35. pay much attention to fishing boat ahead , navaids work in normal condition.
注意前面渔船。助航仪器工作状况正常。
英语百科
Navigational aid
(重定向自Navaids)
A navigational aid (also known as aid to navigation,ATON, or navaid) is any sort of marker which aids the traveler in navigation; the term is most commonly used to refer to nautical or aviation travel. Common types of such aids include lighthouses, buoys, fog signals, and day beacons.