FFG171 Mini Aegis 'Changjiang' [NO MOD]

What's this?

The “FFG171 Mini Aegis Class 'Changjiang'” is a fictional missile frigate made to counter S&D DLC AI.
Torpedo-boat sized, destroyer-level firepower.
Solo-ready, co-op friendly, with smart weapons and full system integration.
Handles tough missions like "Improved Conquest Mode."
Well-balanced in firepower, agility, defense, and crew comfort — your ultimate frontline ship.

How is this working?

Specifications & Features

• Mini sized. Length: 31m, Width: 4.75m, Height: 10.25m.
  
• Propulsion: Gas turbine generator + full-electric drive
  
• Speed: 52 kn (cruise), 58 kn (boost)
  
• Fuel: 20,000L; 7h cruise / 5.5h full systems
  
• Thrusters: 4 waterjets with auto-trim & 3-axis stabilizer
  
• Sensors:
  [list]
• PYO’s TWS Radar — 8 km air/surface detection
  
• PYO’s Data Link v3.6 — pathing, autopilot, multi-unit link (40 km)
  
• PYO’s Anti-RF System — detects/jams/signals up to 40 km
  

[*] Weapons:

• 1x 60mm rapid dual-use gun (400 rounds), full-angle, fire control + ballistic correction
  
• 18x FireEye-13 (1–3 km, anti-helo/armor) in 6-cell bow VLS
  
• 10x FireEye-33 (1–5 km, anti-ship/fixed-wing) in 10-cell main VLS
  
• 2x 12.7mm CIWS turrets (4,000 rounds)
  
• 1x 25mm CIWS turret (600 rounds), auto-fire
  
• 48x chaffs, auto-alternating fire
  

[*] Drone Bay: AUV-03 'Sentinel' (electric unarmed version), hangar-stored

[*] Crew (4 seats):

• Captain: HMD + 360° EO + lidar
  
• TWS/MSL Operator: TWS Scope UI
  
• Gunner: stabilized EO fire scope
  
• UAV Operator: HD camera feed
  

[*] Living & Interior:

• Bridge, corridor, 2x crew rooms, kitchen, bath/toilet, medbay, hangar, engine room, VLS bays
  
• AC/heating, desalination shower, bidet toilet, cooking gear, auto lights
  

[*] Damage Control: Auto-pumping, flood map, auto sprinklers, aft hydrant

[*] Other:

• Smart lights, simple weather readout, usable anchor
  
• Easy access layout + full tools
  

[/list]

How to Play

Quick Start

• Flip Generator System and Propulsion System switches to start. No need to wait for full engine warm-up.
  
• Use Cruise or Manual mode to drive. Switch with the Cruise button.
  
• AP Mode: Enable AP + GPS after setting waypoints on the Data Link (WAYP page).
  
• Steering: A/D to turn. Auto-differential enabled.
  
• Anti-collision: Use the overhead switch (captain's seat) to enable LIDAR box warnings.
  

TWS & Missile

• Turn on TWS System and Missile Hatch to arm missiles.
  
• Targets auto-marked (Red = High threat, Yellow = Medium).
  
• Click a target to assign to a fire channel.
  
• Use AE1/AE2 for auto-launch (FE13 only).
  
• To fire manually: Select channel, press MSL FE13 or MSL FE33.
  
• Click again on same fire channel to clear it.
  
• TWS covers full 360°, up to 8 km, and shows target velocity data.
  

Main Gun

• Unlock turret from the turret monitor.
  
• Manual mode: Arrow keys aim.
  
• Lock Heading: Press 6 to fix direction.
  
• Radar Lock: Press 5, then 1 to auto-aim.
  
• Coord Lock: Press 1 to set laser target.
  
• Fire: Spacebar, 400 rounds auto-fed.
  

CIWS

• Fully auto-fire using TWS tracking.
  
• Manually reload each turret via nearby hatch.
  
• Use turret monitor to unlock/reset.
  

UAV System

• Turn on UAV console + UAV.
  
• Match Data Link Key with the ship.
  
• Unlock UAV hardpoint and walk away until stable lift.
  
• Use UAV tab to set WP. Use AL to auto-land.
  
• To store: Fold rotors and reattach UAV to hardpoint via UAV Dock Control Handle handle in hangar.
  

Anti-Radio System

• Turn on from panel bottom.
  
• Wait 5s per scan; signals auto-localized.
  
• Pick signal → inject to Fire Ch A.
  
• Jam by entering ch# and toggling.
  

Damage Control & Living

• Auto-flood pump + temp-based sprinklers.
  
• Fire hose at rear. Red blocks = fire extinguisher inside.
  
• Air-Conditioner: Use AC screen behind captain.
  
• Kitchen, shower, desalination, medbay all usable.
  

Datalink tutorial

PYOs Tactical data link 3.6

Combat Flow Reference

1. Startup & Navigation

• Power on main systems
  
• Set desired cruise/manual/AP mode
  
• Check radar, TWS, sonar, and EW panels
  

2. Pre-Engagement Prep

• Enable TWS & open VLS doors
  
• Power on CIWS, main gun radar if needed
  
• Ready UAV for launch if recon needed
  
• Activate AutoDefend (AE1/AE2) in high-risk zones
  

3. Recon / Target Acquisition

• Launch UAV to scout coastline deep in land.
  
• Scan via TWS (8 km range)
  
• Check sonar & Anti-Radio monitors for submarine/signal threats
  
• Confirm target type before assigning to missile/gun channels
  

4. Engagement

• Assign targets to Fire Ch
  
• Fire missiles manually or auto with AE1/2
  
• Use main gun for static or slow-moving threats
  
• CIWS handles close targets automatically
  

5. Post-Fire Assessment

• Clear used fire channels
  
• Re-evaluate radar & TWS screen
  
• If under threat: deploy chaff, jam radios, or fire main gun
  

6. Retreat / Reset

• Land UAV (AL), reload CIWS if safe
  
• Resupply or RTB if low on ammo
  
• Prepare for next sortie or patrol cycle
  

Known Issue

• Sonar system is still WIP.
  
• Engine noise very very loud.
  

Special thanks

Mr.ming for accuracy correction data.
FN-20 for Euler calculation.
foggy24, Clever Vision Miner,V.S.C for help with testing.

Thank you!

That's almost all. If you have any suggestions or found any bugs, tell me please.
Hope you all enjoy it.