航行试验大纲.docx
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航行试验大纲
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ISEATRIALOFHULLPART
I-1GENERAL
（1）Allteststobecarriedoutwhenallsystemsandancillarieshavebeencompletedandmooringtestshavebeendone.
（2）Ingeneral,zigzag-maneuvertest,turningcircletest,inertiatest,crashstopaheadtest,vibrationtest,noisemeasurementandwilliamsonturntestshouldbecarriedoutonlyforfirstvessel,andtheabovementionedtestsshouldbeomittedforsecondandsubsequentships（pending）.
I-2TestConditionandPlace
Thevesselistobeballastedtotheballastconditionandfollowingtrialstobeperformed.BeforeProgressiveSpeedTrial,thedrafts（foredraftis7.18m,aftdraftis9.18m（displacementabout80800m3））shouldbeverifiedbytheremotedraftreadingonboard,whichiscalibratedandconfirmedbyownerduringtheIncliningExperiment.
Theprogressivespeedtrialtobecarriedoutincalmsea,withsmallwindforce.IfthewindforceexceedsBeaufortscale3,windandshallowwatercorrectionshouldbeappliedaccordingtoBSRAmethod.
I-3ProgressiveSpeedTrial（SeeTableH-1）
（1）Theprogressivespeedtrialistobecarriedoutunderthefollowingfiveworkingconditions.
SER.NO.
M/EOUTPUT
BHP
M/ESPEED
RUNS
1
50％max.cont.output
8430kW
~76r/min
2
2
75％max.cont.output
12645kW
~86r/min
2
3
85％max.cont.output（NCR）
14331kW
~91r/min
2
4
Max.cont.output（MCR）
16860kW
~95r/min
2
5
2920kW
~49r/min
1
（2）Beforespeedtrialtheloadadjustmentaccordingtoloadingrequirements,draftgaugeandmeasurementofseawaterspecificgravitytobecarriedout.
（3）Thedepthofwaterinseatrialareatobemorethan80m.Exceptcondition5,Eachspeedtrialistoconsistoftwoconsecutiverunsalongandagainstthetideoverthesamecourseandthespeed,mainengineratingandrevolutionshallbeobtainedasthemeanvalueofthetwoconsecutiverunsateachconditionasshowninthefollowingformula:
V=（V1+V2）/2,P=（P1+P2）/2,N=（N1+N2）/2
Speedmeasureistobecarriedout1nauticalmiledistanceforeachrun.Beforearrivingatthespeed-measuringareathevesselshallrunasufficientdistanceofabt.3nauticalmilesinorderthatthemainenginehasrunatstableoutputsbeforethespeedmeasurementcommences.Duringspeedmeasuringwithintestsectioncoursedeviationshallbenotmorethan2degrees,steeringangleshallbenotmorethan±5degrees.
（4）Speed-measuringmethod
ThetrialspeedistobemeasuredbyDGPS.Theoutputshaftpowerandrevolutionofmainenginetobemeasuredbytorsionmeter.Theinstrumentswhichusedinthetestshouldhavethecertificationofverificationbeforespeedtrials.
（5）Measurementrecord
a.Testtimeandwaterdepthofeverytrip.
b.Windvelocityanddirection,weathercondition.
c.Ship’sspeed,revolutions,powerofM/E（rpm）andindicatorhorsepowerofeverytrip.
（6）Ship’sspeedcalculation
Ship’sspeedatdesigndraft（16.5m）tobeobtainedfromthefollowingformula:
VTD=VTB*VMD/VMB
intheformula:
VTD–actualspeedatdesigndraft.
VTB–actualspeedatballastdraft.
VMD–modeltestspeedatdesigndraftin
VMB–modeltestspeedatballastdraft.
I-4InertiaTest,CrashStopAsternTestandCrashStopAheadTest
（1）InertiaTest（OnlyH1008）（SeeTableH-2）
Whenshipisgoingfullaheadatnormalrpm（86.2r/min）,giveanordertostopmainengine.Whenship’sspeedreducestothespeedabt.5knthetestisfinished.Duringthetestthecourseheadingshouldbekeptbychangingtherudderangle.MeasureandrecordthedistanceandtimefromtheorderofstopM/Etotheship’sspeedreduceto5kn.
（2）Crashstopasterntest（SeeTableH-3）
Whenshipisgoingfullaheadatnormalrpm（86.2r/min）,giveanordertomakemainenginerunastern（63r/min）.Whenship’sspeedreducestothespeedabt.0knthetestisfinished.Duringthetestkeeprudderangleat0degree.Measureandrecordthedistanceandtimefromcommandfullasterntotheship’sspeedreduceto0kn.
（3）Crashstopaheadtest（OnlyH1008）（SeeTableH-4）
Whenshipisgoingasternwith63r/minofmainengine,giveanordertomakemainenginerunahead（86.2r/min）.Whenship’sspeedreducestothespeedabt.0kn,thetestisfinished.Duringthetestkeeprudderangleat0degree.Measureandrecordthedistanceandtimefromcommandfullaheadtotheship’sspeedreducetoabout0kn.
I-5TurningCircleTest（OnlyH1008）（SeeTableH-5）
（1）Testmethod
Whenthesteeringgearisintheconditionofdoublepumpworking,thetestshouldbedoneatfullspeed（91r/min）,harborfullspeed（68r/min）andharborhalfspeed（55r/min）respectively:
a.Therudderangleisturnedtohardstarboard（35degree）andhelduntiltheship’sheadinganglechangesto540degree,thetestisfinished.
b.Resumethestraightcourseuntilthespeedrecovery.
c.Therudderangleisturnedtohardportside（35degree）andhelduntiltheship’sheadinganglechangesto540degree,thetestisfinished.
d.Resumethestraightcourseuntilthespeedrecovery.
