Rule the waves 2 中的科技（Technology）

『兵棋综合讨论区』Discussion 『海空战兵棋』Naval And Air Wargames
1

在RtW2中，所有国家都在同时进行科研以发展自己的军用科技。

机制

玩家可以在任何时间将预算的1-12% 用于科研。其默认值为 8%，其后收益不断递减。科研费用将投资于玩家还未解锁的各个技术领域。不同领域的投入优先级可以设置为高、中、低，这将影响该领域的研究速度。

在每个领域中，只要前置的技术完成后，技术进行研究。当然每个科技都有可能被跳过，因此科技的研究不会总是以相同的顺序进行。如果选择的科技太先进了，则不会对该领域进行任何预算投资，资金将重新分配给具有有效研究选择的领域。

AI 国家偶尔也会向玩家提出购买技术，或向玩家出售技术。无论哪种情况，你都可以选择是否接受。通常，一项技术的价值约为4000-5000。与其他国家的结盟（和平协议）也可以提高AI 提供技术交易的几率，为玩家提供更好的价格。

技术领域

等级和名称 ( Lv.,Tech )
等级（Lv.）是该科技在游戏界面中显示的数字。

年份 ( Year )
每项科技都有一个名义上的发展年份。在达到该时间之前就对游戏中的技术进行研究得话，该领域每回合产生的研究点数（RP）将减少，直到达到该时间为止。游戏开发者将其作为一种平衡机制，在游戏的整个过程中，在一定程度上限制较大、较富裕的国家与较小、较贫穷的国家之间的技术差距。

技术扩散 ( Prolif )
在任何国家科研带有“Y”之后，技术扩散使得其他国家也更有可能选择它进行研究。这些带有“Y”得科技往往是舰船外部结构上可以轻易察觉的技术。例如，一旦有一个国家研制出三联装炮塔或安装了一个 12 英尺的测距仪，其他竞争国家也会对研究该技术更感兴趣，因为他们现在已经看到有一个国家使用了它。

几率 ( Chance )
这是在前置技术完成（或被跳过）之后，该特定技术开始进行研究的几率。因此，几率为100的不可能跳过。

成本 ( Cost )
一项科技的每一点成本都需要投入20000 个研究点 (RP) 。因此，成本为3 表示该科技需要 60000 RP 才能完成，10 表示需要 200000 RP，以此类推。每个研究领域的研究点在成功完成该领域的技术研究后重置为零。

影响 ( Effect )
最后一栏是该技术效果的一般列表。

机械开发（ Machinery Development 0）

煤最初是唯一可用的燃料。煤炭是的热效率极低，这意味着需要燃烧更多的煤炭来增加船舶的航程。也需要加煤机将煤铲入熔炉。在长时间的交战中，加煤机可能会感到疲倦，从而导致船的航速下降。战斗中船的航速设置得越高，他们就越容易疲劳。另一方面，煤炭仍然是整个游戏中最便宜的燃料选择。煤仓还通过吸收击中它们的子弹造成的伤害来增加一些保护。

1920年之前，只有当一个国家控制着一个可以产出石油的领土时，石油才能供应。如果一个国家失去了拥有石油的领土，那么所有燃油船都将被迫留在港口（因此无法使用）。同样，封锁可能会阻止石油进入本国领土。从1920年起，所有国家都可以普遍获得石油，并且不再需要拥有产石油的领土，才能使用燃油发动机。

Lv. Tech Year Prolif Chance Cost Effect
0 Improved surface condenser 1900 N 100 3 1% weight saving on machinery
1 Cockburn safety valve 1901 Y 100 4 1% weight saving on machinery
2 Side drums 1902 Y 100 6 1% weight saving on machinery
3 Preheater 1903 N 100 6 1% weight saving on machinery
4 Steam Turbines 1904 Y 100 8 - Considerable weight savings on machinery - Coal stokers appear to tire much slower with engines built after this discovery.
5 Small tube boilers I 1905 N 80 8 1% weight saving on machinery
6 Oil firing 1905 Y 80 8 Enables oil firing if access to oil * No stokers needed for liquid fuel * Somewhat lighter than coal engines
7 Economizer 1906 Y 100 5 1% weight saving on machinery
8 Small tube boilers II 1908 N 80 8 1% weight saving on machinery
9 Superheater 1912 N 100 10 1% weight saving on machinery
10 Circulation augmenter 1914 N 100 10 1% weight saving on machinery
11 Reduction gears 1916 N 80 10 Increases endurance
12 Water wall furnace 1918 N 100 10 1% weight saving on machinery
13 Advanced superheater 1920 N 80 10 1% weight saving on machinery
14 Double reduction gears 1922 N 80 14 1% weight saving on machinery
15 Forced circulation 1924 N 100 10 1% weight saving on machinery
16 Large diesel engines 1925 N 50 10 Enables diesel engines on ships * More fuel efficient than oil * Improved acceleration * Heavier than oil for short ranges
17 Turbo electric drive 1926 N 100 12 1% weight saving on machinery
18 Improved oil burners 1928 N 100 10 2% weight saving on machinery
19 350 psi steam plant 1930 N 100 10 2% weight saving on machinery
20 Lighter Steam Turbines 1933 Y 100 6 2% weight saving on machinery
21 500 psi steam plant 1935 N 100 10 2% weight saving on machinery
22 Variable pitch propellers 1937 N 100 10 Improves range for cruisers.
23 Improved high pressure steam plants 1941 N 100 10 1% weight saving on machinery
24 Supercharged diesels 1943 N 70 10 Reduces weight of diesel engines by 10%
25 Lightweight engine component materials 1945 N 100 10 1% weight saving on machinery
26 Forced lubrication 1947 N 100 10 1% weight saving on machinery

