Club
Certificate
Non Spinnaker
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 Angles43.6°41.2°39.4°38.8°38.2°38.1°38.2°
Beat VMG3.584.374.835.035.155.225.26
52°5.496.476.977.187.297.367.43
60°5.806.717.177.397.507.587.67
75°6.006.887.337.607.797.918.06
90°5.886.837.347.667.938.168.45
110°5.176.327.097.547.908.258.92
120°4.836.016.877.407.788.158.92
135°4.175.346.296.997.457.828.57
150°3.504.605.576.397.027.458.16
Run VMG3.033.984.855.646.366.957.73
Gybe Angles144.8°150.5°155.9°164.6°171.8°178.1°179.0°

APH: 571.2

CDL: 9.404

GPH: 644.4

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 Allowance0.190%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 FlyingSymmetricAsymmetric
STORM SAIL AREAS (m²)
Trysail11.21Storm Jib8.03Heavy Weather Jib21.69
SAIL LIMITS
Headsails5  Spinnakers0 * Spinnaker pole aboard
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  03440002IV1Issued on 20/04/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Non Spinnaker
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 VMG1005.5824.6745.6715.0699.2690.1685.0
52°655.6556.7516.8501.5493.7489.0484.3
60°621.1536.6502.3487.3479.8474.9469.5
75°599.7523.6491.3473.6462.3455.3446.7
90°612.7527.3490.6469.8453.9441.4425.9
110°695.9569.7507.8477.3455.5436.3403.6
120°744.9598.9524.1486.7462.8441.9403.5
135°862.6673.8572.1514.8483.2460.6420.2
150°1027.8782.8646.8563.6512.9483.1441.4
Run VMG1186.8903.6742.7638.4566.1517.9465.7
Selected Courses
Windward / Leeward1096.1864.1744.1676.7632.7604.0575.4
All purpose828.2670.0591.6549.7523.7506.3483.9
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward708.80.8466
All purpose571.21.0504
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low749.20.8009
Triple Number Coastal/Long Distance Medium567.21.0578
Triple Number Coastal/Long Distance High502.31.1946
Triple Number Windward/Leeward Low980.10.6122
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High600.40.9993
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance625.30.9596
Triple Number Coastal/Long Distance Low749.20.8009
Triple Number Coastal/Long Distance Medium567.21.0578
Triple Number Coastal/Long Distance High502.31.1946
Triple Number Windward/Leeward Low980.10.6122
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High600.40.9993
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1105.2813.6669.3587.9544.2511.8462.6
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7828
Downwind "popa"0.8365
70% up, 30% down "Ilhabela"0.7982
30% up, 70% down "Ilhabela-inverso"0.8196
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low749.20.8009
Triple Number Coastal/Long Distance Medium567.21.0578
Triple Number Coastal/Long Distance High502.31.1946
Triple Number Windward/Leeward Low980.10.6122
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High600.40.9993
Predominantly Upwind605.10.9915
Predominantly Downwind598.31.0029
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low749.20.8009
Triple Number All Purpose Medium567.21.0578
Triple Number All Purpose High502.31.1946
Triple Number Windward/Leeward Low980.10.6122
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High600.40.9993
Predominantly Upwind605.10.9915
Predominantly Downwind598.31.0029
Predominantly Upwind Low799.60.7504
Predominantly Upwind Medium614.80.9759
Predominantly Upwind High578.21.0378
Predominantly Downwind Low869.10.6903
Predominantly Downwind Medium603.30.9945
Predominantly Downwind High486.11.2344
Chicago-Mac Upwind0.9740
Chicago-Mac All Purpose0.9765
Chicago-Mac Downwind0.9813
Bayview-Mac Cove Island0.9117
Bayview-Mac Shore0.9309
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching541.61.1078
Predominantly Reaching Low680.80.8814
Predominantly Reaching Medium539.91.1113
Predominantly Reaching High471.81.2717
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1078.30.5565
5-Band Low / Medium889.10.6749
5-Band Medium690.00.8695
5-Band Medium / High610.10.9834
5-Band High580.31.0339
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance625.30.9596
Triple Number Coastal/Long Distance Low749.20.8009
Triple Number Coastal/Long Distance Medium567.21.0578
Triple Number Coastal/Long Distance High502.31.1946
Triple Number Windward/Leeward Low980.10.6122
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High600.40.9993
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1105.2813.6669.3587.9544.2511.8462.6
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance625.30.9596
Triple Number Coastal/Long Distance Low749.20.8009
Triple Number Coastal/Long Distance Medium567.21.0578
Triple Number Coastal/Long Distance High502.31.1946
Triple Number Windward/Leeward Low980.10.6122
