The paper illustrates a proposition for process model of the P&I maritime insurance sale. A specific feature of such a form of insurance relates to the collaboration between an insurance company and P&I clubs, which insure shipping company liability. The paper shows a decomposition diagram of the process of P&I insurance sales, from the aspect of the insurance company. The process of insurance sale is described. For process specification, the following methods are used: Work Flow, Activity Flow and Data Flow Diagram. The first two methods clearly show the position of processes in organizational parts of the insurance company and external business organizations. The Data Flow Diagram shows processes and data flows between them, not depending on where these are performed or who performs them. Such a model is the basis for information system development. U ovom radu prikazan je prijedlog modela procesa prodaje P&I pomorskog osiguranja. Specifičnost ovakvog oblika osiguranja odnosi se na suradnju osiguravajućeg društva s „P&I klubovima“ koji osiguravaju odgovornost brodara. Prikazan je dijagram dekompozicije procesa prodaje P&I osiguranja s aspekta osiguravajućeg društva. Opisan je proces prodaje osiguranja. Za specifikaciju procesa su korištene metode: Work flow, Activity flow i Data flow dijagram. U prve dvije metode vidljivi su smještaj procesa po organizacijskim dijelovima osiguravajućeg društva i vanjskih poslovnih organizacija. Na dijagramu toka podataka prikazani su procesi i tokovi podataka među njima neovisno o tome gdje se i tko ih izvodi. Ovakav model je osnova za izgradnju informacijskog sustava.