装甲发展 ( Armour Development 1)

Lv. Tech Year Prolif Chance Cost Effect
0 Krupp armour 1900 Y 100 3 Gradual improvement of armour quality
1 Face hardening 1902 N 100 6 Gradual improvement of armour quality
2 Quality control 1904 N 100 8 Gradual improvement of armour quality and 1% weight saving
3 Improved annealing 1906 N 100 8 Gradual improvement of armour quality
4 Krupp Cementit 1908 Y 100 8 Gradual improvement of armour quality
5 Quality control II 1910 N 100 10 Gradual improvement of armour quality and 1% weight saving
6 Improved armour bracing 1912 Y 90 10 2% weight saving on armour
7 Improved face hardening 1914 N 90 10 Gradual improvement of armour quality
8 Improved homogenous armour 1916 N 100 14 Gradual improvement of armour quality
9 Inclined belt 1916 Y 90 16 Enables inclined belt
10 Improved armour testing methods 1920 N 80 14 Gradual improvement of armour quality and 1% weight saving
11 Internal belt 1922 Y 80 14 Gradual improvement of armour quality
12 Interlocked armor plates 1921 N 80 14 Gradual improvement of armour quality
13 Integral Armour 1923 N 80 14 2% weight saving on armour
14 Decapping belt 1924 N 80 14 Gradual improvement of armour quality
15 Advanced face hardening 1926 N 80 14 Gradual improvement of armour quality
16 Advanced alloying 1928 N 80 14 Gradual improvement of armour quality
17 Microphotography for armour breakage studies 1930 N 80 14 Gradual improvement of armour quality
18 Post-hardening tempering process 1932 N 80 14 Gradual improvement of armour quality
19 X-Ray quality testing 1934 N 80 14 Gradual improvement of armour quality
20 Reduced impurities 1935 N 80 14 Gradual improvement of armour quality
21 Temper brittleness mastered 1937 N 80 14 Gradual improvement of armour quality
22 Improved armour face toughness 1939 N 80 14 Gradual improvement of armour quality
23 Micro alloy additions (vanadium, boron, copper) 1941 N 80 14 Gradual improvement of armour quality
24 Thermo mechanically treated armour materials 1944 N 80 14 Gradual improvement of armour quality

Hull Construction (2)

Lv. Tech Year Prolif Chance Cost Effect
0 Improved riveting techniques 1901 Y 100 6 1% weight saving on hull
1 High tensile steel 1902 Y 100 6 1% weight saving on hull
2 Basic weight control 1903 Y 100 8 1% weight saving on hull
3 Testing tank for hull form 1904 N 80 6 Reduces engine HP requirements
4 Improved rolled shipbuilding steel 1904 Y 100 6 1% weight saving on hull
5 Longitudinal framing 1905 N 100 7 1% weight saving on hull
6 Improved weight control 1908 Y 100 6 1% weight saving on hull
7 Hydraulic riveting 1910 Y 100 6 1% weight saving on hull
8 Better steel quality 1911 Y 100 8 1% weight saving on hull
9 Improved longitudinal framing 1914 N 100 10 1% weight saving on hull
10 Slender hull girders 1916 Y 100 12 1% weight saving on hull
11 Improved design calculations 1918 Y 100 12 1% weight saving on hull
12 Weight saving 1920 Y 100 12 1% weight saving on hull
13 Partial welding 1922 N 100 12 1% weight saving on hull
14 Hydrodynamic hull form 1922 N 80 12 Reduces engine HP requirements
15 Lightweight fittings 1923 Y 100 12 1% weight saving on hull
16 Lightweight scantlings 1925 N 100 22 1% weight saving on hull
17 Welded hull 1930 Y 100 20 1% weight saving on hull
18 Improved welding 1934 Y 100 22 1% weight saving on hull
19 Lightweight materials 1938 Y 100 22 1% weight saving on hull
20 Advanced welding 1942 Y 80 22 1% weight saving on hull
21 High-strength alloyed steel 1944 N 80 15 1% weight saving on hull
22 Plastic interior fittings 1949 Y 100 22 1% weight saving on hull

Fire Control (3)

Lv. Tech Year Prolif Chance Cost Effect
0 Coincidence rangefinder 1900 Y 100 3 Gradual national accuracy improvement
1 6 ft rangefinder 1902 Y 100 4 Gradual national accuracy improvement
2 Central firing 1903 Y 100 6 Enables Central Firing FC system on ships
3 Range calculator 1903 N 90 6 Gradual national accuracy improvement
4 Control tops 1904 Y 90 7 Gradual national accuracy improvement
5 Automatic range transmitter 1905 N 100 5 Gradual national accuracy improvement
6 9 ft rangfinder 1905 Y 100 5 Gradual national accuracy improvement
7 Mechanical fire control computer 1905 N 90 6 Gradual national accuracy improvement
8 Stereoscopic rangefinder 1906 N 40 5 Gradual national accuracy improvement
9 Plotting table 1908 Y 90 6 Gradual national accuracy improvement
10 Target designator 1911 N 90 8 Gradual national accuracy improvement
11 Director firing 1912 Y 100 8 Enables Director FC system on ships
12 12 ft rangefinder 1912 Y 100 8 Gradual national accuracy improvement
13 Ladder shooting 1912 N 70 10 Gradual national accuracy improvement
14 Gyro stabiliser 1913 N 80 10 Gradual national accuracy improvement
15 15 ft rangefinder 1914 Y 80 10 Gradual national accuracy improvement
16 Secondary director 1914 N 80 10 Enables directors for secondary battery and for CL
17 Improved Director 1918 N 100 15 Enables Improved Director FC system on ships
18 Synthetic fire control computer 1922 N 100 14 Reduces penalty for own ship turning
19 Advanced director 1926 Y 80 22 Enables Advanced Director FC system on ships
20 Secondary director for CL 1926 Y 80 22 Enables secondary director on CL
21 Improved optics quality 1933 Y 90 22 Gradual national accuracy improvement
22 Electro optical director 1942 N 80 22 Enables Electro Optical Director FC system on ships
23 Improved electro optical director 1946 N 80 22 Gradual national accuracy improvement
24 Early electronic gunnery computer 1948 N 80 22 Gradual national accuracy improvement
25 Improved electronic gunnery computer 1954 N 80 22 Gradual national accuracy improvement
26 Increased electronic computing power 1957 N 80 22 Gradual national accuracy improvement

