According to isizulu.net the translation for the Zulu word "inkunzi" is "bull" or "male animal". In this case I suspect that because of its size and its ability to carry heavy loads, the Inkunzi floating crane was named with the word "bull" in mind.

I first became aware of the Inkunzi when my dad made mention of it about, I guess, 20 or 25 years ago. A that time he was working at the Cape Town harbour, inspecting cranes for mechanical problems. The Inkunzi was (and perhaps is) Cape Town harbour's largest floating crane, with its heaviest load capacity set at around 200 metric tons. (I took this close-up photo of a sign posted on the front of the Inkunzi, indicating the maximum weight that the crane is able to lift to a given height.)

We'll still post a couple more photos taken on my trip to the harbour, but if you're curious to see what I shot, I've already uploaded the photos to an album over here.