You have to be in visual range, or radar range if you have one, which is the horizon plus a bit more depending how high above sea level your are and how tall your target is.
If you're on a ship, unless you're using an advanced radar that bounces signals against the ionosphere or you have a meteorological phenomena called an inversion which can curve your radar energy over the horizon a little bit, your radar horizon is surprisingly short, something around 12 nautical miles give or take. And the sea is big and Iran is quite far.
This is one big reason why aircraft are used for surveillance at sea. They can go much higher than any ship's radar antenna mast every could be which significantly expands their radar horizon. They can also scan a huge area relatively quickly as they can travel much faster.
Because if this fuck up, Iran now has the intel that the French carrier is approaching without even having to send an aircraft out to look for it. If they even still have the ability to do so at this point.
But what if what your are looking for is AI generated articles that don't provide any trustworthy answers or top 10 lists of products that their manufacturers paid the site to figure on the list? Google is still the best for that.
A very different kind of sci-fi show: Red Dwarf. Specifically Season 3 and up when Kryten becomes a regular character that ties everything together. Although the first 2 seasons are still worth a watch, just not as good.
I don't believe anything The Daily Beast says anymore because they almost always exaggerate on that subject. Their articles are clickbait aimed at all the people who can't wait for Trump to be gone.
I know exactly the video you're taking about and it reminds me of something that I find mind-blowing. Just like crocodilians, sharks haven't evolved much in millions of years. But there can be a seemingly chaotic and fast paced feeding frenzy involving a dozen sharks all competing to grab a bite of something and somehow they don't bite each other. How they manage to tell peer from prey in conditions like that I have no idea.
O'Brien will never be able to escape his life of torment. Even death won't put an end to it.