Club Certificate2026
BelmontFIN-4900
Avomeripurjehtijat ry
c/o Helsingfors Segelklubb ry
Vattuniemen puistotie 1
00210 HELSINKI
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 Angles46.4°43.7°41.2°39.9°39.2°38.5°37.8°37.5°37.7°
Beat VMG2.693.814.645.225.605.805.926.056.06
52°4.245.836.897.607.998.218.328.428.47
60°4.596.157.187.848.208.418.538.648.70
75°4.876.367.388.008.378.608.768.969.07
90°4.726.257.297.978.398.678.889.219.47
110°4.265.997.258.088.548.859.059.379.51
120°4.135.837.087.978.518.879.189.7010.05
135°3.615.246.517.538.238.689.049.7610.47
150°3.014.445.676.737.618.248.669.3610.12
Run VMG2.603.844.915.836.647.327.898.709.34
Gybe Angles141.1°144.7°148.7°151.6°154.8°161.0°166.2°177.2°177.2°
APH ToD:504.6CDL: 11.884APH ToT: 1.1890CertNo:
BOAT
ClassSWAN 51 (1981)DesignerGerman FrersBuilderNAUTORAge date01/1985Series date05/1981Offset fileSWN51.offData fileFIN4900
HULL
Length Overall15.633 mMaximum Beam4.450 mDraft2.715 mDisplacement19,005 kgDLR9.2428IMS DivisionCruiser/RacerDynamic Allowance0.450%Age Allowance0.650%RS Assessment-0.610%
PROPELLER
InstallationShaft exposedTypeFolding 3 bladesDiameter0.590m
CREW
Maximum weight1,000 kg(declared)Minimum weight850 kg ✱ when appliedCrew Arm Extension0.00 m
SAIL AREAS (m²)
MeasuredRatedMainsail63.5764.50Headsail Luffed89.0989.09Headsail FlyingSymmetric198.66198.66Asymmetric
STORM SAIL AREAS Maximum (m²)
Trysail18.39Storm Jib22.73Heavy Weather Jib61.37
SAIL LIMITS
Headsails7
✱ One set on the forestay
Spinnakers5
STABILITY
Righting Moment 434.8 kg·m Stability Index 125.8
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  04140004W46 Issued on 05/08/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
BelmontFIN-4900
Avomeripurjehtijat ry
c/o Helsingfors Segelklubb ry
Vattuniemen puistotie 1
00210 HELSINKI
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 VMG1339.7943.9776.4689.3643.2620.9607.9595.2593.6
52°849.0617.3522.7473.4450.3438.5432.6427.5425.2
60°783.8585.8501.5459.3438.9428.0421.9416.9414.0
75°739.9565.7488.0449.9430.2418.8410.8401.6397.0
90°762.0576.2494.0451.7429.0415.3405.4390.7380.0
110°846.0601.5496.6445.8421.5407.0397.6384.4378.6
120°872.6617.0508.3451.7423.0405.8392.1371.2358.1
135°998.2686.7552.8477.9437.6414.8398.3368.8343.7
150°1197.9811.2634.4535.3473.2437.1415.6384.7355.8
Run VMG1383.2936.7732.6617.4542.1491.5456.2413.6385.5
Selected Courses
Windward / Leeward1361.4940.3754.5653.4592.6556.2532.0504.4489.5
All purpose1023.4723.5593.0523.7485.1462.8448.3430.2418.7
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward620.60.9668
All purpose504.61.1890
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low658.30.9115
Triple Number Coastal/Long Distance Medium501.41.1967
Triple Number Coastal/Long Distance High445.11.3479
Triple Number Windward/Leeward Low847.30.7081
Triple Number Windward/Leeward Medium617.30.9720
Triple Number Windward/Leeward High527.71.1370
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance549.61.0916
Triple Number Coastal/Long Distance Low658.30.9115
Triple Number Coastal/Long Distance Medium501.41.1967
Triple Number Coastal/Long Distance High445.11.3479
Triple Number Windward/Leeward Low847.30.7081
Triple Number Windward/Leeward Medium617.30.9720
Triple Number Windward/Leeward High527.71.1370
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1363.6939.9710.5589.6517.5480.1453.2414.5402.5
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.8612
Downwind "popa"1.0024
70% up, 30% down "Ilhabela"0.8992
30% up, 70% down "Ilhabela-inverso"0.9554
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low658.30.9115
Triple Number Coastal/Long Distance Medium501.41.1967
Triple Number Coastal/Long Distance High445.11.3479
Triple Number Windward/Leeward Low847.30.7081
Triple Number Windward/Leeward Medium617.30.9720
Triple Number Windward/Leeward High527.71.1370
Predominantly Upwind542.51.1060
Predominantly Downwind517.31.1598
