TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST
Club Certificate2026
MambaRUS 9209
Novokolomiazhskii av 11-70
197375 St-Petersburg, Russia
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 Angles47,1°44,8°42,4°41,3°40,8°40,7°40,7°41,2°42,4°
Beat VMG1,872,723,333,744,034,204,284,314,21
52°2,974,205,005,565,916,116,226,296,25
60°3,214,455,255,796,116,306,416,506,50
75°3,384,605,435,976,286,486,626,816,87
90°3,484,845,776,296,566,706,807,007,22
110°3,584,975,936,446,757,007,247,557,74
120°3,474,835,816,386,717,007,297,798,05
135°3,054,375,366,106,526,827,127,748,22
150°2,543,734,705,496,086,446,707,207,74
Run VMG2,203,234,074,765,275,686,016,506,92
Gybe Angles141,1°145,6°148,0°148,5°152,0°157,5°161,9°178,4°178,6°
APH ToD:662,3CDL: 6,686APH ToT: 0,9059CertNo:
BOAT
ClassMamba 31DesignerBengt KarlssonBuilderBK Marin ABAge date01.1981Series date01.1979Offset fileMamba31RM_V3.offData fileUFO_AH0649RUS78_Mamba
HULL
Length Overall9,290 mMaximum Beam3,016 mDraft1,654 mDisplacement4 713 kgDLR10,5132IMS DivisionCruiser/RacerDynamic Allowance0,660%Age Allowance0,650%RS Assessment-0,152%
PROPELLER
InstallationShaft exposedTypeFeathering 2 bladesDiameter0,428m
CREW
Maximum weight375 kg(declared)Minimum weight245 kg ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail19,4719,79Headsail Luffed23,0423,04Headsail FlyingSymmetricAsymmetric65,2365,23 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS Maximum (m²)
Trysail5,55Storm Jib7,03Heavy Weather Jib18,97
SAIL LIMITS
Headsails5
✱ One set on the forestay
✱ Woven polyester sails
Spinnakers4
STABILITY
Righting Moment 60,4 kg·m Stability Index 123,8
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  TEST CERTIFICATE - NOT VALID FOR RACING
VPP ver: 2026 1.00 | © ORC | www.orc.org
TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST TEST
Club Certificate2026
MambaRUS 9209
Novokolomiazhskii av 11-70
197375 St-Petersburg, Russia
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 VMG1920,51323,51082,6961,7893,0857,4841,6836,0855,9
52°1211,3856,8719,3647,4609,3589,5578,8572,4575,8
60°1120,0809,0686,1621,8589,4571,8561,5553,6553,7
75°1065,3782,1662,8602,6572,9555,3543,5528,9523,8
90°1034,9744,2624,1572,3548,9537,5529,3514,0498,7
110°1005,0724,0606,6559,0533,7514,0497,1476,8464,9
120°1037,4745,9619,1564,6536,6514,6493,9462,1447,5
135°1179,7824,2671,1590,5552,4527,9505,9465,2437,9
150°1416,8964,5766,0655,6592,4558,8537,2500,2465,4
Run VMG1636,01113,7884,5757,0682,5634,2599,1553,9520,4
Selected Courses
Windward / Leeward1778,31218,6983,5859,3787,8745,8720,3694,9688,2
All purpose1341,0937,5769,1684,1638,2611,1593,7573,1564,5
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward823,40,7287
All purpose662,30,9059
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low853,40,7031
Triple Number Coastal/Long Distance Medium657,70,9123
Triple Number Coastal/Long Distance High590,31,0164
Triple Number Windward/Leeward Low1101,10,5449
Triple Number Windward/Leeward Medium817,40,7340
Triple Number Windward/Leeward High717,20,8366
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance721,70,8314
Triple Number Coastal/Long Distance Low853,40,7031
Triple Number Coastal/Long Distance Medium657,70,9123
Triple Number Coastal/Long Distance High590,31,0164
Triple Number Windward/Leeward Low1101,10,5449
Triple Number Windward/Leeward Medium817,40,7340
