Rebuildings
A number of alterations to the original design of the Diana II has been made during the years. Already during her first year of Viking Line service, her decks were heavily polluted by soot from the funnel. The funnel received extended smoke pipes but as the problem persisted, the screen on the rear top of the funnel was removed. After another extension of the smoke pipes, the problem was eventually solved but made the ship's exterior appearance rather odd.
The Diana II's large car deck on deck 4 was during the 1980s deemed to be larger than necessary and of its port side was rebuilt with additional cabins. In preparations of her entry into EstLine service in 1994, the ship received its most extensive modification to date. Apart from the sealing of the bow visor a "duck tail" was added at the stern. Also, the ship's funnel was once again rebuilt to sport a more solid look. The bow remained inaccessible until its complete rebuilding prior to the ships entry into the Tallinn—Helsinki service in 1996.
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