Nineteen-ninety saw the realisation of an old vision: Effoa and Johnson Line merged to form EffJohn. As a result, the seal's head logo replaced the colours of each individual owner company on the funnel. In November the new MS "Silja Serenade" made its maiden voyage from Helsinki to Stockholm, approximately seven months after the original planned delivery date. MS "Silja Symphony" was delivered the following year. Although popular and sporting a successful design, the new ships had been very expensive. This expense, coupled with the depression in the early 1990s, forced EffJohn to cut costs, which resulted in Wasa Line and Sally Cruises being merged into Silja Line in 1992. Also in 1992, "Svea" and "Wellamo" were modernised and renamed "Silja Karneval" and "Silja Festival", respectively.