Club
Certificate
2023

Boat

Twister

NOR 660

Norges Seilforbund
Sognsveien 73
0854 OSLO
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat Angles44.2°41.8°40.0°39.0°38.2°38.2°38.2°
Beat VMG3.724.494.875.055.155.225.26
52°5.756.697.077.237.317.377.43
60°6.116.947.307.467.547.617.70
75°6.397.147.517.747.897.988.12
90°6.357.157.577.898.148.338.56
110°5.776.877.487.888.258.599.09
120°5.526.717.397.848.258.659.57
135°4.906.127.007.547.978.419.47
150°4.055.186.227.037.537.948.82
Run VMG3.514.495.386.176.807.328.12
Gybe Angles137.6°147.8°150.2°156.8°168.2°177.2°178.1°

APH: 545.8

CDL: 9.435

GPH: 610.1

CertNo: 8975

BOAT
ClassDIVA 39DesignerB LindqvistBuilderDivaAge date01/1984Series date01/1984Offset fileH108.BOFData file8975
HULL
Length Overall11.800 mMaximum Beam3.022 mDraft1.828 mDisplacement4,983 kgDLR5.2198IMS DivisionCruiser/RacerDynamic Allowance0.110%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameter0.420m
CREW
Maximum weight673 kgMinimum weight505 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail39.1439.92Headsail Luffed33.3233.32Headsail Flying54.4954.49Symmetric81.9181.98Asymmetric67.0367.03 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail11.21Storm Jib8.03Heavy Weather Jib21.69
SAIL LIMITS
Headsails5  Spinnakers4 * Asymmetric may be tacked on the pole
STABILITY
Righting MomentN/AStability IndexN/A
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  03440002RHQIssued on 17/08/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

