Club
Certificate
2023

Boat

MAMBRU

ESP-6684_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 Angles43.0°40.8°39.4°38.4°38.1°38.1°38.4°
Beat VMG3.454.164.614.814.904.954.93
52°5.236.126.606.826.926.977.00
60°5.506.346.777.007.117.187.24
75°5.686.486.917.187.387.517.65
90°5.586.446.927.247.527.768.08
110°5.306.397.007.427.788.098.48
120°5.156.266.937.387.808.208.96
135°4.635.756.597.107.537.978.96
150°3.874.975.926.657.117.528.37
Run VMG3.354.305.135.856.446.937.70
Gybe Angles145.1°149.6°152.0°158.2°170.0°177.2°177.2°

APH: 580.6

CDL: 8.447

GPH: 650.8

CertNo: 668401

BOAT
ClassFIRST 31.7DesignerFINOTBuilderBENETEAUAge date04/2000Series date09/1998Offset fileFIRST317.offData fileE6684_C
HULL
Length Overall9.490 mMaximum Beam3.212 mDraft1.922 mDisplacement3,712 kgDLR5.2176IMS DivisionCruiser/RacerDynamic Allowance0.100%Age Allowance0.487%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.391m
CREW
Maximum weight350 kgMinimum weight263 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail26.4327.11Headsail Luffed35.1935.19Headsail FlyingSymmetric67.6467.64Asymmetric
STORM SAIL AREAS (m²)
Trysail7.54Storm Jib7.22Heavy Weather Jib19.49
SAIL LIMITS
Headsails1 * Woven polyester sails  Spinnakers4
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  03510002OW9Issued on 22/06/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

