Warning: VERY long post ahead !
First of all, this is just a speculation thread, I don't want to take part into any polemic or discussion about their place in the game or balance problem etc…. I'm just doing this for fun, to share what could be the possible sub trees for the remaining factions.
Now about my criteria, apparently WG only went for ships from the late 20's to the end of the war so I won't be including any post war subs/designs, and it makes sens since submarine tactics drastically change after WWII. I also mostly selected ocean-going submarines since it's the class wargaming decided to go for with the russian, american and german lines. I also tried to make each line as homogeneous as possible, with a logical continuation between each tier. I included a drawing for each subs in a link so you can get an idea about their look.
So without any further ado, here are the trees I came up with: starting with the japanese sub lines:
During WWII, the japanese navy had a huge amount of different submarine classes. Even more than the germans. Their submarine fleet was extremely diversified and I figured it would be pretty easy to make at least 3 different trees with each of them providing a unique playstyle. And that's exactly what I did.
So let's start with the classic ocean going submarine line: their torpedo armament remains relatively poor, however they compensate with a very high speed for the later tier (sorry french subs, but it seems the japanese already took the cake in this case) and strong displacements.
1)Ocean-going submarine tree
Kaidai IV (1929)
- displacement :1,600 t
- armament: 6 × 533 mm TTs(4 × bow, 2 × aft), 1x 120mm naval gun
- speed 20knots(surfaced)/8.5knots(submerged)
A simple design, very heavy for the tier, the torpedo armament is on par with other same tier ships and won't change much within the tree.
Kaidai VIa (1934)
- displacement : 1422 t
- armament: 6 × 533 mm TTs(4 × bow, 2 × aft), 1x 100mm naval gun
- speed 23knots/8.2knots
A very successful class. A bit lighter than the kaidai IV but also faster, in fact it had the highest surface speed among japanese subs. Torpedo armament remains the same, with the notable exception of the deck gun, being 100mm instead of 120.
- displacement : 1300t
- armament: 4 × 533 mm TTs(4 × bow)
- speed: 15.8knots/20knots
A very advanced submarine. It had the highest underwater speed of any oceanic submarine(20knots), for the price of having a limited armament and a smaller displacement than the kaidai 4 and 6. An interesting ship.
2)Submarine cruiser tree
If you thought that the first line had relatively heavy subs, wait for this one: the submarine "cruiser" line. Which is what I believe the most probable line for the game. They are very chunky and will probably have the highest amount of hp of all subs ingame.
Junsen I (1926)
- displacement : 2,000 tons
- armament: 6 × 533mm torpedo tubes (4 × bow, 2 × aft), 2x140mm naval gun
- speed: 18knots/8.1knots
The first type of "cruiser submarine" developped by the japanese navy prior to wwii. They had a very high tonnage (heavier than the current heaviest tier X) and a heavy gun armament for their type. Manual deck guns could be very interesting in those designs.
Type B (1940)
- displacement : 2,230 tons
- armament: 6 × 533 mm Torpedo tubes (6 × front), 1x140mm naval gun
- aircraft: 1xWatanabe E9W1 Slim
- speed: 23.6knots/8knots
An improvement of the previous design. It lost its aft tubes and one gun, but it has 6 forward facing now and is equipped with an observation floatplane
Type C (1940)
- displacement : 2, 220 tons
- armament: 8 × 533 mm Torpedo tubes (8 × front), 1x140mm naval gun
- speed: 23.6knots/8knots
A very similar design to the type B, with 2 more torpedo tube and without aircraft facilities.
3)Aircraft carrier submarine tree
Now the fun part.I'm perfectly aware of the fact that these subs will be completely impossible to implement and/or balance but just for the fun I made a tree with the extravagent "aircraft carrier submarine" designs. The line wasn't too hard since only 3-4 diffrent classes of this type were made.
Type A (1940)
- displacement: 2,966 tons
- armament:6×533 mm torpedo tubes (6 now), 1x140mm naval gun
- aircraft: 1xYokosuka E14Y
- speed: 23.5knots/8knots
Built to take a role of the command ships for submarine squadrons.they had better radio and command facilities and they carried a floatplane.
Type AM (1944)
- displacement : 3,661 tons
- armament: 6×533 mm torpedo tubes (6 bow), 1x140mm gun
- aircraft: 2 × Aichi M6A Seiran
- speed: 16.75knots/5.5knots
A modified design of the A type submarine, able to carry one more plane, but at the cost of a slower speed
- displacement: 5,223 tons
- armament: 8 × 533 mm torpedo tubes (8 bow), 1x140mm gun
- aircraft: 3xAichi M6 Seiran
- speed: 18.7knots/6.5knots
The Infamous I-400 class. The biggest submarine of the war, capable of carrying 3 planes it had a very high range and a powerful torpedo armament but also a relatively slow underwater speed. The displacement was just pure insanity compared to other submarines.
This line was a bit more complicated to make, because the UK didn't follow a specific line when they designed submarines and ended up with lots of very different subs. It was difficult to put them somwhere in the tree considering how diffrent they were from one another. So I had to tinker a bit before I came up with this line, thay said, it could definitively be better
S class (1933)
- displacement: 640 tons
- armament: 6×533 Torpedo tubes (6 forward), 1x76mm gun
The backbone of the british submarine fleet, it was the largest group of submarines ever built for the Royal Navy so even if they were very small compared to others from the same tier, I feel like they deserve to be here.