Triple Number Windward/Leeward High717,20,8366
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1764,01208,1921,6771,9682,9634,8599,3545,7534,2
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0,6180
Downwind "popa"0,8039
70% up, 30% down "Ilhabela"0,6641
30% up, 70% down "Ilhabela-inverso"0,7373
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low853,40,7031
Triple Number Coastal/Long Distance Medium657,70,9123
Triple Number Coastal/Long Distance High590,31,0164
Triple Number Windward/Leeward Low1101,10,5449
Triple Number Windward/Leeward Medium817,40,7340
Triple Number Windward/Leeward High717,20,8366
Predominantly Upwind726,40,8259
Predominantly Downwind661,20,9074
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP690,30,8691 Predom. Rc High541,31,1085 5B SF Bay L/M904,30,6635 TriNum AP Low853,30,7031 Predom. Dn Low1008,50,5949 5B SF Bay Med776,00,7732 TriNum AP Med657,70,9122 Predom. Dn L/M742,60,8080 5B SF Bay M/H706,50,8492 TriNum AP High590,31,0164 Predom. Dn Med637,70,9408 5B SF Bay High681,50,8804 TriNum W/L Low1156,40,5189 Predom. Dn M/H577,01,0399 5B AP Low943,10,6362 TriNum W/L Med817,40,7340 Predom. Dn High544,31,1022 5B AP L/M744,60,8058 TriNum W/L Hig717,20,8366 ChiMac Up Low933,80,6426 5B AP Med648,50,9252 Predom. Upwind760,80,7887 ChiMac Up Med837,00,7169 5B AP M/H596,91,0052 Predom. Reaching654,90,9162 ChiMac Up High725,50,8270 5B AP High575,11,0432 Predom. Downwind692,20,8669 ChiMac Off Low866,90,6922 5B W/L Low1299,70,4616 Predom. Up Low1071,00,5602 ChiMac Off Med767,40,7819 5B W/L L/M945,50,6346 Predom. Up L/M803,10,7471 ChiMac Off High650,70,9221 5B W/L Med803,30,7469 Predom. Up Med702,40,8543 ChiMac AP Low895,50,6700 5B W/L M/H726,00,8264 Predom. Up M/H652,70,9193 ChiMac AP Med798,70,7512 5B W/L High698,20,8594 Predom. Up High637,10,9417 ChiMac AP High685,90,8748 W/L 60-40 Low1322,30,4538 Predom. Rc Low915,90,6551 BayMac Cove Island1035,20,5796 W/L 60-40 L/M965,90,6212 Predom. Rc L/M691,00,8683 BayMac Shore1028,10,5836 W/L 60-40 Med824,70,7276 Predom. Rc Med608,00,9869 Harvest Moon577,01,0399 W/L 60-40 M/H750,30,7996 Predom. Rc M/H564,11,0636 5B SF Bay Low1097,70,5466 W/L 60-40 High726,60,8257      SA/DSPL Up15,04SA/DSPL Dn29,97
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance721,70,8314
Triple Number Coastal/Long Distance Low853,40,7031
Triple Number Coastal/Long Distance Medium657,70,9123
Triple Number Coastal/Long Distance High590,31,0164
Triple Number Windward/Leeward Low1101,10,5449
Triple Number Windward/Leeward Medium817,40,7340
Triple Number Windward/Leeward High717,20,8366
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1764,01208,1921,6771,9682,9634,8599,3545,7534,2
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance721,70,8314
Triple Number Coastal/Long Distance Low853,40,7031
Triple Number Coastal/Long Distance Medium657,70,9123
Triple Number Coastal/Long Distance High590,31,0164
Triple Number Windward/Leeward Low1101,10,5449
Triple Number Windward/Leeward Medium817,40,7340
Triple Number Windward/Leeward High717,20,8366
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1764,01208,1921,6771,9682,9634,8599,3545,7534,2
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance721,7
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1764,01208,1921,6771,9682,9634,8599,3545,7534,2
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low853,40,7031
