Avance Gas is wary of converting its existing VLGC fleet to run on LPG due to cost and efficiency concerns.

The John Fredriksen-backed shipowner has two new 91,000-cbm dual-fuel VLGCs on order at DSME in South Korea for delivery in 2021 and 2022.

But asked by analysts on a conference call whether the company would consider retrofits, chief commercial officer Ben Martin was cautious.