Club
Certificate
Non Spinnaker
2023

Boat

BOOMERANG

USA 25500

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat Angles41.4°40.0°38.1°37.2°37.0°37.0°37.0°
Beat VMG3.414.034.394.544.624.674.69
52°5.095.806.126.296.386.436.48
60°5.305.946.246.416.526.596.65
75°5.426.026.336.536.696.816.94
90°5.305.986.326.566.766.937.21
110°4.735.636.166.496.767.027.52
120°4.485.446.056.416.696.967.56
135°4.014.985.726.186.486.747.33
150°3.414.385.185.806.216.497.00
Run VMG2.963.804.535.195.766.166.69
Gybe Angles146.6°152.3°158.6°168.2°176.6°179.0°179.0°

APH: 639.3

CDL: 7.376

GPH: 713.5

CertNo: US2550

BOAT
ClassHALF TONDesignerG. MULLBuilderGOUGEONAge date01/1976Series date01/1976Offset fileHOT_FLASH_JT2.offData fileUSA 25500NS
HULL
Length Overall9.601 mMaximum Beam3.112 mDraft1.779 mDisplacement3,725 kgDLR9.3462IMS DivisionPerformanceDynamic Allowance0.240%Age Allowance0.487%
PROPELLER
InstallationShaft exposedTypeFolding 2 bladesDiameter0.320m
CREW
Maximum weight444 kgMinimum weight333 kg * when appliedNon Manual PowerNoCrew Arm Extension0.00 m
SAIL AREAS (m²)
MeasuredRatedMainsail21.6521.99Headsail Luffed35.8635.86Headsail FlyingSymmetricAsymmetric
STORM SAIL AREAS (m²)
Trysail6.29Storm Jib7.50Heavy Weather Jib20.23
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  04560002OQNIssued on 20/06/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Non Spinnaker
2023

Boat

BOOMERANG

USA 25500

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Beat VMG1055.5893.3819.6792.3778.6770.7767.0
52°706.7620.9587.8572.0564.2559.5555.8
60°678.6606.5577.2561.4551.8546.6541.7
75°664.5598.4569.0551.3538.5528.9518.5
90°678.9602.3569.2548.6532.9519.8499.2
110°760.5639.9584.3554.6532.7513.2478.9
120°802.9661.7595.3562.0538.4517.0476.0
135°898.5723.4629.3582.9555.4533.8491.1
150°1054.7822.1695.4620.3579.9554.3514.0
Run VMG1217.9947.8795.1693.3625.1584.6538.5
Selected Courses
Windward / Leeward1136.7920.5807.3742.8701.8677.7652.7
All purpose876.6730.6658.2619.3595.6579.5557.1
Single Number Scoring Options
CourseTime On
Distance		Time On
Time
Windward / Leeward774.00.7752
All purpose639.30.9386
 
