1、警备船
... 警报侦检 alarm monitoring 警备船 guard ship 警察巡逻艇 police patrol boat ...
2、巡逻船
... guard sheet 护板 guard ship 巡逻船 guard signal 报警信号 ...
3、警戒舰
...警戒剂 warning agent警戒舰。 guard ship警戒结 sentinel glands ...
4、警戒船
...警戒；警告 warning警戒斑 warning mark警戒船 guard boat; guard ship; guardship ...
coast guard ship海岸护卫船;海岸护卫船海上警卫艇
Revolutionary Guard ship巡逻艇
Canadian coast guard ship加拿大海岸警卫艇
guard against error ship巡逻船