1st Mediterranean Fleet (HQ: Livorno)
- Flagship: Trieste class EUS Trieste
- Trieste class aircraft carrier × 4
- Divine class heavy cruiser × 6
- Salerno class light cruiser × 10
- Type 1919 destroyer × 60
2nd Mediterranean Fleet (HQ: Valletta)
1st Baltic Fleet (HQ: Riga)
- Flagship: Trieste class EUS Riga
- Trieste class aircraft carrier × 4
- Divine class heavy cruiser × 6
- Salerno class light cruiser × 10
- Type 1919 destroyer × 60
2nd Baltic Fleet (HQ: Stettin)
1st Far East Fleet (HQ: Naha)
- Flagship: Trieste class EUS Athens
- Trieste class aircraft carrier × 4
- Divine class heavy cruiser × 6
- Salerno class light cruiser × 10
- Type 1919 destroyer × 60
1st Submarine Fleet (HQ: Livorno)
- Palermo class submarine × 50
2nd Submarine Fleet (HQ: Riga)
- Palermo class submarine × 50
3rd Submarine Fleet (HQ: Maspalomas)
- Palermo class submarine × 50
4th Submarine Fleet (HQ: Valletta)
- Palermo class submarine × 50
5th Submarine Fleet (HQ: Naha)
- Palermo class submarine × 50
6th Submarine Fleet (HQ: Palermo)
- Palermo class submarine × 50