MAMBRU

ESP-6684_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 VMG1044.7866.2781.4748.4734.2727.9729.7
52°687.9588.0545.3527.9520.6516.5514.1
60°654.8568.2531.5514.3506.3501.5497.5
75°634.2555.7521.2501.2487.6479.4470.4
90°645.5558.9520.1497.1478.8464.0445.5
110°679.2563.8514.4485.4462.5445.0424.7
120°699.7575.4519.6487.9461.8439.1401.8
135°777.6626.2546.7507.0477.9451.6401.7
150°930.0724.5608.4541.7506.1478.9430.2
Run VMG1073.8836.6701.6615.0558.7519.5467.8
Selected Courses
Windward / Leeward1059.3851.4741.5681.7646.4623.7598.7
All purpose813.9670.1598.7561.1538.1522.1500.7
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward712.50.8421
All purpose580.61.0333
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low742.00.8086
Triple Number Coastal/Long Distance Medium577.01.0399
Triple Number Coastal/Long Distance High518.11.1581
Triple Number Windward/Leeward Low955.40.6280
Triple Number Windward/Leeward Medium707.00.8487
Triple Number Windward/Leeward High620.00.9677
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance631.40.9502
Triple Number Coastal/Long Distance Low742.00.8086
Triple Number Coastal/Long Distance Medium577.01.0399
Triple Number Coastal/Long Distance High518.11.1581
Triple Number Windward/Leeward Low955.40.6280
Triple Number Windward/Leeward Medium707.00.8487
Triple Number Windward/Leeward High620.00.9677
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1060.7802.5671.4598.1558.6527.1476.7
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7457
Downwind "popa"0.8799
70% up, 30% down "Ilhabela"0.7814
30% up, 70% down "Ilhabela-inverso"0.8348
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low742.00.8086
Triple Number Coastal/Long Distance Medium577.01.0399
Triple Number Coastal/Long Distance High518.11.1581
Triple Number Windward/Leeward Low955.40.6280
Triple Number Windward/Leeward Medium707.00.8487
Triple Number Windward/Leeward High620.00.9677
Predominantly Upwind625.30.9596
Predominantly Downwind591.71.0140
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low742.00.8086
Triple Number All Purpose Medium577.01.0399
Triple Number All Purpose High518.11.1581
Triple Number Windward/Leeward Low955.40.6280
Triple Number Windward/Leeward Medium707.00.8487
Triple Number Windward/Leeward High620.00.9677
Predominantly Upwind625.30.9596
Predominantly Downwind591.71.0140
Predominantly Upwind Low813.40.7376
Predominantly Upwind Medium643.40.9326
Predominantly Upwind High608.90.9853
Predominantly Downwind Low822.70.7293
Predominantly Downwind Medium588.71.0191
Predominantly Downwind High487.21.2316
Chicago-Mac Upwind0.9434
Chicago-Mac All Purpose0.9670
Chicago-Mac Downwind0.9958
Bayview-Mac Cove Island0.9031
Bayview-Mac Shore0.9134
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching552.41.0861
Predominantly Reaching Low673.60.8907
Predominantly Reaching Medium548.01.0949
Predominantly Reaching High483.41.2411
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1043.30.5751
5-Band Low / Medium873.20.6871
5-Band Medium695.00.8633
5-Band Medium / High628.20.9551
5-Band High603.00.9950
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance631.40.9502
Triple Number Coastal/Long Distance Low742.00.8086
Triple Number Coastal/Long Distance Medium577.01.0399
Triple Number Coastal/Long Distance High518.11.1581
Triple Number Windward/Leeward Low955.40.6280
Triple Number Windward/Leeward Medium707.00.8487
Triple Number Windward/Leeward High620.00.9677
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1060.7802.5671.4598.1558.6527.1476.7
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance631.40.9502
Triple Number Coastal/Long Distance Low742.00.8086
Triple Number Coastal/Long Distance Medium577.01.0399
Triple Number Coastal/Long Distance High518.11.1581
Triple Number Windward/Leeward Low955.40.6280
Triple Number Windward/Leeward Medium707.00.8487
Triple Number Windward/Leeward High620.00.9677
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1060.7802.5671.4598.1558.6527.1476.7
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance631.4
Triple Number Coastal/Long Distance Low742.0
Triple Number Coastal/Long Distance Medium577.0
Triple Number Coastal/Long Distance High518.1
Triple Number Windward/Leeward Low955.4
Triple Number Windward/Leeward Medium707.0
Triple Number Windward/Leeward High620.0
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1060.7802.5671.4598.1558.6527.1476.7
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance631.40.9502
Triple Number Coastal/Long Distance Low742.00.8086
Triple Number Coastal/Long Distance Medium577.01.0399
Triple Number Coastal/Long Distance High518.11.1581
Triple Number Windward/Leeward Low955.40.6280
Triple Number Windward/Leeward Medium707.00.8487
Triple Number Windward/Leeward High620.00.9677
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1060.7802.5671.4598.1558.6527.1476.7
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)631.40.9502
Triple Number Coastal/Long Distance Low742.00.8086
Triple Number Coastal/Long Distance Medium577.01.0399
Triple Number Coastal/Long Distance High518.11.1581
Triple Number Windward/Leeward Low955.40.6280
Triple Number Windward/Leeward Medium707.00.8487
Triple Number Windward/Leeward High620.00.9677
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1060.7802.5671.4598.1558.6527.1476.7
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low742.00.8086
Triple Number Coastal/Long Distance Medium577.01.0399
Triple Number Coastal/Long Distance High518.11.1581
Triple Number Windward/Leeward Low955.40.6280
Triple Number Windward/Leeward Medium707.00.8487
Triple Number Windward/Leeward High620.00.9677
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8086
Triple Number Coastal/Long Distance Medium1.0399
Triple Number Coastal/Long Distance High1.1581
Triple Number Windward/Leeward Low0.6280
Triple Number Windward/Leeward Medium0.8487
Triple Number Windward/Leeward High0.9677
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1060.7802.5671.4598.1558.6527.1476.7
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance631.40.9502
Triple Number Coastal/Long Distance Low742.00.8086
Triple Number Coastal/Long Distance Medium577.01.0399
Triple Number Coastal/Long Distance High518.11.1581
Triple Number Windward/Leeward Low955.40.6280
Triple Number Windward/Leeward Medium707.00.8487
Triple Number Windward/Leeward High620.00.9677
