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
Non Spin/HSFClub 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°42,3°41,2°40,8°40,8°40,8°41,4°42,6°
Beat VMG1,882,723,333,744,024,184,264,284,17
52°2,984,215,005,555,906,096,206,276,23
60°3,224,455,245,786,106,296,406,496,48
75°3,384,615,435,976,286,486,626,796,86
90°3,294,525,375,966,316,546,717,007,21
110°2,824,095,025,766,246,536,757,177,56
120°2,653,884,835,586,126,466,707,137,59
135°2,303,454,405,175,806,236,516,947,37
150°1,942,933,734,495,115,666,086,637,04
Run VMG1,682,543,354,114,775,365,866,506,92
Gybe Angles142,3°143,3°171,7°173,0°174,4°175,3°176,8°178,4°178,4°
APH ToD:703,1CDL: 6,665APH ToT: 0,8534CertNo:
BOAT
ClassMamba 31DesignerBengt KarlssonBuilderBK Marin ABAge date01.1981Series date01.1979Offset fileMamba31RM_V3.offData fileUFO_AH0649RUS78_Mamba NS
HULL
Length Overall9,290 mMaximum Beam3,016 mDraft1,654 mDisplacement4 713 kgDLR10,5132IMS DivisionCruiser/RacerDynamic Allowance0,670%Age Allowance0,650%RS Assessment-0,152%
PROPELLER
InstallationShaft exposedTypeFeathering 2 bladesDiameter0,428m
CREW
Maximum weight350 kg(declared)Minimum weight220 kg ✱ when appliedCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail19,4719,79Headsail Luffed23,0423,04Headsail FlyingSymmetricAsymmetric
STORM SAIL AREAS Maximum (m²)
Trysail5,55Storm Jib7,03Heavy Weather Jib18,97
SAIL LIMITS
Headsails1
✱ One set on the forestay
✱ Zero set flying
✱ Woven polyester sails
Spinnakers0
✱ No spinnaker pole aboard
STABILITY
Righting Moment 60,4 kg·m Stability Index 123,9
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
Non Spin/HSFClub 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 VMG1917,91322,21082,4962,7895,6861,2846,0841,3862,7
52°1209,7856,0719,8648,2610,4590,8580,2574,2578,1
60°1118,6808,3686,6622,5590,1572,6562,5554,9555,3
75°1063,8781,4663,0603,0573,2555,8544,2529,8524,9
90°1095,9796,2670,6603,9570,5550,8536,5514,5499,4
110°1276,4881,1716,6624,7577,2551,2533,0502,2476,4
120°1361,0927,0745,2644,7588,3557,6537,7504,6474,5
135°1565,81044,9817,8696,7620,8577,8552,6518,8488,3
150°1854,81226,8963,9802,4704,1636,0591,8543,0511,1
Run VMG2141,71416,61073,9875,8754,3671,6613,9553,7520,2
Selected Courses
Windward / Leeward2029,81369,41078,2919,3825,0766,4730,0697,5691,4
All purpose1520,81044,8844,1734,8672,4635,3612,7588,6578,2
Single Number Scoring Options
Course Time On
Distance 		Time On
Time
Windward / Leeward868,80,6906
All purpose703,10,8534
Custom scoring options for Australia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low944,40,6353
Triple Number Coastal/Long Distance Medium698,20,8593
Triple Number Coastal/Long Distance High609,30,9847
Triple Number Windward/Leeward Low1223,70,4903
Triple Number Windward/Leeward Medium862,80,6954
Triple Number Windward/Leeward High726,90,8254
Custom scoring options for Austria
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance769,60,7797
Triple Number Coastal/Long Distance Low944,40,6353
Triple Number Coastal/Long Distance Medium698,20,8593
Triple Number Coastal/Long Distance High609,30,9847
Triple Number Windward/Leeward Low1223,70,4903
Triple Number Windward/Leeward Medium862,80,6954
Triple Number Windward/Leeward High726,90,8254
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2041,01374,11015,9830,0721,3661,3619,9561,6546,7
Custom scoring options for Brazil
Scoring Option Time On
Time
Upwind "bolina"0,6166
Downwind "popa"0,7047
70% up, 30% down "Ilhabela"0,6406
30% up, 70% down "Ilhabela-inverso"0,6758
Custom scoring options for Bulgaria
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low944,40,6353
Triple Number Coastal/Long Distance Medium698,20,8593
Triple Number Coastal/Long Distance High609,30,9847
Triple Number Windward/Leeward Low1223,70,4903
Triple Number Windward/Leeward Medium862,80,6954
