Latvia is a maritime nation although most of its inhabitants are unaware of the importance of maritime activities to the economy. For policy makers and also for stakeholders of the maritime clusters it is important to understand which factors contribute for the sustainable development of the companies in the cluster. Therefore the aim of this paper is to analyse the economical value, which gives the possibility to assess the importance of maritime resources for country. On the basis of this analysis, the authors conclude an integrated approach should be applied which is based on knowledge about the economical importance of the maritime sectors, their economical links and their strategic tradeoffs for future development.