Custom scoring options for Australia
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low803.60.7466
Triple Number Coastal/Long Distance Medium635.70.9439
Triple Number Coastal/Long Distance High575.21.0432
Triple Number Windward/Leeward Low1028.60.5833
Triple Number Windward/Leeward Medium768.80.7804
Triple Number Windward/Leeward High674.40.8897
Custom scoring options for Austria
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance693.40.8653
Triple Number Coastal/Long Distance Low803.60.7466
Triple Number Coastal/Long Distance Medium635.70.9439
Triple Number Coastal/Long Distance High575.21.0432
Triple Number Windward/Leeward Low1028.60.5833
Triple Number Windward/Leeward Medium768.80.7804
Triple Number Windward/Leeward High674.40.8897
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1144.8871.1735.0658.1617.2586.4536.2
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7147
Downwind "popa"0.7775
70% up, 30% down "Ilhabela"0.7324
30% up, 70% down "Ilhabela-inverso"0.7575
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low803.60.7466
Triple Number Coastal/Long Distance Medium635.70.9439
Triple Number Coastal/Long Distance High575.21.0432
Triple Number Windward/Leeward Low1028.60.5833
Triple Number Windward/Leeward Medium768.80.7804
Triple Number Windward/Leeward High674.40.8897
Predominantly Upwind675.30.8886
Predominantly Downwind662.50.9057
Custom scoring options for Canada
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low803.60.7466
Triple Number All Purpose Medium635.70.9439
Triple Number All Purpose High575.21.0432
Triple Number Windward/Leeward Low1028.60.5833
Triple Number Windward/Leeward Medium768.80.7804
Triple Number Windward/Leeward High674.40.8897
Predominantly Upwind675.30.8886
Predominantly Downwind662.50.9057
Predominantly Upwind Low856.00.7010
Predominantly Upwind Medium688.10.8720
Predominantly Upwind High654.50.9167
Predominantly Downwind Low915.50.6554
Predominantly Downwind Medium664.90.9024
Predominantly Downwind High556.61.0780
Chicago-Mac Upwind0.8748
Chicago-Mac All Purpose0.8807
Chicago-Mac Downwind0.8895
Bayview-Mac Cove Island0.8293
Bayview-Mac Shore0.8428
Scoring OptionTime On
Distance		Time On
Time
Predominantly Reaching611.90.9806
Predominantly Reaching Low737.40.8137
Predominantly Reaching Medium609.10.9850
Predominantly Reaching High545.61.0997
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1120.00.5357
5-Band Low / Medium943.30.6361
5-Band Medium756.00.7937
5-Band Medium / High683.00.8785
5-Band High657.00.9132
Custom scoring options for Cyprus
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance693.40.8653
Triple Number Coastal/Long Distance Low803.60.7466
Triple Number Coastal/Long Distance Medium635.70.9439
Triple Number Coastal/Long Distance High575.21.0432
Triple Number Windward/Leeward Low1028.60.5833
Triple Number Windward/Leeward Medium768.80.7804
Triple Number Windward/Leeward High674.40.8897
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1144.8871.1735.0658.1617.2586.4536.2
Custom scoring options for Denmark
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance693.40.8653
Triple Number Coastal/Long Distance Low803.60.7466
Triple Number Coastal/Long Distance Medium635.70.9439
Triple Number Coastal/Long Distance High575.21.0432
Triple Number Windward/Leeward Low1028.60.5833
Triple Number Windward/Leeward Medium768.80.7804
Triple Number Windward/Leeward High674.40.8897
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1144.8871.1735.0658.1617.2586.4536.2
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance693.4
Triple Number Coastal/Long Distance Low803.6
Triple Number Coastal/Long Distance Medium635.7
Triple Number Coastal/Long Distance High575.2
Triple Number Windward/Leeward Low1028.6
Triple Number Windward/Leeward Medium768.8
Triple Number Windward/Leeward High674.4
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1144.8871.1735.0658.1617.2586.4536.2
Custom scoring options for Estonia
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance693.40.8653
Triple Number Coastal/Long Distance Low803.60.7466
Triple Number Coastal/Long Distance Medium635.70.9439
Triple Number Coastal/Long Distance High575.21.0432
Triple Number Windward/Leeward Low1028.60.5833
Triple Number Windward/Leeward Medium768.80.7804
Triple Number Windward/Leeward High674.40.8897
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1144.8871.1735.0658.1617.2586.4536.2
Custom scoring options for Finland
Scoring OptionTime On
Distance		Time On
Time
FinRating (Coastal/Long Distance)693.40.8653
Triple Number Coastal/Long Distance Low803.60.7466
Triple Number Coastal/Long Distance Medium635.70.9439
Triple Number Coastal/Long Distance High575.21.0432
Triple Number Windward/Leeward Low1028.60.5833
Triple Number Windward/Leeward Medium768.80.7804
Triple Number Windward/Leeward High674.40.8897
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1144.8871.1735.0658.1617.2586.4536.2
Custom scoring options for France
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low803.60.7466
Triple Number Coastal/Long Distance Medium635.70.9439
Triple Number Coastal/Long Distance High575.21.0432
Triple Number Windward/Leeward Low1028.60.5833
Triple Number Windward/Leeward Medium768.80.7804
Triple Number Windward/Leeward High674.40.8897
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7466
Triple Number Coastal/Long Distance Medium0.9439
Triple Number Coastal/Long Distance High1.0432
Triple Number Windward/Leeward Low0.5833
Triple Number Windward/Leeward Medium0.7804
Triple Number Windward/Leeward High0.8897
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1144.8871.1735.0658.1617.2586.4536.2
Custom scoring options for Greece
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance693.40.8653
Triple Number Coastal/Long Distance Low803.60.7466
Triple Number Coastal/Long Distance Medium635.70.9439
Triple Number Coastal/Long Distance High575.21.0432
Triple Number Windward/Leeward Low1028.60.5833
Triple Number Windward/Leeward Medium768.80.7804
Triple Number Windward/Leeward High674.40.8897
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1144.8871.1735.0658.1617.2586.4536.2
Custom scoring options for Hungary
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low803.60.7466
Triple Number Coastal/Long Distance Medium635.70.9439
Triple Number Coastal/Long Distance High575.21.0432
Triple Number Windward/Leeward Low1028.60.5833
Triple Number Windward/Leeward Medium768.80.7804
Triple Number Windward/Leeward High674.40.8897
Custom scoring options for Israel
