Mine is a rough combination of the Maori / Pacific names for water and rat. Though recently I have found a stream up north with this name. It is appropriate as I am often to be found mucking round on boats (of all sizes) and have named a couple of my maritime more whimsical creations this also.
Cheers Murray
My 24' sailing boat is called "Aroona" and aboriginal word which means "running water". I have been unable to find out which language group it comes from (Australia had about 250 different languages in about 13 language groups) and it can be found in place names in several parts of Australia.