Club
Certificate
2023

Boat

IDRA

ESP-11072_C

RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat Angles43.8°41.2°39.6°38.1°37.5°37.0°37.2°
Beat VMG3.314.034.544.854.995.065.10
52°5.065.986.536.826.987.057.13
60°5.346.226.706.987.167.267.36
75°5.516.386.847.147.397.587.79
90°5.396.336.927.287.517.748.17
110°5.336.437.037.477.888.248.80
120°5.156.276.947.407.848.289.22
135°4.625.766.607.107.537.978.96
150°3.925.005.896.647.107.498.31
Run VMG3.394.335.115.846.436.917.66
Gybe Angles144.4°146.9°151.4°157.7°170.0°177.2°177.2°

APH: 580.7

CDL: 8.581

GPH: 653.4

CertNo: 110721

BOAT
ClassFIRST 31.7DesignerFINOTBuilderBENETEAUAge date03/2000Series date09/1998Offset fileFIRST317.offData fileE11072_C
HULL
Length Overall9.490 mMaximum Beam3.212 mDraft1.919 mDisplacement3,712 kgDLR5.0964IMS DivisionCruiser/RacerDynamic Allowance0.250%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.400m
CREW
Maximum weight592 kgMinimum weight444 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail25.9726.64Headsail Luffed31.5131.51Headsail FlyingSymmetric70.6670.66Asymmetric70.6670.66 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail7.41Storm Jib6.76Heavy Weather Jib18.23
SAIL LIMITS
Headsails1 * Woven polyester sails  Spinnakers4 * Asymmetric SHALL NOT be tacked on the pole
STABILITY
Righting MomentN/AStability IndexN/A
COMMENTS
MEDIDAS ESTIMADAS.
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  03510002CUDIssued on 23/02/2023Valid until 31/12/2023
VPP ver: 2023 1.00 | © ORC | www.orc.org