Subdivision and Damage Control (4)

Lv. Tech Year Prolif Chance Cost Effect
0 Double bottom 1901 Y 100 6 Gradual damage control improvement
1 Improved subdivision 1903 N 80 6 Gradual damage control improvement
2 Torpedo protection I 1906 N 80 6 Enables Torpedo protection I on ships
3 High capacity pumps I 1908 N 80 8 Gradual damage control improvement
4 Torpedo protection II 1909 N 50 8 Enables Torpedo protection II on ships
5 Extended double bottom 1910 N 50 9 Gradual damage control improvement
6 High capacity pumps II 1912 N 50 9 Gradual damage control improvement
7 Diesel generators 1914 N 50 10 Gradual damage control improvement
8 Triple bottom 1916 N 50 12 Gradual damage control improvement
9 Improved firefighting equipment 1917 N 50 10 Gradual damage control improvement
10 Torpedo protection III 1919 N 50 12 Enables Torpedo protection III on ships
11 Improved counterflooding equipment 1923 N 50 14 Gradual damage control improvement
12 Torpedo protection IV 1924 N 50 12 Enables Torpedo protection IV on ships
13 Non flammable materials 1924 N 50 14 Gradual damage control improvement
14 Improved watertight hatches 1925 N 90 12 Gradual damage control improvement
15 Improved damage control practices 1930 N 90 14 Gradual damage control improvement
16 Increased fire hazard awareness 1935 N 90 14 Gradual damage control improvement
17 Portable pumps 1939 N 90 14 Gradual damage control improvement
18 Built in foam extinguisher systems 1940 N 90 14 Gradual damage control improvement

Turrets and Gun Mountings (5)

Initial turret limitations as of 1900:

  • -20% ROF for multi-barrel primary turrets below 7 inches, and -10% at 8 inches
  • -40% ROF for multi-barrel secondary turrets below 7 inches, and -20% ROF at 7 inches
  • -20% ROF for single secondaries below 7 inches in full turrets (> 2" armor), and at 7 inches
  • No ROF penalty for casemates or single turrets below 7 inches with gun shields (2" armor or less)
  • No more than 2 barrels per turret
Lv. Tech Year Prolif Chance Cost Effect
0 Hydraulic recoil 1900 Y 100 3 Gradual national ROF improvement
1 Power rammers 1901 Y 100 5 Gradual national ROF improvement
2 Pneumatic recuperator 1903 N 100 6 Gradual national ROF improvement
3 Improved turret design 1904 N 90 6 1% Weight saving on turrets
4 Mechanical shell handling 1905 Y 100 5 Gradual national ROF improvement
5 Improved hoists 1906 N 100 5 Gradual national ROF improvement
6 Triple turrets 1908 Y 80 8 Enables triple turrets
7 Hydraulic rammers 1908 N 100 6 Gradual national ROF improvement
8 Reliable power training and elevation 1914 N 60 7 Reduces ROF penalties listed above to: * -10% ROF for multi-barrel primary turrets below 8", and for 8" guns in triple/quad turrets * -20% ROF for multi-barrel secondary turrets below 8" * No change for single turrets
9 Improved triple turrets 1914 Y 70 12 Eliminates ROF and reliability penalty for triple turrets
10 Quadruple turrets 1914 Y 50 10 Enables quadruple turrets
11 Increased elevation 1916 Y 90 12 Enables increased elevation
12 Dual purpose mounting 1917 Y 70 12 Enables 3 and 4 inch guns in single DP mounts
13 Improved power training and elevation 1920 N 60 8 Eliminates ROF penalty for guns below 8 inches in turrets
14 Double gun mounts on CL 1921 Y 80 12 Enables double gun mounts on CL
15 Weight savings in turret fittings 1925 N 90 12 1% Weight saving on turrets
16 Improved Quadruple turrets 1929 N 50 14 Eliminates ROF and reliability penalty for quadruple turrets
17 Increased loading mechanization 1930 N 90 12 Gradual national ROF improvement
18 Electric elevation and training 1934 N 70 12 Gradual national ROF improvement
19 Improved power rammers 1938 N 90 12 Gradual national ROF improvement
20 6 in autoloader 1943 N 90 15 Enables autoloader for 6 in guns
21 7 and 8 in autoloader 1945 N 90 15 Enables autoloader for 7 and 8 in guns
22 Improved autoloader 1948 N 90 15 Enables improved autoloader

Ship Design (6)

