Oceanic Battleship

YOU SUNK MY BATTLESHIP!

40k ain't a universe known for its ocean-going navy. Like most of Sci-Fi, the wet navies have often been regulated into the dustbin of obscurity, overshadowed, by their cousins in space, even though space is its own unique environment and spaceships should not act like some lazy-ass analogue of the sea-clogged depths. Ignoring an entire branch of the armed forces is, as you can imagine, quite dumb as the ACTUAL navy provides a strategic niche that neither land, air and space power could do. At bare minimum you’d expect to see them in PDF forces to provide defense coverage on planets with large oceans, but a lot of the time most planets you see in Sci-Fi are mono-biome planets and oceans tend to be an afterthought.

This range from assaulting beachheads, to blockading geostrategic choke points and cutting off underwater communication cables. Just ask the Armageddon Steel Legion who learned it the hard way during the Third War of Armageddon, when an entire fleet of Ork Submersibles did a surprise buttsex invasion from the opposite end of the continent. Turns out if you wanna do combined arms properly, you better not forget your fucking sea assets, am I right?

Currently, both the Imperium and Chaos have one known seaborne vessel. The canonicity of which is a bit clouded, given the fact that these are essentially a GW collab with World of Warships, with both ships based on the World War II-era Japanese Amagi-Class Battlecruiser. As such, any stats and schematics on these ships would be based on that cruiser. Which is dumb because that would mean modern day Patrol Boats or drones armed with HEAT/HEASH missiles could sink them. Something along the lines of the Ohio SSGN or Guided Missile cruisers (Ticonderoga or Kirov) would make much more sense. Rather than basing their surface vessels on WWII rust buckets. But than again, this is the same universe where tanks designed for WW1 is pressed into duty, so I guess in the end it still fits aesthetically.

A seabourne Navy does appear in the fluff a few times, and both times it was under the purview of the Imperial Guard. A few regiments have been noted to be - gasp - ACTUAL marine regiments, typically crewing and fighting from their vessels in question. The ships ranged from small river trawlers, to huge command carriers and bombardment platforms. And by huge, we mean imagine the big battleships of World War II but scale them up so those guns are titan weapons.

Class

Basic

Ignis Purgatio

Who knew the Imperium actually gave a shit to their seaborne vessels.

The Ignis Purgatio-Class Oceanic Battleship is a type of Oceanic Battleship of the seaborne Imperial Navy. It is commanded by Justinian Lyons XIII. He is currently engaged in battle with Arthas Roqthar the Cold, the Khorne commander of the Oceanic Battleship Ragnarok. As part of the maritime division of the Imperial Navy, they are crewed similarly to their spaceborne counterparts, just on a smaller scale. Apart from the lack of Voidsmen-at-Arms due to the different environment, it is likely they are protected by members of the Militarum Tempestus, as the Imperial Guard would have little say due to the legal conventions following the breakup of the Imperial Army. The Ignis' main armament consists of a battery of ten 41 cm (16.1 in) L/45 guns[A 1] guns in five twin-gun turrets.

The secondary battery was to have consisted of sixteen 14 cm (5.5 in) L/50 guns mounted in casemates along the centre of the ship. The guns had a maximum elevation of 25 degrees, which enabled a maximum range of 17.5 km (10.9 mi). Six, 12 cm (4.7 in) L/45 anti-aircraft guns were to have been mounted amidships, along with eight 61 cm (24 in) above-water torpedo tubes.

One unique standout, however, is that the Ignis Purgatio's bow is armored like its spaceborne cousins. This armored Aquila could ram enemy ships with catastrophic effects, damaging the hulls, weapons and causing flooding to the enemies of mankind.

• Length: 251.8m
• Mass: 47 kilotonnes; approx
• Crew: 2,000-3,000 crew; approx
• Acceleration: 30 knots

Ragnarok

More corsair than the Red Corsairs themselves.

The Ragnarok-Class Oceanic Battleship is a type of Oceanic Battleship of the forces of Khorne that is based upon the Ignis Purgatio. It is commanded by Arthas Roqthar, a World Eaters Khornate Aspiring Champion. He is currently engaged in battle with Justinian Lyons XIII, the Imperial Navy commander of the Oceanic Battleship Ignis Purgatio. The Ragnarok bears a similar weapon layout as the Ignis in which its main armament consists of a battery of ten 41 cm (16.1 in) L/45 guns[A 1] guns in five twin-gun turrets.