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance693.40.8653
Triple Number Coastal/Long Distance Low803.60.7466
Triple Number Coastal/Long Distance Medium635.70.9439
Triple Number Coastal/Long Distance High575.21.0432
Triple Number Windward/Leeward Low1028.60.5833
Triple Number Windward/Leeward Medium768.80.7804
Triple Number Windward/Leeward High674.40.8897
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1144.8871.1735.0658.1617.2586.4536.2
Custom scoring options for Japan
Scoring OptionTime On
Distance		Time On
Time
Triple Number Windward/Leeward Low1028.60.5833
Triple Number Windward/Leeward Medium768.80.7804
Triple Number Windward/Leeward High674.40.8897
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1144.8871.1735.0658.1617.2586.4536.2
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low803.6
Triple Number Coastal/Long Distance Medium635.7
Triple Number Coastal/Long Distance High575.2
Triple Number Windward/Leeward Low1028.6
Triple Number Windward/Leeward Medium768.8
Triple Number Windward/Leeward High674.4
Predominantly Upwind675.3
Predominantly Downwind662.5
Predominantly Reaching630.7
Custom scoring options for Lithuania
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance693.40.8653
Triple Number Coastal/Long Distance Low803.60.7466
Triple Number Coastal/Long Distance Medium635.70.9439
Triple Number Coastal/Long Distance High575.21.0432
Triple Number Windward/Leeward Low1028.60.5833
Triple Number Windward/Leeward Medium768.80.7804
Triple Number Windward/Leeward High674.40.8897
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1144.8871.1735.0658.1617.2586.4536.2
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7466
Triple Number Coastal/Long Distance Medium0.9439
Triple Number Coastal/Long Distance High1.0432
Triple Number Windward/Leeward Low0.5833
Triple Number Windward/Leeward Medium0.7804
Triple Number Windward/Leeward High0.8897
Coastal/Long Distance0.8653
Predominantly Upwind0.8886
Predominantly Downwind0.9057
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.7466
Tretall Distanseseilas Mellomvind0.9439
Tretall Distanseseilas Mye vind1.0432
Tretall Pølsebane Lite vind0.5833
Tretall Pølsebane Mellomvind0.7804
Tretall Pølsebane Mye vind0.8897
Distanseseilas ett tall (OSN 8-16kn)0.8653
Distanseseilas ett tall (APH 6-20kn)0.9386
Enkeltall Motvind0.8886
Enkeltall Medvind0.9057
Custom scoring options for Portugal
Scoring OptionTime On
Distance		Time On
Time
Triple Number Coastal/Long Distance Low803.60.7466
Triple Number Coastal/Long Distance Medium635.70.9439
Triple Number Coastal/Long Distance High575.21.0432
Triple Number Windward/Leeward Low1028.60.5833
Triple Number Windward/Leeward Medium768.80.7804
Triple Number Windward/Leeward High674.40.8897
Coastal/Long Distance693.40.8653
Custom scoring options for Russia
Scoring OptionTime On
Distance		Time On
Time
Predominantly Upwind675.30.8886
Predominantly Downwind662.50.9057
Custom scoring options for South Africa
Scoring OptionTime On
Distance		Time On
Time
Cape Doctor Inshore660.20.9088
Cape Doctor Coastal563.81.0641
Triple Number Coastal/Long Distance Low803.60.7466
Triple Number Coastal/Long Distance Medium635.70.9439
Triple Number Coastal/Long Distance High575.21.0432
Triple Number Windward/Leeward Low1028.60.5833
Triple Number Windward/Leeward Medium768.80.7804
Triple Number Windward/Leeward High674.40.8897
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7466
Triple Number Coastal/Long Distance Medium0.9439
Triple Number Coastal/Long Distance High1.0432
Triple Number Windward/Leeward Low0.5833
Triple Number Windward/Leeward Medium0.7804
Triple Number Windward/Leeward High0.8897
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.7466
Triple Number Coastal/Long Distance Medium0.9439
Triple Number Coastal/Long Distance High1.0432
Triple Number Windward/Leeward Low0.5833
Triple Number Windward/Leeward Medium0.7804
Triple Number Windward/Leeward High0.8897
Custom scoring options for Sweden
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance693.40.8653
Triple Number Coastal/Long Distance Low803.60.7466
Triple Number Coastal/Long Distance Medium635.70.9439
Triple Number Coastal/Long Distance High575.21.0432
Triple Number Windward/Leeward Low1028.60.5833
Triple Number Windward/Leeward Medium768.80.7804
Triple Number Windward/Leeward High674.40.8897
Predominantly Upwind675.30.8886
Predominantly Downwind662.50.9057
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1144.8871.1735.0658.1617.2586.4536.2
Custom scoring options for Ukraine
Scoring OptionTime On
Distance		Time On
Time
Coastal/Long Distance693.40.8653
Triple Number Coastal/Long Distance Low803.60.7466
Triple Number Coastal/Long Distance Medium635.70.9439
Triple Number Coastal/Long Distance High575.21.0432
Triple Number Windward/Leeward Low1028.60.5833
Triple Number Windward/Leeward Medium768.80.7804
Triple Number Windward/Leeward High674.40.8897
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt
Coastal/Long Distance1144.8871.1735.0658.1617.2586.4536.2
Custom scoring options for United States of America
Scoring OptionTime On
Distance		Time On
Time
Triple Number All Purpose Low803.60.7466
Triple Number All Purpose Medium635.70.9439
Triple Number All Purpose High575.21.0432
Triple Number Windward/Leeward Low1028.60.5833
Triple Number Windward/Leeward Medium768.80.7804
Triple Number Windward/Leeward High674.40.8897
Predominantly Upwind675.30.8886
Predominantly Downwind662.50.9057
Predominantly Upwind Low856.00.7010
Predominantly Upwind Medium688.10.8720
Predominantly Upwind High654.50.9167
Predominantly Downwind Low915.50.6554
Predominantly Downwind Medium664.90.9024
Predominantly Downwind High556.61.0780
Chicago-Mac Upwind0.8748
Chicago-Mac All Purpose0.8807
Chicago-Mac Downwind0.8895
Bayview-Mac Cove Island0.8293
Bayview-Mac Shore0.8428
Harvest Moon Regatta567.01.0581
Scoring OptionTime On
Distance		Time On
Time
San Francisco Bay Heavy665.60.9014
San Francisco Bay Medium762.00.7874
Predominantly Reaching611.90.9806
Predominantly Reaching Low737.40.8137
Predominantly Reaching Medium609.10.9850
Predominantly Reaching High545.61.0997
Windward/Leeward 60-40 Low1017.80.5895
Windward/Leeward 60-40 Medium781.70.7676
Windward/Leeward 60-40 High707.30.8483
5-Band
Windward/Leeward		Time On
Distance		Time On
Time
5-Band Low1120.00.5357
5-Band Low / Medium943.30.6361
5-Band Medium756.00.7937
5-Band Medium / High683.00.8785
5-Band High657.00.9132
ORC Ref  04560002OQNIssued on 20/06/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Non Spinnaker
2023

