Unilateral declarations of independence by extra-territorial bases

Extra-jurisdictional territories
Off-shore broadcasting vessels
Vessels can anchor outside the territorial limit in order to broadcast into a country without being constrained by national regulations or taxation. Abandoned installations (such as oil platforms or anti-aircraft platforms) constructed on the coastal shelf outside territorial limits may be taken over by individuals and groups and then declared independent of the country which originally built them.
(F) Fuzzy exceptional problems