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP525.11.1426 Predom. Rc High410.31.4623 5B SF Bay L/M687.30.8730 TriNum AP Low658.30.9115 Predom. Dn Low809.80.7410 5B SF Bay Med583.41.0285 TriNum AP Med501.41.1966 Predom. Dn L/M590.21.0166 5B SF Bay M/H523.81.1455 TriNum AP High445.11.3479 Predom. Dn Med497.21.2067 5B SF Bay High497.71.2055 TriNum W/L Low888.70.6752 Predom. Dn M/H441.31.3595 5B AP Low734.10.8173 TriNum W/L Med617.30.9720 Predom. Dn High412.41.4551 5B AP L/M571.91.0492 TriNum W/L Hig527.71.1370 ChiMac Up Low692.30.8666 5B AP Med493.71.2153 Predom. Upwind565.11.0617 ChiMac Up Med621.10.9661 5B AP M/H450.81.3310 Predom. Reaching504.81.1885 ChiMac Up High539.01.1131 5B AP High431.41.3910 Predom. Downwind542.11.1067 ChiMac Off Low691.40.8679 5B W/L Low999.10.6005 Predom. Up Low792.40.7572 ChiMac Off Med606.60.9891 5B W/L L/M722.30.8307 Predom. Up L/M599.11.0015 ChiMac Off High507.41.1824 5B W/L Med605.10.9916 Predom. Up Med523.61.1459 ChiMac AP Low688.20.8719 5B W/L M/H536.61.1182 Predom. Up M/H485.01.2371 ChiMac AP Med611.30.9815 5B W/L High506.61.1844 Predom. Up High469.21.2787 ChiMac AP High521.81.1499 W/L 60-40 Low999.50.6003 Predom. Rc Low710.60.8443 BayMac Cove Island793.30.7563 W/L 60-40 L/M728.00.8242 Predom. Rc L/M538.31.1147 BayMac Shore786.20.7632 W/L 60-40 Med615.20.9754 Predom. Rc Med469.01.2793 Harvest Moon446.21.3448 W/L 60-40 M/H551.41.0881 Predom. Rc M/H430.31.3942 5B SF Bay Low839.10.7151 W/L 60-40 High524.71.1435      SA/DSPL Up21.23SA/DSPL Dn36.46
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance549.61.0916
Triple Number Coastal/Long Distance Low658.30.9115
Triple Number Coastal/Long Distance Medium501.41.1967
Triple Number Coastal/Long Distance High445.11.3479
Triple Number Windward/Leeward Low847.30.7081
Triple Number Windward/Leeward Medium617.30.9720
Triple Number Windward/Leeward High527.71.1370
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1363.6939.9710.5589.6517.5480.1453.2414.5402.5
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance549.61.0916
Triple Number Coastal/Long Distance Low658.30.9115
Triple Number Coastal/Long Distance Medium501.41.1967
Triple Number Coastal/Long Distance High445.11.3479
Triple Number Windward/Leeward Low847.30.7081
Triple Number Windward/Leeward Medium617.30.9720
Triple Number Windward/Leeward High527.71.1370
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1363.6939.9710.5589.6517.5480.1453.2414.5402.5
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance549.6
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1363.6939.9710.5589.6517.5480.1453.2414.5402.5
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low658.30.9115
Triple Number Coastal/Long Distance Medium501.41.1967
Triple Number Coastal/Long Distance High445.11.3479
Triple Number Windward/Leeward Low847.30.7081
Triple Number Windward/Leeward Medium617.30.9720
Triple Number Windward/Leeward High527.71.1370
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating549.61.0916
FinRating, kevyt tuuli984.51.0157
FinRating, kova tuuli434.41.1509
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low658.30.9115
Triple Number Coastal/Long Distance Medium501.41.1967
Triple Number Coastal/Long Distance High445.11.3479
Triple Number Windward/Leeward Low847.30.7081
Triple Number Windward/Leeward Medium617.30.9720
Triple Number Windward/Leeward High527.71.1370
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance1.0916
Triple Number Coastal/Long Distance Low0.9115
Triple Number Coastal/Long Distance Medium1.1967
Triple Number Coastal/Long Distance High1.3479
Triple Number Windward/Leeward Low0.7081
Triple Number Windward/Leeward Medium0.9720
Triple Number Windward/Leeward High1.1370
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1363.6939.9710.5589.6517.5480.1453.2414.5402.5
For information
General Purpose Handicap (GPH)568.4
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance549.61.0916
Triple Number Coastal/Long Distance Low658.30.9115
Triple Number Coastal/Long Distance Medium501.41.1967
