100 Days At Sea
Fuel station

How to use the pump jack in 100 Days At Sea

Check the current build menu for Pump Jack, follow only the current in-game prompt, and collect only when a current prompt appears. If the menu, prompt, or output is absent, return to the normal fuel route instead of waiting on an assumed timer. No exact unlock requirement or production timer is published here.

Open official gameSurvival guide

Check the build menu before planning around Pump Jack

Start with the current build menu. The official game description confirms the broad raft-building and survival loop, but it does not publish an exact Pump Jack unlock, recipe, output, or production timer.

  • Look for Pump Jack in the current menu.
  • Read every requirement shown by the live game.
  • Keep the normal fuel route ready when the option is absent.
Diagnose my run
Why this advice is shown
  • Harpoon gathering, raft-base building, structures, defenses, exploration, weapons, and foes. View supporting source

Follow the live Pump Jack prompt

When Pump Jack is available, move to it and follow only the current in-game prompt. Collect only when a current prompt appears; do not turn an older route or a missing prompt into a fixed timer.

  • Read the full live prompt before interacting.
  • Use the action only while the prompt is visible.
  • Leave the station when the prompt disappears.
Use the fuel fallback

Keep Pump Jack inside the normal fuel route

Treat Pump Jack as conditional support for a route that already protects food, storage, repairs, and the return path. Stabilize the raft first, collect only from a live action, then return to the crew's normal fuel check.

  • Protect the raft before waiting at a station.
  • Keep the return path clear.
  • Use the existing fuel route between live interactions.
Diagnose my runUse the fuel fallback

Troubleshoot a missing menu, prompt, or output

Reopen the build menu once and read the current interaction again. If the menu entry, prompt, or output is still absent, return to the normal fuel route. Do not wait on an assumed timer.

  • Menu absent: continue the normal fuel route.
  • Prompt absent: step away and retry only when the live action returns.
  • No output: leave the station and protect the current run.
Survival steps

Use it in game

  1. Check the current build menu for Pump Jack.
  2. Read and follow only the live interaction prompt.
  3. Collect only when the game shows an action.
  4. Return to the normal fuel route when the menu, prompt, or output is absent.
FAQ

Player questions

How do I use the pump jack in 100 Days At Sea?

Check the current build menu for Pump Jack, follow the live interaction, and collect only when the game shows an action. If any of those are absent, use the normal fuel route.

When does it unlock?

No exact requirement is published here; use the current menu as the authority.

How long does production take?

No fixed timer is published here. Wait only for a current interaction prompt, not an assumed schedule.

What if the prompt is missing?

Reopen the live menu once, then return to the normal fuel route when no prompt appears.

What if there is no output?

Do not keep waiting on an assumed timer; use the normal route and recheck only when the live prompt changes.

Related sea logs

Boat Upgrades

Upgrade the raft around the pressure ending the run: structure and storage first, then check the current build menu before relying on Sawmill, Crab Trap, Map Radar, defenses, or later support.

Raft Route

Route your run in bands: grind and craft the raft early, stabilize storage and food by day 10, make day 20 trips solve one problem, make day 50 trips protect supplies, and treat day 100 as a rescue push.

Crab Trap

Crab Trap visibility was observed in the build menu, but recipes and collection behavior can change. Read the current menu and collect only when the live game shows an interaction prompt.

Survival

Survive by turning the starter beach into a working raft route first. Feed loose scrap into the grinder, craft the raft, use the old sack for return trips, secure food, then expand only when fuel and storage are under control.

Companions

Open the current Companion panel and read the live shop text before using Pearls. Compare only the roles shown there, then decide whether the current run needs a Class or Companion choice.