Boat

BOOMERANG

USA 25500

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassHALF TONMeasurementHINPlan reviewHull constructionSolidCarbon RudderNoLight stanchionsNoTrim tabNo
LOA9.601Max. Beam3.112Draft1.779Displacement3,725Wetted area17.61IMS L7.646LSM07.359Acc. length9.763Sink (kg/mm) 12.30
VCGD-0.054VCGM-0.076RM Rated (kg·m) 66.1Limit of positive stability(°) N/AStability IndexN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationShaft exposedTwin screwNoHydro generatorNo
PRD0.320PBW0.000PIPA0.0021
PSD0.025PHD0.040PHL0.062
PSA17.0°ESL0.560
ST10.023ST20.110ST30.110
ST40.048ST50.150
RIG
Forestay tensionAftInner stayAdjustableCarbon mastNoHeadsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoRunners/Checkstays0Spreaders1Rotating mastNo
P10.973IG12.241ISP12.241MDT10.113MDL10.150MDT20.000MDL20.000TL0.000MW0.000GO0.000
E3.271J3.703BAS1.250FSD0.035SFJ0.000SPL3.703WPL0.000TPS0.000BD0.170MWT0.00MCG0.000
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM estimatedFlotation Date04/08/2017MeasurerComment
SFFP0.750FFMFF1.027LCFcl5.090SG1.0250
SAFP8.481FAMFA0.832LCFsh5.324HBI0.930
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible
ORC Ref  04560002OQNIssued on 20/06/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org

Club
Certificate
Non Spinnaker
2023

Boat

BOOMERANG

USA 25500

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateComment00.120.721.252.132.8021.6530/12/1899
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateComment00.000.721.432.854.275.6912.56NoNo 35.8630/12/1899
ORC Ref  04560002OQNIssued on 20/06/2023Valid until 19/02/2024
VPP ver: 2023 1.02 | © ORC | www.orc.org