navigational route type

例句：

1. 1.The navigational route type is crucial forthe safe operation of the ship.
   导航路线类型对于船舶的安全运行至关重要。
2. 2. The navigational route type was designed to optimize thejourney's efficiency.
   导航路线类型被设计来优化旅程的效率。
3. 3. Thenavigational route type isessential for ensuring the safety ofthe passengers.
   导航路线类型对于确保乘客的安全至关重要。