Fluid module (S)

The Fluid module (S) is the small Cargo Dock module used for fluid cargo in outpost logistics. After construction, its cargo type must be selected in the module UI, and the available choices depend on which fluid-producing outposts have been discovered and repaired. In practice, it is used to connect Cargo Ships to outposts such as the Oil Rig and the Groundwater Well.

Fluid modules can be mixed and matched with other module types on the same Cargo Dock, and even adjacent modules can be assigned different cargo types. However, modules that share a Cargo Dock are often built in identical pairs or groups to keep Cargo ship management simple. If a ship is not fully unloaded, it waits until all cargo types in the dock are cleared before departing, so mixing module types can leave the ship idle while it waits for a slow-moving cargo stream to empty, reducing throughput for the more active resource.

In terms of throughput, a small Cargo Module downloads at an average rate of 32.1 units per 60 seconds. Compared with outpost extraction rates, this gives the following practical limits:

• Oil Rig output: 12 units per 60 seconds per shift
  • One Fluid module (S) can continuously outpace a 1-shift outpost at 37.4% duty cycle
  • One Fluid module (S) can continuously outpace a 2-shift outpost at 74.8% duty cycle
  • Two Fluid module (S) modules can continuously outpace a 3-shift outpost at 56.1% duty cycle
• Groundwater Well output: 48 units per 60 seconds per shift
  • Two Fluid module (S) modules can continuously outpace a 1-shift outpost at 74.8% duty cycle
  • Three Fluid module (S) modules can continuously outpace a 2-shift outpost at 99.7% duty cycle
  • Four Fluid module (S) modules can continuously outpace a 3-shift outpost at 89.2% duty cycle

This makes the small fluid module a useful sizing benchmark when planning outpost shipping capacity. For low-output oil extraction, a single module is often enough unless the outpost runs multiple shifts. For groundwater, more modules are required, especially when the outpost is staffed continuously.