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1060.7802.5671.4598.1558.6527.1476.7
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low742.00.8086
Triple Number Coastal/Long Distance Medium577.01.0399
Triple Number Coastal/Long Distance High518.11.1581
Triple Number Windward/Leeward Low955.40.6280
Triple Number Windward/Leeward Medium707.00.8487
Triple Number Windward/Leeward High620.00.9677
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance631.40.9502
Triple Number Coastal/Long Distance Low742.00.8086
Triple Number Coastal/Long Distance Medium577.01.0399
Triple Number Coastal/Long Distance High518.11.1581
Triple Number Windward/Leeward Low955.40.6280
Triple Number Windward/Leeward Medium707.00.8487
Triple Number Windward/Leeward High620.00.9677
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1060.7802.5671.4598.1558.6527.1476.7
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low955.40.6280
Triple Number Windward/Leeward Medium707.00.8487
Triple Number Windward/Leeward High620.00.9677
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1060.7802.5671.4598.1558.6527.1476.7
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low742.0
Triple Number Coastal/Long Distance Medium577.0
Triple Number Coastal/Long Distance High518.1
Triple Number Windward/Leeward Low955.4
Triple Number Windward/Leeward Medium707.0
Triple Number Windward/Leeward High620.0
Predominantly Upwind625.3
Predominantly Downwind591.7
Predominantly Reaching566.4
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance631.40.9502
Triple Number Coastal/Long Distance Low742.00.8086
Triple Number Coastal/Long Distance Medium577.01.0399
Triple Number Coastal/Long Distance High518.11.1581
Triple Number Windward/Leeward Low955.40.6280
Triple Number Windward/Leeward Medium707.00.8487
Triple Number Windward/Leeward High620.00.9677
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1060.7802.5671.4598.1558.6527.1476.7
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8086
Triple Number Coastal/Long Distance Medium1.0399
Triple Number Coastal/Long Distance High1.1581
Triple Number Windward/Leeward Low0.6280
Triple Number Windward/Leeward Medium0.8487
Triple Number Windward/Leeward High0.9677
Coastal/Long Distance0.9502
Predominantly Upwind0.9596
Predominantly Downwind1.0140
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.8086
Tretall Distanseseilas Mellomvind1.0399
Tretall Distanseseilas Mye vind1.1581
Tretall Pølsebane Lite vind0.6280
Tretall Pølsebane Mellomvind0.8487
Tretall Pølsebane Mye vind0.9677
Distanseseilas ett tall (OSN 8-16kn)0.9502
Distanseseilas ett tall (APH 6-20kn)1.0333
Enkeltall Motvind0.9596
Enkeltall Medvind1.0140
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low742.00.8086
Triple Number Coastal/Long Distance Medium577.01.0399
Triple Number Coastal/Long Distance High518.11.1581
Triple Number Windward/Leeward Low955.40.6280
Triple Number Windward/Leeward Medium707.00.8487
Triple Number Windward/Leeward High620.00.9677
Coastal/Long Distance631.40.9502
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind625.30.9596
Predominantly Downwind591.71.0140
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore606.20.9897
Cape Doctor Coastal507.11.1831
Triple Number Coastal/Long Distance Low742.00.8086
Triple Number Coastal/Long Distance Medium577.01.0399
Triple Number Coastal/Long Distance High518.11.1581
Triple Number Windward/Leeward Low955.40.6280
Triple Number Windward/Leeward Medium707.00.8487
Triple Number Windward/Leeward High620.00.9677
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8086
Triple Number Coastal/Long Distance Medium1.0399
Triple Number Coastal/Long Distance High1.1581
Triple Number Windward/Leeward Low0.6280
Triple Number Windward/Leeward Medium0.8487
Triple Number Windward/Leeward High0.9677
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8086
Triple Number Coastal/Long Distance Medium1.0399
Triple Number Coastal/Long Distance High1.1581
Triple Number Windward/Leeward Low0.6280
Triple Number Windward/Leeward Medium0.8487
Triple Number Windward/Leeward High0.9677
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance631.40.9502
Triple Number Coastal/Long Distance Low742.00.8086
Triple Number Coastal/Long Distance Medium577.01.0399
Triple Number Coastal/Long Distance High518.11.1581
Triple Number Windward/Leeward Low955.40.6280
Triple Number Windward/Leeward Medium707.00.8487
Triple Number Windward/Leeward High620.00.9677
Predominantly Upwind625.30.9596
Predominantly Downwind591.71.0140
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1060.7802.5671.4598.1558.6527.1476.7
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance631.40.9502
Triple Number Coastal/Long Distance Low742.00.8086
Triple Number Coastal/Long Distance Medium577.01.0399
Triple Number Coastal/Long Distance High518.11.1581
Triple Number Windward/Leeward Low955.40.6280
Triple Number Windward/Leeward Medium707.00.8487
Triple Number Windward/Leeward High620.00.9677
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1060.7802.5671.4598.1558.6527.1476.7
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low742.00.8086
Triple Number All Purpose Medium577.01.0399
Triple Number All Purpose High518.11.1581
Triple Number Windward/Leeward Low955.40.6280
Triple Number Windward/Leeward Medium707.00.8487
Triple Number Windward/Leeward High620.00.9677
Predominantly Upwind625.30.9596
Predominantly Downwind591.71.0140
Predominantly Upwind Low813.40.7376
Predominantly Upwind Medium643.40.9326
Predominantly Upwind High608.90.9853
Predominantly Downwind Low822.70.7293
Predominantly Downwind Medium588.71.0191
Predominantly Downwind High487.21.2316
Chicago-Mac Upwind0.9434
Chicago-Mac All Purpose0.9670
Chicago-Mac Downwind0.9958
Bayview-Mac Cove Island0.9031
Bayview-Mac Shore0.9134
Harvest Moon Regatta503.71.1913
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy608.20.9864
San Francisco Bay Medium699.70.8575
Predominantly Reaching552.41.0861
Predominantly Reaching Low673.60.8907
Predominantly Reaching Medium548.01.0949
Predominantly Reaching High483.41.2411
Windward/Leeward 60-40 Low955.40.6280
Windward/Leeward 60-40 Medium727.00.8254
Windward/Leeward 60-40 High657.50.9126
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1043.30.5751
5-Band Low / Medium873.20.6871
5-Band Medium695.00.8633
5-Band Medium / High628.20.9551
5-Band High603.00.9950
ORC Ref  03510002OW9Issued on 22/06/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

