On some vessels I have seen it required that whenever crew go up on the monkey island that the radars are to be switched off and isolated. On other vessels this hasn’t been a requirement and crew go up and work there with the radars still switched on.
The reason given for requiring the isolation is that there is a long term risk of radiation affecting the health of people working up there, and not that the radar might hit them, as radars are always well up the mast out the way.
Is this a thing that most companies require you to do?
You strip naked, sit on top of it, tape your balls to the transmitting side of the array and spin around for 30-45 minutes. Of course I have NOT had anyone do this yet.
Other than that, unless u r on the same plane as the radar, I would not worry about it. I tell this to my crews and let them make a decision. It is not that big a deal to me one way or the other. Whatever makes them feel safe.
Most ship do prefer that the assist boats turn of the radar. I have had issues on containerships on turning the radar on before sailing. In some ports the stevedores do not want the radar on as they are about the same level of the radar. I have had words over if the radar is not on we will not leave the dock until it is on and adjusted.