Mystery Logo from Duluth Shirt

Looks like Duluth YMCA?

While it doesn't look like a YMCA logo in general, I can see how the right side can be flipped upside down to kind of look like part of the current Y logo and maybe get one thinking about it.

Piggy backing off the first two comments. All the shapes look like an anagram for YMCA.
  

*Or maybe it’s called an Ambigram? Some sort of word picture.

Personally, I think it looks more like a logo for the famous Duluth partnership of KOAVH -- Kampgrounds of America and Van Halen.

It looks like it contains the letters DAVTI for Vo-Tech as it was referred to at one time. Someone outlined the letters and it occurred that that is what is spelled out.

Or should I say only AVTI and Duluth is the location.

I think Duluth Area Vocational Technical Institute is the best guess so far. That's the name of what is now called Lake Superior College.

I have a hard time finding anything in that logo that resembles a T, but I still think it's likely to be correct.

Here's a rundown of Lake Superior College names throughout its history:

Salter School, 1946 to '68
Duluth Area Institute of Technology, 1968 to '72
Duluth Area Vocational Technical Institute, 1972 to '87
Duluth Technical Institute, 1987 to '89
Duluth Community College Center, 1989 to '95
Lake Superior College, 1995 to present

More on the history of the college at lsc.edu.

I thought it was the logo for some Jim Richardson aquatic project. Join the NAVYi.