If the Sequoia is deemed a National Historic Landmark, why is it in private hands?
Many buildings both public and residential that have been designated National Historic Landmarks are privately owned...so why not a boat? The owners are allowed to occupy and maintain them, and update plumbing, wiring etc to keep up with changing safety codes, but are enjoined from making any structural changes. Unfortunately, though, the owners aren't REQUIRED to maintain them, so some do turn out to be more than their owners can afford, with the same consequences that apply to any other real estate.
'Twould really be a shame for SEQUIA to die--not only because of her historical significance, but because she's a magnificent example of a Trumpy--one of the finest yachts of her day. She belongs in a maritime museum.