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High600.40.9993
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1105.2813.6669.3587.9544.2511.8462.6
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance625.3
Triple Number Coastal/Long Distance Low749.2
Triple Number Coastal/Long Distance Medium567.2
Triple Number Coastal/Long Distance High502.3
Triple Number Windward/Leeward Low980.1
Triple Number Windward/Leeward Medium703.8
Triple Number Windward/Leeward High600.4
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1105.2813.6669.3587.9544.2511.8462.6
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance625.30.9596
Triple Number Coastal/Long Distance Low749.20.8009
Triple Number Coastal/Long Distance Medium567.21.0578
Triple Number Coastal/Long Distance High502.31.1946
Triple Number Windward/Leeward Low980.10.6122
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High600.40.9993
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1105.2813.6669.3587.9544.2511.8462.6
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)625.30.9596
Triple Number Coastal/Long Distance Low749.20.8009
Triple Number Coastal/Long Distance Medium567.21.0578
Triple Number Coastal/Long Distance High502.31.1946
Triple Number Windward/Leeward Low980.10.6122
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High600.40.9993
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1105.2813.6669.3587.9544.2511.8462.6
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low749.20.8009
Triple Number Coastal/Long Distance Medium567.21.0578
Triple Number Coastal/Long Distance High502.31.1946
Triple Number Windward/Leeward Low980.10.6122
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High600.40.9993
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8009
Triple Number Coastal/Long Distance Medium1.0578
Triple Number Coastal/Long Distance High1.1946
Triple Number Windward/Leeward Low0.6122
Triple Number Windward/Leeward Medium0.8525
Triple Number Windward/Leeward High0.9993
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1105.2813.6669.3587.9544.2511.8462.6
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance625.30.9596
Triple Number Coastal/Long Distance Low749.20.8009
Triple Number Coastal/Long Distance Medium567.21.0578
Triple Number Coastal/Long Distance High502.31.1946
Triple Number Windward/Leeward Low980.10.6122
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High600.40.9993
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1105.2813.6669.3587.9544.2511.8462.6
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low749.20.8009
Triple Number Coastal/Long Distance Medium567.21.0578
Triple Number Coastal/Long Distance High502.31.1946
Triple Number Windward/Leeward Low980.10.6122
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High600.40.9993
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance625.30.9596
Triple Number Coastal/Long Distance Low749.20.8009
Triple Number Coastal/Long Distance Medium567.21.0578
Triple Number Coastal/Long Distance High502.31.1946
Triple Number Windward/Leeward Low980.10.6122
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High600.40.9993
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1105.2813.6669.3587.9544.2511.8462.6
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low980.10.6122
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High600.40.9993
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1105.2813.6669.3587.9544.2511.8462.6
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low749.2
Triple Number Coastal/Long Distance Medium567.2
Triple Number Coastal/Long Distance High502.3
Triple Number Windward/Leeward Low980.1
Triple Number Windward/Leeward Medium703.8
Triple Number Windward/Leeward High600.4
Predominantly Upwind605.1
Predominantly Downwind598.3
Predominantly Reaching562.5
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance625.30.9596
Triple Number Coastal/Long Distance Low749.20.8009
Triple Number Coastal/Long Distance Medium567.21.0578
Triple Number Coastal/Long Distance High502.31.1946
Triple Number Windward/Leeward Low980.10.6122
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High600.40.9993
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1105.2813.6669.3587.9544.2511.8462.6
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8009
Triple Number Coastal/Long Distance Medium1.0578
Triple Number Coastal/Long Distance High1.1946
Triple Number Windward/Leeward Low0.6122
Triple Number Windward/Leeward Medium0.8525
Triple Number Windward/Leeward High0.9993
Coastal/Long Distance0.9596
Predominantly Upwind0.9915
Predominantly Downwind1.0029
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.8009
