海かい洋よう国こっ家か

Meanings

1

noun

maritime nation

A country whose identity, economy, or security is closely tied to the sea; often used in geopolitical or historical contexts.

house, home, family

島しま国ぐに
島国 emphasizes being an island country, while 海洋国家 focuses on maritime orientation and sea power.
大たい陸りく国こっ家か
大陸国家 is a continental power, often contrasted with 海洋国家 in geopolitical discussions.

Compound of 海洋 (ocean) and 国家 (nation). The term is a modern geopolitical concept, likely calqued from Western 'maritime nation' or 'sea power'.