1987 was a very eventful year for Silja. Effoa had purchased the famously fast the previous year and from the beginning of 1987 the prestigious but unprofitable "Queen of the Baltic Sea" joined Silja Line's fleet. Later in the same year Effoa and Johnson Line jointly purchased Rederi Ab Sally, one of the owners of their rival Viking Line. The other Viking Line partners forced the new owners to sell their share in Viking, but Effoa and Johnson Line retained Vaasanlaivat / Vasabåtarna, Sally Cruises, Sally Ferries UK and Commodore Cruise Line. Although the purchase of Sally had no effect on Silja Line's traffic for the time being, it proved to be important later. Finally 1987 saw another order of new ships for the Helsinki–Stockholm route, which would again be the largest ferries ever built, eventually named and . Not revealed at the time, the new ships had a 140-meter promenade-street running along the center of the ship, a feature never seen before in a ship, but by the first decade of the 21st century commonly found on Royal Caribbean International's and Color Line's newer ships.