Storage Depot
This article is timeless and should be accurate for any version of the game.
The Storage Depot is a world structure designed to store crates, shippable structures, and land vehicles.
Construction
It cannot be built, it is found in certain towns. Its location is indicated by an icon 
on the map.
Reconstruction
A destroyed Storage Depot can be rebuilt with with a Construction Vehicle and 400 Basic Materials 
if the nearby Town Base unlocks the Industry 
upgrade.
You cannot access a storage depot owned by the enemy, it must be destroyed and rebuilt before you can use it.
If it was previously owned by the enemy, rebuilding it will only gives you a quarter of its content and none of its Soldier Supplies crates. If previously owned by your faction, the content from before its destruction will still be there.
Stationary Crane
A Storage Depot always has a Stationary Crane next to it. The crane is not part of the structure, it must be rebuilt separately using a Construction Vehicle and 100 Basic Materials if destroyed.
Use
Its interface can be accessed on foot, from the driver seat of a logistics vehicle, or from the adjacent Stationary Crane by pressing E.
Storage
Its stockpile can store 1000 of each type of item crates, 100 land vehicles of each type and 100 shippable crates of each, 100 shippable structures of each type and 100 shippable crates of each. Only a few types of land vehicles cannot be stored: railway vehicles, Bicycles, Battle Tanks, Super Tanks, and Relic Vehicles.
It also allows players to create their own Reserve Stockpiles and let other players access it by sharing its access code.
You can remotely check the content of every stockpile you have access to of any Storage Depot by opening the map with M and by placing your cursor on their icon , press Tab to cycle through the stockpiles (or Shift to cycle backwards).
The View Stockpile Actions Log button 
lets you view information about recent submissions and retrievals from the stockpile.
When a new war begins, All Storage Depots owned by a faction start with 30 Trucks and various supplies of item crates and shippables in storage to begin early game logistics.
Reserve Stockpiles
Submitting & Retrieving
Crates 
:
Crates of items can be stored in the storage depot stockpile. First, select the desired stockpile in the top right corner. Press right click on the crate in your inventory and select the option "Submit to Stockpile" or "Submit All to stockpile". The latter will submit all crates in your inventory while the former will let you choose how many crates to submit.
Crates can be retrieved by just clicking their icons in the selected stockpile with Left Click, Shift + Left Click (three at a time) (only when in a logistics vehicle or crane), or Right Click > "Retrieve Custom".
Land Vehicles 
:
Land vehicles can be stored in the stockpiles. The vehicle has to be fully repaired (including Tank Armor if applicable) and have an empty inventory for this to work. To store a vehicle, get in the driver seat and open the storage depot menu by pressing E, then click the "Submit Vehicle" button 
.
A vehicle retrieved from the storage depot spawns on the loading area and starts with 5% Diesel fuel.
Shippable Structures 
:
Shippable structures and land vehicles can be submitted to a Storage Depot. They must be packaged, lifted with a crane and placed on the loading area, then after selecting the desired stockpile in the top right corner, simply press the Submit Loading Area Equipment button 
at the bottom. Their inventory and stockpiles must be empty to be stored.
When interacting with the Storage Depot from a crane, the shippable structure on the loading area can be repackaged from the crane by pressing the "Package Loading Area Equipment" button 
in the interface.
The shippable structures retrieved from one of the stockpiles appear on the loading area. They start unpackaged except for Shippable Crates.
Shipping Container:
When a Shipping Container is placed on the loading area with a crane, crates can be transfered in or out. After selecting the desired stockpile in the top right corner, use the right click menu on the crates in the container shown on the bottom left to submit some or all of them to the stockpile. You can also submit them all by pressing the Submit Loading Area Equipment button (pressing a second time will submit the container itself).
You can also retrieve crates from the storage depot stockpiles and transfer them into the container via the same menu with Left Click, Shift + Left Click (three at a time), or Right Click > "Retrieve Custom".
Packing/Unpacking Material Crates
Stacks of Materials can be transformed into crates of materials, and vice versa, via the right click menu while in the storage depot interface if you have enough of them (need 100 Basic Materials for a crate, 20 for Explosive Powder, and Refined Materials, 30 for Heavy Explosive Powder, 1 for Diesel and Petrol).
Unpacking Shippable Crates
Shippable Crates of vehicles or structures can only be unpacked while stored in a Storage Depot or Seaport, transfering their content into one of the stockpiles. In the Storage Depot interface, use Right Click on the desired crate's icon in the stock and select "Unpack into Public Stockpile" or "Unpack into Reserved Stockpile" to delete the shippable crate and transfer its vehicles/structures into the desired stockpile.
Gallery
A Stationary Crane lifting a Leary Snare Trap 127 retrieved from a Storage Depot and about to place it onto a Flatbed Truck
The Storage Depot Interface.
A reservable crate.
A reservable truck, notice the red padlock in the top right.
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