Heard a really good shanty at Orkney Folk festival last year: written and performed by primary school kids in Stromness in association with a group called "Haggerdash". Loads of local history in the verses. It was called "Stromness Harbour" and slightly reminiscent of "South Australia", but a different tune. I cajoled Haggerdash into giving me the words, and have sung it in a few sessions. Should probably ask permission to reproduce it here.
TB