Marine resources -- Military relations -- 2 Oceanography -- 2 Sea-power -- 2 Archipelagoes -- 1 Congresses 1 Congresses -- 1 more ... Economic aspects 1 Foreign economic relations -- 1 Law of the sea -- 1 Marine biology -- 1 Marine resources conservation 1 Marine resources development 1 Ocean energy resources -- 1 Ocean engineering -- 1 Research -- 1 Security measures -- 1 Shipping -- 1 Strategic aspects 1 Strategic aspects -- 1 Territorial waters -- 1 less ...