I always say to myself when thinking of a name for a boat....
'What will the marina think of me if i radio in for fuel/mooring'
'Marina 'xxxx' this is rib Titan Uranus, i require a temporary mooring for a 6m rib'
I also consider what the coastguard may ask me in the case of an emergency.
Mayday Mayday Mayday....this is rib 'I'mhavingamidlifecrisisandwentoutandboughtaribwit haverylongname'
...then they ask me to spell it phonetically.!!
I like short and sweet, but then sometime your are stuck with whatever it comes with..!!
(don't rename IMO...i did it once and had endless problems with that boat.!)