Club Certificate2026
IRREVERSIBLEESP-11061_C
RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
Rated boat velocities in knots
Wind Velocity 4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat Angles48.8°46.1°44.3°43.4°43.1°42.7°42.6°42.4°43.1°
Beat VMG1.812.633.203.613.924.154.294.404.39
52°2.914.134.925.495.906.156.336.476.53
60°3.214.415.195.766.126.366.526.706.77
75°3.414.605.405.976.336.566.736.987.14
90°3.334.555.386.056.476.726.907.147.43
110°3.234.565.526.206.616.897.147.627.89
120°3.104.415.406.136.576.877.147.688.11
135°2.723.974.995.836.386.737.007.588.08
150°2.313.464.445.295.986.456.767.297.84
Run VMG2.003.003.864.605.295.846.276.867.36
Gybe Angles146.0°148.9°152.5°155.0°160.0°165.5°171.8°178.6°178.1°
APH ToD:674.8CDL: 6.778APH ToT: 0.8891CertNo:110611
BOAT
ClassWESTERLY LB 31DesignerJack Laurent GilesBuilderWESTERLYAge date10/1971Series date01/1971Offset fileGR0040.BOFData fileE11061_C
HULL
Length Overall9.390 mMaximum Beam2.908 mDraft1.561 mDisplacement6,960 kgDLR11.9676IMS DivisionCruiser/RacerDynamic Allowance0.730%Age Allowance0.650%RS Assessment-0.025%
PROPELLER
InstallationShaft non exposedTypeSolid 3 bladesDiameter0.400m
CREW
Maximum weight160 kg(declared)Minimum weight130 kg ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail18.1218.48Mizzen0.006.45Headsail Luffed35.7535.75Headsail FlyingSymmetric68.9068.90Asymmetric
STORM SAIL AREAS Maximum (m²)
Trysail5.17Storm Jib6.71Heavy Weather Jib18.11
SAIL LIMITS
Headsails5
✱ One set on the forestay
Spinnakers4
STABILITY
Righting Moment 144.2 kg·m Stability Index 143.9
COMMENTS
MEDIDAS ESTIMADAS CASCO ESTIMADO.
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  03510004KED Issued on 07/04/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
IRREVERSIBLEESP-11061_C
RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
Time Allowances in secs/NM
Wind Velocity 4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat VMG1983.91368.81123.3997.2917.7867.3840.0818.9820.8
52°1235.1872.6732.3656.2610.5584.9569.2556.6551.4
60°1122.0817.0694.3625.5588.3566.0552.0537.5531.6
75°1055.0782.9667.2602.6569.0548.8535.1515.8503.9
90°1080.6792.0669.7594.9556.7535.7521.7504.0484.7
110°1115.9789.9652.4580.7544.8522.7504.4472.7456.5
120°1161.5816.6667.0587.8547.9524.1504.3468.6443.9
135°1323.7905.7721.4617.7564.7535.3514.0475.2445.5
150°1556.11040.4810.8681.1601.9558.5532.6493.6459.4
Run VMG1796.81201.4933.8782.3681.0616.6574.1524.6489.4
Selected Courses
Windward / Leeward1890.41285.11028.6889.7799.3742.0707.1671.8655.1
All purpose1421.7988.4805.9706.2647.3611.8589.4562.4546.5
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward837.50.7164
All purpose674.80.8891
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low897.10.6688
Triple Number Coastal/Long Distance Medium671.20.8939
Triple Number Coastal/Long Distance High584.91.0259
Triple Number Windward/Leeward Low1156.70.5187
Triple Number Windward/Leeward Medium834.30.7192
Triple Number Windward/Leeward High702.60.8540
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance736.90.8143
Triple Number Coastal/Long Distance Low897.10.6688
Triple Number Coastal/Long Distance Medium671.20.8939
Triple Number Coastal/Long Distance High584.91.0259
Triple Number Windward/Leeward Low1156.70.5187
Triple Number Windward/Leeward Medium834.30.7192
Triple Number Windward/Leeward High702.60.8540
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1881.01276.7964.9798.2693.8635.4594.8536.0517.8
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.6058
Downwind "popa"0.7904
70% up, 30% down "Ilhabela"0.6514
30% up, 70% down "Ilhabela-inverso"0.7242
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low897.10.6688
Triple Number Coastal/Long Distance Medium671.20.8939
Triple Number Coastal/Long Distance High584.91.0259
Triple Number Windward/Leeward Low1156.70.5187
Triple Number Windward/Leeward Medium834.30.7192