Triple Number Coastal/Long Distance Medium657,70,9123
Triple Number Coastal/Long Distance High590,31,0164
Triple Number Windward/Leeward Low1101,10,5449
Triple Number Windward/Leeward Medium817,40,7340
Triple Number Windward/Leeward High717,20,8366
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating721,70,8314
FinRating, kevyt tuuli1277,10,7830
FinRating, kova tuuli579,50,8628
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low853,40,7031
Triple Number Coastal/Long Distance Medium657,70,9123
Triple Number Coastal/Long Distance High590,31,0164
Triple Number Windward/Leeward Low1101,10,5449
Triple Number Windward/Leeward Medium817,40,7340
Triple Number Windward/Leeward High717,20,8366
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance0,8314
Triple Number Coastal/Long Distance Low0,7031
Triple Number Coastal/Long Distance Medium0,9123
Triple Number Coastal/Long Distance High1,0164
Triple Number Windward/Leeward Low0,5449
Triple Number Windward/Leeward Medium0,7340
Triple Number Windward/Leeward High0,8366
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1764,01208,1921,6771,9682,9634,8599,3545,7534,2
For information
General Purpose Handicap (GPH)743,8
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance721,70,8314
Triple Number Coastal/Long Distance Low853,40,7031
Triple Number Coastal/Long Distance Medium657,70,9123
Triple Number Coastal/Long Distance High590,31,0164
Triple Number Windward/Leeward Low1101,10,5449
Triple Number Windward/Leeward Medium817,40,7340
Triple Number Windward/Leeward High717,20,8366
Saronikos S All Purpose776,30,7729
Saronikos S Upwind886,00,6772
Saronikos S Downwind631,30,9504
Saronikos N All Purpose803,70,7466
Saronikos N Upwind924,70,6488
Saronikos N Downwind674,90,8890
Saronikos SW All Purpose779,70,7695
Saronikos SW Upwind911,70,6581
Saronikos SW Downwind633,10,9477
Saronikos NE All Purpose825,90,7265
Saronikos NE Upwind862,10,6960
Saronikos NE Downwind754,00,7957
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1764,01208,1921,6771,9682,9634,8599,3545,7534,2
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low853,40,7031
Triple Number Coastal/Long Distance Medium657,70,9123
Triple Number Coastal/Long Distance High590,31,0164
Triple Number Windward/Leeward Low1101,10,5449
Triple Number Windward/Leeward Medium817,40,7340
Triple Number Windward/Leeward High717,20,8366
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose690,30,8691
5-Band All Purpose Low1034,40,5800
5-Band All Purpose L/M769,80,7794
5-Band All Purpose Med668,30,8978
5-Band All Purpose M/H614,10,9770
5-Band All Purpose High590,41,0163
Single Number Predominant Upwind725,80,8267
Single Number Predominant Reaching627,00,9569
Single Number Predominant Downwind661,30,9073
5-Band 50-50 Windward/Leeward Low1299,70,4616
5-Band 50-50 Windward/Leeward L/M945,50,6346
5-Band 50-50 Windward/Leeward Med803,30,7469
5-Band 50-50 Windward/Leeward M/H726,00,8264
5-Band 50-50 Windward/Leeward High698,20,8594
5-Band 60-40 Windward/Leeward Low1322,30,4538
5-Band 60-40 Windward/Leeward L/M965,90,6212
5-Band 60-40 Windward/Leeward Med824,70,7276
5-Band 60-40 Windward/Leeward M/H750,30,7996
5-Band 60-40 Windward/Leeward High726,60,8257
Triple Number 50-50 Windward/Leeward Low1156,40,5189
Triple Number 50-50 Windward/Leeward Med817,50,7339
Triple Number 50-50 Windward/Leeward High717,20,8366