Club
Certificate
2023

Boat

IDRA

ESP-11072_C

RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG1089.2894.1793.8741.6721.2710.9706.1
52°711.4601.7551.7527.7516.1510.3505.3
60°674.7578.5537.0515.5502.6495.7489.0
75°653.6564.0526.0504.0487.3474.7461.8
90°668.3568.5520.1494.7479.3465.3440.8
110°675.3559.6511.8482.1457.1437.0409.2
120°698.5574.0518.5486.6459.0434.6390.6
135°778.7624.7545.5506.7478.1451.9401.7
150°919.4720.5611.0542.5507.3480.6433.1
Run VMG1061.6832.0705.0616.4560.3521.0469.9
Selected Courses
Windward / Leeward1075.4863.0749.4679.0640.7616.0588.0
All purpose827.8678.0602.8559.5534.4516.7491.7
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward712.80.8418
All purpose580.71.0332
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low752.90.7969
Triple Number Coastal/Long Distance Medium577.51.0389
Triple Number Coastal/Long Distance High511.81.1724
Triple Number Windward/Leeward Low969.30.6190
Triple Number Windward/Leeward Medium708.20.8472
Triple Number Windward/Leeward High611.70.9809
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance631.70.9498
Triple Number Coastal/Long Distance Low752.90.7969
Triple Number Coastal/Long Distance Medium577.51.0389
Triple Number Coastal/Long Distance High511.81.1724
Triple Number Windward/Leeward Low969.30.6190
Triple Number Windward/Leeward Medium708.20.8472
Triple Number Windward/Leeward High611.70.9809
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.1812.5677.4596.1554.6522.2469.0
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7425
Downwind "popa"0.8812
70% up, 30% down "Ilhabela"0.7793
30% up, 70% down "Ilhabela-inverso"0.8344
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low752.90.7969
Triple Number Coastal/Long Distance Medium577.51.0389
Triple Number Coastal/Long Distance High511.81.1724
Triple Number Windward/Leeward Low969.30.6190
Triple Number Windward/Leeward Medium708.20.8472
Triple Number Windward/Leeward High611.70.9809
Predominantly Upwind626.90.9571
Predominantly Downwind592.51.0126
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low752.90.7969
Triple Number All Purpose Medium577.51.0389
Triple Number All Purpose High511.81.1724
Triple Number Windward/Leeward Low969.30.6190
Triple Number Windward/Leeward Medium708.20.8472
Triple Number Windward/Leeward High611.70.9809
Predominantly Upwind626.90.9571
Predominantly Downwind592.51.0126
Predominantly Upwind Low834.90.7186
Predominantly Upwind Medium644.80.9305
Predominantly Upwind High597.81.0037
Predominantly Downwind Low826.30.7262
Predominantly Downwind Medium589.11.0185
Predominantly Downwind High487.21.2316
Chicago-Mac Upwind0.9392
Chicago-Mac All Purpose0.9634
Chicago-Mac Downwind0.9937
Bayview-Mac Cove Island0.8943
Bayview-Mac Shore0.9042
Victoria-Maui1.0657
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance631.70.9498
Triple Number Coastal/Long Distance Low752.90.7969
Triple Number Coastal/Long Distance Medium577.51.0389
Triple Number Coastal/Long Distance High511.81.1724
Triple Number Windward/Leeward Low969.30.6190
Triple Number Windward/Leeward Medium708.20.8472
Triple Number Windward/Leeward High611.70.9809
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.1812.5677.4596.1554.6522.2469.0
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance631.70.9498
Triple Number Coastal/Long Distance Low752.90.7969
Triple Number Coastal/Long Distance Medium577.51.0389
Triple Number Coastal/Long Distance High511.81.1724
Triple Number Windward/Leeward Low969.30.6190
Triple Number Windward/Leeward Medium708.20.8472
Triple Number Windward/Leeward High611.70.9809
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.1812.5677.4596.1554.6522.2469.0
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance631.7
Triple Number Coastal/Long Distance Low752.9
Triple Number Coastal/Long Distance Medium577.5
Triple Number Coastal/Long Distance High511.8
Triple Number Windward/Leeward Low969.3
Triple Number Windward/Leeward Medium708.2
Triple Number Windward/Leeward High611.7
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.1812.5677.4596.1554.6522.2469.0
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance631.70.9498
Triple Number Coastal/Long Distance Low752.90.7969
Triple Number Coastal/Long Distance Medium577.51.0389
Triple Number Coastal/Long Distance High511.81.1724
Triple Number Windward/Leeward Low969.30.6190
Triple Number Windward/Leeward Medium708.20.8472
Triple Number Windward/Leeward High611.70.9809
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.1812.5677.4596.1554.6522.2469.0
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)631.70.9498
Triple Number Coastal/Long Distance Low752.90.7969
Triple Number Coastal/Long Distance Medium577.51.0389
Triple Number Coastal/Long Distance High511.81.1724
Triple Number Windward/Leeward Low969.30.6190
Triple Number Windward/Leeward Medium708.20.8472
Triple Number Windward/Leeward High611.70.9809
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.1812.5677.4596.1554.6522.2469.0
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low752.90.7969
Triple Number Coastal/Long Distance Medium577.51.0389
Triple Number Coastal/Long Distance High511.81.1724
Triple Number Windward/Leeward Low969.30.6190
Triple Number Windward/Leeward Medium708.20.8472
Triple Number Windward/Leeward High611.70.9809
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7969
Triple Number Coastal/Long Distance Medium1.0389
Triple Number Coastal/Long Distance High1.1724
Triple Number Windward/Leeward Low0.6190
Triple Number Windward/Leeward Medium0.8472
Triple Number Windward/Leeward High0.9809
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.1812.5677.4596.1554.6522.2469.0
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance631.70.9498
Triple Number Coastal/Long Distance Low752.90.7969
Triple Number Coastal/Long Distance Medium577.51.0389
Triple Number Coastal/Long Distance High511.81.1724
Triple Number Windward/Leeward Low969.30.6190
Triple Number Windward/Leeward Medium708.20.8472
Triple Number Windward/Leeward High611.70.9809
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.1812.5677.4596.1554.6522.2469.0
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low752.90.7969
Triple Number Coastal/Long Distance Medium577.51.0389
