Why is the ship in body wars called the bravo 229

[TwilightZone]

Here's an interesting question that arose while I was reading the comments to a body wars video. Why is the ship called the bravo 229? Is it significant in any way?

 

[KBLovedDisney]

Bumping this thread.

Looked up some info, I think it was an actual class of submarine. Found this if you're interested:

https://en.wikipedia.org/wiki/Bravo-class_submarine