Here's an interesting and very old piece of film showing a working model of a colonial New Zealand Wars gunboat (probably 'Rangariri') that was presumeably a special effect for a movie at the time. https://ngataonga.org.nz/collections/catalogue/catalogue-item?record_id=64248 (https://ngataonga.org.nz/collections/catalogue/catalogue-item?record_id=64248)