The secondary battery was to have consisted of sixteen 14 cm (5.5 in) L/50 guns mounted in casemates along the centre of the ship. The guns had a maximum elevation of 25 degrees, which enabled a maximum range of 17.5 km (10.9 mi). Six, 12 cm (4.7 in) L/45 anti-aircraft guns were to have been mounted amidships, along with eight 61 cm (24 in) above-water torpedo tubes.

The major difference, however, is that the Ragnarok bears the head and weapon of a Heldrake; its bow mounts a Baleflamer, which could deter enemy vessels from ramming head on to the Ragnarok as its hellish flames scour the hulls of the opposing ship.

• Length: 251.8m
• Mass: 47 kilotonnes; approx
• Crew: 2,000-3,000 crew; approx
• Acceleration: 30 knots

Vessels of the Imperium of Man
Spaceships
	Space Station	Space Station (The Phalanx - The Rock - Orbital Plate)
	Battleships	Battle-barge - Battleship (Gloriana) - Ark Mechanicus
	Cruisers	Light Cruiser (Imperial Navy - Adeptus Astartes - Adeptus Mechanicus) Cruiser (Imperial Navy - Adeptus Mechanicus) Strike Cruiser - Battlecruiser - Grand Cruiser
	Escorts	Escort (Imperial Navy - Adeptus Astartes)
	Logistics	Imperial Navy Logistic Ships - Adeptus Mechanicus Maintenance Ship
	Dropships	Devourer Dropship - Tetrarch Heavy Lander Space Marine Landing Craft - Galaxy Troop Ship
	Combat Spacecraft	Boarding Torpedo - Fury Interceptor - Faustus Interceptor Shark Assault Boat - Starhawk Bomber
Landships
	Hiveships	Mobile Hiveships
	War Machines	Ordinatus Minoris - Ordinatus Primaris
	Mobile Commands	Leviathan - Capitol Imperialis - Mobile Cathedral
	Logistics	Harvester - Macro-Hauler - Titan Train
	Titans	Warhound Scout Titan - Dire Wolf Heavy Scout Titan - Reaver Battle Titan Warbringer Nemesis Titan - Warlord Battle Titan - Warmaster Heavy Battle Titan Emperor Battle Titan
	Troop Transports	Spartan Assault Tank - Coronus Grav Carrier - Gorgon - Mastodon
	Superheavy Tanks	Typhon Heavy Siege Tank - Cerberus Heavy Tank Destroyer Baneblade - Fellblade - Astraeus
	Subterrenes	Mole - Hellbore
Airships
	Flying Fortress	Storm Eagle - Fire Raptor - Marauder Bomber
	Aerospace Vessels	Orion Gunship - Thunderhawk - Stormbird - Overlord Gunship
Seaships
	Oceanic Battleships	Oceanic Battleship
	Maritime Cruisers	Maritime Cruiser
	Submarines	Harvester Submersible

Vessels of the Traitor Legions
Spaceships
	Space Station	Blackstone Fortress
	Super Battleships	Abyss
	Battleships	Battleship (Gloriana - Planet Killer) - Ark of Omen
	Cruisers	Light Cruiser - Cruiser Heavy Cruiser - Grand Cruiser
	Escorts	Escort
	Others	Silver Tower of Tzeentch
	Combat Spacecraft	Doomfire Bomber - Swiftdeath Fighter
Landships
	Siege Carriers	Siege Carrier
	War Machines	Chaos Harvester - Nurgle Plague Tower - Woe Machine
	Titans	Questor Scout Titan - Slaanesh Subjugator Feral Scout Titan - Ravager Battle Titan Chaos Warlord Titan - Chaos Emperor Titan Skull Reaper
	Troop Transports	Mastodon
	Superheavy Tanks	Baneblade - Fellblade - Plaguereaper Tower of Skulls
Airships
	Flying Fortress	Harbinger
	Aerospace Vessels	Stormbird
Seaships
	Oceanic Battleships	Oceanic Battleship