Triple Number Windward/Leeward High726,90,8254
Predominantly Upwind750,50,7995
Predominantly Downwind725,40,8271
Custom scoring options for Canada
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP730,20,8217 Predom. Rc High557,41,0765 5B SF Bay L/M979,80,6124 TriNum AP Low944,40,6353 Predom. Dn Low1203,10,4987 5B SF Bay Med818,00,7335 TriNum AP Med698,30,8592 Predom. Dn L/M845,70,7095 5B SF Bay M/H725,60,8269 TriNum AP High609,30,9847 Predom. Dn Med692,70,8662 5B SF Bay High694,40,8641 TriNum W/L Low1288,50,4657 Predom. Dn M/H602,50,9958 5B AP Low1071,70,5599 TriNum W/L Med862,80,6954 Predom. Dn High563,61,0646 5B AP L/M809,80,7410 TriNum W/L Hig726,90,8254 ChiMac Up Low978,60,6131 5B AP Med685,90,8748 Predom. Upwind785,90,7635 ChiMac Up Med870,60,6892 5B AP M/H617,50,9717 Predom. Reaching702,80,8538 ChiMac Up High746,50,8037 5B AP High590,91,0153 Predom. Downwind767,40,7819 ChiMac Off Low1008,70,5948 5B W/L Low1461,70,4105 Predom. Up Low1131,00,5305 ChiMac Off Med870,70,6891 5B W/L L/M1027,70,5839 Predom. Up L/M836,80,7170 ChiMac Off High710,80,8441 5B W/L Med844,00,7109 Predom. Up Med721,60,8315 ChiMac AP Low986,50,6082 5B W/L M/H738,70,8123 Predom. Up M/H663,00,9050 ChiMac AP Med865,50,6933 5B W/L High702,10,8546 Predom. Up High645,60,9293 ChiMac AP High725,40,8272 W/L 60-40 Low1451,60,4133 Predom. Rc Low1030,00,5825 BayMac Cove Island1150,90,5213 W/L 60-40 L/M1031,70,5816 Predom. Rc L/M755,70,7940 BayMac Shore1138,20,5271 W/L 60-40 Med857,70,6995 Predom. Rc Med644,70,9306 Harvest Moon613,90,9773 W/L 60-40 M/H761,30,7881 Predom. Rc M/H583,61,0281 5B SF Bay Low1213,40,4945 W/L 60-40 High730,80,8210      SA/DSPL Up15,04SA/DSPL Dn15,04
Custom scoring options for Cyprus
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance769,60,7797
Triple Number Coastal/Long Distance Low944,40,6353
Triple Number Coastal/Long Distance Medium698,20,8593
Triple Number Coastal/Long Distance High609,30,9847
Triple Number Windward/Leeward Low1223,70,4903
Triple Number Windward/Leeward Medium862,80,6954
Triple Number Windward/Leeward High726,90,8254
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2041,01374,11015,9830,0721,3661,3619,9561,6546,7
Custom scoring options for Denmark
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance769,60,7797
Triple Number Coastal/Long Distance Low944,40,6353
Triple Number Coastal/Long Distance Medium698,20,8593
Triple Number Coastal/Long Distance High609,30,9847
Triple Number Windward/Leeward Low1223,70,4903
Triple Number Windward/Leeward Medium862,80,6954
Triple Number Windward/Leeward High726,90,8254
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2041,01374,11015,9830,0721,3661,3619,9561,6546,7
Custom scoring options for Spain
Scoring Option Time On
Distance
Coastal/Long Distance769,6
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2041,01374,11015,9830,0721,3661,3619,9561,6546,7
Custom scoring options for Estonia
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low944,40,6353
Triple Number Coastal/Long Distance Medium698,20,8593
Triple Number Coastal/Long Distance High609,30,9847
Triple Number Windward/Leeward Low1223,70,4903
Triple Number Windward/Leeward Medium862,80,6954
Triple Number Windward/Leeward High726,90,8254
Custom scoring options for Finland
Scoring Option Time On
Distance 		Time On
Time
FinRating769,60,7797
FinRating, kevyt tuuli1446,00,6916
FinRating, kova tuuli596,00,8389
Custom scoring options for France
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low944,40,6353
Triple Number Coastal/Long Distance Medium698,20,8593
Triple Number Coastal/Long Distance High609,30,9847
Triple Number Windward/Leeward Low1223,70,4903
Triple Number Windward/Leeward Medium862,80,6954
Triple Number Windward/Leeward High726,90,8254
Custom scoring options for Germany