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward845,20,7099
Triple Number 60-40 Windward/Leeward Low1177,60,5095
Triple Number 60-40 Windward/Leeward Med838,60,7155
Triple Number 60-40 Windward/Leeward High742,40,8081
Triple Number All-Purpose Low926,50,6476
Triple Number All-Purpose Med678,10,8848
Triple Number All-Purpose High607,10,9884
Triple Number Predominant Upwind Low967,60,6201
Triple Number Predominant Upwind Med715,30,8388
Triple Number Predominant Upwind High654,10,9173
Triple Number Predominant Reaching Low830,50,7225
Triple Number Predominant Reaching Med627,60,9561
Triple Number Predominant Reaching High546,51,0978
Triple Number Predominant Downwind Low901,30,6657
Triple Number Predominant Downwind Med646,80,9276
Triple Number Predominant Downwind High555,91,0793
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance721,70,8314
Triple Number Coastal/Long Distance Low853,40,7031
Triple Number Coastal/Long Distance Medium657,70,9123
Triple Number Coastal/Long Distance High590,31,0164
Triple Number Windward/Leeward Low1101,10,5449
Triple Number Windward/Leeward Medium817,40,7340
Triple Number Windward/Leeward High717,20,8366
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1764,01208,1921,6771,9682,9634,8599,3545,7534,2
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance721,70,8314
Triple Number Coastal/Long Distance Low853,40,7031
Triple Number Coastal/Long Distance Medium657,70,9123
Triple Number Coastal/Long Distance High590,31,0164
Triple Number Windward/Leeward Low1101,10,5449
Triple Number Windward/Leeward Medium817,40,7340
Triple Number Windward/Leeward High717,20,8366
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1764,01208,1921,6771,9682,9634,8599,3545,7534,2
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low853,4
Triple Number Coastal/Long Distance Medium657,7
Triple Number Coastal/Long Distance High590,3
Triple Number Windward/Leeward Low1101,1
Triple Number Windward/Leeward Medium817,4
Triple Number Windward/Leeward High717,2
Predominantly Upwind726,4
Predominantly Downwind661,2
Predominantly Reaching635,2
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance721,70,8314
Triple Number Coastal/Long Distance Low853,40,7031
Triple Number Coastal/Long Distance Medium657,70,9123
Triple Number Coastal/Long Distance High590,31,0164
Triple Number Windward/Leeward Low1101,10,5449
Triple Number Windward/Leeward Medium817,40,7340
Triple Number Windward/Leeward High717,20,8366
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1764,01208,1921,6771,9682,9634,8599,3545,7534,2
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0,7031
Triple Number Coastal/Long Distance Medium0,9123
Triple Number Coastal/Long Distance High1,0164
Triple Number Windward/Leeward Low0,5449
Triple Number Windward/Leeward Medium0,7340
Triple Number Windward/Leeward High0,8366
Coastal/Long Distance0,8314
Predominantly Upwind0,8259
Predominantly Downwind0,9074
For information
General Purpose Handicap (GPH)743,8
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)0,9059
Distanseseilas Trippeltall svak vind0,7031
Distanseseilas Trippeltall mellomvind0,9123
Distanseseilas Trippeltall sterk vind1,0164
Pølsebane Trippeltall svak vind0,5449
Pølsebane Trippeltall mellomvind0,7340
Pølsebane Trippeltall sterk vind0,8366
Motvind Singeltall0,8259
Medvind Singeltall0,9074
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low853,40,7031
