The security situation in the baltic sea area has worsened following Russia’s overtaking of the Crimea peninsula. Climate change leading to higher temperatures and natural disasters is resulting in more people living exposed around the, which is expected to increase rate of crimes and terrorism at sea. These factors combined makes effectiveness of organizations involved in maritime security of great importance. This thesis aims to examine Sweden and Finland’s maritime security organizations and compare them using Graham Allisons theory on organizational effectivity. Sweden and Finland has acknowledged the worsened security situation in the baltic sea area and formed a cooperative initiative to strengthen the maritime security in the baltic sea, making them suitable objects for analysis in this thesis. Examination of the two countries’ organizations for maritime security concludes that organizational structure for maritime security differs between them. This thesis shows that Finland and Sweden’s organization for maritime security differs on a few points, giving an opportunity for the two countries to learn from each other.