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| 18/4/1984 | Keel laid |
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| 17/5/1985 | Delivered to SF – Line, Mariehamn , Åland. |
| 18/5/1985 | Helsinki – Stockholm route Viking Line service |
| 4/8/1990 | Fire on engine room. Take out from service to repairing dameges |
| 9/1990 | Back in Helsinki – Stockholm route. |
| 1994 | Refurbished public areas |
| 4-13/5/1998 | Drydocking |
| 24/5 – 6/6/1998 | Turku – Mariehamn – Stockholm route |
| 7/6/1998 | Helsinki – Stockholm route |
| 1/7/1999 | Helsinki – Mariehamn – Stockholm route |
| 9-10/2000 | Build sponsons, refurbished interior on Turku Repair Yard, Naantali |
| 8-17/9/2003 | Drydocking |
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| 29/9/2006 | Refurbished interior. New Market and restaurants. |
| 19/9/2009 | Midlle of nigth black out on Mariella 40 km from Utö. Repairing takes only half hours. |
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| 27/8 – 8/9/2012 | Drydocking. Refurbished interior |
| 12/6-31/8/2014 | Stockholm – Mariehamn – Helsinki – Tallinn route. |
| 27/7/2014 | Thunder storm in Stockholm breaks all moorings of Mariella, which drifts about an hour in Stockholm. Aided by tugs. |
| 1/9/2014 | Helsinki – Mariehamn – Stockholm route |
| 10-22/9/2017 | Drydocking. |
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| 18/3/2020 | Laid up at Helsinki due to travel restrictions caused by the Corona virus. |
| 2/7-9/8/2020 | Helsinki – Tallinn route |
| 25/8/2020 | Drydocking at Öresundsvarvet, Landskrona. |
| 7-11/9/2020 | Turku – Långnäs – Stockholm route |
| 12/9/2020 | Laid up at Mariehamn. |
| 3/5/2021 | Voyage from Mariehamn to Helsinki. Laid up at Helsinki. |
| 12/5/2021 | Sold to Corsica Ferries SAS , Italy. New name will be Mega Regina. Delivery on May 2021. |
| 6/2021 | Corsica Ferries service |
| 21/6/2021 | Delivered to new owner. |
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| 7/4/2023 | Fire on lifeboat. Crew extinquished it in few minutes. |
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