The visor movements explained above are not easy to understand. Damages, however, do exist which are not explainable – definitely not by the JAIC sequence-of-events – unless one is prepared to accept the only other alternative by which the same or similar movements and damages would have been created, namely the collision with another vessel. This would explain at least the very severe damage at the starboard side of the visor, created by an abrupt upwards movement and subsequent falling back of the visor and all the damages resulting therefrom. Time and again respective assumptions and allegations have come up in the course of the investigation either by survivor statements, e.g. observing a submarine conning tower near the heavily heeled ferry, or by external sources, but nothing concrete could so far be established, because information concerning submarines are classified.

As in many other still mysterious circumstances surrounding the sinking of the ESTONIA it remains for the Governments of Sweden, Estonia and Finland authorities to cast light into these dark areas.