StealthGas, one of the world’s top owners of small LPG vessels, has seen period chartering activity improve recently. However, its management remains wary of any premature celebration.

“We're slightly optimistic but we don’t want to start popping champagne bottles yet. It’s a bit early,” the company’s chief executive Harry Vafias told analysts in a conference call on Thursday.

As it reported its annual results, StealthGas announced concluding new charters for nine ships and extending another one, for durations of between two months and two years.