Launched in 1912 as Dollart for Bugsier Line , Hamburg .
Empire Constancy was a 535 GRT coaster which was built by Stettiner Oderwerke AG , Stettin .
Launched in 1912 as coaster for Bugsier Line , Hamburg .
Empire Constancy was a 535 GRT coaster which was built by Stettiner Oderwerke AG , Stettin .