Tretall Distanseseilas Mellomvind1.0578
Tretall Distanseseilas Mye vind1.1946
Tretall Pølsebane Lite vind0.6122
Tretall Pølsebane Mellomvind0.8525
Tretall Pølsebane Mye vind0.9993
Distanseseilas ett tall (OSN 8-16kn)0.9596
Distanseseilas ett tall (APH 6-20kn)1.0504
Enkeltall Motvind0.9915
Enkeltall Medvind1.0029
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low749.20.8009
Triple Number Coastal/Long Distance Medium567.21.0578
Triple Number Coastal/Long Distance High502.31.1946
Triple Number Windward/Leeward Low980.10.6122
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High600.40.9993
Coastal/Long Distance625.30.9596
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind605.10.9915
Predominantly Downwind598.31.0029
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore584.01.0275
Cape Doctor Coastal490.61.2229
Triple Number Coastal/Long Distance Low749.20.8009
Triple Number Coastal/Long Distance Medium567.21.0578
Triple Number Coastal/Long Distance High502.31.1946
Triple Number Windward/Leeward Low980.10.6122
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High600.40.9993
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8009
Triple Number Coastal/Long Distance Medium1.0578
Triple Number Coastal/Long Distance High1.1946
Triple Number Windward/Leeward Low0.6122
Triple Number Windward/Leeward Medium0.8525
Triple Number Windward/Leeward High0.9993
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8009
Triple Number Coastal/Long Distance Medium1.0578
Triple Number Coastal/Long Distance High1.1946
Triple Number Windward/Leeward Low0.6122
Triple Number Windward/Leeward Medium0.8525
Triple Number Windward/Leeward High0.9993
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance625.30.9596
Triple Number Coastal/Long Distance Low749.20.8009
Triple Number Coastal/Long Distance Medium567.21.0578
Triple Number Coastal/Long Distance High502.31.1946
Triple Number Windward/Leeward Low980.10.6122
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High600.40.9993
Predominantly Upwind605.10.9915
Predominantly Downwind598.31.0029
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1105.2813.6669.3587.9544.2511.8462.6
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance625.30.9596
Triple Number Coastal/Long Distance Low749.20.8009
Triple Number Coastal/Long Distance Medium567.21.0578
Triple Number Coastal/Long Distance High502.31.1946
Triple Number Windward/Leeward Low980.10.6122
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High600.40.9993
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1105.2813.6669.3587.9544.2511.8462.6
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low749.20.8009
Triple Number All Purpose Medium567.21.0578
Triple Number All Purpose High502.31.1946
Triple Number Windward/Leeward Low980.10.6122
Triple Number Windward/Leeward Medium703.80.8525
Triple Number Windward/Leeward High600.40.9993
Predominantly Upwind605.10.9915
Predominantly Downwind598.31.0029
Predominantly Upwind Low799.60.7504
Predominantly Upwind Medium614.80.9759
Predominantly Upwind High578.21.0378
Predominantly Downwind Low869.10.6903
Predominantly Downwind Medium603.30.9945
Predominantly Downwind High486.11.2344
Chicago-Mac Upwind0.9740
Chicago-Mac All Purpose0.9765
Chicago-Mac Downwind0.9813
Bayview-Mac Cove Island0.9117
Bayview-Mac Shore0.9309
Harvest Moon Regatta494.41.2135
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy590.81.0156
San Francisco Bay Medium695.70.8625
Predominantly Reaching541.61.1078
Predominantly Reaching Low680.80.8814
Predominantly Reaching Medium539.91.1113
Predominantly Reaching High471.81.2717
Windward/Leeward 60-40 Low967.10.6204
Windward/Leeward 60-40 Medium712.90.8416
Windward/Leeward 60-40 High631.10.9508
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1078.30.5565
5-Band Low / Medium889.10.6749
5-Band Medium690.00.8695
5-Band Medium / High610.10.9834
5-Band High580.31.0339
ORC Ref  03440002IV1Issued on 20/04/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Non Spinnaker
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 L10.086LSM09.846Acc. 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
E4.500J3.880BAS1.650FSDFoilSFJ0.000SPL3.980WPLTPS0.000BDMWT0.00MCG0.000
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  03440002IV1Issued on 20/04/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Non Spinnaker
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.DateComment387-2008012118140.000.000.000.000.005.2212.54NoNo 33.3221/01/2008387-2005102519380.000.001.292.042.723.3812.06NoNo 22.8625/10/2005
ORC Ref  03440002IV1Issued on 20/04/2023Valid until 31/03/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org