Death of Azov 3000-tonners

It's is obvious now, that Azov regular 3000-tonners are on the edge of death. It's no use to built 3000-tonners anymore as buliding of 5000 tonner cost just price of 300-400mt steels additionaly to 3000 tonner and 3000-tonners has same freights as 5000+ tonnes do.