A seaman qualified to be a captain, especially of a merchant ship.
（尤指有资格当商船船长的）资深海员
Example sentencesExamples
Many of them are master mariners who had extensive careers at sea before coming ashore.
The town, famed as the home of master mariner Captain Cook, put out a worldwide appeal for replacement bones in 2000 and its Alaskan twin, Anchorage, came to the rescue after securing a huge pair of bowhead jawbones from Barrow, Alaska.
In 1886 he became a British subject and a master mariner and in 1894, after 20 years at sea, he settled in England and devoted himself to writing.
Among thirty-eight or so individuals with whom he had direct dealings are included a member of the local gentry, merchants, factors, victuallers and master mariners.
After his secondary schooling he initially went to technical college and did civil engineering, but his heart was at sea, so he completed a course to be a master mariner.