Royal Navy

The Royal Navy (ロイアル・ネイヴィー) is a magic and a merchant guild situated in Hargeon Town. It is lead by the guild master, Sinbad. It is known as the Guild of the Seas (ギルド・アヴ・ザ・スィーズ) as they primarily deal with specifically in the vastness of the oceans (which they categorised the "Seven Seas".