Naval Technology

[snip]

As of July 1920

Blue is researched
Red is researching
Green is intergreating
Black is unknown/unresearched

Naval Artillery

1885
1895
1900
1902
1907
1911
1915
1921
1928

Naval Propulsion
1895 Baseline(0): Complex Reciprocating Engines, Engine Year 1900
1902 Advanced (+1): Engine year 1905, Max. non-VTE power 5,000 HP/Shaft,
       Direct-drive Turbines
1905 Cutting Edge (+3) Engine year 1909, Max. non-VTE power 12,000 HP/Shaft
1909: Engine year 1912, Max. non-VTE power 20,000 HP/Shaft
1913: Engine year 1916, Max. non-VTE power 35,000 HP/Shaft
1917: Engine year 1920, Max. non-VTE power 40,000 HP/Shaft, Engine year = year laid down.

Miscellaneous propulsion technology:
1900 Underway Recoaling
1906 Oil-firing boilers: Allows bunkers with larger than 10% percentage for oil
1906 Electric Propulsion
1912 Geared Drives
1912 Capital Ship Diesel Engines
1915 Underway Oiling

Battleships and Heavy/Armored Cruisers
1880: Main guns in twin turrets, secondaries in casemate
1890: Mixed main armament or AQY with double turrets+casemates
1904: All-big-gun ship with wing turrets, superfiring turrets (restricted axial firing arcs), improved turret hydraulics, Torpedo Bulkheads
1906: Superfiring turrets (unrestricted firing arcs), triple turrets
1912: Quadruple turrets
1920:  No restriction (high or low) on caliber of turreted guns

Aircraft/Seaplane Carriers
1910: experimental aviation ships; automatically granted upon completion of the 1910 Aircraft (1914 models) tech.
1915: floatplanes; flying-off decks for wheeled aircraft
1918: gunpowder catapults for floatplanes; separate landing and taking-off decks for wheeled aircraft
1922: hydraulic catapults; full length decks for wheeled aircraft; arrestor wires
1926: armored box carrier

Light/Protected Cruiser
1880 Baseline(0): guns in single mounts or casemates, on side/centerline
1900 Advanced(+1): ammunition hoists, deck torpedo armament, superfiring mounts
1910 Cutting Edge (+5): twin gun mounts (require hoists); powered gun mounts; unrestricted weapon armor
1920:  No restriction (high or low) on caliber of turreted guns

Destroyer and TB
1880 Baseline (0): single TTs - max 4, displacement 500t
1904 Advanced (+1):double TTs - max 8, displacement 750t
1908 Cutting Edge (+3): triple TTs - max 12, displacement 1000t
1912: max displacement 1500t
1918: quad TTs, 2000t
1924: quintuple tubes, 2,500t

MTB Tech
1905
1910
1914
1918
1922
1928

Mine Warfare
1890: long stick and Very Slow Forward. Hand detonated mines
1900 Baseline (0): primitive paravanes and dragged booms behind small vessels.  Horn mines.
1908: Advanced (+1): advanced paravanes, active charges. Reliable horn mines, early antenna mines.
1918: Reliable antenna mines.
1922: Unreliable magnetic mines & countermessures.

Naval Artillery Shells
1880 Primitive(-2): Solid shot
1890 Dated (-1): High Explosive
1895 Baseline (0): Semi Armour-Piercing
1905 Advanced (+1): Armour-Piercing
1908 Cutting Edge (+3): Capped shells

ASW
1910: ASW tactics, depth charges
1916: hydrophones, depth charge throwers

Night fighting
1908: basic tactics, searchlight, night scopes
1912: starshell + improved tactics
1918: Illuminating shells with parachute, improved night scopes

Rangefinding, Fire Control and Gunnery
1908: centralized FC, early directors - 12kyd
1912: primitive FC computers -18kyd
1918: Spotting planes, Central director stations, long base-length RF - 24kyd
1930:  Electromechanical FC computers - 30kyd

Radar technology
1905: Advanced (+1): Early Huelsmeyer-type "radar", listening dishes, War tuba's.
1915: Cutting Edge (+3): refined Huelsmeyer-type "radar"
1930: Futuristic (+5): primitive "modern" search RADAR

Armor technology
1880 Cast Iron -20%
1890 Compound -10%
1900 Krupp Cemented 0
1915 All Imp. KC types +10%

1912 Sloped external belts; "All or Nothing" Protective Schemes

Torpedo Technologies
1890 Primitive (-2) : 800m@26kts range, 50kg warhead (-1 dam.), compressed air 0.5t, 16" dia.
1890 Dated (-1): 1200@26, 400@35, 100kg warhead (+0 dam.), compressed air 0.5t, 16"
1899 Baseline (0):3000@26, 1500@30, 100kg warhead(+0 dam.), early wet heater 1t, 18"
1905 Advanced (+1): 5000@26, 2200@35, 100kg warhead, imp. wet heater, 1t, 18"
1908 Cutting Edge (+3): 7000@26, 3000@35, 100kg warhead, imp. wet heater, 1t, 21"
1913: (+5) 15000@26, 10000@30,7000@35, 200kg warhead (+1), 2t, 21"
1918: (+8) 20000@26, 15000@30, 10000@35, 300kg warhead (+2) 3t weight, 24"
1928: (+12)Reliable Oxygen Torpedoes (aka Long Lance Torpedoes, double time tech)

Electric Torpedo Proplusion
1905: 2000@20/1000@30, +0 damage, 2t
1914:  Torpedoes as capable as normal torpedoes at "slow" setting.

Submarines
1900
1905
1910
1915
1920
1925
1930
1935
1940