MAMBRU

ESP-6684_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. Beam3.212Draft1.922Displacement3,712Wetted area20.43IMS L8.930LSM08.926Acc. length9.610Sink (kg/mm) 15.76
VCGD-0.006VCGM-0.044RM Rated (kg·m) 88.4Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.391PBWPIPA0.0032
EDL2.455ST10.041ST2
ST30.179ST40.110ST50.263
RIG
Forestay tensionAftInner stayNone FittedCarbon mastNoHeadsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders2Rotating mastNo
P10.900IG12.000ISP12.000MDT10.105MDL10.158MDT20.105MDL20.158TLMW0.158GO0.162
E3.950J3.700BAS1.695FSD0.050SFJSPL3.780WPLTPSBD0.110MWTMCG
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered90.0Flotation Date01/01/2010MeasurerComment
SFFP0.303FFMFF1.195LCFcl5.347SG
SAFP8.732FAMFA0.957LCFsh5.580HBI1.067
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03510002OW9Issued on 22/06/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

MAMBRU

ESP-6684_C

RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment026.43
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentORC5.500.00NoNo 35.19* Copied from legacy *
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentORC0.0067.64* Auto Added *
ORC Ref  03510002OW9Issued on 22/06/2023Valid until 31/12/2023
VPP ver: 2023 1.02 | © ORC | www.orc.org