That was a helicarrier. I checked- the set designers were told to create something that looked as much like a helicarrier as possible without actually replicating the ones seen in the Avengers and other MCU media. It wasn't dry-docked, though, it was supposed to be partway through the junking process for whatever reason.

Personally, I really very much appreciated Colossus' speech even if Deadpool did think he was droning on. Colossus was right. It's not your whole life that takes dedication to make you a hero. It's the four or five critical moments over the course of a lifetime that shape everything else.