There are many rituals and superstitions around changing the boat name. You'll pick up a lot of info if you simply do a google search, or simply start at John Vigor's Blog: How to Rename Your Boat
, the expert in this matter; but in summary:
- It is generally considered bad luck to choose a name which taunts fortune, such as "Storm King", "wind tamer".
- Remove everything from the boat with the old name on it
- Hold a denaming ceremony
- hold a naming ceremony
Most sailors will say it is bad luck to change the name of a boat; but most will also agree that it is sometimes necessary, and if the correct rituals are followed, you will be okay. (As long as you don't do cheap on the "offering"!)