Triple Number Coastal/Long Distance Medium657,70,9123
Triple Number Coastal/Long Distance High590,31,0164
Triple Number Windward/Leeward Low1101,10,5449
Triple Number Windward/Leeward Medium817,40,7340
Triple Number Windward/Leeward High717,20,8366
Coastal/Long Distance721,70,8314
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind726,40,8259
Predominantly Downwind661,20,9074
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore690,20,8693
Cape Doctor Coastal567,11,0581
Triple Number Coastal/Long Distance Low853,40,7031
Triple Number Coastal/Long Distance Medium657,70,9123
Triple Number Coastal/Long Distance High590,31,0164
Triple Number Windward/Leeward Low1101,10,5449
Triple Number Windward/Leeward Medium817,40,7340
Triple Number Windward/Leeward High717,20,8366
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0,7031
Triple Number Coastal/Long Distance Medium0,9123
Triple Number Coastal/Long Distance High1,0164
Triple Number Windward/Leeward Low0,5449
Triple Number Windward/Leeward Medium0,7340
Triple Number Windward/Leeward High0,8366
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0,7031
Triple Number Coastal/Long Distance Medium0,9123
Triple Number Coastal/Long Distance High1,0164
Triple Number Windward/Leeward Low0,5449
Triple Number Windward/Leeward Medium0,7340
Triple Number Windward/Leeward High0,8366
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance721,70,8314
Triple Number Coastal/Long Distance Low853,40,7031
Triple Number Coastal/Long Distance Medium657,70,9123
Triple Number Coastal/Long Distance High590,31,0164
Triple Number Windward/Leeward Low1101,10,5449
Triple Number Windward/Leeward Medium817,40,7340
Triple Number Windward/Leeward High717,20,8366
Predominantly Upwind726,40,8259
Predominantly Downwind661,20,9074
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1764,01208,1921,6771,9682,9634,8599,3545,7534,2
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance721,70,8314
Triple Number Coastal/Long Distance Low853,40,7031
Triple Number Coastal/Long Distance Medium657,70,9123
Triple Number Coastal/Long Distance High590,31,0164
Triple Number Windward/Leeward Low1101,10,5449
Triple Number Windward/Leeward Medium817,40,7340
Triple Number Windward/Leeward High717,20,8366
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance1764,01208,1921,6771,9682,9634,8599,3545,7534,2
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP690,30,8691 Predom. Dn High544,31,1022 5B AP M/H596,91,0052 TriNum AP Low853,30,7031 Predom. Rc Low915,90,6551 5B AP High575,11,0432 TriNum AP Med657,70,9122 Predom. Rc L/M691,00,8683 5B SF Bay Low1097,70,5466 TriNum AP High590,31,0164 Predom. Rc Med608,00,9869 5B SF Bay L/M904,30,6635 TriNum W/L Low1156,40,5189 Predom. Rc M/H564,11,0636 5B SF Bay Med776,00,7732 TriNum W/L Med817,40,7340 Predom. Rc High541,31,1085 5B SF Bay M/H706,50,8492 TriNum W/L Hig717,20,8366 5B W/L Low1299,70,4616 5B SF Bay High681,50,8804 Predom. Upwind760,80,7887 5B W/L L/M945,50,6346 ChiMac Up Low933,80,6426 Predom. Reaching654,90,9162 5B W/L Med803,30,7469 ChiMac Up Med837,00,7169 Predom. Downwind692,20,8669 5B W/L M/H726,00,8264 ChiMac Up High725,50,8270 Predom. Up Low1071,00,5602 5B W/L High698,20,8594 ChiMac Off Low866,90,6922 Predom. Up L/M803,10,7471 W/L 60-40 Low1322,30,4538 ChiMac Off Med767,40,7819 Predom. Up Med702,40,8543 W/L 60-40 L/M965,90,6212 