Specifications

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Eachexhaustopeningorexhaustductmustoriginateinthelowerone-
thirdofthecompartmentEachsupplyopeningorsupplyductandeach
exhaustopeningorductinacompartmentmustbeabovethenormal
accumulationofbilgewater
Apoweredventilationsystemisrequiredforeachcompartmentina
boatthathasapermanentlyinstalledgasolineenginewithacranking
motorforremotestarting
Apoweredventilationsystemconsistsofoneormoreexhaustblowers
Eachintakeductforanexhaustblowermustbeinthelowerone-third
ofthecompartmentandabovethenormalaccumulationofbilgewater
Forboatsbuiltpriorto1980,therewasnorequirementforapowered
ventilationsystem;however,someboatswereequippedwithablower
TheUSCoastGuardVentilationStandard,amanufacturerrequire-
ment,appliestoallboatsbuiltonorafterAugust1,1980Some
buildersbeganmanufacturingboatsincompliancewiththeVentilation
StandardasearlyasAugust1978Ifyourboatwasbuiltonorafter
August1,1978itmighthavebeenequippedwitheither(1)anatural
ventilationsystem,or(2)bothanaturalventilationsystemanda
poweredventilationsystemIfyourboatbearsalabelcontainingthe
words
“ThisboatcomplieswithUSCoastGuardsafetystandards,”
youcanassumethatthedesignofyourboat’sventilationsystemmeets
applicableregulations
Boatsbuiltafter1980withremotestartersarerequiredtodisplaya
labelthatcontainsatleastthefollowinginformation:
Allboatownersareresponsibleforkeepingtheirvessel’sventilation
systemsinoperatingconditionThismeansmakingsureopeningsare
freeofobstructions,ductsandductingarenotblockedortorn,blowers
operateproperly,andworncomponentsarereplacedwithequivalent
marine-typeequipment

Gasolineenginesinstalledinamotorboatormotorvesselafter
April25,1940,exceptoutboardmotors,mustbeequippedwithan
acceptablemeansofbackfireflamecontrolThebackfireflamearres-
tor(BFA)mustbesuitablysecuredtotheairintakewithaflame-tight
connection,andisrequiredtobeeitherUSCoastGuard-approvedor
complywithSAEJ-1928orUL1111standardsandmarkedaccordingly
Otheracceptablemeansofbackfireflamecontrolinclude:airandfuel
inductionsystemsusuallyfoundonpersonalwatercraft,velocitystacks
(attachmentstocarburetors),andreed-type(foundinoutboards)

NavigationRulesrequiresoundsignalstobemadeundercertain
circumstancesMeeting,crossing,andovertakingsituations,described
intheNavigationRulesbeginningwithRule32,areexamplesof
circumstancesinwhichsoundsignalsarerequiredRecreational
vesselsarealsorequiredtousesoundsignalsduringperiodsof
reducedvisibilityandwhileatanchor





Not Equipped with BFA Equipped with BFA



