Club Certificate2026
ExpressLAT-43
Latvijas Jūras
burāšanas asociācija
Grecinieku street 11A-5, Riga
Riga LV-1050 Latvia
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 Angles45.9°43.4°41.6°40.0°38.5°38.6°38.7°39.4°41.3°
Beat VMG2.173.113.814.304.604.704.744.734.60
52°3.404.745.666.216.516.656.716.756.73
60°3.644.995.886.386.686.856.947.027.02
75°3.815.156.026.516.837.117.327.507.58
90°3.855.366.316.807.087.287.487.988.21
110°3.895.416.396.947.427.878.208.829.38
120°3.765.256.256.837.337.838.459.6610.61
135°3.284.705.796.496.977.488.069.8312.69
150°2.723.975.035.906.486.907.318.3810.92
Run VMG2.353.444.365.115.656.086.457.269.45
Gybe Angles139.6°143.5°147.8°150.1°153.4°159.7°162.6°144.7°140.5°
APH ToD:600.6CDL: 7.549APH ToT: 0.9991CertNo:068/26
BOAT
ClassRS 280DesignerUAB PlastolitasBuilderUAB PlastolitasAge date06/2007Series date06/2002Offset fileRS280.OFFData fileLAT-43
HULL
Length Overall8.300 mMaximum Beam2.656 mDraft1.750 mDisplacement2,100 kgDLR5.0830IMS DivisionPerformanceDynamic Allowance0.000%Age Allowance0.650%RS Assessment-0.127%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameterm
CREW
Maximum weight390 kg(declared)Minimum weight260 kg ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail23.8024.27Headsail Luffed16.1516.15Headsail FlyingSymmetricAsymmetric52.9852.98 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS Maximum (m²)
Trysail6.99Storm Jib5.44Heavy Weather Jib14.69
SAIL LIMITS
Headsails5
✱ One set on the forestay
Spinnakers4
STABILITY
Righting Moment 47.2 kg·m Stability Index 110.6
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  04960004WEQ Issued on 14/08/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
ExpressLAT-43
Latvijas Jūras
burāšanas asociācija
Grecinieku street 11A-5, Riga
Riga LV-1050 Latvia
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 VMG1658.51156.4945.6836.3783.1766.6759.2761.0782.1
52°1059.9759.1636.4579.7552.6541.7536.5533.2535.1
60°988.6720.8612.0564.3538.9525.2518.7512.8512.5
75°944.2698.6597.7553.2527.0506.0492.0479.7474.9
90°934.2671.1570.6529.7508.2494.5481.2451.3438.8
110°925.1665.9563.4519.0485.3457.5438.8408.1383.8
120°958.3685.7575.6527.2491.4459.8426.0372.5339.5
135°1096.8765.4621.8554.5516.2481.1446.8366.3283.7
150°1325.5907.5715.6610.3555.2522.0492.6429.4329.8
Run VMG1530.51047.9826.3704.6637.4592.2558.2495.8380.8
Selected Courses
Windward / Leeward1594.51102.2886.0770.4710.2679.4658.7628.4581.4
All purpose1204.9847.4695.7620.8580.3556.0537.9507.9477.3
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward744.00.8064
All purpose600.60.9991
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low771.50.7777
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High531.21.1296
Triple Number Windward/Leeward Low994.00.6036
Triple Number Windward/Leeward Medium737.30.8138
Triple Number Windward/Leeward High652.50.9195
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance653.40.9183
Triple Number Coastal/Long Distance Low771.50.7777
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High531.21.1296
Triple Number Windward/Leeward Low994.00.6036
Triple Number Windward/Leeward Medium737.30.8138
Triple Number Windward/Leeward High652.50.9195
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1588.11096.7832.5696.4619.2578.2542.7480.2450.0
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0.6991
Downwind "popa"0.8638
70% up, 30% down "Ilhabela"0.7415
30% up, 70% down "Ilhabela-inverso"0.8067
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low771.50.7777
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High531.21.1296
Triple Number Windward/Leeward Low994.00.6036
Triple Number Windward/Leeward Medium737.30.8138
Triple Number Windward/Leeward High652.50.9195
