名词
中文翻译：船用导航许可证
同义词：
["navigator's license", "pilot's license", 'pilotage license']
例句：
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1. To operate a ship, one must have a valid ship navigation license.
要操作一艘船只，必须持有有效的船用导航许可证。
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2. The captain needs to obtain a ship navigation license before he can take command of the vessel.
船长在接管船只之前需要获得船用导航许可证。
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3.The new regulations require all pilots to hold a ship navigation license.
新的法规要求所有飞行员都持有船用导航许可证。