Scoring Option Time On
Time
Coastal/Long Distance0,7797
Triple Number Coastal/Long Distance Low0,6353
Triple Number Coastal/Long Distance Medium0,8593
Triple Number Coastal/Long Distance High0,9847
Triple Number Windward/Leeward Low0,4903
Triple Number Windward/Leeward Medium0,6954
Triple Number Windward/Leeward High0,8254
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2041,01374,11015,9830,0721,3661,3619,9561,6546,7
For information
General Purpose Handicap (GPH)797,4
Custom scoring options for Greece
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance769,60,7797
Triple Number Coastal/Long Distance Low944,40,6353
Triple Number Coastal/Long Distance Medium698,20,8593
Triple Number Coastal/Long Distance High609,30,9847
Triple Number Windward/Leeward Low1223,70,4903
Triple Number Windward/Leeward Medium862,80,6954
Triple Number Windward/Leeward High726,90,8254
Saronikos S All Purpose803,40,7468
Saronikos S Upwind891,00,6734
Saronikos S Downwind714,90,8392
Saronikos N All Purpose856,00,7009
Saronikos N Upwind933,20,6430
Saronikos N Downwind801,80,7483
Saronikos SW All Purpose820,50,7312
Saronikos SW Upwind920,10,6521
Saronikos SW Downwind738,00,8131
Saronikos NE All Purpose901,80,6653
Saronikos NE Upwind874,10,6864
Saronikos NE Downwind921,70,6510
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2041,01374,11015,9830,0721,3661,3619,9561,6546,7
Custom scoring options for Hungary
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low944,40,6353
Triple Number Coastal/Long Distance Medium698,20,8593
Triple Number Coastal/Long Distance High609,30,9847
Triple Number Windward/Leeward Low1223,70,4903
Triple Number Windward/Leeward Medium862,80,6954
Triple Number Windward/Leeward High726,90,8254
Custom scoring options for Ireland
Scoring OptionTODTOT
Single Number All-Purpose730,20,8217
5-Band All Purpose Low1158,40,5180
5-Band All Purpose L/M836,80,7170
5-Band All Purpose Med704,70,8515
5-Band All Purpose M/H631,20,9506
5-Band All Purpose High603,00,9950
Single Number Predominant Upwind748,30,8018
Single Number Predominant Reaching670,00,8955
Single Number Predominant Downwind726,70,8256
5-Band 50-50 Windward/Leeward Low1461,70,4105
5-Band 50-50 Windward/Leeward L/M1027,70,5839
5-Band 50-50 Windward/Leeward Med844,00,7109
5-Band 50-50 Windward/Leeward M/H738,70,8123
5-Band 50-50 Windward/Leeward High702,10,8546
5-Band 60-40 Windward/Leeward Low1451,60,4133
5-Band 60-40 Windward/Leeward L/M1031,70,5816
5-Band 60-40 Windward/Leeward Med857,70,6995
5-Band 60-40 Windward/Leeward M/H761,30,7881
5-Band 60-40 Windward/Leeward High730,80,8210
Triple Number 50-50 Windward/Leeward Low1288,50,4657
Triple Number 50-50 Windward/Leeward Med863,00,6953
Triple Number 50-50 Windward/Leeward High726,90,8254
Scoring OptionTODTOT
Single Number 60-40 Windward/Leeward881,90,6803
Triple Number 60-40 Windward/Leeward Low1283,20,4676
Triple Number 60-40 Windward/Leeward Med875,40,6854
Triple Number 60-40 Windward/Leeward High751,10,7988
Triple Number All-Purpose Low1029,10,5830
Triple Number All-Purpose Med718,00,8356
Triple Number All-Purpose High622,50,9639
Triple Number Predominant Upwind Low1024,40,5857
Triple Number Predominant Upwind Med737,40,8137
Triple Number Predominant Upwind High661,90,9065
Triple Number Predominant Reaching Low924,40,6490
Triple Number Predominant Reaching Med666,70,8999
Triple Number Predominant Reaching High565,21,0615
Triple Number Predominant Downwind Low1057,80,5672
Triple Number Predominant Downwind Med710,60,8443
Triple Number Predominant Downwind High581,11,0326
Custom scoring options for Israel
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance769,60,7797
Triple Number Coastal/Long Distance Low944,40,6353
Triple Number Coastal/Long Distance Medium698,20,8593
