automatic control certified for unattended engine room-open sea
Related Translations:
公海: international waters; high seas; blue water; mare liberum; the open sea 短语和例子在公海上漂流 adrift on the open sea; 公海捕鱼权 common fisherry; 公海法 law of the open sea; 公海渔业 high sea fishery; 公海自由 free