Planning a LONG event in new body of water
I'm at the very beginning stages of planning a long personal event across a body of water that I don't think anyone has crossed before. I've gotten sample safety plans, attempted to contact various people in the US Coast Guard, Harbor Patrol/Police, and Marine Police, trying to find out whether I need special permission for the swim. I've even chatted with a Naval Officer to get a better understanding of shipping behavior in shipping lanes, as one possible route crosses a shipping lane twice (out and back) and another route would cross it once (point to point).
So far, no dice on a definitive answer about whether I need permissions.
Navy officer suggested that I find a different planned landing site, and avoid the shipping lane altogether, "unnecessary complication and risk".
I'm also planning on visiting the "officials" (if I can find them) in person, so as to avoid getting put on perpetual hold on the phone.
But, how do you know whether or not you actually need permission to cross a body of water? I know that some locales just need notification of swimmers in the water for safety purposes. Others you need permission.
If, after much inquiries, I still have no definitive answer.....rather, an answer that's "we don't have any idea about anything about that" (the answers I've gotten so far)..... at what point do I "press on" and just do my planning but make sure that a strong safety/comms plan is in place?
Is it really true that forgiveness is easier to obtain than permission?
I'm much more concerned that I find a place that's public to land, or get permission from any private property. My launch point is public land, so that's reasonably set.