Triple Number Coastal/Long Distance High609,30,9847
Triple Number Windward/Leeward Low1223,70,4903
Triple Number Windward/Leeward Medium862,80,6954
Triple Number Windward/Leeward High726,90,8254
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2041,01374,11015,9830,0721,3661,3619,9561,6546,7
Custom scoring options for Japan
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance769,60,7797
Triple Number Coastal/Long Distance Low944,40,6353
Triple Number Coastal/Long Distance Medium698,20,8593
Triple Number Coastal/Long Distance High609,30,9847
Triple Number Windward/Leeward Low1223,70,4903
Triple Number Windward/Leeward Medium862,80,6954
Triple Number Windward/Leeward High726,90,8254
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2041,01374,11015,9830,0721,3661,3619,9561,6546,7
Custom scoring options for Korea
Scoring Option Time On
Distance
Triple Number Coastal/Long Distance Low944,4
Triple Number Coastal/Long Distance Medium698,2
Triple Number Coastal/Long Distance High609,3
Triple Number Windward/Leeward Low1223,7
Triple Number Windward/Leeward Medium862,8
Triple Number Windward/Leeward High726,9
Predominantly Upwind750,5
Predominantly Downwind725,4
Predominantly Reaching687,1
Custom scoring options for Lithuania
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance769,60,7797
Triple Number Coastal/Long Distance Low944,40,6353
Triple Number Coastal/Long Distance Medium698,20,8593
Triple Number Coastal/Long Distance High609,30,9847
Triple Number Windward/Leeward Low1223,70,4903
Triple Number Windward/Leeward Medium862,80,6954
Triple Number Windward/Leeward High726,90,8254
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2041,01374,11015,9830,0721,3661,3619,9561,6546,7
Custom scoring options for Netherlands
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0,6353
Triple Number Coastal/Long Distance Medium0,8593
Triple Number Coastal/Long Distance High0,9847
Triple Number Windward/Leeward Low0,4903
Triple Number Windward/Leeward Medium0,6954
Triple Number Windward/Leeward High0,8254
Coastal/Long Distance0,7797
Predominantly Upwind0,7995
Predominantly Downwind0,8271
For information
General Purpose Handicap (GPH)797,4
Custom scoring options for Norway
Scoring Option Time On
Time
Distanseseilas Singeltall  (APH)0,8534
Distanseseilas Trippeltall svak vind0,6353
Distanseseilas Trippeltall mellomvind0,8593
Distanseseilas Trippeltall sterk vind0,9847
Pølsebane Trippeltall svak vind0,4903
Pølsebane Trippeltall mellomvind0,6954
Pølsebane Trippeltall sterk vind0,8254
Motvind Singeltall0,7995
Medvind Singeltall0,8271
Custom scoring options for Portugal
Scoring Option Time On
Distance 		Time On
Time
Triple Number Coastal/Long Distance Low944,40,6353
Triple Number Coastal/Long Distance Medium698,20,8593
Triple Number Coastal/Long Distance High609,30,9847
Triple Number Windward/Leeward Low1223,70,4903
Triple Number Windward/Leeward Medium862,80,6954
Triple Number Windward/Leeward High726,90,8254
Coastal/Long Distance769,60,7797
Custom scoring options for Russia
Scoring Option Time On
Distance 		Time On
Time
Predominantly Upwind750,50,7995
Predominantly Downwind725,40,8271
Custom scoring options for South Africa
Scoring Option Time On
Distance 		Time On
Time
Cape Doctor Inshore693,20,8655
Cape Doctor Coastal581,31,0322
Triple Number Coastal/Long Distance Low944,40,6353
Triple Number Coastal/Long Distance Medium698,20,8593
Triple Number Coastal/Long Distance High609,30,9847
Triple Number Windward/Leeward Low1223,70,4903
Triple Number Windward/Leeward Medium862,80,6954
Triple Number Windward/Leeward High726,90,8254
Custom scoring options for Slovenia
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0,6353
Triple Number Coastal/Long Distance Medium0,8593
Triple Number Coastal/Long Distance High0,9847
