I wouldn’t defer to me on matters maritime, the closest I get to the sea is looking at the breakers from the deckchair on my porch, muttering “big waves today” as I shuffle over to the fridge to get another beer.
There are plenty of local fishermen who will take you out into the strait to visit Krakatoa volcano or look at the site of one of the wrecks (the Dutch ship Evertsen which beached on an island in the middle of the Sunda Strait), but, well you know, it’s Indonesia, transportation safety isn’t a priority so I kinda never got around to it.