A glowing blue hologram of a building on a steel structure deep underwater in The Last Caretaker, from the Update 5.5 press kit; it is not Research Outpost Theta-9.
Guides

Quests

The Last Caretaker Twin Jet: How to Get the TideRipper Twin from Still Listening

Short answer: Finish the Still Listening quest at Research Outpost Theta-9, under the sea at about 52, -34 on the map and roughly 200 m down. Bring a Photo Drone, batteries and cable, find the last survivor inside and sample the survivor’s hologram with the drone. The Twin Jet then unlocks as TIDERIPPER TWIN; open the Tools menu (T) to use it, not the build menu.

Game version: Early Access, Update 6; the TideRipper jets came with Update 5.0 (June 24, 2026)

How to Get the Twin Jet

How do you get the Twin Jet?

Finish Still Listening, the quest at Research Outpost Theta-9. When it is done, the Twin Jet unlocks and shows up in the Skills menu as TIDERIPPER TWIN.

Update 5.0 (June 24, 2026) added TideRipper hand jets, a faster way to move through water. The Twin Jet is the version you earn from Still Listening.

See also: quest list

Where is Research Outpost Theta-9?

Research Outpost Theta-9 is under the sea at about 52, -34 on the map. Its way in is deep: the dive readout shows 201 m on the way down, so expect to dive below your safe depth.

See also: interactive map · diving depth and pressure

Still Listening Walkthrough

How does Still Listening start?

You do not take it from anyone. Swim to the outpost and the game says Theta-9 is still broadcasting an emergency survivor flag; the quest then asks you to find a way in, search for the last survivor and sample the survivor’s hologram with a Photo Drone.

What do you need to bring?

A Photo Drone: the last step is to sample a hologram with it, and the quest cannot finish without one.

Also pack batteries for the deep dive and cable to power a terminal inside. Plug the cable into the terminal and switch it on.

See also: Photo Drone and samples · cables and batteries

What are the Still Listening steps?

1. Dive to Research Outpost Theta-9 and find a way in. 2. Search the lower sections for the last survivor. 3. Fly your Photo Drone to the survivor’s hologram and take a sample. Still Listening is done, and the Twin Jet unlocks.

The quest also gives 500 XP and 20 Enhancer Points.

See also: what to spend Enhancer Points on

Using It

I unlocked it. Why is it not in the build menu?

It is a tool, so look in the Tools menu (T), not the build menu or the Fabricator. Once it is there you can put it on your bar.

See also: putting a tool back on your bar

Does the jet have a light?

The TideRipper’s light uses less power than the Eclipse, but it does not drive off leech swarms.

See also: diving lights compared

Official sources and wiki