Metal Maiden Depot, a Metal Waltz database

Last updated : 2025-09-11 00:16:50
Profile updated to game version : 1.9.8.12

{{Infobox_Metal_Maiden_Profile
 | model                                        = Akv 151
 | name                                                = Mary Fredrickson
 | character_portrait_image                        = Akv 151.png
 | rarity                                        = gold
 | type                                                = spg
 | nation                                        = Sweden
 | character_voice                                = 
 | live2d                                        = 0
}}

==Quote==
{| class="wikitable"
 ! From
 ! Quote
 |-
 | Intro
 | Hi~ You are the Commander, right? Merry Fredrickson reporting in. After receiving the transfer order, I took the earliest flight to come here. Ah~ No need to help me with the suitcase~ There are some "personal items" inside, you probably can't lift it up...


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|}

==Attributes==
{{Infobox_Metal_Maiden_Statistics
 | firepower                                = 798
 | penetration                                = 304
 | durability                                = 762
 | armor                                = 282
 | targeting                                = 100
 | evasion                                = 90
 | stealth                                = 70
 | detection                                = 40
 | range_min                                = 8 090
 | range_max                                = 8 090
 | fire_resist                                = C
 | crit_resist                                = A
 | crit_defense                                = C
}}
{{Infobox_Metal_Maiden_Lifestyle
 |skill_1                        = nursing
 |skill_1_level                        = 2
 |skill_2                        = artistry
 |skill_2_level                        = 2
 |skill_3                        = 
 |skill_3_level                        = 
}}
{{Infobox_Metal_Maiden_Equipment
 | max_rank                        = 3
 | slot_1                        = turret
 | slot_2                        = mod
 | slot_3                        = mod
 | slot_4                        = external
 | slot_5                        = internal
 | slot_6                        = carriage
 | slot_7                        = special
 | slot_8                        = raid_carriage
 | ap                                = 0
 | apcr                                = 0
 | apds                                = 0
 | he                                = 1
 | heat                                = 0
 | hesh                                = 0
 | rp                                = 0
 | c_proof                        = 0
 | d_proof                        = 0
 | h_proof                        = 1
 | s_proof                        = 0
 | w_proof                        = 0
 | silent                        = 1
 | armor                        = light
 | angled                        = 0
 | flat-top                        = 0
 | front                        = 1
 | light                        = 1
 | low                        = 0
 | rear                        = 1
 | sloped                        = 1
 | tires                        = 0
 | treads                        = 1
}}

==Requirements==
<tabber>
</tabber>

==Technology==

==Illustration==


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		{| class="mw-collapsible mw-collapsed wikitable"
		! Full illustration
		|-
		| [[File:Akv 151_full.png]]
		|}

{{Infobox_Metal_Maiden_Statistics
 | firepower                                = 798
 | penetration                                = 304
 | durability                                = 762
 | armor                                = 282
 | targeting                                = 100
 | evasion                                = 90
 | stealth                                = 70
 | detection                                = 40
 | range_min                                = 8 090
 | range_max                                = 8 090
 | fire_resist                                = C
 | crit_resist                                = A
 | crit_defense                                = C
}}

	Akv 151
	Mary Fredrickson

Unlocks

Nothing


Category	Self-Propelled Gun
Armor	Light
Nation	Sweden
Rarity	Gold
Blueprint Rank	N5+
Live2D	Not available

Talents

	Nursing	2
	Artistry	2

Basic equipment slots

Additionnal Raid slots

Additionnal Fate slots
Unknown

Shells

[HE] High-Explosive

Attributes :

value at level 1
+ increase per level
value at level 99

Attribute's icon

Attribute's name
Rank in SPG category for this attribute (97 vehicles in this category)
Click here to see rankings
Δ ± deviation from the median value for this attribute at level 99

798
+23.92
3141

Firepower
Ranked 9
Δ +371

304
+9.10
1195

Penetration
Ranked 15
Δ +153

100

Targeting
Ranked 13
Δ +0

762
+22.71
2987

Durability
Ranked 11
Δ +407

282
+7.71
1037

Armor
Ranked 6
Δ +239

Evasion
Ranked 12
Δ +15

Stealth
Ranked 14
Δ -15

Detection
Ranked 17
Δ -20

C
54

Fire resistance
15 Δ -4

A
70

Critical resistance
10 Δ +2

C
64

Critical defense
14 Δ -12

Active Skills :

Click on skills to show their effects

	Bracket Shot Shelling Skill
1. Startup: Shelling Stage Deals 4312..10164 damage (135% damage), target's range is reduced by 35%

	Continuous Fire CQB Skill
1. Startup: CQB Stage Fire a stream of attacks for 6x5957..X damage (35% damage)

