Janet Albrechtsen nails it, page-97

Just because you are ready to swallow Colebatch's claims without question, doesn't mean everyone else is, simply put up the proof, and I don't mean a extract from his book or any of his other writings.

If Colebatch has been telling the truth, newspapers at the time would confirm his claims.

The HMS Speaker and POWs were delayed by Warfies industrial action according to Colebatch, but nothing in newspapers at the time.

Below is the link to the National Library of Australia's archives so you can attempt to validate Colebatch's claims.

Good luck, you are going to need it.

http://trove.nla.gov.au/


Below are some of the articles about the POWs and HMS Speaker, but no mention of the Warfies delaying them.