Predominantly Upwind654.00.9174
Predominantly Downwind606.80.9888
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP625.40.9594 Predom. Rc High471.31.2730 5B SF Bay L/M812.00.7389 TriNum AP Low771.50.7777 Predom. Dn Low925.90.6480 5B SF Bay Med699.30.8580 TriNum AP Med597.41.0044 Predom. Dn L/M683.30.8781 5B SF Bay M/H639.70.9379 TriNum AP High531.21.1296 Predom. Dn Med587.31.0216 5B SF Bay High605.50.9910 TriNum W/L Low1042.60.5755 Predom. Dn M/H522.81.1477 5B AP Low856.10.7009 TriNum W/L Med737.30.8138 Predom. Dn High468.21.2815 5B AP L/M674.60.8894 TriNum W/L Hig652.50.9195 ChiMac Up Low831.90.7213 5B AP Med589.01.0186 Predom. Upwind683.20.8783 ChiMac Up Med748.30.8018 5B AP M/H539.41.1123 Predom. Reaching594.81.0088 ChiMac Up High651.70.9207 5B AP High507.81.1816 Predom. Downwind631.80.9496 ChiMac Off Low796.80.7530 5B W/L Low1171.20.5123 Predom. Up Low951.80.6304 ChiMac Off Med704.30.8519 5B W/L L/M851.10.7049 Predom. Up L/M717.70.8359 ChiMac Off High591.21.0149 5B W/L Med725.40.8271 Predom. Up Med633.00.9479 ChiMac AP Low810.10.7406 5B W/L M/H661.40.9072 Predom. Up M/H592.91.0120 ChiMac AP Med723.30.8295 5B W/L High625.50.9592 Predom. Up High573.51.0462 ChiMac AP High619.60.9683 W/L 60-40 Low1182.80.5073 Predom. Rc Low830.00.7229 BayMac Cove Island934.50.6421 W/L 60-40 L/M863.70.6947 Predom. Rc L/M630.70.9514 BayMac Shore927.30.6470 W/L 60-40 Med740.50.8102 Predom. Rc Med557.31.0767 Harvest Moon521.61.1504 W/L 60-40 M/H681.70.8802 Predom. Rc M/H509.91.1767 5B SF Bay Low987.00.6079 W/L 60-40 High653.30.9185      SA/DSPL Up24.31SA/DSPL Dn46.70
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance653.40.9183
Triple Number Coastal/Long Distance Low771.50.7777
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High531.21.1296
Triple Number Windward/Leeward Low994.00.6036
Triple Number Windward/Leeward Medium737.30.8138
Triple Number Windward/Leeward High652.50.9195
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1588.11096.7832.5696.4619.2578.2542.7480.2450.0
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance653.40.9183
Triple Number Coastal/Long Distance Low771.50.7777
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High531.21.1296
Triple Number Windward/Leeward Low994.00.6036
Triple Number Windward/Leeward Medium737.30.8138
Triple Number Windward/Leeward High652.50.9195
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1588.11096.7832.5696.4619.2578.2542.7480.2450.0
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance653.4
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1588.11096.7832.5696.4619.2578.2542.7480.2450.0
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low771.50.7777
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High531.21.1296
Triple Number Windward/Leeward Low994.00.6036
Triple Number Windward/Leeward Medium737.30.8138
Triple Number Windward/Leeward High652.50.9195
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating653.40.9183
FinRating, kevyt tuuli1152.00.8681
FinRating, kova tuuli507.30.9855
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low771.50.7777
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High531.21.1296
Triple Number Windward/Leeward Low994.00.6036
Triple Number Windward/Leeward Medium737.30.8138
Triple Number Windward/Leeward High652.50.9195
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance0.9183
Triple Number Coastal/Long Distance Low0.7777
Triple Number Coastal/Long Distance Medium1.0045
Triple Number Coastal/Long Distance High1.1296
Triple Number Windward/Leeward Low0.6036
Triple Number Windward/Leeward Medium0.8138
Triple Number Windward/Leeward High0.9195
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1588.11096.7832.5696.4619.2578.2542.7480.2450.0