Initial turret limitations as of 1900:

  • Primary wing turrets up to 7 inches
  • Secondary guns up to 7 inches in casemates or single turrets
  • Secondary guns up to 6 inches in multi-barrel turrets
Lv. Tech Year Prolif Chance Cost Effect
0 Heavy secondary battery 1900 Y 70 5 Eliminates size restrictions on secondary casemates or single turrets
1 Medium wing turrets 1901 Y 90 6 - Increases maximum size of primary wing turrets to 10 inches (See *)- Increases maximum size of multi-barrel secondaries to 10 inches
2 3 centreline turrets 1903 Y 70 12 Enables 3 centreline main turrets on ships
3 Main battery wing turrets 1904 Y 80 10 - Eliminates size restrictions on primary wing turrets (See *) - Eliminates size restrictions on multi-barrel secondaries
4 Cross deck fire 1905 N 70 6 Enables cross-deck fire for staggered wing turrets (positions F & K or G & J)
5 Superimposed X turret 1905 Y 70 8 - Enables superimposed V turret on ships larger than CL - Enables superimposed X turret on BC/BB
6 4 centreline turrets 1906 Y 70 10 Enables 4 centreline main turrets on ships
7 Light cruiser armour configuration 1906 Y 100 6 Enables light cruiser armour configuration
8 Superimposed B turret 1906 Y 70 8 Enables superimposed B turret on BC/BB
9 5+ centreline turrets 1908 Y 70 10 Enables 5 or more centreline main turrets on ships
10 Secondary turrets on BB 1909 Y 70 12 Enables multi-barrel secondaries on BB (previously only available on B, BC, or CA)
11 AON armour 1911 N 60 15 Gives full benefits of all or nothing armour layout (no BE or DE)
12 Efficient hull form 1915 N 80 12 Reduces engine HP requirements
13 Superimposed turrets on CA 1917 Y 100 14 Enables X and B turrets on CA
14 Unit Machinery 1917 Y 100 7 Enables unit machinery, which reduces speed losses from machinery damage
15 Advanced design calculations 1918 Y 90 15 1% weight saving on hull
16 Magazine box protection 1922 N 90 4 Enables magazine box protection scheme
17 More efficient hull form 1922 Y 80 12 Reduces engine HP requirements
18 All forward main armament 1923 N 80 10 Enables weight benefits from all forward main armament (A, AB, AL, ABC, ABL, ABQ)
19 Triple turrets on CL 1925 Y 80 12 Enables triple turrets on CL
20 Advanced weight saving 1926 Y 90 12 1% weight saving on hull
21 Bulbous bow 1930 Y 90 15 Reduces engine HP requirements
22 Lightweight materials 1934 Y 90 15 1% weight saving on hull
23 Improved hull design methods 1938 Y 90 10 Reduces armour weight by 1%
24 Improved bulbous bow 1940 Y 90 14 Reduces horsepower requirements
25 Modern lightweight materials 1944 N 80 20 1% weight saving on hull

AP Projectiles (7)

Lv. Tech Year Prolif Chance Cost Effect
0 Hardened AP penetrator 1901 Y 80 6 Gradual AP penetration improvement
1 Reliable bursting charges 1902 Y 80 5 Enhances damage from penetrating hits
2 Capped AP projectiles 1905 Y 80 6 Gradual AP penetration improvement
3 Improved AP cap 1906 Y 60 8 Gradual AP penetration improvement
4 Increased oblique penetration ability 1908 N 30 10 Gradual AP penetration improvement
5 Improved AP penetrator alloys 1910 N 30 10 Gradual AP penetration improvement
6 Stable explosive filler 1911 N 40 10 Enhances damage from penetrating hits
7 Ballistic cap 1912 N 70 12 Gradual AP penetration improvement
8 Improved shell quality control 1916 N 50 12 Gradual AP penetration improvement
9 Heavy shells 1916 N 60 15 Gradual AP penetration improvement
10 Improved ballistc cap 1918 N 100 14 Gradual AP penetration improvement
11 Advanced penerator alloys 1922 N 100 14 Gradual AP penetration improvement
12 Super heavy shells 1924 N 60 15 Gradual AP penetration improvement
13 Increased muzzle velocity 1926 N 60 15 Gradual AP penetration improvement
14 Decremental chilling technique 1931 N 70 15 Gradual AP penetration improvement
15 Improved alloys 1933 N 60 15 Gradual AP penetration improvement
16 Diving shells 1933 N 20 15 Enables use of diving shells
17 Shatter resistant shells 1935 N 70 12 Gradual AP penetration improvement
18 Advanced AP cap design 1938 N 70 15 Gradual AP penetration improvement
19 Super hardened penetrator 1940 N 70 15 Gradual AP penetration improvement
20 Advanced penetrator alloys 1943 N 70 15 Gradual AP penetration improvement
21 Improved streamlining 1946 Y 90 12 Gradual AP penetration improvement

Light Forces and Torpedo Warfare (8)

