In the Navy we had submarines and targets....
Pete
In our RC submarine group, they still call any surface boats 'targets' rather than tugboat, cruiser, whatever.
And then there is this old favorite:
Ship: Please divert your course 0.5 degrees to the south to avoid a collision.
CND reply: Recommend you divert
your course 15 degrees to the South to avoid a collision.
Ship: This is the Captain of a US Navy Ship. I say again, divert
your course.
CND reply: No. I say again, you divert YOUR course!
Ship: THIS IS THE AIRCRAFT CARRIER USS CORAL SEA*, WE ARE A LARGE WARSHIP OF THE US NAVY. DIVERT YOUR COURSE NOW!!
CND reply: This is a lighthouse. Your call.