Your ARPA has two guard zones.What is the purpose of the inner guard zone().
Your ARPA has been tracking a target and has generated the targets course and speed.The radar did not receive a target echo on its last two scans due to the weather.What should you expect under these circumstances().
ARPA中的主要参数TCPA是表示()
Your ARPA has automatic speed inputs from the log.Due to currents,the log is indicating a faster speed than the speed over the ground.What should you expect under these circumstances().
Which ARPA data should you use in order to determine if a close quarters situation will develop with a target vessel? ()
The ARPA may swap targets when automatically tracking if two targets().
有自动录取功能的ARPA,在手动录取时,按标准规定,至少限取多少个目标(IMO规定)()。
一般来说,ARPA真运动数据的精度()相对运动数据的精度。
在能见度不良时,对备有可使用雷达的船舶,当听到他船的雾号显似在本船的正横以前,下列哪些措施是可取的?() Ⅰ、用雷达确定是否存在碰撞危险; Ⅱ、立即倒车把船停住; Ⅲ、在确定不存在碰撞危险之前将航速减到能维持其航向的最小速度; Ⅳ、立即采取大幅度右转; Ⅴ、使用ARPA显示来船的DCPA和TCPA
在ARPA中的一个主要参数TCPA用来表示()