For information
General Purpose Handicap (GPH)674.2
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance653.40.9183
Triple Number Coastal/Long Distance Low771.50.7777
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High531.21.1296
Triple Number Windward/Leeward Low994.00.6036
Triple Number Windward/Leeward Medium737.30.8138
Triple Number Windward/Leeward High652.50.9195
Saronikos S All Purpose688.90.8710
Saronikos S Upwind784.00.7653
Saronikos S Downwind569.91.0529
Saronikos N All Purpose724.90.8277
Saronikos N Upwind821.80.7301
Saronikos N Downwind624.70.9605
Saronikos SW All Purpose690.20.8694
Saronikos SW Upwind807.10.7434
Saronikos SW Downwind571.51.0499
Saronikos NE All Purpose747.10.8031
Saronikos NE Upwind770.00.7792
Saronikos NE Downwind696.20.8619
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1588.11096.7832.5696.4619.2578.2542.7480.2450.0
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low771.50.7777
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High531.21.1296
Triple Number Windward/Leeward Low994.00.6036
Triple Number Windward/Leeward Medium737.30.8138
Triple Number Windward/Leeward High652.50.9195
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose625.40.9594
5-Band All Purpose Low934.00.6424
5-Band All Purpose L/M698.00.8596
5-Band All Purpose Med608.80.9856
5-Band All Purpose M/H557.31.0767
5-Band All Purpose High521.11.1515
Single Number Predominant Upwind652.90.9189
Single Number Predominant Reaching572.71.0477
Single Number Predominant Downwind607.60.9875
5-Band 50-50 Windward/Leeward Low1171.20.5123
5-Band 50-50 Windward/Leeward L/M851.10.7049
5-Band 50-50 Windward/Leeward Med725.40.8271
5-Band 50-50 Windward/Leeward M/H661.40.9072
5-Band 50-50 Windward/Leeward High625.50.9592
5-Band 60-40 Windward/Leeward Low1182.80.5073
5-Band 60-40 Windward/Leeward L/M863.70.6947
5-Band 60-40 Windward/Leeward Med740.50.8102
5-Band 60-40 Windward/Leeward M/H681.70.8802
5-Band 60-40 Windward/Leeward High653.30.9185
Triple Number 50-50 Windward/Leeward Low1042.60.5755
Triple Number 50-50 Windward/Leeward Med737.30.8137
Triple Number 50-50 Windward/Leeward High652.50.9195
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward759.60.7899
Triple Number 60-40 Windward/Leeward Low1054.20.5691
Triple Number 60-40 Windward/Leeward Med751.90.7979
Triple Number 60-40 Windward/Leeward High674.30.8898
Triple Number All-Purpose Low837.70.7162
Triple Number All-Purpose Med617.40.9719
Triple Number All-Purpose High548.01.0949
Triple Number Predominant Upwind Low862.90.6954
Triple Number Predominant Upwind Med643.50.9323
Triple Number Predominant Upwind High594.21.0097
Triple Number Predominant Reaching Low753.40.7964
Triple Number Predominant Reaching Med574.41.0445
Triple Number Predominant Reaching High489.61.2256
Triple Number Predominant Downwind Low827.10.7254
Triple Number Predominant Downwind Med597.31.0045
Triple Number Predominant Downwind High498.31.2042
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance653.40.9183
Triple Number Coastal/Long Distance Low771.50.7777
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High531.21.1296
Triple Number Windward/Leeward Low994.00.6036
Triple Number Windward/Leeward Medium737.30.8138
Triple Number Windward/Leeward High652.50.9195
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1588.11096.7832.5696.4619.2578.2542.7480.2450.0
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance653.40.9183
Triple Number Coastal/Long Distance Low771.50.7777
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High531.21.1296
Triple Number Windward/Leeward Low994.00.6036
Triple Number Windward/Leeward Medium737.30.8138
Triple Number Windward/Leeward High652.50.9195
