In a recent article we referred to the Titanic.  You may be interested that it had two sister ships: the Olympic (launched about a year earlier than Titanic) and the Britannic (launched about two years later).  The Olympic was at sea for about 25 years but the Britannic sank four years after Titanic – although to be fair in its case by hitting a mine (or torpedo?).

You will not be surprised to know that the Olympic (by retrofitting) and the Britannic (before launch) were the subject of design changes from their sister ship the Titanic.

P.S. As a final irony, one Violet Jessop lived from 1887 to 1971 and could claim that she had been on board and survived the sinking of both Titanic and Britannic and had also worked on Olympic.