Triple Number Windward/Leeward High702.60.8540
Predominantly Upwind741.30.8094
Predominantly Downwind676.90.8864
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP700.90.8561 Predom. Rc High533.31.1250 5B SF Bay L/M941.80.6371 TriNum AP Low897.20.6688 Predom. Dn Low1082.50.5543 5B SF Bay Med791.30.7583 TriNum AP Med671.30.8937 Predom. Dn L/M778.00.7712 5B SF Bay M/H700.70.8562 TriNum AP High584.91.0259 Predom. Dn Med647.90.9261 5B SF Bay High664.70.9026 TriNum W/L Low1216.30.4933 Predom. Dn M/H570.91.0510 5B AP Low996.90.6019 TriNum W/L Med834.30.7192 Predom. Dn High533.51.1246 5B AP L/M774.20.7750 TriNum W/L Hig702.60.8540 ChiMac Up Low968.90.6192 5B AP Med659.50.9097 Predom. Upwind774.70.7744 ChiMac Up Med861.20.6967 5B AP M/H593.51.0110 Predom. Reaching671.60.8934 ChiMac Up High735.60.8157 5B AP High564.31.0633 Predom. Downwind710.90.8440 ChiMac Off Low917.30.6541 5B W/L Low1372.30.4372 Predom. Up Low1116.90.5372 ChiMac Off Med799.70.7502 5B W/L L/M983.60.6100 Predom. Up L/M830.90.7221 ChiMac Off High662.60.9055 5B W/L Med816.20.7351 Predom. Up Med714.00.8404 ChiMac AP Low938.20.6395 5B W/L M/H714.80.8394 Predom. Up M/H648.00.9260 ChiMac AP Med826.90.7256 5B W/L High675.00.8889 Predom. Up High623.20.9628 ChiMac AP High696.90.8610 W/L 60-40 Low1390.10.4316 Predom. Rc Low973.30.6164 BayMac Cove Island1086.80.5521 W/L 60-40 L/M1003.80.5977 Predom. Rc L/M722.70.8302 BayMac Shore1078.60.5563 W/L 60-40 Med839.60.7146 Predom. Rc Med619.00.9692 Harvest Moon581.81.0312 W/L 60-40 M/H741.30.8094 Predom. Rc M/H560.91.0696 5B SF Bay Low1156.10.5190 W/L 60-40 High704.60.8516      SA/DSPL Up14.69SA/DSPL Dn23.72
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance736.90.8143
Triple Number Coastal/Long Distance Low897.10.6688
Triple Number Coastal/Long Distance Medium671.20.8939
Triple Number Coastal/Long Distance High584.91.0259
Triple Number Windward/Leeward Low1156.70.5187
Triple Number Windward/Leeward Medium834.30.7192
Triple Number Windward/Leeward High702.60.8540
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1881.01276.7964.9798.2693.8635.4594.8536.0517.8
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance736.90.8143
Triple Number Coastal/Long Distance Low897.10.6688
Triple Number Coastal/Long Distance Medium671.20.8939
Triple Number Coastal/Long Distance High584.91.0259
Triple Number Windward/Leeward Low1156.70.5187
Triple Number Windward/Leeward Medium834.30.7192
Triple Number Windward/Leeward High702.60.8540
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1881.01276.7964.9798.2693.8635.4594.8536.0517.8
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance736.9
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1881.01276.7964.9798.2693.8635.4594.8536.0517.8
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low897.10.6688
Triple Number Coastal/Long Distance Medium671.20.8939
Triple Number Coastal/Long Distance High584.91.0259
Triple Number Windward/Leeward Low1156.70.5187
Triple Number Windward/Leeward Medium834.30.7192
Triple Number Windward/Leeward High702.60.8540
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating736.90.8143
FinRating, kevyt tuuli1351.10.7401
FinRating, kova tuuli567.60.8810
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low897.10.6688
Triple Number Coastal/Long Distance Medium671.20.8939
Triple Number Coastal/Long Distance High584.91.0259
Triple Number Windward/Leeward Low1156.70.5187
Triple Number Windward/Leeward Medium834.30.7192
Triple Number Windward/Leeward High702.60.8540
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance0.8143
Triple Number Coastal/Long Distance Low0.6688
Triple Number Coastal/Long Distance Medium0.8939
Triple Number Coastal/Long Distance High1.0259
Triple Number Windward/Leeward Low0.5187
Triple Number Windward/Leeward Medium0.7192
Triple Number Windward/Leeward High0.8540
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1881.01276.7964.9798.2693.8635.4594.8536.0517.8
