Secret Naval Projects

Post thread
Unbuilt and cancelled ships, subs etc. Designs that never made to production.
Tzoli
    • Like
    • Love
The Development and Modernizations of the Nelson class
Replies
37
Views
25K
Archdude
A
Temeraire
    • Wow
HMS Nelson: Post War Modernisation Plans
2
Replies
65
Views
18K
timjmjmjm
T
Triton
    • Like
CMN Combattante SWAO 53
Replies
12
Views
13K
Odysseus1980
O
B
US Navy Emerlec EX-73 20mm weapon mount
Replies
5
Views
2K
TomS
TomS
R
    • Like
    • Love
Dutch 20th Century designs
Replies
11
Views
4K
Odysseus1980
O
P
    • Like
Vittorio Cuniberti's 1899 all 8" gun cruiser
Replies
1
Views
944
Dilandu
Dilandu
Grey Havoc
TNI-AL SOSUS equivalent?
Replies
2
Views
2K
publiusr
P
Abraham Gubler
    • Like
Helmover giant WWII torpedo
Replies
24
Views
14K
whatismoo
W
Triton
    • Like
JMSDF DDR Destroyer Revolution/13DDX
Replies
17
Views
15K
raptor82
R
O
    • Like
    • Love
Never built Dutch corvette for export
Replies
5
Views
2K
Odysseus1980
O
A Tentative Fleet Plan
    • Like
PD-214 Security Class Maritime Administration conceptual mobilisation ship 1974-1981
Replies
29
Views
8K
Yellow Palace
Y
D
    • Like
IJN Mogami 10" Gun Alternative and Maru-3 10" Gun Super-A Cruiser Project
Replies
5
Views
4K
Tzoli
Tzoli
uk 75
    • Like
RN Type 19 Frigate
Replies
33
Views
22K
uk 75
uk 75
World B4
    • Like
R-31 slbm and associated platforms
Replies
3
Views
2K
Scott Kenny
S
Triton
    • Like
    • Love
    • Wow
Project 1080 (Soviet Union)
Replies
22
Views
22K
World B4
World B4
Triton
    • Like
DCNS FM400 frigate
Replies
10
Views
13K
H_K
H
Charlie 11
    • Like
CVA 3/3
Replies
2
Views
1K
apparition13
A
World B4
    • Like
Sailor Pyotr Koshka submarine
Replies
1
Views
927
Dilandu
Dilandu
P
    • Wow
    • Like
WW1 Admiralty M-N Scheme
Replies
9
Views
2K
PMN1
P
D
Pre Enterprise and Long Beach Nuclear Surface Combatants?
2
Replies
48
Views
17K
Scott Kenny
S
W
    • Like
German WW2 Rettin-M on-carriage radar
Replies
17
Views
10K
gebra
G
Grey Havoc
    • Like
New submarine project for Peruvian Navy (2025)
Replies
0
Views
2K
Grey Havoc
Grey Havoc
F
    • Like
1910 motor battleship project of British ship designer James McKechnie
Replies
8
Views
2K
Grey Havoc
Grey Havoc
P
    • Like
Sir William Sidney Smith's 1804/1805 catamaran landing craft
Replies
5
Views
2K
Martes
M
B
    • Like
The Argentine battleships ARA Chacabuco and ARA Maipü
Replies
11
Views
5K
COLDOWN
COLDOWN
B
Postwar Royal Navy Battleships? (NOT including the Vanguard!)
