Transporting a destroyer

Probably damaged or having engine issues.

Most likely that's USS Cole after the suicide bomb attack.

Mobile dry dock?

Yes, mobile drydock and transport.

This comment wins xD. Why were you down voted though o_O

Idk. Either haters or people who didn't like that comment

Hmmm. Ewophobia.... O_O

It's more common than it seems

That hull number is 58

So I looked up the hull number and I was wrong too. DDG 58 is the USS Laboon and I didn't find anything in its history that suggested damage extensive enough to warrant a mobile drydock.
https://en.m.wikipedia.org/wiki/USS_Laboon