Twister

NOR 660

Norges Seilforbund
Sognsveien 73
0854 OSLO
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG966.7801.0739.1712.6699.1690.1684.9
52°625.8538.3509.5498.2492.7488.4484.2
60°589.6518.8493.5482.9477.3472.8467.7
75°563.4504.4479.2464.9456.4450.9443.1
90°567.1503.8475.4456.4442.1432.1420.7
110°623.7524.2481.5456.9436.2418.9395.9
120°652.3536.7487.2459.4436.5416.3376.2
135°734.3588.5514.2477.7451.7427.9380.2
150°889.3695.0579.2512.3478.3453.6408.3
Run VMG1026.9802.5668.8583.2529.5491.5443.6
Selected Courses
Windward / Leeward996.8801.8703.9647.9614.3590.8564.2
All purpose754.4623.7562.4529.0508.4493.2471.6
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward675.30.8885
All purpose545.81.0992
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low689.00.8708
Triple Number Coastal/Long Distance Medium542.91.1052
Triple Number Coastal/Long Distance High488.91.2273
Triple Number Windward/Leeward Low899.30.6672
Triple Number Windward/Leeward Medium671.00.8942
Triple Number Windward/Leeward High586.71.0226
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance595.51.0075
Triple Number Coastal/Long Distance Low689.00.8708
Triple Number Coastal/Long Distance Medium542.91.1052
Triple Number Coastal/Long Distance High488.91.2273
Triple Number Windward/Leeward Low899.30.6672
Triple Number Windward/Leeward Medium671.00.8942
Triple Number Windward/Leeward High586.71.0226
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance999.8754.1634.2565.1527.9497.8448.8
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7934
Downwind "popa"0.9239
70% up, 30% down "Ilhabela"0.8285
30% up, 70% down "Ilhabela-inverso"0.8805
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low689.00.8708
Triple Number Coastal/Long Distance Medium542.91.1052
Triple Number Coastal/Long Distance High488.91.2273
Triple Number Windward/Leeward Low899.30.6672
Triple Number Windward/Leeward Medium671.00.8942
Triple Number Windward/Leeward High586.71.0226
Predominantly Upwind586.21.0235
Predominantly Downwind556.91.0774
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low689.00.8708
Triple Number All Purpose Medium542.91.1052
Triple Number All Purpose High488.91.2273
Triple Number Windward/Leeward Low899.30.6672
Triple Number Windward/Leeward Medium671.00.8942
Triple Number Windward/Leeward High586.71.0226
Predominantly Upwind586.21.0235
Predominantly Downwind556.91.0774
Predominantly Upwind Low752.40.7974
Predominantly Upwind Medium605.80.9905
Predominantly Upwind High574.91.0436
Predominantly Downwind Low775.10.7740
Predominantly Downwind Medium556.11.0789
Predominantly Downwind High460.51.3028
Chicago-Mac Upwind1.0057
Chicago-Mac All Purpose1.0293
Chicago-Mac Downwind1.0573
Bayview-Mac Cove Island0.9678
Bayview-Mac Shore0.9786
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching515.01.1650
Predominantly Reaching Low620.00.9677
Predominantly Reaching Medium511.21.1738
Predominantly Reaching High455.21.3182
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low981.80.6111
5-Band Low / Medium823.60.7285
5-Band Medium659.70.9096
5-Band Medium / High595.11.0082
5-Band High568.81.0548
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance595.51.0075
Triple Number Coastal/Long Distance Low689.00.8708
Triple Number Coastal/Long Distance Medium542.91.1052
Triple Number Coastal/Long Distance High488.91.2273
Triple Number Windward/Leeward Low899.30.6672
Triple Number Windward/Leeward Medium671.00.8942
Triple Number Windward/Leeward High586.71.0226
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance999.8754.1634.2565.1527.9497.8448.8
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance595.51.0075
Triple Number Coastal/Long Distance Low689.00.8708
Triple Number Coastal/Long Distance Medium542.91.1052
Triple Number Coastal/Long Distance High488.91.2273
Triple Number Windward/Leeward Low899.30.6672
Triple Number Windward/Leeward Medium671.00.8942
Triple Number Windward/Leeward High586.71.0226
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance999.8754.1634.2565.1527.9497.8448.8
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance595.5
Triple Number Coastal/Long Distance Low689.0
Triple Number Coastal/Long Distance Medium542.9
Triple Number Coastal/Long Distance High488.9
Triple Number Windward/Leeward Low899.3
Triple Number Windward/Leeward Medium671.0
Triple Number Windward/Leeward High586.7
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance999.8754.1634.2565.1527.9497.8448.8
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance595.51.0075
Triple Number Coastal/Long Distance Low689.00.8708
Triple Number Coastal/Long Distance Medium542.91.1052
Triple Number Coastal/Long Distance High488.91.2273
Triple Number Windward/Leeward Low899.30.6672
Triple Number Windward/Leeward Medium671.00.8942
Triple Number Windward/Leeward High586.71.0226
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance999.8754.1634.2565.1527.9497.8448.8
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)595.51.0075
Triple Number Coastal/Long Distance Low689.00.8708
Triple Number Coastal/Long Distance Medium542.91.1052
Triple Number Coastal/Long Distance High488.91.2273
Triple Number Windward/Leeward Low899.30.6672
Triple Number Windward/Leeward Medium671.00.8942
Triple Number Windward/Leeward High586.71.0226
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance999.8754.1634.2565.1527.9497.8448.8
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low689.00.8708
Triple Number Coastal/Long Distance Medium542.91.1052
Triple Number Coastal/Long Distance High488.91.2273
Triple Number Windward/Leeward Low899.30.6672
Triple Number Windward/Leeward Medium671.00.8942
Triple Number Windward/Leeward High586.71.0226
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8708
Triple Number Coastal/Long Distance Medium1.1052
Triple Number Coastal/Long Distance High1.2273
Triple Number Windward/Leeward Low0.6672
Triple Number Windward/Leeward Medium0.8942
Triple Number Windward/Leeward High1.0226
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance999.8754.1634.2565.1527.9497.8448.8
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance595.51.0075
Triple Number Coastal/Long Distance Low689.00.8708
Triple Number Coastal/Long Distance Medium542.91.1052
Triple Number Coastal/Long Distance High488.91.2273
Triple Number Windward/Leeward Low899.30.6672
Triple Number Windward/Leeward Medium671.00.8942
Triple Number Windward/Leeward High586.71.0226
