Ship:Sejong

Latest revision as of 20:57, 3 July 2026

IX

13,000,000

Sejong — Pan-Asia Tech Tree Tier IX Cruiser.

CL-154 class cruisers were designed in the U.S. as a development of the Atlanta-class cruisers. They featured a larger hull and 5-inch guns. The new gun had a higher rate of fire, longer firing range, and heavier shells. Six ships even received their hull numbers, but construction was canceled due to cuts in the naval budget in 1945. Had they been completed, some of the cruisers might have been transferred to the Republic of Korea Navy, which in the 1950s and 60s acquired 42 warships of various types from the United States.

Pros

Great damage and long range Deepwater torpedoes.
Smoke screen generator available
Good rate of fire for the tier.

Cons

Weak armor plating.
Low main battery range.
HE shells do low damage and have low armor penetration.

Ship Stats

Hull Information

Main Battery

Torpedoes

AA Defense

Compatible Upgrades

Slot 1
Slot 2
Slot 3
Slot 4
Slot 5
Slot 6

Consumables

Slot 1: Damage Control Party  (5.0s action, 60.0s cooldown)
Slot 2: Smoke Generator  (3 charges, 30.0s action, 110.0s cooldown)
Slot 3: Defensive AA Fire  (3 charges, 40.0s action, 80.0s cooldown)
Slot 4: Repair Party  (3 charges, 28.0s action, 80.0s cooldown, 144 hp/s)
Slot 5: Torpedo Reload Booster  (2 charges, 1.0s action, 300.0s cooldown)

Gallery

@@ Line 49: / Line 49: @@
 | style="color:inherit;" | • Turning circle radius (m) || style="color:inherit;" | 670 || style="color:inherit;" | 670
 |-
-| style="color:inherit;" | • Rudder-shift time (sec) || style="color:inherit;" | 14.0 || style="color:inherit;" | 10.0
+| style="color:inherit;" | • Rudder-shift time (sec) || style="color:inherit;" | 10.8 || style="color:inherit;" | 7.7
 |}
 </div>
@@ Line 152: / Line 152: @@
 ! style="background-color:#1a3244; color:#ffffff; font-weight:bold;" | TORPEDO LAUNCHERS !! style="background-color:#1a3244; color:#ffffff; font-weight:bold;" |
 |-
-| style="color:inherit;" | • Number of launchers || style="color:inherit;" | 1
+| style="color:inherit;" | • Number of launchers || style="color:inherit;" | 4x4
 |-
-| style="color:inherit;" | • Torpedo name || style="color:inherit;" | PZPT034
+| style="color:inherit;" | • Torpedo name || style="color:inherit;" | Mk16 mod. 2
 |-
 | style="color:inherit;" | • Reload time (sec) || style="color:inherit;" | 125.0
@@ Line 160: / Line 160: @@
 | style="color:inherit;" | • 180° turn time (sec) || style="color:inherit;" | 7.2
 |-
-| style="color:inherit;" | • Damage || style="color:inherit;" | 50100
+| style="color:inherit;" | • Damage || style="color:inherit;" | 17900
 |-
-| style="color:inherit;" | • Range (km) || style="color:inherit;" | 0.4
+| style="color:inherit;" | • Range (km) || style="color:inherit;" | 12
 |-
 | style="color:inherit;" | • Speed (kt) || style="color:inherit;" | 67
@@ Line 168: / Line 168: @@
 | style="color:inherit;" | • Detectability (km) || style="color:inherit;" | 0.8
 |-
-| style="color:inherit;" | • Flooding chance (%) || style="color:inherit;" | 3.68%
+| style="color:inherit;" | • Flooding chance (%) || style="color:inherit;" | 368%
 |}
 </div>
@@ Line 179: / Line 179: @@
 {| class="wikitable" style="margin:0 0 0.8em 0; width:100%; color:inherit;"
 ! style="background-color:#1a3244; color:#ffffff; font-weight:bold;" | AA ARMAMENT !! style="background-color:#1a3244; color:#ffffff; font-weight:bold;" | MOUNTS × BARRELS
+|-
+| style="color:inherit;" | 127 mm || style="color:inherit;" | 6 × 2
 |-
 | style="color:inherit;" | 40 mm || style="color:inherit;" | 8 × 4
@@ Line 192: / Line 194: @@
 |-
 | style="color:inherit;" | Mid-range || style="color:inherit;" | 210 || style="color:inherit;" | 90% || style="color:inherit;" | 3.5
+|-
+| style="color:inherit;" | Long-range || style="color:inherit;" | 175 || style="color:inherit;" | 90% || style="color:inherit;" | 6.0
+|}
+'''Damage by shell explosions'''
+{| class="wikitable" style="margin:0 0 0.8em 0; width:100%; color:inherit;"
+! style="background-color:#1a3244; color:#ffffff; font-weight:bold;" | EXPLOSIONS / SALVO !! style="background-color:#1a3244; color:#ffffff; font-weight:bold;" | DAMAGE !! style="background-color:#1a3244; color:#ffffff; font-weight:bold;" | HIT CHANCE !! style="background-color:#1a3244; color:#ffffff; font-weight:bold;" | ACTION ZONE (km)
+|-
+| style="color:inherit;" | 10 || style="color:inherit;" | 1750 || style="color:inherit;" | 90% || style="color:inherit;" | 3.5–6.0
 |}
@@ Line 198: / Line 209: @@
 {| class="wikitable" style="margin:0 0 0.8em 0; width:100%; color:inherit;"
 ! style="background-color:#1a3244; color:#ffffff; font-weight:bold;" | AA ARMAMENT !! style="background-color:#1a3244; color:#ffffff; font-weight:bold;" | MOUNTS × BARRELS
+|-
+| style="color:inherit;" | 127 mm || style="color:inherit;" | 6 × 2
 |-
 | style="color:inherit;" | 76 mm || style="color:inherit;" | 8 × 2
@@ Line 211: / Line 224: @@
 |-
 | style="color:inherit;" | Mid-range || style="color:inherit;" | 269.5 || style="color:inherit;" | 90% || style="color:inherit;" | 4.0
+|-
+| style="color:inherit;" | Long-range || style="color:inherit;" | 175 || style="color:inherit;" | 90% || style="color:inherit;" | 6.0
+|}
+'''Damage by shell explosions'''
+{| class="wikitable" style="margin:0 0 0.8em 0; width:100%; color:inherit;"
+! style="background-color:#1a3244; color:#ffffff; font-weight:bold;" | EXPLOSIONS / SALVO !! style="background-color:#1a3244; color:#ffffff; font-weight:bold;" | DAMAGE !! style="background-color:#1a3244; color:#ffffff; font-weight:bold;" | HIT CHANCE !! style="background-color:#1a3244; color:#ffffff; font-weight:bold;" | ACTION ZONE (km)
+|-
+| style="color:inherit;" | 10 || style="color:inherit;" | 1750 || style="color:inherit;" | 90% || style="color:inherit;" | 3.5–6.0
 |}
 </div>
 </div></div></div>
@@ Line 223: / Line 246: @@
 | style="color:inherit;" | • Number of charges || style="color:inherit;" | 2
 |-
-| style="color:inherit;" | • Bombs per charge || style="color:inherit;" | 1
+| style="color:inherit;" | • Bombs per charge || style="color:inherit;" | 12
 |-
 | style="color:inherit;" | • Reload time (sec) || style="color:inherit;" | 40.0