	Pressing Fire Shelling Skill
1. Startup: Shelling Stage Deals 2x4494..10593 damage to target (85% damage)

	Volley Fire Shelling Skill
1. Startup: Shelling Stage Attack 3 targets, dealing 5180..12210 damage (55% damage)

Chassis properties

	Front Immune to [Bushy] terrain effect : [Forest] [Forest] Troughout the battle, Firepower is reduced
	Light Immune to [Rocky] terrain effect : [Rocky] [Rocky] Troughout the battle, Targeting is reduced
	Rear Immune to [Swamp] terrain effect : [Dirt] [Dirt] Troughout the battle, Penetration is reduced
	Sloped Increases ricochet chance for [AP] and [AT] attacks
	Treads Immune to [Snowy] terrain effect : [Snow] [Snow] Troughout the battle, Evasion is reduced

Engine properties

	H proof Immune to [Hot] terrain effect : [Desert] [Desert] Troughout the battle, Fire resistance is drastically reduced
	Silent Immune to [Exposed] terrain effect : [Valley] [Valley] Troughout the battle, Stealth is drastically reduced

Mouseover buff icons to show their properties

Tier 1

Silent HP Engine
Detection icon

Tier 2

Silent HP Engine II
Detection icon

Tier 3

Silent HP Engine III
Detection icon

100

Tier 1

Open-Top Chassis
Durability icon

Tier 1

Sloped Rear-Turret Chassis
Armor icon

335

Tier 2

Open-Top Chassis II
Durability icon

240

115

Tier 2

Sloped Rear-Turret Chassis II
Armor icon

160

1100

Tier 3

Open-Top Chassis III
Durability icon

430

160

190

Tier 3

Sloped Rear-Turret Chassis III
Armor icon

255

1800

150

Tier 1

Light Rolled Riveted Armor
Armor icon

Tier 1

Light Welded Rolled Armor
Armor icon

Tier 1

Light Composite Armor
Armor icon

175

Tier 1

Light Tempered Upgraded Armor
Armor icon

Tier 2

Light Rolled Riveted Armor II
Armor icon

145

Tier 2

Light Welded Rolled Armor II
Armor icon

175

Tier 2

Light Composite Armor II
Armor icon

360

Tier 2

Light Tempered Upgraded Armor II
Armor icon

190

Tier 3

Light Rolled Riveted Armor III
Armor icon

240

115

Tier 3

Light Welded Rolled Armor III
Armor icon

260

Tier 3

Light Tempered Upgraded Armor III
Armor icon

290

100

Tier 3

Light Composite Armor III
Armor icon

540

[HE] High-Explosive

Tier 1	Level 3	HCHE (L) 30075
Range	8090

Tier 1	Level 4	HE-I (L) 45550
Range	8090

Tier 1	Level 6	Concave HE (L) 5607045
Range	8090

Tier 3	Level 1	Concave HCHE-I (L) 1575160110
Range	8090

Tier 3	Level 4	Pod Rapid-fire APHE 840600120
Range	8090

Tier 3	Level 4	Concave Shrapnel HE-F (L) 225535125
Range	8090

Illustration :

Main Illustration

Warning : This is only an approximation and a work-in-progress.

Some metal maidens may have more than one type of engine/chassis and therefore can not accumulate all the bonuses from theirs engines/chassis at the same time.
You also have to take into account the range of the ammo available for your metal maiden for each terrains

Dirt streets

Adequate equipment : 1 out of 3

- Detection
- Critical resistance

Missing: [w proof] [low]

Rocky streets

Adequate equipment : 1 out of 3

- Armor
- Critical resistance

Missing: [w proof] [low] [tires]

Snow streets

Adequate equipment : 1 out of 3

- Damage received
- Critical resistance

Missing: [w proof] [low] [tires] [c proof]

Grass forest

Adequate equipment : 1 out of 1

Missing: [w proof] [low] [tires] [c proof]

Dirt forest

Adequate equipment : 2 out of 3

- Detection

Missing: [w proof] [low] [tires] [c proof]

Rocky forest

Adequate equipment : 2 out of 3

- Armor

Missing: [w proof] [low] [tires] [c proof]

Snow forest

Adequate equipment : 2 out of 3

- Damage received

Missing: [w proof] [low] [tires] [c proof]

Grass hills

Adequate equipment : 0 out of 1

- Evasion

Missing: [w proof] [low] [tires] [c proof] [s proof]

Desert hills

Adequate equipment : 1 out of 3

- Damage received
- Evasion

Missing: [w proof] [low] [tires] [c proof] [s proof] [d proof]