Hi
I was interested to read definitions qualifying for this column. While Mats puts forward a version, it does not fit the title of this thread "laid up ships" - which I understand are de-activated vessels without crews and having technical modifications such as dehumidifying spaces occurring, and moored at a permanent berth.
The current phenomenon actually involves few truly laid-up vessels, most are in :hot lay-up" meaning still crewed and readiness maintained for prompt return to trade. Some ships are just idle for a round voyage, but to me fit the criteria of this column as affected by the downturn and withdrawn from trade for a period.
Ships idle for less than a month may well then qualify for this column, as long as resulting from lack of cargo, but not as a result of mechanical issues or awaiting orders as already mentioned.
Cheers
Brent