Armed-CV "NIFLHEIM" (EN-CN)

A comprehensive operational guide video for the vessel has been published. It is available on the Bilibili platform under the title "木卫二舰船指南-北极光特装型-尼福尔海姆". Please be advised that accessing the video requires a connection to the Chinese internet.The platform auto-generates EN subs for the video, so no need to worry about the language barrier! We've got you covered! :)

---

Europa Coalition Navy Confidential Document

Project Code: Glacial Breach File Number: ECN-ARC-0921 Classification Level: Ⅲ Distribution Scope: MNIIA / Vernyy Shipyard / Coalition Navy Pozhar Fleet

---

Ⅰ. Research Background

As humanity's understanding of the "Abyssal Ocean" region on this ice - covered satellite deepens, targeted detection missions have entered the substantive implementation stage. Existing military submarine platforms are limited by the operational requirements of narrow waterways and cannot meet the dual demands of deep - diving performance and comprehensive operational capabilities in open waters. To fill this technological gap, the Aurora Borealis Type-Abyssus

• Purpose Deep - Diving Combat Platform (modified based on the Aurora Borealis Ⅱ prototype) has been developed. This project is fully led by the MNIIA in terms of technical verification, scheme design, and sea trial testing. The Vernyy Shipyard is responsible for the construction work, serving as the pioneer equipment for the Coalition Navy to carry out reconnaissance and research missions in the Abyssal Ocean.

---

Ⅱ. Performance Parameters

2.1 Basic Platform Parameters -Dimensions --Overall Length: 48.1m (pressure - resistant section: 40.7m) --Overall Width: 11.8m (pressure - resistant section: 8.4m) --Overall Height: 14.3m (pressure - resistant section: 9.8m) -Power System -Main Propulsion Unit: 20MW - class nuclear fission reactor (authorized overload operation mode) -Speed Indicators --Cruising Speed: 27.5km/h --Overload Maximum Speed: 33.5km/h (horizontal axis) --Diving Maximum Speed: 26.1km/h (vertical axis) --Comprehensive Maneuvering Maximum Speed: 42.4km/h (vector synthesis) 2.2 Combat Configuration -Weapon System --Secondary Weapon Module: 5 × single - mounted electromagnetic turrets (integrated fire control system + AI automatic control unit) --Main Weapon Module: ---2 × single - mounted large - caliber railguns (equipped with integrated fire control terminals) ---1 × light main gun (focused laser)

-Defense System: All - around automatic interception coil array -Protection Standards --Hull Shell: Coalition standard naval steel (200mm equivalent RHAT protection) --Core Compartment: Composite armor ( 400mm equivalent RHAT protection) 2.3 Auxiliary Systems -Damage Control Configuration --Drainage System: Each compartment is equipped with 1 light - duty water pump and 2 intelligent anti - backflow drainage outlets as standard. -Aviation Combat Unit --Carrier - based Aircraft: 2 Phelan heavy fighters --Basic Armament: 2 small - caliber Vulcan cannon --Maximum Payload: 3 depth charges --Combat Radius: 20km (standard payload state)

---

Ⅲ. Operation Guide

3.1 Threat Response and Safety Regulations -Enemy Situation Handling: When the sonar detects an unknown target, it is forbidden to use the crew lounge as a bunker. Structural assessment confirms that this area is the compartment with the lowest protection level of the entire submarine (protection coefficient ≤ 0.6).

-Warning for Extra - vehicular Operations: The interception coil current and friendly fire have no friend - or - foe identification mechanism. During operations, a safe distance must be maintained from hostile targets.

3.2 Power System Operation -Reactor Management --Fuel Rod Restriction: The number of fuel rods inserted at a single time must not exceed 3 to prevent overheating of the reactor core. --Parameter Calibration Requirements: After the reactor is enhanced through skills/levels, the distribution box threshold must be updated immediately according to the new parameters. --Technical Note: The skill bonus and level bonus (3% per level) have a multiplicative relationship. Failure to update in a timely manner will result in excessive turbine output power. -Overload Mode Control --Deactivation Restriction: The deactivation operation can only be performed when the submarine is in a completely stationary state (speed ≤ 0 knots). --Safety Warning: Forced deactivation during movement will trigger a Level Ⅲ Fire Risk and activate the emergency response of the damage control system. 3.3 Core System Operation Procedures -Navigation Terminal Interaction --Operable Elements: Automatic turret switch (blue gear icon), reactor emergency shutdown (blue radioactive icon). -Carrier - based Aircraft Control System (Periscope Interface) --Basic Commands: A single click triggers the docking procedure, and a double click on the touch screen switches to hover mode. --Advanced Functions: The side lever starts 50m radius automatic cruise. To drop bombs, the safety lever must be released first, and a long press for ≥ 1.5 seconds completes the release. -Monitoring and Compartment Management --Camera Switching: Position the cursor in the lower half of the screen → move vertically upward to just above the imager to complete the switch. --Ballast Tank ATD Device (Semi - automatic Anti - Thalamus Device): Switch the state by a single click on the periscope trigger. After activation, it automatically executes the water pump startup + regional power outage procedure. --Operation Note: After the system is started, personnel still need to handle the parasitic threat on site . -Compartment Access Regulations --Hangar Area: The roller shutter door is a material storage unit, only the cabin bottom hydraulic door has opening and closing functions, and the main cabin door has no opening procedure. --Fore Airlock Entry Process: Make full - body contact with the pressure panel → remain stationary for 3 ± 0.5 seconds.

---

*Supervising Unit: Equipment Department of the Europa Coalition Navy Technical Review: MNIIA

Unauthorized reproduction or dissemination violates coalition military secrecy act chapter 3, article 17.*

---

Author's Note

You can find the aforementioned files in the safe under the navigation terminal and read them at any time. If you have any questions or suggestions, feel free to leave them in the comments—I’ll respond as soon as I can.
Drawing inspiration from the iconic Hiigaran Carrier of Homeworld 2, as well as the profiles of modern surface ships and submarines. Everyone is welcome to edit and publish revised versions.