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance999.8754.1634.2565.1527.9497.8448.8
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low689.00.8708
Triple Number Coastal/Long Distance Medium542.91.1052
Triple Number Coastal/Long Distance High488.91.2273
Triple Number Windward/Leeward Low899.30.6672
Triple Number Windward/Leeward Medium671.00.8942
Triple Number Windward/Leeward High586.71.0226
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance595.51.0075
Triple Number Coastal/Long Distance Low689.00.8708
Triple Number Coastal/Long Distance Medium542.91.1052
Triple Number Coastal/Long Distance High488.91.2273
Triple Number Windward/Leeward Low899.30.6672
Triple Number Windward/Leeward Medium671.00.8942
Triple Number Windward/Leeward High586.71.0226
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance999.8754.1634.2565.1527.9497.8448.8
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low899.30.6672
Triple Number Windward/Leeward Medium671.00.8942
Triple Number Windward/Leeward High586.71.0226
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance999.8754.1634.2565.1527.9497.8448.8
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low689.0
Triple Number Coastal/Long Distance Medium542.9
Triple Number Coastal/Long Distance High488.9
Triple Number Windward/Leeward Low899.3
Triple Number Windward/Leeward Medium671.0
Triple Number Windward/Leeward High586.7
Predominantly Upwind586.2
Predominantly Downwind556.9
Predominantly Reaching529.5
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance595.51.0075
Triple Number Coastal/Long Distance Low689.00.8708
Triple Number Coastal/Long Distance Medium542.91.1052
Triple Number Coastal/Long Distance High488.91.2273
Triple Number Windward/Leeward Low899.30.6672
Triple Number Windward/Leeward Medium671.00.8942
Triple Number Windward/Leeward High586.71.0226
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance999.8754.1634.2565.1527.9497.8448.8
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8708
Triple Number Coastal/Long Distance Medium1.1052
Triple Number Coastal/Long Distance High1.2273
Triple Number Windward/Leeward Low0.6672
Triple Number Windward/Leeward Medium0.8942
Triple Number Windward/Leeward High1.0226
Coastal/Long Distance1.0075
Predominantly Upwind1.0235
Predominantly Downwind1.0774
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.8708
Tretall Distanseseilas Mellomvind1.1052
Tretall Distanseseilas Mye vind1.2273
Tretall Pølsebane Lite vind0.6672
Tretall Pølsebane Mellomvind0.8942
Tretall Pølsebane Mye vind1.0226
Distanseseilas ett tall (OSN 8-16kn)1.0075
Distanseseilas ett tall (APH 6-20kn)1.0992
Enkeltall Motvind1.0235
Enkeltall Medvind1.0774
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low689.00.8708
Triple Number Coastal/Long Distance Medium542.91.1052
Triple Number Coastal/Long Distance High488.91.2273
Triple Number Windward/Leeward Low899.30.6672
Triple Number Windward/Leeward Medium671.00.8942
Triple Number Windward/Leeward High586.71.0226
Coastal/Long Distance595.51.0075
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind586.21.0235
Predominantly Downwind556.91.0774
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore572.21.0486
Cape Doctor Coastal478.11.2551
Triple Number Coastal/Long Distance Low689.00.8708
Triple Number Coastal/Long Distance Medium542.91.1052
Triple Number Coastal/Long Distance High488.91.2273
Triple Number Windward/Leeward Low899.30.6672
Triple Number Windward/Leeward Medium671.00.8942
Triple Number Windward/Leeward High586.71.0226
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8708
Triple Number Coastal/Long Distance Medium1.1052
Triple Number Coastal/Long Distance High1.2273
Triple Number Windward/Leeward Low0.6672
Triple Number Windward/Leeward Medium0.8942
Triple Number Windward/Leeward High1.0226
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8708
Triple Number Coastal/Long Distance Medium1.1052
Triple Number Coastal/Long Distance High1.2273
Triple Number Windward/Leeward Low0.6672
Triple Number Windward/Leeward Medium0.8942
Triple Number Windward/Leeward High1.0226
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance595.51.0075
Triple Number Coastal/Long Distance Low689.00.8708
Triple Number Coastal/Long Distance Medium542.91.1052
Triple Number Coastal/Long Distance High488.91.2273
Triple Number Windward/Leeward Low899.30.6672
Triple Number Windward/Leeward Medium671.00.8942
Triple Number Windward/Leeward High586.71.0226
Predominantly Upwind586.21.0235
Predominantly Downwind556.91.0774
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance999.8754.1634.2565.1527.9497.8448.8
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance595.51.0075
Triple Number Coastal/Long Distance Low689.00.8708
Triple Number Coastal/Long Distance Medium542.91.1052
Triple Number Coastal/Long Distance High488.91.2273
Triple Number Windward/Leeward Low899.30.6672
Triple Number Windward/Leeward Medium671.00.8942
Triple Number Windward/Leeward High586.71.0226
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance999.8754.1634.2565.1527.9497.8448.8
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low689.00.8708
Triple Number All Purpose Medium542.91.1052
Triple Number All Purpose High488.91.2273
Triple Number Windward/Leeward Low899.30.6672
Triple Number Windward/Leeward Medium671.00.8942
Triple Number Windward/Leeward High586.71.0226
Predominantly Upwind586.21.0235
Predominantly Downwind556.91.0774
Predominantly Upwind Low752.40.7974
Predominantly Upwind Medium605.80.9905
Predominantly Upwind High574.91.0436
Predominantly Downwind Low775.10.7740
Predominantly Downwind Medium556.11.0789
Predominantly Downwind High460.51.3028
Chicago-Mac Upwind1.0057
Chicago-Mac All Purpose1.0293
Chicago-Mac Downwind1.0573
Bayview-Mac Cove Island0.9678
Bayview-Mac Shore0.9786
Harvest Moon Regatta472.11.2709
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy575.51.0426
San Francisco Bay Medium662.20.9061
Predominantly Reaching515.01.1650
Predominantly Reaching Low620.00.9677
Predominantly Reaching Medium511.21.1738
Predominantly Reaching High455.21.3182
Windward/Leeward 60-40 Low896.20.6695
Windward/Leeward 60-40 Medium689.50.8701
Windward/Leeward 60-40 High622.00.9647
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low981.80.6111
5-Band Low / Medium823.60.7285
5-Band Medium659.70.9096
5-Band Medium / High595.11.0082
5-Band High568.81.0548
ORC Ref  03440002RHQIssued on 17/08/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