Lv. Tech Year Prolif Chance Cost Effect
0 DD of up to 600 tons displacement 1901 Y 80 3 Enables building of DD up to 600 tons displacement
1 DD of up to 700 tons displacement 1906 Y 80 5 Enables building of DD up to 700 tons displacement
2 DD of up to 900t displacement 1908 Y 90 6 Enables building of DD up to 900 tons displacement
3 Double torpedo tube mount 1912 Y 70 5 Enables double torpedo mounts
4 DD of up to 1100t displacement 1912 Y 80 7 Enables building of DD up to 1100 tons displacement
5 Triple torpedo tube mount 1914 Y 70 12 Enables triple torpedo mounts
6 DD of up to 1500t displacement 1914 Y 50 10 Enables building of DD up to 1500 tons displacement
7 Above water tubes on CL 1914 Y 80 10 Enables above water torpedo mounts on CL
8 Superimposed X mount on CL 1914 Y 80 10 Enables superimposed X gun mounts on CL
9 Superimposed guns on DD 1915 Y 80 9 Enables superimposed gun mounts on DD
10 Quadruple torpedo tube mount 1915 Y 80 12 Enables quadruple torpedo mounts
11 Motor torpedo boats 1916 Y 50 10 Enables building of MTB squadrons
12 Superimposed B mount on CL 1917 Y 80 14 Enables superimposed B gun mounts on CL
13 Above water tubes on other ships 1920 Y 80 12 Enables above water torpedo mounts on all ships
14 DD of up to 2000t displacement 1923 Y 50 10 Enables building of DD up to 2000 tons displacement
15 Double gun mounts on DD 1924 Y 80 15 Enables double gun mounts on DD
16 Dual purpose guns as main armament for DD 1925 N 90 12 Enables DP guns as main armament for DD
17 Reloads for deck mounted torpedo tubes 1927 N 80 6 Enables reloads for above water mounted torpedo tubes
18 Weight savings in torpedo mounts 1931 Y 80 12 Reduces torpedo mount weight
19 DD of up to 2500t displacement 1932 Y 50 10 Enables building of DD up to 2500 tons displacement
20 Improved motor torpedo boats 1934 Y 50 10 MTB squadrons will have improved MTB boats
21 Improved power training for torpedo mounts 1936 N 80 18 Increases torpedo readiness
22 Magnetic mines 1938 N 70 14 Improves mine efficiency
23 Quintuple torpedo tube mount 1942 Y 80 14 Enables quintuple torpedo mounts
24 Lightweight materials for torpedo mounts 1947 Y 80 14 Reduces torpedo mount weight
25 Modern control systems 1952 N 80 14 Reduces torpedo mount weight

Torpedo Technology (9)

Lv. Tech Year Prolif Chance Cost Effect
0 Improved hydrostatic valve 1900 Y 90 4 Torpedoes now have range@speed 800@25/2000@15
1 Reliable pendulum mechanism 1903 N 90 5 Torpedoes now have range@speed 900@28/2500@15
2 Gyroscope 1904 N 90 5 Torpedoes now have range@speed 1000@28/3000@15
3 Improved compressed air supply 1905 N 90 8 Torpedoes now have range@speed 2000@28/4000@18
4 Larger torpedo warheads 1905 N 90 6 Torpedoes do more damage
5 Contra rotating propellers 1907 N 90 8 Torpedoes now have range@speed 3000@28/5000@20
6 Preheater 1908 N 90 6 Torpedoes now have range@speed 3500@30/7000@22
7 Horizontal turbines 1910 N 90 8 Torpedoes now have range@speed 3800@30/8000@25
8 Wet heater engine 1912 N 90 10 Torpedoes now have range@speed 4000@33/9000@26
9 TNT warhead 1913 N 90 10 Torpedoes do more damage
10 Improved gyroscope 1914 N 90 12 Torpedoes now have range@speed 4500@37/10000@27
11 Lengthened torpedoes 1916 N 90 12 Torpedoes now have range@speed 4800@37/10500@27
12 Enhanced pressure bottle 1918 N 90 12 Torpedoes now have range@speed 4900@37/11500@27
13 Enhanced warhead explosives 1920 N 90 10 Torpedoes do more damage
14 Improved wet heater engine 1922 N 90 12 Torpedoes now have range@speed 5000@38/12000@27
15 Advanced preheater 1926 N 20 12 Torpedoes now have range@speed 5000@38/13000@27
16 Oxygen fuelled torpedoes 1930 N 20 12 Enables oxygen fuelled torpedoes
17 Improved gyroscope 1935 N 80 5 Improves torpedo reliability
18 Magnetic pistols 1937 N 60 10 Torpedoes do more damage (if used)
19 More powerful compressed air ejection 1937 N 60 10 Centreline torpedo tubes allowed on ships up to 3500 tons
20 Advanced centerline torpedo mounts 1939 N 60 10 Centreline torpedo tubes allowed on ships up to 7000 tons
21 Motobomba FFF 1942 N 10 10 Air dropped torpedoes will run patterns
22 Torpex warhead 1942 N 60 8 Torpedoes do more damage
4 个赞
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Submarines (10)

