Complex sentence: The coast guard of Germany (German: "Koordinierungsverbund Küstenwache") is an association of several federal agencies, not a single entity like the United States Coast Guard.
Split into simpler sentences: The coast guard of Germany (German: "Koordinierungsverbund Küstenwache") is an association of a number of federal agencies. It is not a single entity, like the coast guards of other countries, for instance the United States Coast Guard.