Modules and upgrades | Game mechanics World of Warships Guide
Last update: 11 May 2016
Each bought ship lacks any upgrades. Sometimes it makes playing such ship very unpleasant. In this chapter the general process of upgrading a newly bought ship is described. Here you will find information on what you should select in first order and what the recommended upgrades for various ship types are. Of course, it will be general advices and it will be a very good idea to think it all over in any specific situation by your own.
When buying upgrades for your ship, you should consider what you need the most. Usually, the best choice will be to buy new hull in first order. It will increase maximum hit points and very frequently also the amount of main artillery, additional artillery and anti-aircraft artillery cannons. In second order you should spend the obtained experience on upgrading the speed and maneuverability of the ship. Only after upgrading that you should invest in additional upgrades like fire control or seeing range. In some cases, especially when you're upgrading a battleship, you should start by increasing fire range. It will be especially crucial in case of American battleships.
Available upgrades
Slot 1 (available for tier I+)
Name | Price | Description | |
 | Main Battery Modification 1 | 125 000 | -20% to the risk of magazine detonation -20% to the risk of the main battery becoming incapacitated -20% to main battery repair time |
 | Torpedo Tubes Modification 1 | 125 000 | -20% to torpedo tube repair time -20% to the risk of torpedo tubes becoming incapacitated |
 | Air Groups Modification 1 | 125 000 | +10% to aircraft gun effectiveness |
 | AA Guns Modification 1 | 125 000 | +20% to AA mount survivability |
 | Secondary Battery Modification 1 | 125 000 | +20% to secondary battery survivability |
Slot 2 (available for tier V+)
Name | Price | Description | |
 | Main Battery Modification 2 | 500 000 | +10% to main battery loading time +15% to the main battery traverse speed |
 | Torpedo Tubes Modification 2 | 500 000 | -10% to torpedo tube repair time +20% to torpedo tube traverse speed |
 | Gun Fire Control System Modification 1 | 500 000 | Increases main battery firing accuracy |
 | Flight Control Modification 1 | 500 000 | Accelerates aircraft servicing |
 | Air Groups Modification 2 | 500 000 | Increases survivability of fighters |
 | AA Guns Modification 2 | 500 000 | +20% to AA mount maximum firing range |
 | Secondary Battery Modification 2 | 500 000 | +20% to secondary battery maximum firing range Increases secondary battery firing accuracy |
Slot 3 (available for tier IX+)
Name | Price | Description | |
 | Main Battery Modification 3 | 3 000 000 | Decreases main battery loading time |
 | Torpedo Tubes Modification 3 | 3 000 000 | Decreases reload time of torpedo tubes |
 | Gun Fire Control System Modification 2 | 3 000 000 | Extends firing range of the main battery |
 | Flight Control Modification 2 | 3 000 000 | Increases aircraft speed |
 | Air Groups Modification 3 | 3 000 000 | Increases survivability of attack aircraft |
 | AA Guns Modification 3 | 3 000 000 | Increases AA effectiveness |
 | Secondary Battery Modification 3 | 3 000 000 | Decreases secondary battery loading time |
Slot 4 (available for tier III+)
Name | Price | Description | |
 | Damage Control System Modification 1 | 250 000 | -3% to the risk of flooding -5% to the risk of fire |
 | Propulsion Modification 1 | 250 000 | -20% to the risk of the engine becoming incapacitated -20% to engine repair time |
 | Steering Gears Modification 1 | 250 000 | -20% to the steering gears repair time -20% to the risk of the steering gears becoming incapacitated |
Slot 5 (available for tier VI+)
Name | Price | Description | |
 | Damage Control System Modification 2 | 1 000 000 | -15% to flooding recovery time -15% to time of fire extinguishing |
 | Propulsion Modification 2 | 1 000 000 | -20% to time for reaching full power |
 | Steering Gears Modification 2 | 1 000 000 | -20% to rudder shift time |
Slot 6 (available for tier VIII+)
Name | Price | Description | |
 | Target Acquisition System Modification 1 | 2 000 000 | +20% to maximum acquisition range |
 | Concealment System Modification 1 | 2 000 000 | -10% to detectability |