- displacement: 1,768 tons
- armament: 6×533 Torpedo tubes (6 forward), 1x101mm gun
- speed: 15.5knots/8.75knots
A minelaying submarine class. Much heavier than the S class but also slower. I could've put the river class instead but the difference in displacement between it and the T10 would've been way too high.
T class (1938)
- displacement: 1,290 tons
- armament: 10×533 Torpedo tubes (6 internal forward, 4 external forward), 1x101mm deck gun
- speed: 15.5knots/9knots
A notorious and successful class of submarine and also the last built by the UK before WWII. The main idea behind this design was to have the highest firepower possible within a relatively small displacement. And it had it! With 10 forward tubes, the T class had the biggest torpedo salvo of any submarine of the time, which makes it a perfect candidate for Tier 10.
The Italian tech tree was also a bit difficult, but for other reasons. Indeed Italy made a huge amount of very similar designs between 1930 and 1940, and I had a very wide choice for tier VI and VIII. This line is very homogenous and maybe a bit boring since every tier is nearly the same so I put the Cagni class as a second possible T10 (1700 tons and 14 torpedo tubes, a record for a wwii sub) but it used a smaller caliber(450mm torpedoes) so I don't really know if it's a good thing.
- displacement: 1,054 tons
- armament: 8×533 Torpedo tubes (4 bow, 4 stern), 2x100mm gun
- speed: 17knots/8knots
Initially built for the spanish navy, they were taken by the rrgia marina after their completion. With a rather heavy gun armament and a decent number of torpedo tubes on the stern and bow.
- displacement: 1,043 tons
- armament: 8×533 Torpedo tubes (4 bow, 4 stern), 2x100mm gun
- speed: 17.4knots/8knots
A similar design to the tier VI
- displacement: 1,214 tons
- armament: 8×533 Torpedo tubes (4 bow, 4 stern), 1x100mm gun
The most successful Italian submarine class of the war, also the last. They have the same torpedo armament than the lower tier, but a better speed and a higher displacement.
Tier X (2nd)
- displacement: 1,653 tons
- armament: 14x450mm Torpedo tubes (8 bow, 6 stern), 2x100mm gun
- speed: 17knots/8.5knots
A very big bote. Designed exclusively for commerce raiding. It had the highest number of internal torpedo tubes of any wwii submarine. Althought the caliber was much smaller than classic torpedoes.
A relatively easy tree because candidates weren't numerous. French engineers were very straightforward when they designed oceanic submarines with few classes, but numerous subs. An interesting fact: Every French submarine class from the inter war period shared a peculiar feature: they had rotating torpedo mounts (just likes destroyers and cruiser, with similar firing angles). Ingame this could translate into a very unique playstyle
- displacement: 1,150 tons
- armament:10×550 mm torpedo tubes (4 bow, 2 aft, 2x twin rotating mounts amidship), 1x100mm gun
- speed: 15knots/9knots
The first oceanic class built by France after wwi. They have a heavy armament and displacement for the tier
Le Redoutable (1931)
- displacement: 1,500 tons
- armament:9x550mm torpedo tubes total, 2x400mm torpedo tubes (4x555mm bow, 1x triple 550 rotating mount amidship, 1x quadruple (2×550,2×400) rotating mount stern), 1x100mm gun
- speed: 20knots/10knots
The backbone of the french submarine fleet. They carried 2 different types of torpedoes, 400mm for commerce raiding and 550mm for war purpose. They were quite fast for their displacement, both underwater and on the surface.
Roland Morillot (1940)
- displacement: 1,810 tons
- armament: 13x550mm torpedo tubes (4 bow, 3x triple rotating mounts(1 bow, 1 stern, 1amidship)), 1x100mm gun
Not to be mistaken with ex german
I first thought about the polish submarines. But honestly they didn't have many classes I could use for the tree, so instead I went for the dutch navy. Indeed, they had pretty good submarines which incorporated several innovative features (the schnorkel for example, is a dutch invention). Of all yhe lines, they have the smallest displacement.
- displacement: 610 tons
- armament: 5x533mm torpedo tubes (4 bow, 1 stern)
- speed: 16knots/8knots
Used for patrols in the Dutch home waters, most of them were captured by the german. The smallest submarine so far in T6.
- displacement: 984 tons
- armament: 8x533mm torpedo tubes (4 bow, 2 stern, 2×1 rotating tubes amidship)
- speed: 18knots/9knots
A much sturdier design than the predecessing, it was a unique submarine that featured external rotating tubes (just like the french, but much more limited in numbers and firing angles)
- displacement: 990 tons
- armament: 8x533mm torpedo tubes (4 bow, 2 stern, 2×1 rotating amidship)
- speed: 19.5knots/9knots
Still incomplete at the start of the war, some of them were finished then commissioned under german flag. They were a direct improvement of the O19 class (the first submarine class equipped with a schnorkel)
And that's it. I don't think I've forgotten any important navy. Maybe Poland has enough designs to make a full tree but for now I believ we have enough material for some time. Feel free to add any remark, correction, proposition etc….
Source: Original link
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