Topic summary
semi-enclave

Extracted from the Wikipedia article Enclave and exclave.
Semi-enclaves and semi-exclaves
Semi-enclaves and semi-exclaves are areas that, except for possessing a sea border that is not surrounded, would otherwise be enclaves or exclaves. Semi-enclaves can exist as independent states that border only one other state, such as Monaco, the Gambia and Brunei. Vinokurov (2007) declares, "Technically, Portugal, Denmark, and Canada also border only one foreign state, but they are not enclosed in the geographical, political, or economic sense. They have vast access to international waters. At the same time, there are states that, although in possession of sea access, are still enclosed by the territories of a foreign state." Therefore, a quantitative principle applies: the land boundary must be longer than the coastline. Thus a state is classified as a sovereign semi-enclave if it borders on just one state, and its land boundary is longer than its sea coastline.