Built in 1973 at the Leningradskiy Petrozavad, Leningrad with a gross register tonnage 183 tons and as dimensions 29,32 x 8,49 x 3,02 metres. Het 2x2 6 cylinder Russkiy engines supplied 1.200 ahp. She was property of the Bagger-, Bugsier- und Bergungsreederei, Rostock, since 1990 as the Bison from the Brugse Scheepssloperij, Brugge, Belgium, since 1993 as the Aquarius A from Martin Davis (Honduras-flagged, San Lorenzo), since 1994 as the Aquarius A from the West Coast Towing Company in Swansea, since 1994 as the Megan Mai from the West Coast Towing Company, Cardiff. Since 1 January 1996 the Ecuador-flagged Guayas. IMO 750851 and call sign HC3088 in 2005 still mentioned.
