[Home](/) / [Module](/categories/7-module) / [Projectile Weapon](/groups/55-projectile-weapon) / [1200mm Heavy Prototype Siege Cannon](/types/9377-1200mm-heavy-prototype-siege-cannon)

# 1200mm Heavy Prototype Siege Cannon

## Tools

[Reprocess](/reprocess?type=9377) · [Appraise](/appraise) · Market: [Amarr orders](/market?type=9377&region=10000043); [Amarr regional history](/market?type=9377&region=10000043&tab=history); [Dodixie orders](/market?type=9377&region=10000032); [Dodixie regional history](/market?type=9377&region=10000032&tab=history); [Hek orders](/market?type=9377&region=10000042); [Hek regional history](/market?type=9377&region=10000042&tab=history); [Jita orders](/market?type=9377&region=10000002); [Jita regional history](/market?type=9377&region=10000002&tab=history); [Rens orders](/market?type=9377&region=10000030); [Rens regional history](/market?type=9377&region=10000030&tab=history)

Orders cover the selected hub region. Price history is regional, not station-specific.

## Overview

Market: [Ship Equipment](/market/9-ship-equipment) / [Turrets & Launchers](/market/10-turrets-and-launchers) / [Projectile Turrets](/market/87-projectile-turrets) / [Artillery Cannons](/market/560-artillery-cannons) / [Large](/market/579-large)

Projectile Weapon · Module · Tech I

## Facts

| Fact | Value |
| --- | --- |
| Mass | 2,000 kg |
| Volume | 20 m³ |
| Capacity | 1 m³ |
| Radius | 2,000 m |
| Portion size | 1 |
| Base price | 595,840.00 ISK |
| Published | Yes |


## Prices

| Market | Value |
| --- | --- |
| Jita 4-4 sell minimum | 528,700.00 ISK |
| Jita 4-4 buy maximum | 443,100.00 ISK |
| The Forge sell minimum | 528,700.00 ISK |
| The Forge buy maximum | 443,100.00 ISK |
| Sell volume | 704 |
| Buy volume | 575 |
| Snapshot loaded | 2026-09-13T18:52:01.199Z |
| HTTP last modified | 2026-09-13T18:20:12.000Z |
| Source | snapshot |


[Order book](/types/9377-1200mm-heavy-prototype-siege-cannon/prices) · [Price history](/types/9377-1200mm-heavy-prototype-siege-cannon/history)

## Fitting

| Attribute | Value |
| --- | --- |
| CPU usage | 35 tf |
| Powergrid Usage | 2750 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 | 3 1=small 2=medium 3=l |
| Meta Level | 3 Level |
| Overload rate of fire bonus | -15 % |
| Reload Time | 10 s |
| Required Thermodynamics Level | 1 Level |
| Tech Level | 1 Level |


## Required Skills

| Attribute | Value |
| --- | --- |
| Primary Skill required | 3308 typeID |
| Secondary Skill required | 3300 typeID |


## Turrets

| Attribute | Value |
| --- | --- |
| Damage Modifier | 5.844 x |
| Accuracy falloff | 35000 m |
| Optimal Range | 37030 m |
| Rate of fire | 21.038 s |
| Turret Tracking | 1.125 |


## Heat

| Attribute | Value |
| --- | --- |
| Heat Damage | 2.1 HP |


## Materials

| Reprocessing yield | Quantity |
| --- | --- |
| [Tritanium](/types/34-tritanium) | 40,980 |
| [Pyerite](/types/35-pyerite) | 10,587 |
| [Mexallon](/types/36-mexallon) | 3,876 |
| [Isogen](/types/37-isogen) | 1,032 |
| [Nocxium](/types/38-nocxium) | 146 |
| [Zydrine](/types/39-zydrine) | 4 |
| [Megacyte](/types/40-megacyte) | 11 |


[Reprocessing calculator](/reprocess?type=9377)

## Variations

- [1200mm Artillery Cannon I](/types/497-1200mm-artillery-cannon-i) (Tech I)
- [1200mm Artillery Cannon II](/types/2865-1200mm-artillery-cannon-ii) (Tech II)
- [1200mm Heavy 'Jolt' Artillery I](/types/21559-1200mm-heavy-jolt-artillery-i) (Storyline)
- [1200mm Heavy 'Scout' Artillery I](/types/9367-1200mm-heavy-scout-artillery-i) (Tech I)
- [1200mm Heavy Carbine Howitzer I](/types/9369-1200mm-heavy-carbine-howitzer-i) (Tech I)
- [1200mm Heavy Gallium Cannon](/types/9371-1200mm-heavy-gallium-cannon) (Tech I)
- [Domination 1200mm Artillery](/types/13774-domination-1200mm-artillery) (Faction)
- [Hakim's Modified 1200mm Artillery Cannon](/types/14461-hakims-modified-1200mm-artillery-cannon) (Officer)
- [Republic Fleet 1200mm Artillery](/types/16047-republic-fleet-1200mm-artillery) (Faction)
- [Tobias' Modified 1200mm Artillery Cannon](/types/14463-tobias-modified-1200mm-artillery-cannon) (Officer)

## Formats

Links: [Markdown](/types/9377-1200mm-heavy-prototype-siege-cannon.md) · [JSON](/types/9377-1200mm-heavy-prototype-siege-cannon.json)