Hornbeck Offshore Services's $300m refinancing is a "clear positive" for its stock, but questions remain over the payment of bonds maturing from 2019, Clarksons Platou said.

The US offshore shipowner last week sealed a new credit facility that expires in 2023.

Clarksons Platou said the cash should give it a runway to September 2019, when its $300m unsecured convertible bond matures.