 As an initial solution, the "Bore Star" was chartered to Finnlines for winter seasons 1975-76 and 1976-77 while "Svea Corona" and "Wellamo" served the route as a two-ship operation.During the summer seasons, an unusual schedule allowing two daily departures from each port with three ships was adopted instead of the route's normal one daily departure per port arrangement.On 14 April 1977 there was a bomb threat on board the "Svea Corona", but it turned out to be false.