Re: "the drone ship Of Course I Still Love You"
The "Gravitas" ship names were a running joke within the Culture. They were the result of another Involved civilisation which complained that such powerful and intellectually advanced beings as the Culture ship-minds should give themselves names with a bit more gravitas in light of their near-godlike powers. At least one Culture shipyard decided to give all its ships names on the "gravitas" theme, such as "Stood Far Back When The Gravitas Was Handed Out" or "Gravitas... Gravitas... No, Don't Help Me, I'll Get It In A Moment" or even "Absolutely No You-No-What". As I recall, Iain had a list of 20 or 30 "Gravitas" names.
"Experiencing A Significant Gravitas Shortfall" appears as a GSV in Look to Windward, and a GCU in Matter, and provided the inspiration for SpaceX's latest drone ship.