Which visa do I need?

I am an Australian citizen and will be on a cruise ship that is travelling from Japan, stopping next at Tianjin port (for Beijing) for a day, then sailing to Shanghai, stopping for a day, then sailing to Hong Kong.
I would like to get off in each Chinese port.
Do I qualify for either the 72 or 144 hour TWOV or do I need to get a Tourist visa?
Thanks
Julie from Sydney