Prior to the era of electricity, without light, the harbour was unable to operate at night. As steam powered cranes were available from the mid-1800s, these were installed during 1881 on the North Jetty. In due course, these would be replaced with hydraulic and later electrically powered cranes.

From an openness and disclosure viewpoint, I hereby state that all the technical details have been supplied by the Technical Editor, my brother Blaine. This does not imply nepotism as he provides his assistance purely on a pro bono basis.

Main picture: Steam powered cranes on North Jetty

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