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# 425mm Medium Prototype Automatic Cannon

Market: [Ship Equipment](/market/9-ship-equipment) / [Turrets & Launchers](/market/10-turrets-and-launchers) / [Projectile Turrets](/market/87-projectile-turrets) / [Autocannons](/market/559-autocannons) / [Medium](/market/575-medium)

Projectile Weapon · Module · Tech I

## Facts

| Fact | Value |
| --- | --- |
| Mass | 1,000 kg |
| Volume | 10 m³ |
| Capacity | 1.5 m³ |
| Radius | 20 m |
| Portion size | 1 |
| Base price | 44,740.00 ISK |
| Published | Yes |


## Prices

| Market | Value |
| --- | --- |
| Jita 4-4 sell minimum | 37,460.00 ISK |
| Jita 4-4 buy maximum | 37,220.00 ISK |
| The Forge sell minimum | 37,460.00 ISK |
| The Forge buy maximum | 37,450.00 ISK |
| Sell volume | 2492 |
| Buy volume | 1214 |
| Snapshot loaded | 2026-09-07T23:28:57.108Z |
| HTTP last modified | 2026-09-07T22:50:04.000Z |
| Source | esi |


[Order book](/types/9141-425mm-medium-prototype-automatic-cannon/prices) · [Price history](/types/9141-425mm-medium-prototype-automatic-cannon/history)

## Fitting

| Attribute | Value |
| --- | --- |
| CPU usage | 20 tf |
| Powergrid Usage | 140 MW |


## Structure

| Attribute | Value |
| --- | --- |
| Structure Hitpoints | 40 HP |


## Capacitor

| Attribute | Value |
| --- | --- |
| Activation Cost | 0 GJ |


## Miscellaneous

| Attribute | Value |
| --- | --- |
| Used with (Charge Group) | 83 groupID |
| Charges Per Cycle | 1 |
| Charge size | 2 1=small 2=medium 3=l |
| Meta Level | 3 Level |
| Overload damage bonus | 15 % |
| Reload Time | 10 s |
| Required Thermodynamics Level | 1 Level |
| Tech Level | 1 Level |


## Required Skills

| Attribute | Value |
| --- | --- |
| Primary Skill required | 3305 typeID |
| Secondary Skill required | 3300 typeID |


## Turrets

| Attribute | Value |
| --- | --- |
| Damage Modifier | 3.32145 x |
| Accuracy falloff | 10836 m |
| Optimal Range | 2300 m |
| Rate of fire | 5.456 s |
| Turret Tracking | 33.792 |


## Heat

| Attribute | Value |
| --- | --- |
| Heat Damage | 0.8 HP |


## Materials

| Reprocessing yield | Quantity |
| --- | --- |
| [Tritanium](/types/34-tritanium) | 2,038 |
| [Pyerite](/types/35-pyerite) | 739 |
| [Mexallon](/types/36-mexallon) | 1,086 |


## Variations

- [425mm AutoCannon I](/types/491-425mm-auto-cannon-i) (Tech I)
- [425mm AutoCannon II](/types/2913-425mm-auto-cannon-ii) (Tech II)
- [425mm Medium 'Jolt' Autocannon I](/types/21551-425mm-medium-jolt-autocannon-i) (Storyline)
- [425mm Medium 'Scout' Autocannon I](/types/9135-425mm-medium-scout-autocannon-i) (Tech I)
- [425mm Medium Carbine Repeating Cannon I](/types/9137-425mm-medium-carbine-repeating-cannon-i) (Tech I)
- [425mm Medium Gallium Machine Gun](/types/9139-425mm-medium-gallium-machine-gun) (Tech I)
- [Domination 425mm Autocannon](/types/13782-domination-425mm-autocannon) (Faction)
- [Polarized 425mm AutoCannon](/types/34286-polarized-425mm-auto-cannon) (Tech II)
- [Republic Fleet 425mm Autocannon](/types/16054-republic-fleet-425mm-autocannon) (Faction)
- [Sila's Modified 425mm Autocannon](/types/85011-silas-modified-425mm-autocannon) (Officer)

Links: [Markdown](/types/9141-425mm-medium-prototype-automatic-cannon.md) · [JSON](/types/9141-425mm-medium-prototype-automatic-cannon.json)