Drawings by ship type:

Aircraft Carrier
Amphibious Warfare
Battlecruiser
Battleship
Corvette
Cruiser
Destroyer
Frigate
Mine Warfare
Naval Auxiliary
Passenger Ship
Patrol Vessel
Submarine
Torpedo Boat

Drawings:

Impero 1942
Impero 1943
Impero 1943-04 study
Intermarine 1994 Minehunter
LAMURS-40
Leonardo da Vinci proposed rebuild
Lupo CODAD
Maestrale AAW variant
MAS da 38 metri con Idrovolante
Minerva alternative design 1
Minerva alternative design 2
New Maestrale
OTO A.S.450
OTO Livorno 23000-t
OTO Livorno 26500-t
P409 Sirio early design
Pattugliatore Polivalente d'Altura
Project 148 Mazzini
Project 168 Doria
Project 168 NUM
Sassaroli
SEC SES 1200
Sparviero
Trieste