For information
General Purpose Handicap (GPH)763.6
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance736.90.8143
Triple Number Coastal/Long Distance Low897.10.6688
Triple Number Coastal/Long Distance Medium671.20.8939
Triple Number Coastal/Long Distance High584.91.0259
Triple Number Windward/Leeward Low1156.70.5187
Triple Number Windward/Leeward Medium834.30.7192
Triple Number Windward/Leeward High702.60.8540
Saronikos S All Purpose790.10.7594
Saronikos S Upwind908.00.6608
Saronikos S Downwind645.90.9290
Saronikos N All Purpose824.10.7280
Saronikos N Upwind943.70.6358
Saronikos N Downwind711.30.8436
Saronikos SW All Purpose802.00.7481
Saronikos SW Upwind937.30.6401
Saronikos SW Downwind662.70.9054
Saronikos NE All Purpose857.00.7001
Saronikos NE Upwind878.00.6834
Saronikos NE Downwind812.80.7382
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1881.01276.7964.9798.2693.8635.4594.8536.0517.8
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low897.10.6688
Triple Number Coastal/Long Distance Medium671.20.8939
Triple Number Coastal/Long Distance High584.91.0259
Triple Number Windward/Leeward Low1156.70.5187
Triple Number Windward/Leeward Medium834.30.7192
Triple Number Windward/Leeward High702.60.8540
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose700.90.8561
5-Band All Purpose Low1094.10.5484
5-Band All Purpose L/M801.80.7484
5-Band All Purpose Med679.30.8833
5-Band All Purpose M/H608.40.9862
5-Band All Purpose High577.71.0387
Single Number Predominant Upwind740.20.8106
Single Number Predominant Reaching643.00.9331
Single Number Predominant Downwind677.10.8862
5-Band 50-50 Windward/Leeward Low1372.30.4372
5-Band 50-50 Windward/Leeward L/M983.60.6100
5-Band 50-50 Windward/Leeward Med816.20.7351
5-Band 50-50 Windward/Leeward M/H714.80.8394
5-Band 50-50 Windward/Leeward High675.00.8889
5-Band 60-40 Windward/Leeward Low1390.10.4316
5-Band 60-40 Windward/Leeward L/M1003.80.5977
5-Band 60-40 Windward/Leeward Med839.60.7146
5-Band 60-40 Windward/Leeward M/H741.30.8094
5-Band 60-40 Windward/Leeward High704.60.8516
Triple Number 50-50 Windward/Leeward Low1216.30.4933
Triple Number 50-50 Windward/Leeward Med834.40.7191
Triple Number 50-50 Windward/Leeward High702.60.8540
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward860.80.6970
Triple Number 60-40 Windward/Leeward Low1234.50.4860
Triple Number 60-40 Windward/Leeward Med857.30.6999
Triple Number 60-40 Windward/Leeward High729.80.8221
Triple Number All-Purpose Low976.60.6144
Triple Number All-Purpose Med692.00.8670
Triple Number All-Purpose High599.41.0011
Triple Number Predominant Upwind Low1008.90.5947
Triple Number Predominant Upwind Med730.30.8216
Triple Number Predominant Upwind High646.80.9277
Triple Number Predominant Reaching Low878.70.6828
Triple Number Predominant Reaching Med641.60.9352
Triple Number Predominant Reaching High542.51.1060
Triple Number Predominant Downwind Low960.90.6244
Triple Number Predominant Downwind Med660.10.9089
Triple Number Predominant Downwind High548.21.0944
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance736.90.8143
Triple Number Coastal/Long Distance Low897.10.6688
Triple Number Coastal/Long Distance Medium671.20.8939
Triple Number Coastal/Long Distance High584.91.0259
Triple Number Windward/Leeward Low1156.70.5187
Triple Number Windward/Leeward Medium834.30.7192
Triple Number Windward/Leeward High702.60.8540
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1881.01276.7964.9798.2693.8635.4594.8536.0517.8
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance736.90.8143
Triple Number Coastal/Long Distance Low897.10.6688
Triple Number Coastal/Long Distance Medium671.20.8939
Triple Number Coastal/Long Distance High584.91.0259
Triple Number Windward/Leeward Low1156.70.5187
Triple Number Windward/Leeward Medium834.30.7192
Triple Number Windward/Leeward High702.60.8540