2 3
Replies
82
Views
58K
Archdude
A
A
    • Like
    • Love
Mid-London Naval Conference USN sketches (1930)
Replies
15
Views
4K
ptdockyard
ptdockyard
Tzoli
    • Like
    • Love
Peruvian Navy Never-Were Designs
Replies
19
Views
9K
Dilandu
Dilandu
JAZZ
    • Like
Heavy Air Landing Seabase Ship
Replies
17
Views
17K
Felocie
F
YourChair
    • Like
USS Iwo Jima (Essex-class carrier) proposed redesign 1945
Replies
5
Views
4K
Archdude
A
colombamike
    • Like
ECOSHIPS : radical french new project for "ecological" warships
Replies
20
Views
15K
H_K
H
I
    • Like
Taiwan Naval Projects
Replies
33
Views
12K
dy031101
dy031101
M
    • Like
Global Combat Ship 2010
Replies
0
Views
1K
Martes
M
Tzoli
    • Like
CVAN-67 the Nuclear Kennedy
Replies
8
Views
5K
Grey Havoc
Grey Havoc
snne
    • Like
Malaysian Naval Acquisitions
Replies
1
Views
2K
Grey Havoc
Grey Havoc
A
    • Like
Mark 13 Torpedo - Nuclear Variant
Replies
3
Views
2K
Grey Havoc
Grey Havoc
overscan (PaulMM)
    • Like
    • Love
Vickers Versatile Aircraft Carrier and 1983 Light Fleet Carrier
Replies
11
Views
16K
Martes
M
P
Type 82 Bristol Class Projects and Design Studies
2 3 4
Replies
123
Views
47K
TinWing
TinWing
Tzoli
    • Like
Austro-Hungarian Navy non-capital ship designs
2
Replies
67
Views
46K
Archdude
A
Tzoli
    • Like
KuK Kriegsmarine Capital Ship Projects
Replies
8
Views
8K
Archdude
A
Triton
"Husky" fifth-generation submarine (Russian Federation)
Replies
22
Views
9K
TinWing
TinWing
JFC Fuller
    • Like
Type 42 Batch 1 Hull Cut
2
Replies
74
Views
30K
XRNWEO
X
M
WW2 German "Ursel" Underwater Rocket
Replies
32
Views
38K
publiusr
P
Anthony Appleyard
Chariots / manned torpedoes
Replies
14
Views
5K
Temistocle
Temistocle
Grey Havoc
    • Like
North Korean 2020 SSN program?
Replies
2
Views
4K
Grey Havoc
Grey Havoc
Grey Havoc
    • Like
Navigation Training Ships (Japan, 2020s)
Replies
0
Views
853
Grey Havoc
Grey Havoc
Triton
    • Like
Royal Navy Future Surface Combatant (FSC) - until late 2004
Replies
13
Views
15K
Grey Havoc
Grey Havoc
Richard N
    • Like
Taiwan's Endeavor Manta Naval Drone
Replies
0
Views
672
Richard N
Richard N
A
    • Like
Japanese Submersible Coastal Gun/Submarine
Replies
14
Views
13K
Grey Havoc
Grey Havoc
hesham
    • Like
Italian Submarine of 1940s ?
Replies
3
Views
2K
hesham
hesham
Pirate Pete
    • Like
New Drydock for Portsmouth Dockyard!?
Replies
10
Views
8K
Nik
Nik
Grey Havoc
‘BLACK SWAN’ Class Sloop-Of-War
2
Replies
44
Views
20K
Scott Kenny
S
archipeppe
    • Like
LPD Al Fulk
Replies
26
Views
7K
tyrin
T
Grey Havoc
    • Like
Advanced Technology Frigate (Great Britain, early 1990s)
Replies
10
Views
3K
RP1
RP1
A Tentative Fleet Plan
    • Like
US Mid-1960s Ocean Reconnaissance Ship
Replies
2
Views
1K
A Tentative Fleet Plan
A Tentative Fleet Plan
JFC Fuller
    • Like
Iowa 3"/50 configuration
Replies
22
Views
13K
Scott Kenny
S
YourChair
Info on Omaha-class cruiser modernizations
Replies
22
Views
10K
BlackBat242
BlackBat242
RyanC
    • Like
    • Wow
N/S Savannah Proposed Conversions
Replies
2
Views
4K
JoeCalPo
J
JFC Fuller
    • Like
BAE/RO 155mm Naval Ordnance
Replies
8
Views
4K
TinWing
TinWing
M
    • Like
    • Love
1950s - 1960s U.S. NAVY FUTURE WEAPONS
Replies
3
Views
3K
moin1900
M
Graham1973
    • Like
Post WWII USN Fleet Submarines
Replies
17
Views
12K
Vepr157
Vepr157
RyanC
    • Like
US Navy Deep Submergence Rescue Vehicle (DSRV) Concepts
Replies
24
Views
12K
Scott Kenny
S
flateric
    • Like
Electric Boat MBI-1
Replies
10
Views
2K
Grey Havoc
Grey Havoc
Antonio
    • Like
Euro Frigates
Replies
29
Views
33K
H_K
H
R
    • Like
La Babel navale
Replies
1
Views
805
Foo Fighter
Foo Fighter
A
BB-72 to BB-78, post-Montana battleships ?
