201
Triple Number Windward/Leeward High643.40.9325
Predominantly Upwind647.60.9265
Predominantly Downwind596.71.0056
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low765.50.7838
Triple Number All Purpose Medium589.81.0173
Triple Number All Purpose High527.81.1367
Triple Number Windward/Leeward Low985.50.6088
Triple Number Windward/Leeward Medium731.60.8201
Triple Number Windward/Leeward High643.40.9325
Predominantly Upwind647.60.9265
Predominantly Downwind596.71.0056
Predominantly Upwind Low869.30.6902
Predominantly Upwind Medium672.60.8920
Predominantly Upwind High621.90.9648
Predominantly Downwind Low816.90.7345
Predominantly Downwind Medium590.21.0167
Predominantly Downwind High500.21.1995
Chicago-Mac Upwind0.9086
Chicago-Mac All Purpose0.9455
Chicago-Mac Downwind0.9892
Bayview-Mac Cove Island0.8760
Bayview-Mac Shore0.8803
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching560.61.0703
Predominantly Reaching Low686.30.8743
Predominantly Reaching Medium554.11.0829
Predominantly Reaching High488.11.2293
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1075.80.5577
5-Band Low / Medium900.90.6660
5-Band Medium719.20.8343
5-Band Medium / High651.90.9204
5-Band High623.50.9624
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance646.30.9284
Triple Number Coastal/Long Distance Low765.50.7838
Triple Number Coastal/Long Distance Medium589.81.0173
Triple Number Coastal/Long Distance High527.81.1367
Triple Number Windward/Leeward Low985.50.6088
Triple Number Windward/Leeward Medium731.60.8201
Triple Number Windward/Leeward High643.40.9325
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1085.0824.9689.1611.6571.6537.1484.2
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance646.30.9284
Triple Number Coastal/Long Distance Low765.50.7838
Triple Number Coastal/Long Distance Medium589.81.0173
Triple Number Coastal/Long Distance High527.81.1367
Triple Number Windward/Leeward Low985.50.6088
Triple Number Windward/Leeward Medium731.60.8201
Triple Number Windward/Leeward High643.40.9325
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1085.0824.9689.1611.6571.6537.1484.2
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance646.3
Triple Number Coastal/Long Distance Low765.5
Triple Number Coastal/Long Distance Medium589.8
Triple Number Coastal/Long Distance High527.8
Triple Number Windward/Leeward Low985.5
Triple Number Windward/Leeward Medium731.6
Triple Number Windward/Leeward High643.4
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1085.0824.9689.1611.6571.6537.1484.2
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance646.30.9284
Triple Number Coastal/Long Distance Low765.50.7838
Triple Number Coastal/Long Distance Medium589.81.0173
Triple Number Coastal/Long Distance High527.81.1367
Triple Number Windward/Leeward Low985.50.6088
Triple Number Windward/Leeward Medium731.60.8201
Triple Number Windward/Leeward High643.40.9325
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1085.0824.9689.1611.6571.6537.1484.2
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)646.30.9284
Triple Number Coastal/Long Distance Low765.50.7838
Triple Number Coastal/Long Distance Medium589.81.0173
Triple Number Coastal/Long Distance High527.81.1367
Triple Number Windward/Leeward Low985.50.6088
Triple Number Windward/Leeward Medium731.60.8201
Triple Number Windward/Leeward High643.40.9325
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1085.0824.9689.1611.6571.6537.1484.2
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low765.50.7838
Triple Number Coastal/Long Distance Medium589.81.0173
Triple Number Coastal/Long Distance High527.81.1367
Triple Number Windward/Leeward Low985.50.6088
Triple Number Windward/Leeward Medium731.60.8201
Triple Number Windward/Leeward High643.40.9325
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7838
Triple Number Coastal/Long Distance Medium1.0173
Triple Number Coastal/Long Distance High1.1367
Triple Number Windward/Leeward Low0.6088
Triple Number Windward/Leeward Medium0.8201
Triple Number Windward/Leeward High0.9325
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1085.0824.9689.1611.6571.6537.1484.2
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance646.30.9284
Triple Number Coastal/Long Distance Low765.50.7838
Triple Number Coastal/Long Distance Medium589.81.0173
Triple Number Coastal/Long Distance High527.81.1367
Triple Number Windward/Leeward Low985.50.6088
Triple Number Windward/Leeward Medium731.60.8201
Triple Number Windward/Leeward High643.40.9325
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1085.0824.9689.1611.6571.6537.1484.2
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low765.50.7838
Triple Number Coastal/Long Distance Medium589.81.0173
Triple Number Coastal/Long Distance High527.81.1367
Triple Number Windward/Leeward Low985.50.6088
Triple Number Windward/Leeward Medium731.60.8201
Triple Number Windward/Leeward High643.40.9325
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance646.30.9284
Triple Number Coastal/Long Distance Low765.50.7838
Triple Number Coastal/Long Distance Medium589.81.0173
Triple Number Coastal/Long Distance High527.81.1367
Triple Number Windward/Leeward Low985.50.6088
Triple Number Windward/Leeward Medium731.60.8201
Triple Number Windward/Leeward High643.40.9325
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1085.0824.9689.1611.6571.6537.1484.2
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low985.50.6088
Triple Number Windward/Leeward Medium731.60.8201