Lv. Tech Year Prolif Chance Cost Effect
0 Pressure hull 1901 Y 100 3 5% increase of submarine reliability
1 Early coastal submarine 1901 Y 100 4 Enables building of coastal submarines
2 Periscope 1902 Y 100 5 5% increase of submarine reliability
3 Diving planes 1903 Y 100 5 5% increase of submarine reliability
4 Coastal submarine 1906 Y 100 5 Better operating range for coastal submarines
5 Torpedo aiming system 1907 Y 90 5 5% increase of submarine reliability
6 Diesel engines 1908 N 90 5 5% increase of submarine reliability
7 Improved diving gear 1909 N 90 5 5% increase of submarine reliability
8 Internal torpedo stowage 1911 N 50 5 5% increase of submarine reliability
9 Medium range submarine 1910 N 100 8 Enables building of medium range submarines
10 Improved compressed air supply 1912 N 50 10 5% increase of submarine reliability
11 Minelaying submarine 1914 N 30 8 Enables building of minelaying submarines
12 Improved diesel engines 1916 N 30 12 5% increase of submarine reliability
13 Increased battery capacity 1920 N 80 12 5% increase of submarine reliability
14 Improved pressure hull 1922 N 100 15 5% increase of submarine reliability
15 Improved electric engines 1926 N 100 15 Increase in submarine effectiveness
16 Sound location devices for submarines 1930 N 90 15 Increase in submarine effectiveness
17 Night surfaced torpedo attacks 1933 N 90 10 Increase in submarine effectiveness
18 Improved welding 1934 N 80 15 5% increase of submarine reliability
19 Chemical oxygen generator 1936 N 80 15 5% increase of submarine reliability
20 Snorkel 1937 N 60 15 Increase in submarine effectiveness
21 Wolf pack tactics 1938 N 90 12 Increase in submarine effectiveness
22 Anechoic plating 1940 N 90 15 Increase in submarine effectiveness
23 Teardrop hull 1943 N 80 15 Increase in submarine effectiveness
24 Electric torpedo-reloading system 1943 N 80 10 Increase in submarine effectiveness
25 Elektro boat 1943 N 80 10 Increase in submarine effectiveness
26 High-strength alloyed steel hull 1946 N 80 15 5% increase of submarine reliability

ASW Technology (11)

Lv. Tech Year Prolif Chance Cost Effect
0 Explosive sweeps 1907 Y 100 5 Gradual increase in national ASW capability
1 Anti submarine nets 1907 Y 100 5 Gradual increase in national ASW capability
2 ASW mines 1908 Y 70 6 Gradual increase in national ASW capability
3 Q-Ships 1908 Y 80 6 Enables Q-ships
4 Hydrostatic pistols 1914 Y 80 6 Gradual increase in national ASW capability
5 Depth charges 1916 Y 80 12 Enables depth charges on ships
6 Early hydrophones 1916 Y 100 10 Gradual increase in national ASW capability
7 Improved depth charges 1917 Y 80 12 Gradual increase in national ASW capability
8 Convoy system 1917 Y 100 16 Reduction in merchant losses to submarines
9 Improved depth charge racks 1918 Y 100 10 Gradual increase in national ASW capability
10 Reliable hydrostatic pistols 1920 Y 100 14 Gradual increase in national ASW capability
11 K-guns 1924 Y 100 10 Enables K-guns
12 Improved hydrophones 1926 N 80 14 Gradual increase in national ASW capability
13 Heavier depth charges 1935 N 80 15 Gradual increase in national ASW capability
14 Forward firing ASW mortar 1941 N 80 15 Enables forward ASW mortar
15 Improved ASW tacics 1943 N 80 8 Increases kill chance of enemy submarines
16 ASW torpedoes 1944 N 80 12 Gradual increase in national ASW capability
17 Depth charge mortar 1945 N 80 10 Enables trainable depth charge mortars
18 Improved ASW torpedoes 1950 N 80 15 Gradual increase in national ASW capability

Explosive Shells (12)

Lv. Tech Year Prolif Chance Cost Effect
0 Lyddite bursting charges 1901 Y 80 5 Gradual increase in shell damage
1 Safe fuze arming devices 1902 Y 80 6 Gradual increase in shell damage
2 Improved explosive filler packing 1905 Y 100 9 Gradual increase in shell damage
3 TNT bursting charges 1906 Y 80 9 Gradual increase in shell damage
4 Reliable delay fuzes 1907 Y 70 9 Increase in AP shell damage
5 Quality steel for shells 1908 Y 70 9 Gradual increase in HE shell damage
6 Base fuzes 1910 Y 80 9 Enables SAP ammo
7 Improved fuzes 1912 Y 70 9 Gradual increase in HE shell damage
8 Enhanced high explosive filler 1914 Y 70 9 Gradual increase in HE shell damage
9 Improved shell wall castings 1916 Y 70 12 Gradual increase in HE shell damage
10 Improved fuze reliability 1920 Y 70 12 Reduced dud rate
11 Enhanced explosive filler 1923 Y 90 12 Gradual increase in shell damage
12 Automated fuze setting 1934 N 90 12 Increases HAA effectiveness
13 Streamlined shells 1935 N 90 12 Increases gun range by 5%
14 TNT filler 1939 Y 90 12 Gradual increase in shell damage
15 Improved automated fuze setting 1941 N 80 12 Increases HAA effectiveness

Fleet Tactics (13)

