It says Russian hardware was being smuggled out of Estonia to Sweden, and The Estonia was one of the ships used.
Exactly. There was nothing special about the Estonia in this respect. In fact, if one was in the business of smuggling arms out of the former Soviet Union to an unaligned neighbour, this was one of the few logical and feasible ways to do it.
The real question goes back to the good old "
cui bono?" angle. First off, we can state with certainty (and it's been stated and explained in this thread more than once already) that neither the Swedish nor Estonian States would have had any reason whatsoever to want/need aging & inferior USSR-era military equipment/ordnance for their own ends or purposes (nor for the purposes of any of its western allies).
Therefore, the only feasible thing that was going on here was that the Russian gear was being smuggled out of Estonia for the purposes of being sold (or, less plausibly, given away for ideological reasons) to terrorist organisations.
And that being the case, one must then try to figure out who the actors and beneficiaries in this trade were most likely to have been. For the sake of argument, let's suppose that the end-recipients of the gear were the IRA. In that case, what possible motivation could either the Estonian or Swedish States have for supplying/brokering illicit arms to this sort of paramilitary terrorist organisation? (The correct answer is "none"). What's far more likely - to the point of being a near-certainty - is that what was going on here was that rogue actors who had access to this Soviet-era gear were transporting said gear to (eg) the IRA in return for (metaphorical or literal) briefcases full of paper money.
And if
that is the case, then the last matter to address is that of who these rogue operatives were most likely to have been. Now, even though Estonia seceded from Russia in 1991, large numbers of Russian troops and materiel remained in Estonia right up until - not-coincidentally - 1994 (though of course the Russians repatriated their Estonia-based nuclear arms very quickly after Estonian independence)
It's therefore perhaps not altogether difficult to theorise that the people in Estonia between 1991-1994 with a) the most (& the easiest) access to the Soviet military hardware that was still located within Estonia, b) the most need for western-denominated hard currency, and c) the fewest scruples about passing arms to terrorist organisations, were...... the Russian soldiers who'd remained in Estonia, and who were in charge of these very arms.
What's more, I suggest that any Russian intelligence officer worthy of the name (and the Russians of this era were rather good at this sort of state intelligence....) must surely have come to the same conclusion: ie that it was Russian troops remaining within Estonia who were clearly the most likely culprit(s) for smuggling out arms and selling them on to terrorist groups. Which - obviously - would render ridiculous the very idea of the Russian State ramming/torpedoing/blowing up/otherwise sabotaging a vessel such as the Estonia.
On top of plenty else, why would Russia have risked a major diplomatic/geopolitical incident (with all the ramifications that this implies), when all it would have had to do - assuming it even
wanted to expose and shut down this illegal trade in any case - would have been to 1) identify which troop(s) was/were behind the trades, then 2) quietly "repatriate" the guilty party/parties to St Petersburg/Moscow (then send them a good way further east to a Siberian gulag....)?
The report also says that the commission doing the investigation questions if the Estonia had actually passed all of her inspections, and was in fact seaworthy on the night of the sinking.
It wouldn't be at all surprising to me if in the years between 1991 and 1994 the relevant regulatory/standards body in Estonia which was responsible for assessing the seaworthiness of Estonian-flagged vessels..... had been either lax, incompetent or corrupt. And that this had resulted in the Estonia being improperly declared seaworthy.