An re. what happened on the Boat. (IMHO) I think Wood probably caught Walken & her husband, Robert Wagner, laying some pipe, and she got hysterical.
That is exactly what had broke up Wood & Wagner years before. She reportedly had caught him in the same Act. (Not with Walken at the time.) That story was reported by Wood's own sister. So if anyone was close enough to know...
It caused a divorce. But they remarried years later.
So having lightning strike Twice! You could imagine how that would send her to hysterics. But back to the Boat.
Maybe there was drugs involved (with 2 or all three) idk... But she saw something. she got hysterical (I think). And somehow, she ended up under water. With Walken & Wagner telling no stories.
But the Boat Captain always seemed troubled about it, like he clearly wanted to say more.
btw, that night, their ages were: Wagner(51), Wood(43), Walken(38)