Triple Number Coastal/Long Distance High511.81.1724
Triple Number Windward/Leeward Low969.30.6190
Triple Number Windward/Leeward Medium708.20.8472
Triple Number Windward/Leeward High611.70.9809
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance631.70.9498
Triple Number Coastal/Long Distance Low752.90.7969
Triple Number Coastal/Long Distance Medium577.51.0389
Triple Number Coastal/Long Distance High511.81.1724
Triple Number Windward/Leeward Low969.30.6190
Triple Number Windward/Leeward Medium708.20.8472
Triple Number Windward/Leeward High611.70.9809
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.1812.5677.4596.1554.6522.2469.0
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low969.30.6190
Triple Number Windward/Leeward Medium708.20.8472
Triple Number Windward/Leeward High611.70.9809
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.1812.5677.4596.1554.6522.2469.0
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low752.9
Triple Number Coastal/Long Distance Medium577.5
Triple Number Coastal/Long Distance High511.8
Triple Number Windward/Leeward Low969.3
Triple Number Windward/Leeward Medium708.2
Triple Number Windward/Leeward High611.7
Predominantly Upwind626.9
Predominantly Downwind592.5
Predominantly Reaching567.7
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance631.70.9498
Triple Number Coastal/Long Distance Low752.90.7969
Triple Number Coastal/Long Distance Medium577.51.0389
Triple Number Coastal/Long Distance High511.81.1724
Triple Number Windward/Leeward Low969.30.6190
Triple Number Windward/Leeward Medium708.20.8472
Triple Number Windward/Leeward High611.70.9809
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.1812.5677.4596.1554.6522.2469.0
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7969
Triple Number Coastal/Long Distance Medium1.0389
Triple Number Coastal/Long Distance High1.1724
Triple Number Windward/Leeward Low0.6190
Triple Number Windward/Leeward Medium0.8472
Triple Number Windward/Leeward High0.9809
Coastal/Long Distance0.9498
Predominantly Upwind0.9571
Predominantly Downwind1.0126
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.7969
Tretall Distanseseilas Mellomvind1.0389
Tretall Distanseseilas Mye vind1.1724
Tretall Pølsebane Lite vind0.6190
Tretall Pølsebane Mellomvind0.8472
Tretall Pølsebane Mye vind0.9809
Distanseseilas ett tall (OSN 8-16kn)0.9498
Distanseseilas ett tall (APH 6-20kn)1.0332
Enkeltall Motvind0.9571
Enkeltall Medvind1.0126
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low752.90.7969
Triple Number Coastal/Long Distance Medium577.51.0389
Triple Number Coastal/Long Distance High511.81.1724
Triple Number Windward/Leeward Low969.30.6190
Triple Number Windward/Leeward Medium708.20.8472
Triple Number Windward/Leeward High611.70.9809
Coastal/Long Distance631.70.9498
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind626.90.9571
Predominantly Downwind592.51.0126
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore596.41.0061
Cape Doctor Coastal499.21.2019
Triple Number Coastal/Long Distance Low752.90.7969
Triple Number Coastal/Long Distance Medium577.51.0389
Triple Number Coastal/Long Distance High511.81.1724
Triple Number Windward/Leeward Low969.30.6190
Triple Number Windward/Leeward Medium708.20.8472
Triple Number Windward/Leeward High611.70.9809
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7969
Triple Number Coastal/Long Distance Medium1.0389
Triple Number Coastal/Long Distance High1.1724
Triple Number Windward/Leeward Low0.6190
Triple Number Windward/Leeward Medium0.8472
Triple Number Windward/Leeward High0.9809
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7969
Triple Number Coastal/Long Distance Medium1.0389
Triple Number Coastal/Long Distance High1.1724
Triple Number Windward/Leeward Low0.6190
Triple Number Windward/Leeward Medium0.8472
Triple Number Windward/Leeward High0.9809
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance631.70.9498
Triple Number Coastal/Long Distance Low752.90.7969
Triple Number Coastal/Long Distance Medium577.51.0389
Triple Number Coastal/Long Distance High511.81.1724
Triple Number Windward/Leeward Low969.30.6190
Triple Number Windward/Leeward Medium708.20.8472
Triple Number Windward/Leeward High611.70.9809
Predominantly Upwind626.90.9571
Predominantly Downwind592.51.0126
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.1812.5677.4596.1554.6522.2469.0
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance631.70.9498
Triple Number Coastal/Long Distance Low752.90.7969
Triple Number Coastal/Long Distance Medium577.51.0389
Triple Number Coastal/Long Distance High511.81.1724
Triple Number Windward/Leeward Low969.30.6190
Triple Number Windward/Leeward Medium708.20.8472
Triple Number Windward/Leeward High611.70.9809
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1074.1812.5677.4596.1554.6522.2469.0
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low752.90.7969
Triple Number All Purpose Medium577.51.0389
Triple Number All Purpose High511.81.1724
Triple Number Windward/Leeward Low969.30.6190
Triple Number Windward/Leeward Medium708.20.8472
Triple Number Windward/Leeward High611.70.9809
Predominantly Upwind626.90.9571
Predominantly Downwind592.51.0126
Predominantly Upwind Low834.90.7186
Predominantly Upwind Medium644.80.9305
Predominantly Upwind High597.81.0037
Predominantly Downwind Low826.30.7262
Predominantly Downwind Medium589.11.0185
Predominantly Downwind High487.21.2316
Chicago-Mac Upwind0.9392
Chicago-Mac All Purpose0.9634
Chicago-Mac Downwind0.9937
Bayview-Mac Cove Island0.8943
Bayview-Mac Shore0.9042
Harvest Moon Regatta503.51.1916
Victoria-Maui1.0657
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy599.71.0005
San Francisco Bay Medium701.60.8552
Predominantly Reaching1.0838
Predominantly Reaching Low0.8773
Predominantly Reaching Medium1.0924
Predominantly Reaching High1.2469
Windward/Leeward 60-40 Low973.70.6162
Windward/Leeward 60-40 Medium728.10.8240
Windward/Leeward 60-40 High645.70.9292
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1059.10.5665
5-Band Low / Medium884.20.6786
5-Band Medium694.50.8640
5-Band Medium / High620.70.9666
5-Band High592.81.0121
ORC Ref  03510002CUDIssued on 23/02/2023Valid until 31/12/2023
VPP ver: 2023 1.00 | © ORC | www.orc.org

