Avance Gas needs to up the stakes if it is to stand any chance of turning its public courting of Dorian LPG into a lasting relationship, sources believe.

Avance president Christian Andersen laid his intentions on the line last week, telling an audience at Marine Money Week a second offer would be in place by the end of the month.

While Andersen has been chasing Dorian for several months, the timing caught many industry observers off guard since few expected to see another takeover until late 2014 or early 2015.

John