History
| LOI | |
| Building contract | |
| Building started | |
| 10/9/1980 | Keel laid |
| 17/4/1981 | Launch |
| Sea trial | |
| Second sea trial | |
| 20/4/1982 | Delivered to Baltic Shipping Company, Leningrad, Soviet Union. |
| 1982 | Helsinki – Leningrad route |
| 1988 | Rebuild interior and new bow on Lloyds Werft, Germany |
| 10-12/1990 | Helsinki – Leningrad route and Two nigth cruises from Helsinki to Vyborg. |
| 1992/1993 | Refurbished interior, build new suites. |
| 1993 | Charter to Baltic Line. Helsinki – St. Petersburg route. |
| 6/11/1993 | Helsinki – Las Palmas cruise |
| 1993/1994 | 7 days Cruises on Canary Islands |
| 9-23/4/1994 | Las Palmas – Helsinki cruise |
| 24/4 – 17/5/1994 | Refurbished interior |
| 18/5/1994 | Helsinki – St. Petersburg route and 24 hours cruises from Helsinki around Suursaari |
| 4/11/94- 7/5/1995 | Original plan to cruises on canary Islands , but ms. Baltica replaced Konstantin Simonov for those cruises. |
| 13/4/1995- | Helsinki – St. Petersburg route and Helsinki – Kronstadt cruises |
| Spring 1996 | St. Petersburg – Kiel route |
| 18/5/1996 | Arrested in Kiel due to Baltic Line bankrup |
| 5/11/1996 | Sold to Pakartin Shipping, Cyprus. Named Francesca |
| 11/1996 | Laid up Wilhelmshaven, Germany. |
| 9/2000 | Sold to Silver Cruises Ltd. Malta. |
| 2001 | Rebuild public areas and cabins. Build larger sundecks. |
| 2001 | Cruises from Haifa, operated Mano Cruises |
| 2004 | Refurbished |
| autumn 2009 | Laid up for sale on Haifa. |
| 11/12/2009 | Sold to Kristina Cruises Ltd. Kotka, Finland |
| 29/12/2009 | The Iris start voyage from Haifa to Finland. |
| 16/1/ 2010 | Drydock on Turku Repairing Yard, Naantali |
| 3/2/2010 | Voyage from Naantali to Kotka where works continue. |
| 24/2/2010 | Change flag to Finland , homeport Kotka. |
| spring 2010 | Refurbished interior |
| 24/2/2010 | New name Kristina Katarina, Flag Finland, Homeport Kotka. |
| 28/8/2010 | Kristina Katarina will replace Kristina Regina. |
| 28-29/8/2010 | Maiden voyage Kotka – Tallinn – Helsinki |
| 31/8/2010 | Cruises from FInland to Mediterranean and 7 nigth cruises on Mediterranean |
| 2/10/2010 | Cruises on Black Sea and Mediterranean |
| 6/11/2010 | Cruises on Red Sea |
| 5/2/2011 | Red Sea cruises cancelled and replaced by Eastern Mediterranean cruises. |
| 26/3/2011 | Cruises on Mediterranean and Black Sea |
| 14/5/2011 | Cruises on Azores and from Azores to Baltic |
| 16/6/2011 | Cruises on Baltic Sea, Norwegian coast, Iceland , Greenland. |
| 15/8/2011 | Cruise from Helsinki to Mediterranean |
| 27/8/2011 | Cruises on Mediterranean and Black Sea |
| 16/11/2011 | Canary Islands and Cap Verde cruises |
| 29/12/2011 | Trans Atlantic cruise. First ever on Finnish flagged cruise ship. |
| 12/1/2012 | Eastern Caribbean cruises |
| 8/3/2012 | Trans Atlantic cruise |
| 22/3/2012 | Canary Islands and Cap Verde cruises |
| 7/4/2012 | Mediterranean and Black Sea cruises |
| 19/5/2012 | Cruise from Portugal to Helsinki |
| 6/2012 | Docking on Kotka. |
| 11/6/2012 | Accident when Fast Rescue Boat lowerded for a inspection. |
| 14/6/2012 | Cruises on Baltic Sea, Spitsbergen, Norwegian coast |
| 21/7/2012 | Cruises on North Sea and western Europe |
| 18/8/2012 | Cruises on Mediterranean and Black Sea |
| 27/10/2012 | Cruises on Canary Islands |
| 19/12/2012 | Trans Atlantic cruise from Kap Verde |
| 29/12/2012 | Cruises on Caribbean |
| 2/3/2013 | Trans Atlantic cruise |
| 23/3/2013 | Cruises on Canary Islands and Mediterranean |
| 18/5/2013 | Cruise from Malaga to Helsinki |
| 31/5-18/6/2013 | Drydocking at Naantali |
| 19/6/2013 | Cruises on Baltic, Norwegian coast and Arctic |
| 12/8/2013 | Cruise from Helsinki to Mediterranean |
| 24/8/2013 | Cruises on Mediterranean and Black Sea |
| 7/11/03-27/3/2014 | 7 nigths cruises on Canary Islands |
| 28/11/2013 | Canary Islands cruises cancelled due to economical reasons. |
| 28/11/2013 | Laid up at Las Palmas |
| 8/1/2014 | Sold and delivered to Achieva SF-One Ltd ( FleetPro Ocean Ltd. (ISP) ) |
| 27/3/2014 | Cancelled cruises on Mediterranean |
| 17/5/2014 | Cancelled Cruise from Malaga to Helsinki |
| 6/6/2014 | Cancelled Cruises on Baltic Sea, Spitsbergen, Norwegian coast and Iceland. |
| 7/8/2014 | Cancelled Cruises on Western Europe , North Sea |
| 15/1/2014 | New name Ocean Endeavour. Marshall islands flag. |
| 18/1/2014 | Voyage from Las Palmas to Lerwick |
| 1/2014 | Used as accommodation ship on Lerwick. |
| 20/5/2015 | Rebuild to expeditions ship on Blohm & Voss, Hamburg |
| 14/6/2015 | Mighty Saint Lawrence, New Foundland, Arctic cruises, operated Adventure Canada |
| 20/8-21/9/2015 | Northwest Passage cruises |
| 1/6/2016 | Saint Lawrence, Sable Islands, New Foundland, Arctic, Greenland cruises |
| 26/8-26/9/2016 | Northwest Passage cruises |
| 6/5/2017 | Saint Lawrence, Sable Islands, New Foundland, Arctic cruises |
| 22/8-7/10/2017 | Northwest Passage and Greenland & Labor cruises |