Analisis efektivitas strategi komunikasi dalam membangun Public Awareness (Studi Kasus: Komunikasi Kampanye Keselamatan Pelayaran Direktorat Jenderal Perhubungan Laut Kementerian Perhubungan) = analysis of effectiveness of communication strategies in building Public Awareness (Case Study: Communications of Maritime Safety Campaign Directorate General of Sea Transportation Ministry of Transportation)