2
Replies
72
Views
48K
Yellow Palace
Y
A
    • Like
    • Wow
Two Peculiar British Designs
Replies
23
Views
10K
DWG
DWG
J
    • Like
    • Wow
  • Redirect
Iran’s carrier project
Replies
–
Views
–
N/A
YourChair
    • Like
Kleber/Marceau and Bayard-class destroyers, and the Vichy destroyer studies
Replies
7
Views
5K
00-PureEvil-00
00-PureEvil-00
Tzoli
    • Like
The Mysterious 1944-45 Gibbs & Cox Battleship
2
Replies
75
Views
25K
Hood
Hood
Triton
    • Like
Sea Arrow fast attack ship (Netherlands)
Replies
1
Views
5K
Grey Havoc
Grey Havoc
World B4
Post-1906 Battleships with Large Calibre Secondary Batteries
Replies
19
Views
6K
Scott Kenny
S
DWG
    • Like
RN 20Kt Fast Oiler, 1945 Programme
Replies
8
Views
3K
EwenS
E
T
Unbuilt WW2 Japanese Ship Projects
Replies
23
Views
46K
warspite
W
A Tentative Fleet Plan
    • Like
Royal Navy 1960s Depot Ship Design for East of Suez
Replies
21
Views
8K
uk 75
uk 75
TinWing
    • Like
Article on the 1950s Design Studies leading to the HMS Fearless LPD class
Replies
8
Views
5K
Kiltonge
Kiltonge
J
Ukrainian vampire boat
Replies
2
Views
967
johnpjones1775
J
XP67_Moonbat
Armstrong Seadrome
Replies
12
Views
12K
DWG
DWG
Tzoli
    • Like
The Cockatoo Heavy Cruiser
Replies
32
Views
24K
Owens Z
Owens Z
A Tentative Fleet Plan
    • Like
Postwar US Auxiliary Preliminary Designs
Replies
2
Views
2K
A Tentative Fleet Plan
A Tentative Fleet Plan
S
    • Like
First Super-Cavitating Ship, GHOST
Replies
38
Views
30K
Grey Havoc
Grey Havoc
shin_getter
Electric Submarines
Replies
31
Views
10K
Iomar
I
V
    • Like
Special transport supplies to isolated japanese garrisons WW2
Replies
7
Views
4K
tom!
T
A
Iowa class designs A and C. What would they've looked like?
Replies
9
Views
4K
Scott Kenny
S
Antonio
    • Like
British Naval projects from late 70's
2
Replies
46
Views
36K
Odysseus1980
O
Y
    • Like
UK 1975 Hydrographic Study Group
Replies
5
Views
2K
Grey Havoc
Grey Havoc
Grey Havoc
Barton Tractor-Sphere (Early 1930s)
Replies
1
Views
3K
Grey Havoc
Grey Havoc
World B4
Project 05430 Rescue Ship
Replies
3
Views
2K
TinWing
TinWing
covert_shores
    • Like
Weird and wonderful (and deadly) contraptions of the LTTE Tamil Sea Tigers
Replies
7
Views
5K
World B4
World B4
R
    • Like
Type 346 radar speculation
Replies
8
Views
11K
stealthflanker
S
P
    • Like
Royal Dockyards (never were but not secret..........)
Replies
25
Views
11K
airman
airman
Pirate Pete
    • Like
Foreign Dockyards and Naval Bases (Unbuilt/Unrealised)
Replies
0
Views
1K
Pirate Pete
Pirate Pete
A
    • Like
CPCX Combined Patrol Corvette USN/USCG proposal
Replies
10
Views
4K
Yellow Palace
Y
D
    • Like
    • Love
    • Wow
Rumsfeld's Alternative Fleet Architecture Design and the Weapon Ship/Combat Systems Ship (X-WPS)
Replies
10
Views
5K
publiusr
P
T
Malakhit design bureau - submarine projects
Replies
7
Views
7K
Vepr157
Vepr157
covert_shores
    • Like
Early submarine designs (rare, unusual, prototypes and evolutionary dead ends)
Replies
26
Views
14K
PMN1
P
Raketyr
    • Like
Hydrofoils pre 1945
Replies
9
Views
4K
papacavy
P
Stargazer
    • Like
General Dynamics SDV > Swimmer Delivery Vehicle (Convair Model 14)
Replies
3
Views
9K
TomS
TomS
Triton
    • Like
    • Love
US Navy Flying-Deck Cruiser (CF) (1930-1931)
Replies
30
Views
21K
Avimimus
Avimimus
kaiserd
    • Like
Chinese aircraft carrier development
Replies
20
Views
9K
PFJN
P
Back
Top Bottom