Starfleet 23rd Attack Squadron

The Starfleet 23rd Attack Squadron was a Federation Starfleet fighter squadron extant at least in the early 2230s.

The 23rd was the first unit to carry the Penguin-class fighters; it began training flights off Europa from the carriers USS Barracuda and USS Stingray in November of 2230. (The Starfleet Museum: 23rd-Century Carriers and Fighters)