When did the English High Court of Admiralty gain authority over civil maritime cases?

The English High Court of Admiralty is considered to have been established around 1360, which is the year the admiral was first expressly granted authority over civil maritime cases.1

While the court originally focused on administrative and military matters, such as fleet discipline and cases of piracy or prizes, this 1360 mandate provided the foundation for its civil jurisdiction over mercantile and shipping disputes. By the 15th and 16th centuries, the court had expanded its reach into various commercial areas, though it later faced significant jurisdictional challenges from common-law courts that restricted its scope for a period before its powers were restored and enlarged by statutes in the 19th century.21