That's the model - they are looking for the name. You can call it anything you want. What name do use on VHF? If you can't be bothered thinking of something then something like "Grey Excel" or "Red Inflatable" are fine.
I've used craft insure to insure a few boats over the years. I just put what the boat is in there as it usually doesn't have a name e.g. "Avon Searider 5.4". Failing that you could put the HIN in.