Triple Number Coastal/Long Distance High445.11.3479
Triple Number Windward/Leeward Low847.30.7081
Triple Number Windward/Leeward Medium617.30.9720
Triple Number Windward/Leeward High527.71.1370
Saronikos S All Purpose576.51.0407
Saronikos S Upwind642.30.9341
Saronikos S Downwind502.21.1948
Saronikos N All Purpose603.80.9938
Saronikos N Upwind669.20.8966
Saronikos N Downwind549.11.0926
Saronikos SW All Purpose584.81.0259
Saronikos SW Upwind662.90.9051
Saronikos SW Downwind511.51.1730
Saronikos NE All Purpose630.70.9514
Saronikos NE Upwind628.20.9551
Saronikos NE Downwind622.50.9638
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1363.6939.9710.5589.6517.5480.1453.2414.5402.5
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low658.30.9115
Triple Number Coastal/Long Distance Medium501.41.1967
Triple Number Coastal/Long Distance High445.11.3479
Triple Number Windward/Leeward Low847.30.7081
Triple Number Windward/Leeward Medium617.30.9720
Triple Number Windward/Leeward High527.71.1370
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose525.11.1426
5-Band All Purpose Low796.60.7532
5-Band All Purpose L/M592.81.0122
5-Band All Purpose Med509.51.1776
5-Band All Purpose M/H462.71.2968
5-Band All Purpose High440.41.3623
Single Number Predominant Upwind541.31.1084
Single Number Predominant Reaching484.91.2374
Single Number Predominant Downwind517.91.1586
5-Band 50-50 Windward/Leeward Low999.10.6005
5-Band 50-50 Windward/Leeward L/M722.30.8307
5-Band 50-50 Windward/Leeward Med605.10.9916
5-Band 50-50 Windward/Leeward M/H536.61.1182
5-Band 50-50 Windward/Leeward High506.61.1844
5-Band 60-40 Windward/Leeward Low999.50.6003
5-Band 60-40 Windward/Leeward L/M728.00.8242
5-Band 60-40 Windward/Leeward Med615.20.9754
5-Band 60-40 Windward/Leeward M/H551.41.0881
5-Band 60-40 Windward/Leeward High524.71.1435
Triple Number 50-50 Windward/Leeward Low888.70.6752
Triple Number 50-50 Windward/Leeward Med617.40.9719
Triple Number 50-50 Windward/Leeward High527.71.1370
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward630.60.9515
Triple Number 60-40 Windward/Leeward Low890.80.6735
Triple Number 60-40 Windward/Leeward Med626.70.9574
Triple Number 60-40 Windward/Leeward High543.41.1041
Triple Number All-Purpose Low714.80.8394
Triple Number All-Purpose Med517.91.1585
Triple Number All-Purpose High456.31.3150
Triple Number Predominant Upwind Low721.10.8320
Triple Number Predominant Upwind Med533.61.1244
Triple Number Predominant Upwind High484.01.2398
Triple Number Predominant Reaching Low645.10.9300
Triple Number Predominant Reaching Med483.31.2415
Triple Number Predominant Reaching High417.41.4373
Triple Number Predominant Downwind Low720.60.8326
Triple Number Predominant Downwind Med508.11.1808
Triple Number Predominant Downwind High425.91.4086
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance549.61.0916
Triple Number Coastal/Long Distance Low658.30.9115
Triple Number Coastal/Long Distance Medium501.41.1967
Triple Number Coastal/Long Distance High445.11.3479
Triple Number Windward/Leeward Low847.30.7081
Triple Number Windward/Leeward Medium617.30.9720
Triple Number Windward/Leeward High527.71.1370
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1363.6939.9710.5589.6517.5480.1453.2414.5402.5
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance549.61.0916
Triple Number Coastal/Long Distance Low658.30.9115
Triple Number Coastal/Long Distance Medium501.41.1967
Triple Number Coastal/Long Distance High445.11.3479
Triple Number Windward/Leeward Low847.30.7081
Triple Number Windward/Leeward Medium617.30.9720
Triple Number Windward/Leeward High527.71.1370
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1363.6939.9710.5589.6517.5480.1453.2414.5402.5
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low658.3
Triple Number Coastal/Long Distance Medium501.4
Triple Number Coastal/Long Distance High445.1
Triple Number Windward/Leeward Low847.3