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1588.11096.7832.5696.4619.2578.2542.7480.2450.0
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low771.5
Triple Number Coastal/Long Distance Medium597.3
Triple Number Coastal/Long Distance High531.2
Triple Number Windward/Leeward Low994.0
Triple Number Windward/Leeward Medium737.3
Triple Number Windward/Leeward High652.5
Predominantly Upwind654.0
Predominantly Downwind606.8
Predominantly Reaching581.3
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance653.40.9183
Triple Number Coastal/Long Distance Low771.50.7777
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High531.21.1296
Triple Number Windward/Leeward Low994.00.6036
Triple Number Windward/Leeward Medium737.30.8138
Triple Number Windward/Leeward High652.50.9195
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1588.11096.7832.5696.4619.2578.2542.7480.2450.0
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7777
Triple Number Coastal/Long Distance Medium1.0045
Triple Number Coastal/Long Distance High1.1296
Triple Number Windward/Leeward Low0.6036
Triple Number Windward/Leeward Medium0.8138
Triple Number Windward/Leeward High0.9195
Coastal/Long Distance0.9183
Predominantly Upwind0.9174
Predominantly Downwind0.9888
For information
General Purpose Handicap (GPH)674.2
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)0.9991
Distanseseilas Trippeltall svak vind0.7777
Distanseseilas Trippeltall mellomvind1.0045
Distanseseilas Trippeltall sterk vind1.1296
Pølsebane Trippeltall svak vind0.6036
Pølsebane Trippeltall mellomvind0.8138
Pølsebane Trippeltall sterk vind0.9195
Motvind Singeltall0.9174
Medvind Singeltall0.9888
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low771.50.7777
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High531.21.1296
Triple Number Windward/Leeward Low994.00.6036
Triple Number Windward/Leeward Medium737.30.8138
Triple Number Windward/Leeward High652.50.9195
Coastal/Long Distance653.40.9183
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind654.00.9174
Predominantly Downwind606.80.9888
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore595.51.0075
Cape Doctor Coastal486.51.2333
Triple Number Coastal/Long Distance Low771.50.7777
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High531.21.1296
Triple Number Windward/Leeward Low994.00.6036
Triple Number Windward/Leeward Medium737.30.8138
Triple Number Windward/Leeward High652.50.9195
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7777
Triple Number Coastal/Long Distance Medium1.0045
Triple Number Coastal/Long Distance High1.1296
Triple Number Windward/Leeward Low0.6036
Triple Number Windward/Leeward Medium0.8138
Triple Number Windward/Leeward High0.9195
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0.7777
Triple Number Coastal/Long Distance Medium1.0045
Triple Number Coastal/Long Distance High1.1296
Triple Number Windward/Leeward Low0.6036
Triple Number Windward/Leeward Medium0.8138
Triple Number Windward/Leeward High0.9195
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance653.40.9183
Triple Number Coastal/Long Distance Low771.50.7777
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High531.21.1296
Triple Number Windward/Leeward Low994.00.6036
Triple Number Windward/Leeward Medium737.30.8138
Triple Number Windward/Leeward High652.50.9195
Predominantly Upwind654.00.9174
Predominantly Downwind606.80.9888
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1588.11096.7832.5696.4619.2578.2542.7480.2450.0
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance653.40.9183
Triple Number Coastal/Long Distance Low771.50.7777
Triple Number Coastal/Long Distance Medium597.31.0045
Triple Number Coastal/Long Distance High531.21.1296
