Drawings by ship type:

Aircraft Carrier
Airship
Amphibious Warfare
Battlecruiser
Battleship
Cargo Ship
Coastal Defence Vessel
Corvette
Cruiser
Destroyer
Fast Attack Craft
Frigate
Icebreaker
Naval Auxiliary
Passenger Ship
Patrol Vessel
Research Vessel
Sailing Vessel
Spacecraft
Submarine
Yacht

Drawings:

Seahawk CODAG July 1963
Seahawk COGAG March 1963
Shallow Water Submarine
Shuttle-C
Simon Lake Submarine Freight Train
Six-inch Cruiser S-511-19 Study
Space Systems/Loral Aquarius
Spruance 3-engined setup
Spruance AAW conversion scheme
Spruance LWNP-powered variant - no major design change
Spruance LWNP-powered variant - redesigned superstructure
Spruance LWNP-powered variant - redesigned superstructure with Mk 71
Spruance LWNP-powered variant - redesigned superstructure with Mk 71 and Tomahawk
Spruance LWNP-powered variant - redesigned superstructure, AAW conversion
Spruance LWNP-powered variant - redesigned superstructure, modernisation scheme
Spruance modernisation scheme
Spruance Radical Redesign 1979 proposal 1
Spruance Radical Redesign 1979 proposal 2
Thor / Delta unbuilt variants
Tillman Maximum Battleship IV-2 1917 design 1
Tillman Maximum Battleship IV-2 1917 design 2
Transformation Craft (T-Craft)
Treasury preliminary design No. 18
Treasury Wartime Upgrade preliminary design
TSSE Combined Patrol Corvette (USCG)