（2）Measurementrecordthetransferdistance,advancedistance,turningdiameterandmaximumheelingangle.
I-6ZigzagManeuveringTest（SeeTableH-6）
（1）Testmethod
Whenthevesselisrunningahead（91r/min）,thetestistobecarriedoutinaccordancewithfollowingsteps:
a.Therudderangleisturnedfromitszeropositionto10starboardandhelduntilthecourseofthevesselchangestoanangleof10starboardtotheoriginalcourse;
b.Therudderangleisturnedfrom10starboardto10portandhelduntilthecourseofthevesselchangestoanangleof10porttooriginalcourse;
c.Therudderangleisturnedfrom10portto10starboardandhelduntilthecourseofthevesselchangestoanangleof10starboardtooriginalcourse:
d.Therudderangleisturnedfrom10starboardtoitszeropositionandhelduntilthevesselrunsinoriginalcourse.
（2）Measurementrecord
a.M/Erevolution.
b.Initialvesselspeed.
c.Timeofeverystageandcourseangle.
I-7CourseKeepingTest（SeeTableH-7）
Duringseatrail,checkthecoursestability:
（1）Keepthesteeringtillerunchangedwhilethevesselissailingfullahead（91r/min）withsteeringbyhand.RecordthereadingofGYROCOMPASSwiththeintervalof30seconds.Measurementwillbecontinuedfor3minutes,onetimeforfairandcountercurrentrespectively.
（2）Thevesselissailingfullahead（91r/min）andtobeensuredtokeepthecourse.Measurethetimesofsteeringforkeepingthecourseandthemax.Rudderangle.Measurementwillbecontinuedfor3minutes,onetimeforfairandcountercurrentrespectively.
I-8SteeringGearTest（SeeTableH-8）
（1）Mainengineiscontrolledinwheelhouse,andmaneuverhandletobeputinthepositionofaheadandfullspeed（91r/min）.Steeringtesttobedoneinwheelhouse.OperatethehydraulicpumpNo.1orNo.2respectively,dothetestbyputtingtherudderanglefrom0to35starboard/from35starboardto35port/form35portto0/from0to35port/from35portto35starboard/from35starboardto0.Measureship’sheelingangle.Thetimerequiredtoputtherudderfrom35ofonesideto30ofanothersideshallnotexceed28second.
（2）Mainenginetobeputonthestatusofaheadandfullspeed,runningtwohydraulicpumps,testthecapabilityofputtingtherudderfrom0to35starboard/from35starboardto35port/form35portto35starboard/from35starboardto0.
Followingdatatoberecorded
a.Weather,seacondition.
b.Timerequiredforeachmovingrudder.
c.Maximumoilpressureinhydrauliccylinders
d.Maximumcurrentofmotor.
（3）Emergencysteeringgeartest
Totesttheemergencysteeringeffectivenessinsteeringgearroomwithship’srunningathalfspeed（M/Eabt76r/min）butnotlessthan7Kn.
Byturningthepumpcontrolhandlemaketherudderanglechangedfrom0-15starboard-15port-0onetime.Measurethetimeofsteeringfrom15starboardto15port.Itshouldnotexceed60second.
（4）Autopiloteffectivenesstest
Duringthemainengineendurancetest,dothetestwithNo.1&No2steeringsystemrespectively.
--NFU（manual）steering
--HAND（following）steering
--AUTO（automatic）steering
Setupaheadingcourse,navigatewithautopilot,andobservethekeepingcoursecapacitywithcourserecorder.Thendothetestofchangingheadingcourse.
I-9WindlassandAnchoringTest（SeeTableH-9）
（1）Ananchor-groundwithmorethan82.5meterdepthshallbeselectedunderacalmseaconditionandthebowintheupwind.
（2）Eachanchoristobeletgodowngraduallytothesurfaceofthewater.
（3）Fiveshotsofchainsofonesideanchoristobeletgodownfreely.Duringthisprocessmanuallybrake.Checkthereliabilityofthebrakesystem.
（4）Onesideanchoristobehoisted.Duringhoistingprocess,averagespeedofhoistinganchortobemeasuredandrecorded.（bymeasuringNo.2andNo.3shotofchain）,Theaveragespeedisnotlessthan9m/min.Thenhoisttheanchoruptobellmouthwithwindlass.
（5）Anotheranchoristobetestedinthesamewayasabove.
（6）Datatoberecorded
Date&placeoftest,weather,waterdepth,actuallengthofchainunderwater,maximumoilpressureandmaximumworkingcurrentofelectricmotoretc.
（7）Twoanchorstobehoistedatthesametimewithoneshotofchainunderwater.
I-10Structruretest
No.
Item
Frame
Volume
Test
Requirement
Air
Water
1
F.P.T.（C）
299~321
4715.68
*
*
Overflow
2
A.P.T.（C）
-5~14
1303.57
*
*
Overflow
3
No.6Hold（al.）
131~160
22681.5
*
Full
（Remark:
Theitemsthathavenotfinishedinmooringstagewillbecompletedduringseatrail.）
I-11MeasurementofVibration（SeeTableH-10）
MeasuringofvibrationtobecarriedoutduringM/EEndura
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