Club
Certificate
2023

Boat

IDRA

ESP-11072_C

RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassFIRST 31.7MeasurementHINPlan reviewHull constructionSolidCarbon RudderNoLight stanchionsNoTrim tabNo
LOA9.490Max. Beam3.212Draft1.919Displacement3,712Wetted area20.56IMS L9.053LSM08.996Acc. length9.610Sink (kg/mm) 16.00
VCGD0.020VCGM-0.017RM Rated (kg·m) 88.4Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.400PBWPIPA0.0032
EDL2.540ST10.048ST20.170
ST30.170ST40.098ST50.308
RIG
Forestay tensionAftInner stayNone FittedCarbon mastNoHeadsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders2Rotating mastNo
P10.850IG11.620ISP11.890MDT10.100MDL10.110MDT2MDL2TLMWGO
E3.900J3.510BAS1.720FSD0.040SFJ0.040SPL4.000WPLTPS4.000BDMWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered90.0Flotation Date01/01/2010MeasurerComment
SFFP0.303FFMFF1.224LCFcl5.424SG
SAFP8.732FAMFA0.938LCFsh5.656HBI1.081
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03510002CUDIssued on 23/02/2023Valid until 31/12/2023
VPP ver: 2023 1.00 | © ORC | www.orc.org

Club
Certificate
2023

Boat

IDRA

ESP-11072_C

RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment125.97
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentORC5.10NoNo 31.51
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentORC0.0070.66
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment111.78NaN70.66
ORC Ref  03510002CUDIssued on 23/02/2023Valid until 31/12/2023
VPP ver: 2023 1.00 | © ORC | www.orc.org