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| English | German |
| European Blue Flag | Blaue Europaflagge |
| European Blue Flag Campaign | Europäische Kampagne für die blaue Flagge |
| flag of convenience Practice of registering a merchant vessel with a country that has favourable (i.e. less restrictive ) safety requirements, registration fees, etc. | Billigflaggen |
| flag of convenience | Billigflaggen |
| flag swap | "flag swap" |
| red flag warning | höchste Alarmstufe |
| white flag dolphin | Chinesischer Flußdelfin (Lipotes vexillifer) |