Our ship is the USS Galahad, now in it's second incarnation.
First one was an Ulsses-class scout, my own design, basically a smaller Nebula - might post the stats someday (Dedication plaque reads the same as my signature - what a funny coincidence ). Now we are on an Akira-class.
And no, we don't have any letter attached. Just renamed an existing ship, like they did with the Sao Paulo on DS9.
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"To seek, to strive, to find and not to yield" - Alfred Tennyson