Aiviq headed back to work?

Been wondering why Aiviq has remained tied up at Mac 6 since she returned to Hobart in March. This may be part of the reason she remained so far from home for so long.

Apart from the lay up fees only being AUD $0.171 (plus 10%Tax) (0.116557 USD) per GRT / per day, if I understand correctly. How does this compare to elsewhere, as Hobart is a small port not on a major trade route ?

Both Happy Dragon & Aiviq are back in demand one more for the Southern Ocean summer.

     > "The Australian Antarctic Division (AAD) said the $528 million vessel was in Singapore for scheduled maintenance when hydraulic leaks related to the large couplings connected to the propulsion shafts were discovered."

[New icebreaker RSV Nuyina out of action due to mechanical fault - ABC News]

[Nuyina maintenance shifts plans for Antarctic season – Australian Antarctic Program]

What are the chances the required “Maintenance” was suspected to be more than minor earlier on, but they down played it until now, or is this to be expected after a new build shake down ???