Lv. Tech Year Prolif Chance Cost Effect
0 Active mine warfare 1902 Y 80 8 Increased use of defensive minefields
1 Improved signalling 1904 Y 80 8 Makes signalling errors less likely
2 Destroyer screen 1906 Y 90 12 Enables screen formation for DD
3 Scouting force 1907 Y 80 10 Enables a separate scouting force with CA and BC
4 Mine rails on CL and DD 1908 Y 50 15 Enables fitting of mine rails on CL and DD
5 Fleet cruising formation 1910 Y 90 15 Enables cruising formation in parallel columns for the fleet
6 Battle turn away 1910 Y 50 15 Enables battle turn away maneuver
7 Effective sigint 1912 N 50 15 Better pre-battle enemy strength assessment
8 Smoke Floats 1912 N 50 15 Gives light cruisers the ability to launch smoke floats
9 Concentration firing 1914 N 50 15 Reduces the penalty for more than one ship firing at the same target
10 Advanced signalling 1915 Y 50 15 Makes signalling errors less likely
11 Shell dyes 1920 Y 80 12 Reduces the penalty for more than one ship firing at the same target
12 Carrier force 1923 N 70 12 Carriers will operate in separate force
13 Voice radio 1928 Y 80 12 Makes signalling errors less likely
14 Improved fleet logistics 1930 Y 80 12 Improves fleet logistics and reduces risk of breakdowns
15 Flexible station keeping 1930 Y 80 15 Enables looser division formations and reduces enemy accuracy
16 Effective smoke generators 1934 Y 80 15 More effective smoke screens from all ship types
17 Underway replenishment 1935 Y 80 12 Improves fleet logistics
18 Effective camouflage schemes 1938 Y 80 15 Reduces enemy sighting range and hit chance
19 Fleet train 1940 Y 80 10 Improves fleet logistics and invasion capability
20 IFF system 1941 N 80 8 Increases CAP effectiveness
21 Three tier air defense perimeter 1941 Y 80 8 Increases CAP And AA effectiveness (with air search radar)
22 Circular AA screen 1942 N 90 4 Enables circular screens and improves AA effectivness. Allows BB to screen CV.
23 Integrated CIC 1943 N 80 8 Increases CAP effectiveness
24 Improved radar vecoring of CAP 1944 N 80 15 Increases CAP effectiveness (with air search radar)
25 Chaff dispensers 1944 N 70 8 Reduces missile hit chances on ships

Anti Aircraft Artillery (14)

Lv. Tech Year Prolif Chance Cost Effect
0 Heavy AA MG 1918 Y 100 3 Enables light AA weapons
1 HA rangefinder 1918 Y 100 6 Improves HAA effectiveness
2 20 mm automatic cannon 1920 Y 100 6 Improves LAA effectiveness
3 40 mm automatic cannon 1922 Y 60 12 Enables medium AA weapons
4 HA geared sight 1924 Y 80 8 Improves HAA effectiveness
5 3 and 4 in twin dual purpose mounting 1926 Y 70 8 Enables 3 and 4 in twin DP mounts
6 Early AA director 1926 Y 90 10 Enables AA director on ships
7 Fixed zone AA barrage 1929 Y 80 8 Improves HAA effectiveness
8 5 in dual purpose mounting 1933 N 60 8 Enables 5 in DP mounts
9 Improved 20 mm automatic cannon 1934 Y 100 8 Improves LAA effectiveness
10 6 in dual purpose mounting 1934 N 30 10 Enables 6 in DP mounts
11 Improved anti aircraft director 1935 N 80 10 Improves HAA and MAA effectiveness
12 Creeping Zone AA barrage 1935 Y 80 10 Improves HAA effectiveness
13 Improved 40 mm automatic cannon 1936 Y 70 10 Improves MAA effectiveness
14 Power mounts for light and medium AA 1939 Y 70 10 Improves LAA and MAA effectiveness
15 Advanced anti aircraft director 1940 N 80 12 Improves HAA and MAA effectiveness
16 Quadruple LAA mountings 1941 Y 70 12 Improves LAA effectiveness
17 Modern quadruple MAA mountings 1942 Y 70 10 Improves MAA effectiveness
18 Large shrapnel AA shells 1942 Y 30 6 Gives limited AA capability to heavy main guns
19 Gyroscopic sights for LAA and MAA 1944 N 60 6 Improves LAA and MAA effectiveness
20 3 in autoloaded DP gun 1946 Y 70 12 Improves effectiveness of 3 in DP guns
21 4 in autoloaded DP gun 1950 Y 70 12 Improves effectiveness of 4 in DP guns
22 5 in autoloaded DP gun 1953 Y 70 12 Improves effectiveness of 5 in DP guns
23 Improved radar direction of AA guns 1953 N 80 10 Improves HAA and MAA effectiveness

Radar and Electronics (15)

Lv. Tech Year Prolif Chance Cost Effect
0 Early surface search radar 1937 N 100 9 Enables surface search radar (Search radar 1)
1 Improved surface search radar 1939 N 80 8 Improves surface search radar (Search radar 2)
2 Early air search radar 1939 N 80 8 Enables air search radar
3 Airborne radar 1939 N 60 12 Enables airborne radar
4 Radar assisted gunnery 1940 N 80 10 Increases gunnery accuracy with radar (FC radar 1)
5 Cavity magnetron 1940 N 40 8 Increases radar range (Search radar 3)
6 Slow fade display 1940 N 60 6 Increases radar detection chance
7 Improved air search radar 1940 N 80 10 Improves air search radar
8 VHF Radio in aircraft 1940 N 80 6 Increases CAP effectiveness
9 Early blind fire capability 1941 N 70 10 Enables blind fire (FC radar 2)
10 Shipborne HF/DF 1942 N 60 8 Improves intelligence and ASW capability
11 Improved blind fire capability 1942 N 70 10 Improves blind fire accuracy (FC radar 3)
12 Proximity fuzes 1943 N 80 14 Increases 5 and 6 in AA effectiveness
13 S band radar 1944 N 70 10 Improves radar capabilities (Search radar 4, FC radar 4)
14 Anti missile jamming system 1944 N 70 10 Reduces hit chance of missiles and guided bombs
15 Monopulse radar 1950 N 70 12 Improves radar range (Search radar 5)
16 Imrpoved anti missile jamming system 1952 N 70 12 Enables improved anti missile jamming systems

Naval Aviation, Lighter than Air (16)

