Designation:F1549−94(Reapproved2011)StandardTerminologyRelatingtoUnderwaterSearch,Rescue,andRecoveryActivities1ThisstandardisissuedunderthefixeddesignationF1549;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thepurposeofthisterminologyistoestablishunifor-mityinterminologyusedinthefieldofunderwatersearch,rescue,andrecovery.1.2Theterminologyisappropriatetothoseunderwatersearch,rescue,orrecoveryactivitiesthatuseself-containedorsurface-suppliedunderwaterbreathingapparatusestoprovideabreathinggassupplyforthesearcher(s).1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.SignificanceandUse2.1Thisterminologyisnotintendedtobeusedasareplacementforpropertrainingandexperienceintheskillsnecessarytoconductanunderwatersearchandrescueopera-tionsafely.3.Terminology3.1ascentrate,n—thespeedofverticalmovementtowardthewater’ssurface.bail-outbottle,n—Adiver-carriedsupplyofairormixedgas(asappropriate)sufficientunderstandardoperatingcondi-tionstoallowthedivertoreachthesurfaceoranothersourceofbreathinggas,ortobereachedbyasafetydiver.bottomtime,n—thetotalelapsedtimemeasuredinminutesfromthetimethatthediverleavesthesurfaceindescenttothetimethatthediverbeginsascent.console,n—aninstrumentpackagethatcontainsoneormoreinstrumentsusedtomonitordepth,bottomtime,surfaceintervals,airpressure,compassdirection,decompressionstatus,orsomecombinationthereof.D.A.N.,n—DiversAlertNetwork.2DCS,n—decompressionsickness,amedicalconditionwithavarietyofsymptomsthatmayresultfromgasorbubblesinthetissuesofdiversafterpressurereduction.decompression,n—thetechniqueusedtoallowthecontrolledremovalofexcessins...
