Carnival Corp has offered another $1bn in bonds as part of the cruise major’s 2024 refinancing plan to address about $35bn in debt piled on during the Covid-19 pandemic.

The New York-listed cruise ship giant will sell the convertible senior notes, which mature in 2027, in a private offering.

The new debt will be guaranteed by Carnival’s US and UK umbrella companies, as well as subsidiaries that own or operate vessels, or that control intellectual property, though the debt will not be secured by assets.