@Hexcron
This is what I have so far fleet composition for the Pacific around 1941. Sadly I do not have a comprehensive list of the whole US Fleet in 1941. I am still working on this list, but this is what I have so far.
I would highly recommend this site here if you want to get fleet sizes and orders of battle. They have an exhaustive list for several WW2 engagements for various years of the war -
NavWeaps
Navypedia is also a good site if you want to get designs and classes of ships from almost every country in the world.
I can also recommend looking at several posts made by
@S. Marlowski and others from several of the TL-191 threads about naval ships. I can link the relevant threads and posts later.
US Pacific Fleet - Circa 1941
- 6x battleships
- 1x carrier
- 3x heavy cruisers
- 4x light cruisers
- 25x destroyers
Carrier Division: 1x
- Remembrance (Remembrance Class)
Battleship Division 10: 2x
- Ohio (Ohio Class)
- Dakota (Ohio Class)
Battleship Division 14: 2x
- Vermont (Vermont Class)
- Michigan (Vermont Class)
Battleship Division 15: 2x
- Colorado (Colorado Class)
- West Virginia (Colorado Class)
Cruiser Division 13 (CA): 3x
- Freemont (Minneapolis Class)
- Spokane (Minneapolis Class)
- Bellevue (Minneapolis Class)
Cruiser Division 16 (CL): 2x
- Harrisburg (Detroit Class)
- Yonkers (Detroit Class)
Cruiser Division 18 (CL): 2x
- Cheyenne (Manhattan Class)
- Scranton (Manhattan Class)
Destroyer Division 14: 4x
- Townsend (Dewey Class)
- Slater (Perry Class)
- Kane (Perry Class)
- Pyne (Eaton Class)
Destroyer Division 15: 4x
- Richards (Bache Class)
- Tripp (Bache Class)
- Sellstrom (Dewey Class)
- Rannahan (Dewey Class)
Destroyer Division 16: 4x
- Garvin (Perry Class)
- Mackie (Eaton Class)
- Parker (Bache Class)
- Harley (Bache Class)
Destroyer Division 18: 4x
- Gile (Perry Class)
- Seanor (Eaton Class)
- Cronin (Bache Class)
- Martin (Eaton Class)
Destroyer Division 20: 4x
- Lakin (Perry Class)
- Dempster (Bache Class)
- Holton (Eaton Class)
- Freeman (Bache Class)
Destroyer Division 21: 5x
- Lawson (Dewey-Class)
- Marsh (Dewey-Class)
- Vantine (Bache-Class)
- Greene (Bache-Class)
- Ringold (Eaton-Class)