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1881.01276.7964.9798.2693.8635.4594.8536.0517.8
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low897.1
Triple Number Coastal/Long Distance Medium671.2
Triple Number Coastal/Long Distance High584.9
Triple Number Windward/Leeward Low1156.7
Triple Number Windward/Leeward Medium834.3
Triple Number Windward/Leeward High702.6
Predominantly Upwind741.3
Predominantly Downwind676.9
Predominantly Reaching651.8
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance736.90.8143
Triple Number Coastal/Long Distance Low897.10.6688
Triple Number Coastal/Long Distance Medium671.20.8939
Triple Number Coastal/Long Distance High584.91.0259
Triple Number Windward/Leeward Low1156.70.5187
Triple Number Windward/Leeward Medium834.30.7192
Triple Number Windward/Leeward High702.60.8540
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1881.01276.7964.9798.2693.8635.4594.8536.0517.8
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.6688
Triple Number Coastal/Long Distance Medium0.8939
Triple Number Coastal/Long Distance High1.0259
Triple Number Windward/Leeward Low0.5187
Triple Number Windward/Leeward Medium0.7192
Triple Number Windward/Leeward High0.8540
Coastal/Long Distance0.8143
Predominantly Upwind0.8094
Predominantly Downwind0.8864
For information
General Purpose Handicap (GPH)763.6
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)0.8891
Distanseseilas Trippeltall svak vind0.6688
Distanseseilas Trippeltall mellomvind0.8939
Distanseseilas Trippeltall sterk vind1.0259
Pølsebane Trippeltall svak vind0.5187
Pølsebane Trippeltall mellomvind0.7192
Pølsebane Trippeltall sterk vind0.8540
Motvind Singeltall0.8094
Medvind Singeltall0.8864
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low897.10.6688
Triple Number Coastal/Long Distance Medium671.20.8939
Triple Number Coastal/Long Distance High584.91.0259
Triple Number Windward/Leeward Low1156.70.5187
Triple Number Windward/Leeward Medium834.30.7192
Triple Number Windward/Leeward High702.60.8540
Coastal/Long Distance736.90.8143
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind741.30.8094
Predominantly Downwind676.90.8864
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore660.10.9090
Cape Doctor Coastal551.21.0884
Triple Number Coastal/Long Distance Low897.10.6688
Triple Number Coastal/Long Distance Medium671.20.8939
Triple Number Coastal/Long Distance High584.91.0259
Triple Number Windward/Leeward Low1156.70.5187
Triple Number Windward/Leeward Medium834.30.7192
Triple Number Windward/Leeward High702.60.8540
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.6688
Triple Number Coastal/Long Distance Medium0.8939
Triple Number Coastal/Long Distance High1.0259
Triple Number Windward/Leeward Low0.5187
Triple Number Windward/Leeward Medium0.7192
Triple Number Windward/Leeward High0.8540
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.6688
Triple Number Coastal/Long Distance Medium0.8939
Triple Number Coastal/Long Distance High1.0259
Triple Number Windward/Leeward Low0.5187
Triple Number Windward/Leeward Medium0.7192
Triple Number Windward/Leeward High0.8540
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance736.90.8143
Triple Number Coastal/Long Distance Low897.10.6688
Triple Number Coastal/Long Distance Medium671.20.8939
Triple Number Coastal/Long Distance High584.91.0259
Triple Number Windward/Leeward Low1156.70.5187
Triple Number Windward/Leeward Medium834.30.7192
Triple Number Windward/Leeward High702.60.8540
Predominantly Upwind741.30.8094
Predominantly Downwind676.90.8864
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1881.01276.7964.9798.2693.8635.4594.8536.0517.8
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance736.90.8143
Triple Number Coastal/Long Distance Low897.10.6688
Triple Number Coastal/Long Distance Medium671.20.8939
Triple Number Coastal/Long Distance High584.91.0259
Triple Number Windward/Leeward Low1156.70.5187