Triple Number Windward/Leeward Low994.00.6036
Triple Number Windward/Leeward Medium737.30.8138
Triple Number Windward/Leeward High652.50.9195
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1588.11096.7832.5696.4619.2578.2542.7480.2450.0
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP625.40.9594 Predom. Dn High468.21.2815 5B AP M/H539.41.1123 TriNum AP Low771.50.7777 Predom. Rc Low830.00.7229 5B AP High507.81.1816 TriNum AP Med597.41.0044 Predom. Rc L/M630.70.9514 5B SF Bay Low987.00.6079 TriNum AP High531.21.1296 Predom. Rc Med557.31.0767 5B SF Bay L/M812.00.7389 TriNum W/L Low1042.60.5755 Predom. Rc M/H509.91.1767 5B SF Bay Med699.30.8580 TriNum W/L Med737.30.8138 Predom. Rc High471.31.2730 5B SF Bay M/H639.70.9379 TriNum W/L Hig652.50.9195 5B W/L Low1171.20.5123 5B SF Bay High605.50.9910 Predom. Upwind683.20.8783 5B W/L L/M851.10.7049 ChiMac Up Low831.90.7213 Predom. Reaching594.81.0088 5B W/L Med725.40.8271 ChiMac Up Med748.30.8018 Predom. Downwind631.80.9496 5B W/L M/H661.40.9072 ChiMac Up High651.70.9207 Predom. Up Low951.80.6304 5B W/L High625.50.9592 ChiMac Off Low796.80.7530 Predom. Up L/M717.70.8359 W/L 60-40 Low1182.80.5073 ChiMac Off Med704.30.8519 Predom. Up Med633.00.9479 W/L 60-40 L/M863.70.6947 ChiMac Off High591.21.0149 Predom. Up M/H592.91.0120 W/L 60-40 Med740.50.8102 ChiMac AP Low810.10.7406 Predom. Up High573.51.0462 W/L 60-40 M/H681.70.8802 ChiMac AP Med723.30.8295 Predom. Dn Low925.90.6480 W/L 60-40 High653.30.9185 ChiMac AP High619.60.9683 Predom. Dn L/M683.30.8781 5B AP Low856.10.7009 BayMac Cove Island934.50.6421 Predom. Dn Med587.31.0216 5B AP L/M674.60.8894 BayMac Shore927.30.6470 Predom. Dn M/H522.81.1477 5B AP Med589.01.0186 Harvest Moon521.61.1504      SA/DSPL Up24.31SA/DSPL Dn46.70
ORC Ref  04960004WEQ Issued on 14/08/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
ExpressLAT-43
Latvijas Jūras
burāšanas asociācija
Grecinieku street 11A-5, Riga
Riga LV-1050 Latvia
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassRS 280Measurement29/07/2026HINPlan reviewHull constructionCoredCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall8.300Maximum beam2.656Draft1.750Displacement2,100Wetted area15.35IMS L7.824LSM07.447Accomod. length8.282Sink (kg/mm) 11.61
VCGD-0.070VCGM-0.091 RM Rated (kg·m) 47.2Limit of positive stability(°) 113.9 Stability Index 110.6 BLR index 0.0000Default crew weight452 Declared crew weight 390
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRDPBW
EDLST1ST2
ST3ST4ST5
RIG
BackstayAdjustableForestayFixedInner forestayNot installedMast materialAluminumSingle headsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysNoCheckstaysNoSpreaders2Rotating mastNo
P10.570IG10.397ISP10.802MDT10.115MDL10.160MDT20.105MDL20.120TL1.122MW0.159GO0.169
E3.775J3.105BAS1.227FSD0.035SFJ0.000SPL0.000WPLTPS3.865BD0.135MWT80.50MCG4.480
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date29/07/2026
SFFP0.500FFMFF0.863LCFcl4.304SG
SAFP7.839FAMFA0.671LCFsh4.488HBI0.730
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  04960004WEQ Issued on 14/08/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org
Club Certificate2026
ExpressLAT-43
Latvijas Jūras
burāšanas asociācija
Grecinieku street 11A-5, Riga
Riga LV-1050 Latvia
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment00.190.751.342.423.2723.8029/07/2026
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment00.050.370.721.522.483.509.88NoNo 16.1529/07/2026
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment010.9510.1110.535.896.6389%52.9829/07/2026
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
ORC Ref  04960004WEQ Issued on 14/08/2026 Valid until 31/12/2026
VPP ver: 2026 1.00 | © ORC | www.orc.org