The English version is completed! Please feel free to give feedback if you find any errors. Parts of the current version are untranslated; a full English UI version will be released later.

One wields a colossal blade, shattering the silence of the glacial ocean; the other holds a sharp sword, piercing the darkness of the abyss.
She drags her broken body, falling into chaos and madness; she dons shackles, slumbering in the shadows.
They are swept away by the vortex, forgotten by the world… until your return

278-B "Day Snow" is a lightweight dreadnought developed based on the combat experience of 278-A "Dusk Rain". Its naval positioning has been completely shifted from "core of large-scale naval warfare" to "vanguard for abyss exploration". A large number of redundant designs have been removed from the hull, and a highly integrated system is adapted for Europa abyss exploration missions; meanwhile, the full-ship autonomous control authority of the onboard AI has been revoked, restructuring it from an independent unit capable of fully controlling the entire ship into a tool to assist human crew members.

"It was only after that 'incident' that people realized how ignorant and arrogant they were"

█ This is a T3 Scout Submarine:

█ Main Parameters:

◈ Price: 13,000 marks
◈ Dimensions: 77×20m◈ Cargo Capacity: 44 crates
◈ Horizontal Speed:
Silent Cruise

Standard Cruise

Boost Engine

3.4km/h

29km/h

43km/h

◈ Vertical Speed:

Dive Speed

Ascent Speed

19.5km/h

19km/h

◈ Armor:
All hulls 250, can still stand after floor destruction
█ Compartment Layout:

█ Armament:

◈ 4 Rapid-Fire Lasers: Located at the bow, serving as the main conventional firepower

◈ 2 Railguns: Located at the hull center, for engaging large targets, 16 rounds per gun

◈ 4 Coilguns: Located at the stern, for quickly eliminating small targets

◈ 4 Depth Charges: Located at the central hull bottom, for supplementary firepower

◈ Discharge Coil: Manually triggered electromagnetic coil, covering the entire ship

█ Main Features:

[list]
[*]High-Speed Cooling System: Activated when submarine speed exceeds 25km/h, doubling the fire rate of all turrets

[*]Long-Range Sonar System: Activated at the navigation station in the front of the command room when submarine speed is below 10km/h, performing 13-degree long-range sonar detection
[*]Fixed-Angle Curved Fire: Command the upper railguns to fire a volley at a 30° elevation angle (aiming assist line visible on sonar)

[*]AI Assistance System: Onboard AI provides voice prompts (enemy attack, intrusion, reactor status), turret control assistance (increased turret rotation speed), automatic reactor control (automatic fire suppression) and other auxiliary services.

[*]Silent Cruise: Turns off all lights and sets engine output to minimum, for stealth and ambushes
[*]Backup Power: Manual switch, mainly for maintaining power in emergencies
[*]Emergency Reactor Shutdown: Immediately shuts down the reactor, mainly for handling reactor accidents (best effect when shutting down the reactor and switching to batteries during Silent Cruise)
[*]HD Observation System: Provides 5-position searchlight vision for observation operations and auxiliary lighting
[*]Boost Engine: Activates high-output engine for a short time, Duration: 10s Cooldown: 20s
You’re not going to try spamming it quickly, are you?
[*]Full-Ship Defense Protocol: Enter the key via radio channel to toggle naval guns and sentry guns in key compartments.
Look for the log storing the key on board… you wouldn’t lose it, right?[/list]

◈:Day Snow is ready. Thirty-five years have passed, the conditions are not ideal, but we have no way back.

◈:Understood. But… after being sealed for so long, rebuilt and debugged locally for more than ten years after the Great Collapse, are we really handing her over to them now?

◈:She was sealed before the Great Collapse, hidden away for an entire generation. Her reactivation now is about more than just exploration.

◈:Dusk Rain has wandered for more than thirty years, lost deep in Europa’s glacial ocean… but she will come to us on her own.

◈:Then the final order…?

◈:Encounter is decisive battle. The choice is theirs… only tell them this is a lightweight exploration dreadnought, nothing more.

…It's time to end this.

◈:Understood, I will proceed with the docking as ordered.

◈She waited for more than thirty years, not for patrols, but for the destined meeting. Go.

█ Notes:

This ship is the sister ship of "Dusk Rain", co-created by 233-1 and Nether_Dream. Due to limited technical capacity, some functions may not be perfect. Please provide feedback if any issues are encountered, and the authors will improve them as soon as possible. The full-size player version of "Dusk Rain" has completed the hull and partial functions, but is still in the stage of technical and experience accumulation. Stay tuned.

Special Thanks:
kvr7object — Interior reference
suger阿糖 — Cover design
汤姆叔叔的王桥大教堂 — Hull decoration guidance
红岸七厂保卫科露干事 — Character design guidance
Every group member who offered valuable suggestions — Technical Support
Every reader who has read this far — Moral support
(In no particular order, please inform the authors if anyone is missed,

█ Armament:

◈ 4 Rapid-Fire Lasers: Located at the bow, serving as the main conventional firepower

◈ 2 Railguns: Located at the hull center, for engaging large targets, 16 rounds per gun

◈ 4 Coilguns: Located at the stern, for quickly eliminating small targets

◈ 4 Depth Charges: Located at the central hull bottom, for supplementary firepower

◈ Discharge Coil: Manually triggered electromagnetic coil, covering the entire ship

█ Main Features:

[list]
[*] High-Speed Cooling System: Activated when submarine speed exceeds 25km/h, doubling the fire rate of all turrets

[*] Long-Range Sonar System: Activated at the navigation station in the front of the command room when submarine speed is below 10km/h, performing 13-degree long-range sonar detection

[*] Fixed-Angle Curved Fire: Command the upper railguns to fire a volley at a 30° elevation angle (aiming assist line visible on sonar)

[*] AI Assistance System: Onboard AI provides voice prompts (enemy attack, intrusion, reactor status), turret control assistance (increased turret rotation speed), automatic reactor control (automatic fire suppression) and other auxiliary services.

[*] Silent Cruise: Turns off all lights and sets engine output to minimum, for stealth and ambushes

[*] Backup Power: Manual switch, mainly for maintaining power in emergencies

[*] Emergency Reactor Shutdown: Immediately shuts down the reactor, mainly for handling reactor accidents (best effect when shutting down the reactor and switching to batteries during Silent Cruise)

[*] HD Observation System: Provides 5-position searchlight vision for observation operations and auxiliary lighting

[*] Boost Engine: Activates high-output engine for a short time, Duration: 10s Cooldown: 20s
You’re not going to try spamming it quickly, are you?

[*] Full-Ship Defense Protocol: Enter the key via radio channel to toggl