Triple Number Windward/Leeward High643.40.9325
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1085.0824.9689.1611.6571.6537.1484.2
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low765.5
Triple Number Coastal/Long Distance Medium589.8
Triple Number Coastal/Long Distance High527.8
Triple Number Windward/Leeward Low985.5
Triple Number Windward/Leeward Medium731.6
Triple Number Windward/Leeward High643.4
Predominantly Upwind647.6
Predominantly Downwind596.7
Predominantly Reaching572.7
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance646.30.9284
Triple Number Coastal/Long Distance Low765.50.7838
Triple Number Coastal/Long Distance Medium589.81.0173
Triple Number Coastal/Long Distance High527.81.1367
Triple Number Windward/Leeward Low985.50.6088
Triple Number Windward/Leeward Medium731.60.8201
Triple Number Windward/Leeward High643.40.9325
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1085.0824.9689.1611.6571.6537.1484.2
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7838
Triple Number Coastal/Long Distance Medium1.0173
Triple Number Coastal/Long Distance High1.1367
Triple Number Windward/Leeward Low0.6088
Triple Number Windward/Leeward Medium0.8201
Triple Number Windward/Leeward High0.9325
Coastal/Long Distance0.9284
Predominantly Upwind0.9265
Predominantly Downwind1.0056
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.7838
Tretall Distanseseilas Mellomvind1.0173
Tretall Distanseseilas Mye vind1.1367
Tretall Pølsebane Lite vind0.6088
Tretall Pølsebane Mellomvind0.8201
Tretall Pølsebane Mye vind0.9325
Distanseseilas ett tall (OSN 8-16kn)0.9284
Distanseseilas ett tall (APH 6-20kn)1.0105
Enkeltall Motvind0.9265
Enkeltall Medvind1.0056
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low765.50.7838
Triple Number Coastal/Long Distance Medium589.81.0173
Triple Number Coastal/Long Distance High527.81.1367
Triple Number Windward/Leeward Low985.50.6088
Triple Number Windward/Leeward Medium731.60.8201
Triple Number Windward/Leeward High643.40.9325
Coastal/Long Distance646.30.9284
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind647.60.9265
Predominantly Downwind596.71.0056
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore627.10.9568
Cape Doctor Coastal515.91.1631
Triple Number Coastal/Long Distance Low765.50.7838
Triple Number Coastal/Long Distance Medium589.81.0173
Triple Number Coastal/Long Distance High527.81.1367
Triple Number Windward/Leeward Low985.50.6088
Triple Number Windward/Leeward Medium731.60.8201
Triple Number Windward/Leeward High643.40.9325
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7838
Triple Number Coastal/Long Distance Medium1.0173
Triple Number Coastal/Long Distance High1.1367
Triple Number Windward/Leeward Low0.6088
Triple Number Windward/Leeward Medium0.8201
Triple Number Windward/Leeward High0.9325
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7838
Triple Number Coastal/Long Distance Medium1.0173
Triple Number Coastal/Long Distance High1.1367
Triple Number Windward/Leeward Low0.6088
Triple Number Windward/Leeward Medium0.8201
Triple Number Windward/Leeward High0.9325
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance646.30.9284
Triple Number Coastal/Long Distance Low765.50.7838
Triple Number Coastal/Long Distance Medium589.81.0173
Triple Number Coastal/Long Distance High527.81.1367
Triple Number Windward/Leeward Low985.50.6088
Triple Number Windward/Leeward Medium731.60.8201
Triple Number Windward/Leeward High643.40.9325
Predominantly Upwind647.60.9265
Predominantly Downwind596.71.0056
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1085.0824.9689.1611.6571.6537.1484.2
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance646.30.9284
Triple Number Coastal/Long Distance Low765.50.7838
Triple Number Coastal/Long Distance Medium589.81.0173
Triple Number Coastal/Long Distance High527.81.1367
Triple Number Windward/Leeward Low985.50.6088
Triple Number Windward/Leeward Medium731.60.8201
Triple Number Windward/Leeward High643.40.9325
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1085.0824.9689.1611.6571.6537.1484.2
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low765.50.7838
Triple Number All Purpose Medium589.81.0173
Triple Number All Purpose High527.81.1367
Triple Number Windward/Leeward Low985.50.6088
Triple Number Windward/Leeward Medium731.60.8201
Triple Number Windward/Leeward High643.40.9325
Predominantly Upwind647.60.9265
Predominantly Downwind596.71.0056
Predominantly Upwind Low869.30.6902
Predominantly Upwind Medium672.60.8920
Predominantly Upwind High621.90.9648
Predominantly Downwind Low816.90.7345
Predominantly Downwind Medium590.21.0167
Predominantly Downwind High500.21.1995
Chicago-Mac Upwind0.9086
Chicago-Mac All Purpose0.9455
Chicago-Mac Downwind0.9892
Bayview-Mac Cove Island0.8760
Bayview-Mac Shore0.8803
Harvest Moon Regatta512.71.1703
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy624.80.9603
San Francisco Bay Medium720.70.8325
Predominantly Reaching560.61.0703
Predominantly Reaching Low686.30.8743
Predominantly Reaching Medium554.11.0829
Predominantly Reaching High488.11.2293
Windward/Leeward 60-40 Low999.90.6001
Windward/Leeward 60-40 Medium758.10.7915
Windward/Leeward 60-40 High679.20.8834
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1075.80.5577
5-Band Low / Medium900.90.6660
5-Band Medium719.20.8343
5-Band Medium / High651.90.9204
5-Band High623.50.9624
ORC Ref  03440002LRRIssued on 16/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

