Keep in mind that the author of the OP is upset that this thread was moved to the Conspiracy Theory board, and does not believe the claims she's sold her soul to are fanciful in any way.
This entire CT is insulting to me. First, as a layman the cause of the sinking seems straight forward. The ship was sailing in an environment it was never designed to operate, under conditions which would be challenging for most oceangoing vessels of her size. Not one of the conspiratorial claims hold water (pun intended). There are dozens of hours of dive footage from the initial investigation that anyone bored enough(like me) can view, and the bow shows no evidence of explosives, the bow visor shows no evidence of explosives, but the hull forward of the bow's superstructure is rippled as a result of the banging it took from the visor before it detached.
As a reformed CTist myself, I find the claims advanced in this thread, for lack of a better word, asinine. So many real-world basic elements must be ignored just to entertain them. There is no thought put into any of the claims, the result is each one dissolves like wet toilet paper. A quality CT works within the facts to use them as a framework for whatever BS the proponent wants to advance. IMO, the only CT that might work for a while would be a desperate captain taking out a large life insurance policy to help his family overcome hardship, so he drives the ship hard knowing full well it will likely sink.This silly theory works within the facts of the case without submarines, Spetsnaz, or radioactive materials. But it falls apart with a simple record's check on the insurance policy.
I understand why some of the families need this to be a conspiracy. The idea of simple negligence killing over 800 people is hard to stomach. And ferry transit is a staple for European travel, so the idea that the ship you and your family just sailed on might have been a death-trap could be too much for some. Of course there are people who feed upon misery and disaster to spread misinformation to advance their world-view. In this thread we've all been subjected to extremely weak claims of black-ops, spies, and high-level cover-ups with no consistent line of thinking. Most of us know, and accept that multiple things can be true at the same time, yet have nothing to do with each other, or the central incident.
A cold-case detective spoke about why he loves to interview killers. He gets the full story about the off-the-wall pieces of evidence from the crime scenes. He learns why and how shoes ended up where they were found, why doors/windows were locked, or left open. Much of the time those answers had nothing to do with the crime; people leave doors and windows open at night, the victim wasn't wearing shoes at the time of the murder. This leaves the detective with nothing but off-the-wall features of the crime scene that had to be recorded, and investigated for a time. The result is more focused attention paid in the next investigation where the detective doesn't waste time on the periferal things.
The sinking of MS Estonia is just one of those things. An accident that could have been avoided had the shipping company had integrity.