Maritime　carbon　responsibility　allocation　can　guide　sea　level　rise　and　storm　surge　mitigation　in　BRICS　coastal　zones　by　addressing　emissions-driven　climate　risks.　This　study　analyzes　the　characteristics　of　and　differences　in　embodied　carbon　emissions　in　the　Maritime　Transport　Industry　of　the　BRICS　countries　from　the　perspectives　of　producer　responsibility,　consumer　responsibility,　and　shared　responsibility,　based　on　a　global　value　chain　framework.　Using　non-competitive　input-output　data　from　the　OECD　and　introducing　a　processing　trade　adjustment　mechanism,　the　study　calculates　the　carbon　emissions　of　the　five　countries　from　1995　to　2018.　The　empirical　results　show　that　under　producer　responsibility,　carbon　emissions　in　China　and　South　Africa＇s　maritime　transport　sectors　are　mainly　driven　by　exports,　with　production-side　emissions　significantly　higher　than　consumption-side　emissions.　Under　consumer　responsibility,　emissions　in　India　and　Brazil　are　driven　by　the　demand　for　imported　goods,　reflecting　their　high　reliance　on　external　markets.　In　shared　responsibility　accounting,　China＇s　cumulative　carbon　emissions　account　for　66.81%　of　the　total　emissions　from　the　five　countries,　highlighting　its　central　role　in　global　supply　chains.　The　study　also　finds　that　the　differences　in　carbon　emissions　among　the　countries　are　mainly　due　to　differences　in　economic　structures,　trade　dependencies,　and　consumption　patterns.　Different　responsibility　accounting　methods　have　a　significant　impact　on　carbon　emissions,　with　export-oriented　countries　tending　to　weaken　producer　responsibility,　while　import-oriented　countries　seek　to　avoid　consumer　responsibility.　The　shared　responsibility　mechanism,　through　the　dynamic　allocation　coefficient　alpha,　provides　a　practical　approach　to　balancing　efficiency　and　equity　in　global　carbon　governance.