Triple Number Windward/Leeward Medium617.3
Triple Number Windward/Leeward High527.7
Predominantly Upwind542.5
Predominantly Downwind517.3
Predominantly Reaching494.5
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance549.61.0916
Triple Number Coastal/Long Distance Low658.30.9115
Triple Number Coastal/Long Distance Medium501.41.1967
Triple Number Coastal/Long Distance High445.11.3479
Triple Number Windward/Leeward Low847.30.7081
Triple Number Windward/Leeward Medium617.30.9720
Triple Number Windward/Leeward High527.71.1370
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1363.6939.9710.5589.6517.5480.1453.2414.5402.5
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.9115
Triple Number Coastal/Long Distance Medium1.1967
Triple Number Coastal/Long Distance High1.3479
Triple Number Windward/Leeward Low0.7081
Triple Number Windward/Leeward Medium0.9720
Triple Number Windward/Leeward High1.1370
Coastal/Long Distance1.0916
Predominantly Upwind1.1060
Predominantly Downwind1.1598
For information
General Purpose Handicap (GPH)568.4
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)1.1890
Distanseseilas Trippeltall svak vind0.9115
Distanseseilas Trippeltall mellomvind1.1967
Distanseseilas Trippeltall sterk vind1.3479
Pølsebane Trippeltall svak vind0.7081
Pølsebane Trippeltall mellomvind0.9720
Pølsebane Trippeltall sterk vind1.1370
Motvind Singeltall1.1060
Medvind Singeltall1.1598
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low658.30.9115
Triple Number Coastal/Long Distance Medium501.41.1967
Triple Number Coastal/Long Distance High445.11.3479
Triple Number Windward/Leeward Low847.30.7081
Triple Number Windward/Leeward Medium617.30.9720
Triple Number Windward/Leeward High527.71.1370
Coastal/Long Distance549.61.0916
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind542.51.1060
Predominantly Downwind517.31.1598
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore494.01.2146
Cape Doctor Coastal422.11.4214
Triple Number Coastal/Long Distance Low658.30.9115
Triple Number Coastal/Long Distance Medium501.41.1967
Triple Number Coastal/Long Distance High445.11.3479
Triple Number Windward/Leeward Low847.30.7081
Triple Number Windward/Leeward Medium617.30.9720
Triple Number Windward/Leeward High527.71.1370
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.9115
Triple Number Coastal/Long Distance Medium1.1967
Triple Number Coastal/Long Distance High1.3479
Triple Number Windward/Leeward Low0.7081
Triple Number Windward/Leeward Medium0.9720
Triple Number Windward/Leeward High1.1370
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.9115
Triple Number Coastal/Long Distance Medium1.1967
Triple Number Coastal/Long Distance High1.3479
Triple Number Windward/Leeward Low0.7081
Triple Number Windward/Leeward Medium0.9720
Triple Number Windward/Leeward High1.1370
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance549.61.0916
Triple Number Coastal/Long Distance Low658.30.9115
Triple Number Coastal/Long Distance Medium501.41.1967
Triple Number Coastal/Long Distance High445.11.3479
Triple Number Windward/Leeward Low847.30.7081
Triple Number Windward/Leeward Medium617.30.9720
Triple Number Windward/Leeward High527.71.1370
Predominantly Upwind542.51.1060
Predominantly Downwind517.31.1598
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1363.6939.9710.5589.6517.5480.1453.2414.5402.5
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance549.61.0916
Triple Number Coastal/Long Distance Low658.30.9115
Triple Number Coastal/Long Distance Medium501.41.1967
Triple Number Coastal/Long Distance High445.11.3479
Triple Number Windward/Leeward Low847.30.7081
Triple Number Windward/Leeward Medium617.30.9720
Triple Number Windward/Leeward High527.71.1370
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1363.6939.9710.5589.6517.5480.1453.2414.5402.5
