I agree with skunkboat, work up to it. I used to be scared of being offshore. Then I realized I regularly do 30 miles in each direction to get to decent fishing grounds. Yeah, not that far offshore, a mile or two, but I was depending on my boat working for 60 miles and it always has.
I'm going to Fort Bragg this year to chase albacore, like I did in my friend Jens' boat:
http://mcvoy.com/lm/2022-fort-bragg/
we were so far off shore that we were in a different time zone. And it was fine. I've been with him when we went 53 miles down to Point Sur to chase bluefin, the boat was fine. I'll be fine that far out in my boat but that is because I have worked up to it and trust my boat and my experience.
The more you run your boat, the more it works, the more you know how to trust it. And you know when there is a sound that is not normal, yeah, go sort that. If you don't know the sound thing, you are not ready to do a long run. If you do, yeah, you probably are ready.