I feel like the cost per rescue number is almost unbounded.
I remember being amazed at the capital tied up in British lifeboats, like this one that launched 5 times last year.
https://www.cromerrnli.org.uk/
I'm sure our coastguard have a *lot* more to do than that, but really, more patrols is better, more overflights is better, more staff is better, more training is better.
It doesn't surprise me that the coastguard are never going to say, we're fine, we have enough resource.