Scorpio Bulkers has fallen deeper into the red, thanks to a multimillion-dollar loss related to its investment in Scorpio Tankers.

The New York-listed owner posted a $7.4m net loss for the fourth quarter versus a $1.1m deficit a year earlier.

The latest quarter's results were mainly due to a non-cash loss of $7.7m and cash dividend income of $0.5m from Scorpio Bulkers' equity investment in Scorpio Tankers.