You have quoted a book of fiction and assumed the quoted portion is not fiction.
In TMO 1.7 to 1.8 beta, the dds can find you if you are close. I have been in position for 15 minutes before the convoy arrives and in silent running mode. Still, the dds have been dancing on my soon to be grave, pounding the sea for 5.
How do you position your boat to keep a low profice on radar, so the dds won't hammer you? Someone send me a PM noting that is what they do, but they filed to respond to my follow-up question on how to do it.