ChiMac Off High650,70,9221 Predom. Up M/H652,70,9193 W/L 60-40 Med824,70,7276 ChiMac AP Low895,50,6700 Predom. Up High637,10,9417 W/L 60-40 M/H750,30,7996 ChiMac AP Med798,70,7512 Predom. Dn Low1008,50,5949 W/L 60-40 High726,60,8257 ChiMac AP High685,90,8748 Predom. Dn L/M742,60,8080 5B AP Low943,10,6362 BayMac Cove Island1035,20,5796 Predom. Dn Med637,70,9408 5B AP L/M744,60,8058 BayMac Shore1028,10,5836 Predom. Dn M/H577,01,0399 5B AP Med648,50,9252 Harvest Moon577,01,0399      SA/DSPL Up15,04SA/DSPL Dn29,97
ORC Ref  TEST CERTIFICATE - NOT VALID FOR RACING
VPP ver: 2026 1.00 | © ORC | www.orc.org
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Club Certificate2026
MambaRUS 9209
Novokolomiazhskii av 11-70
197375 St-Petersburg, Russia
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassMamba 31Measurement25.04.2023HINPlan reviewHull constructionSolidCarbon rudderNoLight stanchionsNoTrim tabNo
Length overall9,290Maximum beam3,016Draft1,654Displacement4 713Wetted area19,43IMS L7,780LSM07,653Accomod. length9,290Sink (kg/mm) 13,21
VCGD-0,015VCGM-0,009 RM Rated (kg·m) 60,4Limit of positive stability(°) 120,3 Stability Index 123,8 BLR index 0,0000Default crew weight470 Declared crew weight 375
Centerboard weightList angleCanting keel angle
PROPELLER
Propeller TypeFeathering 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0,428PBW0,136PIPA0,0036
PSD0,025PHD0,065PHL0,094
PSA12,0°ESL0,880
ST10,025ST20,097ST30,100
ST40,048ST50,165
RIG
BackstayAdjustableForestayFixedInner forestayFixedMast materialAluminumSingle headsail furlerYesMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoBase of mastFixedRunning backstaysNoCheckstaysNoSpreaders1Rotating mastNo
P10,390IG11,750ISP11,770MDT10,115MDL10,180MDT2MDL2TLNo TaperMW0,180GO0,210
E3,050J3,500BAS1,300FSD0,031SFJ0,300SPLWPLTPS4,465BD0,105MWT72,38MCG4,838
PYMDT1YMDL1YMDT2YMDL2YTLYBASYEYBDYIYEB
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodPoles incliningFlotation Date25.04.2023
SFFP0,460FFM1,015FF1,023LCFcl5,135SG1,0260
SAFP8,849FAM0,915FA0,919LCFsh5,349HBI0,950
W132,5W232,5W332,5W432,5
PD1106,0PD2110,0PD3105,0PD4107,0
WD10,150PLM2250,00GSA50,0RSA50,0RM60,7
INVENTORY
Fixed Ballast Total0
Total deductible
OTHER ITEMSIdKindDescriptionWeightLCGVCG002Anchor169,231,10001Chain241,50004Tools405,220,50Total deductible804,910,47
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Club Certificate2026
MambaRUS 9209
Novokolomiazhskii av 11-70
197375 St-Petersburg, Russia
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentM-New0,120,651,172,122,6219,4711.05.2024
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentH-New0,060,480,931,973,124,2711,22NoNo 23,04
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment013,0010,7711,896,626,45103%65,23
NON MANUAL POWER CONTROLS (NMP)
SheetsNoMainsail cunninghamNoJib trackNoSpinnaker retrieverNoBoomvangNoHeadsail cunninghamNoTack lineNoOuthaulNoMain travellerNoHalyardsNo
CRUISER/RACER REQUIREMENTS*
Accommodation length9,3 mTable area0,44 m²Headroom1,65 mMinimum number of berths4Personal gear stowage0,16 m³Fresh water capacity66 lMinimum number of seats in cockpit4Food stowage0,24 m³Fuel capacity36 lCabin soleStovesSinksGalley gear stowageToiletWash basinNavigation areaHanging locker
*This list is a summary of the requirements. See IMS Appendix 1 for details.
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