

The company website’s logo is dark blue. M499’s funnel derives from a photograph of Herkules taken on 22 January 2006.
Tug Mercur’s May 2004 port-side photograph was initially taken to show a new Wiréns emblem. Rosanoski subsequently identifies it as Marine Carrier’s logo, revising his earlier interpretation in January 2009. The vessel’s owner Porto Shipping was later listed as a Marine Carrier subsidiary, though the formation chronology is inconsistent. A 9 January 2009 starboard photograph shows the emblem mirrored so that it points forward on both sides.
Marine Carrier traces its roots to about 1900. Lloyd’s gives formation in 2005, while Rosanoski considers about 1989 more likely from the tugboatlars account; the register’s later date of 1900 is understood to refer to Wiréns’ origins. Thomas Wirén is listed as chairman, although the 2008 register does not explicitly connect the two companies. Marine Crane, formed in 2004, was an operating concern at the same address.
Sweden, Pitea.