Prospero

NOR 13987

Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassElan 310MeasurementHINPlan reviewHull constructionLightCarbon RudderNoLight stanchionsNoTrim tabNo
LOA9.250Max. Beam3.198Draft1.923Displacement4,175Wetted area20.92IMS L9.032LSM08.887Acc. length9.250Sink (kg/mm) 16.35
VCGD0.131VCGM0.158RM Rated (kg·m) 76.6Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.340PBWPIPA0.0038
EDL1.873ST10.065ST20.180
ST30.180ST40.180ST50.329
RIG
Forestay tensionAftInner stayNone FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders2Rotating mastNo
P11.980IG11.960ISP12.895MDT10.088MDL10.155MDT20.087MDL20.110TL0.000MW0.144GO0.157
E4.130J3.580BAS1.416FSD0.000SFJ0.000SPL4.386WPLTPS4.800BDMWT102.30MCG4.490
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered0.131Flotation Date01/01/2015MeasurerComment
SFFP0.375FFMFF1.237LCFcl5.272SG1.0050
SAFP9.161FAMFA0.984LCFsh5.488HBI1.105
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03440002LRRIssued on 16/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

Prospero

NOR 13987

Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment330-2019081215050.120.781.442.563.4428.6512/08/2019
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment329-2010052612100.000.000.000.000.003.8112.15NoNo 23.5626/05/2010330-2019081215060.050.430.851.702.533.2912.00NoNo 20.1712/08/2019
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment329-20100526121214.5812.4613.527.726.80114%84.9126/05/2010
ORC Ref  03440002LRRIssued on 16/05/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org