Triple Number Windward/Leeward Medium834.30.7192
Triple Number Windward/Leeward High702.60.8540
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1881.01276.7964.9798.2693.8635.4594.8536.0517.8
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP700.90.8561 Predom. Dn High533.51.1246 5B AP M/H593.51.0110 TriNum AP Low897.20.6688 Predom. Rc Low973.30.6164 5B AP High564.31.0633 TriNum AP Med671.30.8937 Predom. Rc L/M722.70.8302 5B SF Bay Low1156.10.5190 TriNum AP High584.91.0259 Predom. Rc Med619.00.9692 5B SF Bay L/M941.80.6371 TriNum W/L Low1216.30.4933 Predom. Rc M/H560.91.0696 5B SF Bay Med791.30.7583 TriNum W/L Med834.30.7192 Predom. Rc High533.31.1250 5B SF Bay M/H700.70.8562 TriNum W/L Hig702.60.8540 5B W/L Low1372.30.4372 5B SF Bay High664.70.9026 Predom. Upwind774.70.7744 5B W/L L/M983.60.6100 ChiMac Up Low968.90.6192 Predom. Reaching671.60.8934 5B W/L Med816.20.7351 ChiMac Up Med861.20.6967 Predom. Downwind710.90.8440 5B W/L M/H714.80.8394 ChiMac Up High735.60.8157 Predom. Up Low1116.90.5372 5B W/L High675.00.8889 ChiMac Off Low917.30.6541 Predom. Up L/M830.90.7221 W/L 60-40 Low1390.10.4316 ChiMac Off Med799.70.7502 Predom. Up Med714.00.8404 W/L 60-40 L/M1003.80.5977 ChiMac Off High662.60.9055 Predom. Up M/H648.00.9260 W/L 60-40 Med839.60.7146 ChiMac AP Low938.20.6395 Predom. Up High623.20.9628 W/L 60-40 M/H741.30.8094 ChiMac AP Med826.90.7256 Predom. Dn Low1082.50.5543 W/L 60-40 High704.60.8516 ChiMac AP High696.90.8610 Predom. Dn L/M778.00.7712 5B AP Low996.90.6019 BayMac Cove Island1086.80.5521 Predom. Dn Med647.90.9261 5B AP L/M774.20.7750 BayMac Shore1078.60.5563 Predom. Dn M/H570.91.0510 5B AP Med659.50.9097 Harvest Moon581.81.0312      SA/DSPL Up14.69SA/DSPL Dn23.72
ORC Ref  03510004KED Issued on 07/04/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
IRREVERSIBLEESP-11061_C
RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassWESTERLY LB 31MeasurementHINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall9.390Maximum beam2.908Draft1.561Displacement6,960Wetted area24.48IMS L8.262LSM08.346Accomod. length9.363Sink (kg/mm) 16.93
VCGD-0.242VCGM-0.371 RM Rated (kg·m) 144.2Limit of positive stability(°) 137.6 Stability Index 143.9 BLR index 0.0000Default crew weight532 Declared crew weight 160
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeSolid 3 blades
InstallationShaft non exposedTwin screwNoHydro generatorNo
PRD0.400PBWPIPA0.0098
PSD0.025PHD0.058PHL0.036
PSA19.7°ESL0.191
RIG
BackstayFixedForestayFixedInner forestayFixedMast materialAluminumSingle headsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysNoCheckstaysNoSpreaders1Rotating mastNo
P9.680IG11.580ISP11.600MDT10.100MDL10.110MDT2MDL2TLMWGO
E3.050J3.400BAS1.707FSD0.050SFJ0.100SPL4.000WPLTPSBDMWTMCG
PY5.590MDT1Y0.071MDL1Y0.101MDT2Y0.071MDL2Y0.101TLY0.000BASY1.835EY1.840BDY0.065IYEB3.424
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered145.0Flotation Date01/01/2010
SFFP0.578FFM1.111FF1.121LCFcl5.217SG1.0250
SAFP9.153FAM0.731FA0.736LCFsh5.437HBI0.828
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03510004KED Issued on 07/04/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
IRREVERSIBLEESP-11061_C
RFEV
c/ Gamazo sn
39004 Santander – España
crucero@rfev.es
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentORC18.12* Copied from legacy *
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentORC5.82NoNo 35.75* Copied from legacy *
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentORC0.0068.90* Auto Added *
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
CRUISER/RACER REQUIREMENTS*
Accommodation length9.4 mTable area0.44 m²Headroom1.66 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity68 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity38 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.
ORC Ref  03510004KED Issued on 07/04/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org