Only partly true...just securing the y-valve is not enough.
And zeehag..."-i was advised by a uscg aux inspector that if i didnt have a zip tie on my cant reach it handle then i am in noncompliance. there is no way short of dismantling my formosa to reach said valve or its handle. i am able to reach the one directing flow to the holding tank. is reachable. but the main thru hull fitting is so far out of reach as to be rendered unusable."
If you're saying that you cannot reach that seacock to close it, you're also saying that you cannot maintain it,and would be unable to put a plug in it if that hose connection should fail and you start taking on water. That not only puts your boat in violation of marine sanitation laws, it endangers your vessel and your crew (which may only be you, but still...). You couldn't pass an insurance survey!
I feel for zeehag. On my boat, while it is certainly possible to operate the through hull valve, there are only a few ways:
1. with my toe.
2. blind, head turned, with only one hand and no practical way to work a wire tie.
3. by removing several hoses first. Then, it's simple!
4. no, a child can't help because the arms are too short
So, I can and do close the valve as needed, and I can and do maintain the system, but to suggest I can reasonably reach and secure the valve; nope, can't be done. None of this is the result of owner mods, it is the way she was built. All of the through hulls are in a single bulkheaded compartment, which is a great safety feature, but it makes things cozy.
She did very well in a resent purchase survey. Also, due to a leaky transducer during our delivery trip in that same compartment I filled the compartment. No troubles, no danger. I supose I could have fixed what was only a slow drip, or I could have kept up by pumping several times each day, but it was January and I was disinclined.
The Y-valve is easy and I lock it. Reguarding the balance, I'm not worrying. It's hard to even see the handle.