Sorry where did you get 14 from..... it is utter crap. Care should be taken on quoting numbers sprouted by others. There are around 70 vessels above 500 gross tonnage certified for international trade are on the Australian register. This is a crappy number but not the 14 commonly quoted.Thirty years ago there were approxiamately 100 hundred ships registered in Australia , now its down to 14 , Foreign registered ships avoid safety and wages that are due to Australian registered vessels ,also transporting goods and services by trucks on the roads can be cheaper but there are arguments that trucking companies dont pay apprproiate compensation for the road usage wear and tear of roads ,strategically it may make sense to develop a Australian martime resource ,but it as always comes down to money and the suspicions of the present government that that such a development would only be to protect merchant unions
As a matter of accuracy there are over 12000 vessels on the Australian register with a large proportion being pleasure craft and fishing vessels. There are a considerable number of commercial trading vessels on the register but most are on the smaller side. As a plus vessels are being replaced with larger tonnage on the Bass Strait trade.
Australia have an International Register that was designed to attract tonnage that was introduced by the ALP. The problem is that the carrots to attract operators were rubbish and did not match comparable registered such as Singapore. As such it is not attractive and not being used.
Australian miners register their tonnage with Singapore on this basis (and base their fleet management there). The unions were an issue and the agreements for some members were excessively generous and makes the cost of operating very high.