I guess Chevron Oil did just as requested by Condi Rice. Their oil
tanker left port as the "Condoleezza Rice", but returned under a new
name,  the "Altair Voyager". Renaming a ship is a costly process,
modifying it's registration records, etc., but I guess Chevron thought
it was worth it! After all, we could all pay higher prices for Chevron
gas to offset it!

For details of this mysterious renaming of a ship, very uncommon, see
http://multinationalmonitor.org/mm2001/01june/june01names.html