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP525.11.1426 Predom. Dn High412.41.4551 5B AP M/H450.81.3310 TriNum AP Low658.30.9115 Predom. Rc Low710.60.8443 5B AP High431.41.3910 TriNum AP Med501.41.1966 Predom. Rc L/M538.31.1147 5B SF Bay Low839.10.7151 TriNum AP High445.11.3479 Predom. Rc Med469.01.2793 5B SF Bay L/M687.30.8730 TriNum W/L Low888.70.6752 Predom. Rc M/H430.31.3942 5B SF Bay Med583.41.0285 TriNum W/L Med617.30.9720 Predom. Rc High410.31.4623 5B SF Bay M/H523.81.1455 TriNum W/L Hig527.71.1370 5B W/L Low999.10.6005 5B SF Bay High497.71.2055 Predom. Upwind565.11.0617 5B W/L L/M722.30.8307 ChiMac Up Low692.30.8666 Predom. Reaching504.81.1885 5B W/L Med605.10.9916 ChiMac Up Med621.10.9661 Predom. Downwind542.11.1067 5B W/L M/H536.61.1182 ChiMac Up High539.01.1131 Predom. Up Low792.40.7572 5B W/L High506.61.1844 ChiMac Off Low691.40.8679 Predom. Up L/M599.11.0015 W/L 60-40 Low999.50.6003 ChiMac Off Med606.60.9891 Predom. Up Med523.61.1459 W/L 60-40 L/M728.00.8242 ChiMac Off High507.41.1824 Predom. Up M/H485.01.2371 W/L 60-40 Med615.20.9754 ChiMac AP Low688.20.8719 Predom. Up High469.21.2787 W/L 60-40 M/H551.41.0881 ChiMac AP Med611.30.9815 Predom. Dn Low809.80.7410 W/L 60-40 High524.71.1435 ChiMac AP High521.81.1499 Predom. Dn L/M590.21.0166 5B AP Low734.10.8173 BayMac Cove Island793.30.7563 Predom. Dn Med497.21.2067 5B AP L/M571.91.0492 BayMac Shore786.20.7632 Predom. Dn M/H441.31.3595 5B AP Med493.71.2153 Harvest Moon446.21.3448      SA/DSPL Up21.23SA/DSPL Dn36.46
ORC Ref  04140004W46 Issued on 05/08/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
BelmontFIN-4900
Avomeripurjehtijat ry
c/o Helsingfors Segelklubb ry
Vattuniemen puistotie 1
00210 HELSINKI
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassSWAN 51 (1981)Measurement11/08/2020HIN#36Plan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall15.633Maximum beam4.450Draft2.715Displacement19,005Wetted area50.65IMS L12.989LSM012.715Accomod. length14.463Sink (kg/mm) 34.98
VCGD-0.050VCGM-0.048 RM Rated (kg·m) 434.8Limit of positive stability(°) 114.6 Stability Index 125.8 BLR index 0.0000Default crew weight970 Declared crew weight 1,000
Centerboard weight0.0List angle0.0Canting keel angle0.0
PROPELLER
Propeller TypeFolding 3 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.590PBW0.148PIPA0.0090
PSD0.038PHD0.082PHL0.186
PSA19.0°ESL1.475
ST10.045ST20.140ST30.210
ST40.065ST50.300
RIG
BackstayAdjustable (NMP)ForestayAdjustable (turnbuckle)Inner forestayNot installedMast materialAluminumSingle headsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysYes (NMP)CheckstaysNoSpreaders2Rotating mastNo
P19.100IG21.300ISP21.300MDT10.170MDL10.275MDT20.170MDL20.240TL0.800MW0.240GO0.246
E5.500J6.360BAS1.750FSD0.050SFJ0.000SPL6.487WPLTPSBD0.225MWTMCG
PY0.000MDT1Y0.000MDL1Y0.000MDT2Y0.000MDL2Y0.000TLY0.000BASY0.000EY0.000BDY0.000IY0.000EB0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.050Flotation Date11/08/2020
SFFP0.978FFM1.390FF1.390LCFcl8.257SG
SAFP14.405FAM1.062FA1.062LCFsh8.552HBI1.174
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  04140004W46 Issued on 05/08/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
BelmontFIN-4900
Avomeripurjehtijat ry
c/o Helsingfors Segelklubb ry
Vattuniemen puistotie 1
00210 HELSINKI
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentA0.141.132.073.654.7663.5711/08/2020ONLINE APPLICATION
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentA0.051.012.034.186.488.9020.70NoNo 89.0911/08/2020ONLINE APPLICATION
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateCommentA21.0021.0021.0011.3911.20198.6611/08/2020ONLINE APPLICATION
NON MANUAL POWER CONTROLS (NMP)
SheetsYesMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsYes
CRUISER/RACER REQUIREMENTS*
Accommodation length14.5 mTable area0.66 m²Headroom1.90 mMinimum number of berths6Personal gear stowage0.24 m³Fresh water capacity255 lMinimum number of seats in cockpit6Food stowage0.36 m³Fuel capacity140 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.
ORC Ref  04140004W46 Issued on 05/08/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org