Twister

NOR 660

Norges Seilforbund
Sognsveien 73
0854 OSLO
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassDIVA 39MeasurementHINPlan reviewHull constructionSolidCarbon RudderNoLight stanchionsNoTrim tabNo
LOA11.800Max. Beam3.022Draft1.828Displacement4,983Wetted area24.61IMS L10.088LSM09.846Acc. length9.822Sink (kg/mm) 17.89
VCGD-0.170VCGM-0.118RM Rated (kg·m) 105.4Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.420PBWPIPA0.0045
PSD0.020PHD0.060PHL0.130
PSA18.0°ESL0.810
ST10.030ST20.100ST30.110
ST40.110ST50.110
RIG
Forestay tensionAftInner stayNone FittedCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders2Rotating mastNo
P14.230IG12.640ISP12.900MDT10.120MDL10.170MDT20.110MDL20.120TL2.670MW0.170GO0.180
E4.500J3.880BAS1.650FSDFoilSFJ0.000SPL3.980WPLTPS4.500BDMWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodVCG entered directlyVCG entered-0.170Flotation Date01/01/2015MeasurerComment
SFFP0.626FFMFF1.109LCFcl6.525SG1.0000
SAFP11.238FAMFA0.925LCFsh6.700HBI1.006
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  03440002RHQIssued on 17/08/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
2023

Boat

Twister

NOR 660

Norges Seilforbund
Sognsveien 73
0854 OSLO
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment387-2005102519450.140.001.822.983.8139.1425/10/2005387-2007040317200.140.001.792.983.8139.0603/04/2007Dette er samme seilet som har nr.387200510251945. Som det går frem av målingen nå, er 3/4 bredda 1,79. 1 cm under maksmål. Da jeg målte det i 2005 ble 3/4 merket satt feil på grunn av at aft. Head Poi387-2013102513130.141.081.822.983.8139.0625/10/2013
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment466-2014052017040.051.102.224.456.528.3412.60NoYes054.4920/05/2014387-2008012118140.000.000.000.000.005.2212.54NoNo 33.3221/01/2008387-2005102519380.000.001.292.042.723.3812.06NoNo 22.8625/10/2005
SYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLAreaMeas.DateComment387-20060515205312.6012.6012.607.960.0081.9115/05/2006
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateComment387-20060403182512.9110.7911.857.065.70124%67.0303/04/2006
ORC Ref  03440002RHQIssued on 17/08/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org