That's the FBI: the Figthin' Block Island. Not his first ship, but I suspect it's the one he enjoyed the most, because A) he made it back, and B) there was always a picture of itt - this picture - in the laundry room. Wikipedia:

USS Block Island (CVE-106) was a Commencement Bay class escort carrier of the United States Navy. She was the second ship to carry her name, done in honor of the first one, being launched 12 days after the original was sunk.

From 6–9 September, Block Island took part in the evacuation of Allied prisoners of war from Formosa. She continued cruising in the Far East until 14 October, and arrived at San Diego on 11 December 1945. Leaving San Diego on 6 January 1946, she transited the Panama Canal and reached Norfolk on the 20th.

He was part of that evaculation, and went through the canal, too - something he never mentioned until I went there in 2010.

But he didn't talk about the war at all.