Lv. Tech Year Prolif Chance Cost Effect
0 Early airships 1911 Y 70 8 Enables airships
1 Improved airship tail design 1914 Y 70 6 Improves airship performance
2 Improved airship engines 1915 N 70 8 Improves airship performance
3 Airship bomb armament 1915 N 70 8 Enables airship bomb armament
4 Aircraft carrying airships 1922 N 70 12 Enables aircraft carrying airships
5 Large scale helium production 1923 N 60 10 Airships are more reliable
6 Improved airship diesel engines 1926 N 60 10 Improves airship performance

Naval Aviation, Heavier than Air (17)

Lv. Tech Year Prolif Chance Cost Effect
0 Seaplane scouts 1915 N 70 6 Enables bases for flying boats
1 Aircraft bombing of ships 1916 N 70 6 Enables air bombing of ships with light bombs
2 Early air launched torpedoes 1917 N 70 6 Enables air launched torpedoes
3 Aircraft catapult 1923 N 70 10 Enables seaplane catapults on ships other than carriers
4 Later air launched torpedoes 1930 N 70 10 Improves hit chances of air launched torpedoes
5 Dive bombing 1930 N 70 8 Enables dive bombers
6 Air/Sea rescue 1935 Y 20 8 Improves pilot survival and thus mitigates experience degradation from air losses
7 Improved dive bombers 1938 N 70 10 Enables improved dive bombers
8 Improved air launched torpedoes 1938 N 70 10 Improves hit chances of air launched torpedoes
9 Aerial depth charges 1941 N 80 10 Increases ASW value of aircraft carriers and air bases
10 Coordinated airstrike management 1941 N 70 10 Allows coordinated strikes from several carriers
11 AP bombs 1942 N 90 6 Enables use of AP bombs by aircraft
12 Skip bombing 1942 N 50 10 Increases effectiveness of level bombers in anti shipping attacks
13 Leigh light 1942 N 80 8 Increases ASW effect of air bases
14 Bombentorpedo 1944 N 40 10 Near misses from glide bombing have a chance of being converted to torpedo hits

Shipboard Aircraft Operation (18)

Lv. Tech Year Prolif Chance Cost Effect
0 Seaplane carrier 1914 Y 70 6 Enables small floatplane carriers
1 Improved seaplane carrier 1916 Y 70 8 Enables larger floatplane carriers
2 Flight deck 1918 Y 70 10 Enables CVL conversions
3 Purpose built aircraft carrier 1920 Y 80 8 Enables CVL construction
4 Aircraft carrier conversion 1921 Y 70 10 Enables CV conversions
5 Transverse arrestor wires 1925 N 70 8 Lowers risk of landing accidents
6 Large aircraft carrier 1926 Y 100 12 Enables purpose built CV
7 Better aircraft handling practices 1927 N 70 8 Increases aircraft capacity and ready times of carriers
8 Improved landing guidance systems 1929 N 70 8 Lowers risk of landing accidents
9 Deck park 1930 Y 70 10 Increases aircraft capacity of carriers
10 Improved arrestor wires 1931 N 70 10 Lowers risk of landing accidents
11 Deck edge lifts 1934 N 70 10 Improves readying times of aircraft
12 Improved carrier design 1936 Y 80 10 Increases maximum carrier size
13 Flight deck catapults 1936 Y 50 6 Enables catapults on aircraft carriers
14 Air intercept control system 1938 Y 80 12 Increases CAP effectiveness
15 Improved aircraft handling practices 1940 N 70 12 Increases maximum carrier size
16 Two phase search 1942 N 70 4 Enables two phase search
17 CIC 1942 N 70 12 Increases CAP effectiveness
18 Deck launched interceptors 1942 N 70 8 Increases CAP effectiveness
19 Improved carrier design 1944 Y 80 10 Increases maximum carrier size
20 Angled flight deck 1950 Y 80 15 Enables angled flight deck, which allows more than 2 flight deck catapults

Missile Technology (19)

Lv. Tech Year Prolif Chance Cost Effect
0 Guided bomb 1943 N 70 12 Increases air attack effectiveness
1 Early ASM 1943 N 60 10 Enables air attacks with ASM
2 Early SAM 1945 N 70 12 Enables early SAM mounts
3 Early SSM† 1949 N 70 12 Enables early SSM mounts
4 Double SAM launchers 1953 Y 70 6 Allows double SAM launchers
5 Improved SAM 1954 N 70 12 Increases SAM hit rate
6 Reliable ASM 1955 N 70 12 Increases ASM hit rate
7 Light SAM† 1955 N 70 12 Enables light SAM mounts
8 Heavy SAM† 1955 N 70 12 Enables heavy SAM mounts
9 Improved guidance systems 1957 N 70 12 Increases missile hit rate

†These technologies appear in the game files, but as of 1.24 cannot be acquired in-game without user modifications. This means that all ship-to-ship missiles and SAMs other than medium launchers cannot be used.

Amphibious Operations (20)

Lv. Tech Year Prolif Chance Cost Effect
0 X-Lighters 1915 Y 70 6 Improves invasion capability
1 Elpidifor boats 1916 Y 70 6 Improves invasion capability
2 Daihatsu barges 1925 Y 70 6 Improves invasion capability
3 Motor Landing Craft 1930 Y 70 8 Improves invasion capability
4 Amphibious tractors 1935 Y 70 10 Improves invasion capability
5 Combat supply loading 1938 N 70 8 Improves invasion capability
6 Higgins boats 1941 Y 70 6 Improves invasion capability
7 Assault landing craft 1942 Y 70 10 Improves invasion capability
8 Specialized landing craft 1943 Y 70 10 Improves invasion capability
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