Pomorsko dobro je „obiteljsko srebro“ Republike Hrvatske, i kao stvar izvan prometa, ne može biti predmet vlasničkopravnih odnosa, iskorištava se, odnosno upotrebljava kroz specifične pomorskopravne institute. Prije svega to je koncesija. Hrvatsko zakonodavstvo, cijeneći potrebe razvoja pomorskog dobra, normira druge pomorskopravne institute koji nadopunjavaju one pravne i životne fenomene za koje institut koncesije nije moguće adaptirati. Po noveli Zakona o pomorskom dobru i morskim lukama uveden je institut dozvole na pomorskom dobru. Zakonodavac, svjestan već i prije, kroz institut koncesijskog odobrenja i kroz pojednostavljeni postupak, znatno drugačiji od koncesije, a sada kroz institut dozvole na pomorskom dobru, mora obuhvatiti sva ona korištenja, odnosno upotrebe na pomorskom dobru za koje je institut koncesije neprilagođen. U ovom radu autor prikazuje bitne značajke dozvole na pomorskom dobru kroz analizu normativnog okvira koji uređuje dozvole na pomorskom dobru neposredno ili posredno. Nadalje, ukazuje na razlike između dozvole na pomorskom dobru i ukinutog koncesijskog odobrenja, kao i na potrebe dodatnog pravnog uređenja predmetne materije. Maritime domain is the “family’s silver” of the Republic of Croatia. As it is not part of trading relations, it cannot be the subject of ownership relations. It is exploited and used in a way that is regulated through specific maritime law institutes, primarily via concession. Croatian Legislation, appreciating the needs for the development of maritime domain, regulates other maritime law institutes that complement those legal and life phenomena for which it is not possible to adapt the institute of concession. According to the amendment of the Law on Maritime Domain, seaports have introduced the maritime domain permit institute. The Legislator, aware even previously, through the institute of concession and through simplified procedure, which is significantly different from concession, and now through the institute of permit in maritime domain, which must include all those uses, i.e., uses on the maritime domain for which the concession institute is not suitable. In this paper, the essential features of permit in maritime domain are presented through analysis of the normative framework governing permits in maritime domain either directly or indirectly. Furthermore, the differences between permits in maritime domain and revoked concession approval are pointed out, as is the need for additional legal arrangements.