Triple Number Windward/Leeward Low0,4903
Triple Number Windward/Leeward Medium0,6954
Triple Number Windward/Leeward High0,8254
Custom scoring options for Switzerland
Scoring Option Time On
Time
Triple Number Coastal/Long Distance Low0,6353
Triple Number Coastal/Long Distance Medium0,8593
Triple Number Coastal/Long Distance High0,9847
Triple Number Windward/Leeward Low0,4903
Triple Number Windward/Leeward Medium0,6954
Triple Number Windward/Leeward High0,8254
Custom scoring options for Sweden
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance769,60,7797
Triple Number Coastal/Long Distance Low944,40,6353
Triple Number Coastal/Long Distance Medium698,20,8593
Triple Number Coastal/Long Distance High609,30,9847
Triple Number Windward/Leeward Low1223,70,4903
Triple Number Windward/Leeward Medium862,80,6954
Triple Number Windward/Leeward High726,90,8254
Predominantly Upwind750,50,7995
Predominantly Downwind725,40,8271
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2041,01374,11015,9830,0721,3661,3619,9561,6546,7
Custom scoring options for Ukraine
Scoring Option Time On
Distance 		Time On
Time
Coastal/Long Distance769,60,7797
Triple Number Coastal/Long Distance Low944,40,6353
Triple Number Coastal/Long Distance Medium698,20,8593
Triple Number Coastal/Long Distance High609,30,9847
Triple Number Windward/Leeward Low1223,70,4903
Triple Number Windward/Leeward Medium862,80,6954
Triple Number Windward/Leeward High726,90,8254
Performance Curve4 kt 6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance2041,01374,11015,9830,0721,3661,3619,9561,6546,7
Custom scoring options for United States of America
Scoring OptionTODTOT Scoring OptionTODTOT Scoring OptionTODTOT Single Number AP730,20,8217 Predom. Dn High563,61,0646 5B AP M/H617,50,9717 TriNum AP Low944,40,6353 Predom. Rc Low1030,00,5825 5B AP High590,91,0153 TriNum AP Med698,30,8592 Predom. Rc L/M755,70,7940 5B SF Bay Low1213,40,4945 TriNum AP High609,30,9847 Predom. Rc Med644,70,9306 5B SF Bay L/M979,80,6124 TriNum W/L Low1288,50,4657 Predom. Rc M/H583,61,0281 5B SF Bay Med818,00,7335 TriNum W/L Med862,80,6954 Predom. Rc High557,41,0765 5B SF Bay M/H725,60,8269 TriNum W/L Hig726,90,8254 5B W/L Low1461,70,4105 5B SF Bay High694,40,8641 Predom. Upwind785,90,7635 5B W/L L/M1027,70,5839 ChiMac Up Low978,60,6131 Predom. Reaching702,80,8538 5B W/L Med844,00,7109 ChiMac Up Med870,60,6892 Predom. Downwind767,40,7819 5B W/L M/H738,70,8123 ChiMac Up High746,50,8037 Predom. Up Low1131,00,5305 5B W/L High702,10,8546 ChiMac Off Low1008,70,5948 Predom. Up L/M836,80,7170 W/L 60-40 Low1451,60,4133 ChiMac Off Med870,70,6891 Predom. Up Med721,60,8315 W/L 60-40 L/M1031,70,5816 ChiMac Off High710,80,8441 Predom. Up M/H663,00,9050 W/L 60-40 Med857,70,6995 ChiMac AP Low986,50,6082 Predom. Up High645,60,9293 W/L 60-40 M/H761,30,7881 ChiMac AP Med865,50,6933 Predom. Dn Low1203,10,4987 W/L 60-40 High730,80,8210 ChiMac AP High725,40,8272 Predom. Dn L/M845,70,7095 5B AP Low1071,70,5599 BayMac Cove Island1150,90,5213 Predom. Dn Med692,70,8662 5B AP L/M809,80,7410 BayMac Shore1138,20,5271 Predom. Dn M/H602,50,9958 5B AP Med685,90,8748 Harvest Moon613,90,9773      SA/DSPL Up15,04SA/DSPL Dn15,04
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
Non Spin/HSFClub 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 L7,771LSM07,653Accomod. length9,290Sink (kg/mm) 13,21
VCGD-0,015VCGM-0,009 RM Rated (kg·m) 60,4Limit of positive stability(°) 120,4 Stability Index 123,9 BLR index 0,0000Default crew weight470 Declared crew weight 350
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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Non Spin/HSFClub 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
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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