SURVIVABILITY	Sejong (A)	Sejong (B)
• Hit Points	28800	29800
• Torpedo protection damage reduction (%)	4

ARMOR DETAIL
• Belt (mm)	95
• Deck (mm)	16
• Superstructure (mm)	13
• Extremities (mm)	16

MANEUVERABILITY	Sejong (A)	Sejong (B)
• Maximum speed (kt)	33.0	33.0
• Turning circle radius (m)	670	670
• Rudder-shift time (sec)	10.8	7.7

CONCEALMENT	Sejong (A)	Sejong (B)
• Detectability by sea (km)	11.97	11.97
• Detectability by air (km)	7.41	7.41
• Detectability after firing main guns in smoke (km)	5.53
• Detectability by depths (km)	7.41	7.41

MAIN BATTERY	Mk9 mod. 1	Mk9 mod. 2
• Arrangement	6×2 127mm
• Firing range (km)	13.64	15.0
• Reload time (sec)	4.5
• Rate of fire (shots/min)	13.3
• 180° turn time (sec)	4.5

DISPERSION
• Dispersion type	Standard CA/CL dispersion
• Dispersion formula	Dispersion (m) = 6.9 × range(km) + 33
• Sigma	2.05
• Maximum dispersion (m)	127
• Dispersion at 5 km	68
• Dispersion at 10 km	102
• Dispersion at 13.64 km	127

HE SHELL
• Name	127 mm HE Mk.41
• Maximum damage	1800
• Fire chance (%)	9.0%
• Shell velocity (m/s)	808
• Shell weight (kg)	31.75
• Penetration (mm)	21

AP SHELL
• Name	127 mm AP/SC Mk38 Mod 2
• Maximum damage	2100
• Shell velocity (m/s)	808
• Shell weight (kg)	31.75
• Fuse time (sec)	0.01
• Ricochet start (°)	45
• Always ricochet (°)	60
• Normalisation (°)	10
• Arming threshold (mm)	21

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