Source-checkedVehicles & ships

Gato DE USS-731 Mantis pack

by Cobalt Helldiver · for Barotrauma

Historically (almost) accurate, very unconventional, complex in its simplicity and absolutely authentic WW2 submarine. A work of passion. Please, take a look at the advertisement paper first!…

1.5KDownloads
11 mo agoLast updated
Steam WorkshopSource

About Gato DE USS-731 Mantis pack

From Steam Workshop

Historically (almost) accurate, very unconventional, complex in its simplicity and absolutely authentic WW2 submarine. A work of passion. Please, take a look at the advertisement paper first!…

Historically (almost) accurate, very unconventional, complex in its simplicity and absolutely authentic WW2 submarine. A work of passion.

Please, take a look at the advertisement paper first!

[i]Relevant highlights from the newsprint's content:

...as far as we've managed to discuss, there's a total of four distinct engines on board, consisting of two main GE's V16 Diesels, one GE's Electric Motor and one auxiliary engine of unknown origin. The sheer power of those beasts combined propells the vessel up to 20 knots, but we've only seen 15-knot gauge present. The driver, although, should be aware of the cavitation, occuring while... ...they say it would be faster to just straight up sink the craft, instead of trying to make it do it on its own. "10 down, 8 up, that's all you gonna get" - was the reply of... ...brilliant boomsticks of theirs, although quite tricky to properly operate them. One loader, one gunner, and in night time even a lighter - that's what the regular 5-inch 25 deck cannon's operating crew should consist of. On the other hand, there are 20mm Oerlikon A-A machineguns, mounted beside them, manageable by a single soldier... ...yes, what are you going to do without them? Just load one, or two, or even three of those into the Torpedo Launcher, flood, then take steady aim, utilizing an Attack Periscope, turn the TDC on, set the bearing (or distance, if you don't want to mess with the periscope), choose the receiver, desired tubes, and - finally... ...oh, how magnificent they do work with the depthkeeping equipment, our dear readers! All those valves, dials, Depth Order Telegraphs - that's just... ...of course, when such type of a submarine is going to be released in free waters, its lockers are loaded tight with all necessary operating manuals, guides, schemes, notes and a lot more stuff to read. In there, you can find such documentations, as... [/i]

In a nutshell:

Custom modded Diesel Engines, Batteries, Refueling Pump, Torpedoes, Torpedo Data Computer, Multimeter Station, a variety of Valves and Levers, 20mm Oerlikon AA Machineguns, 5-inch 25 Deck Cannons, Magnetophone with 13 compositions on it, Video Player with a variety of BW tapes, high range periscope, Doors & Torpedo Tube Hatches, new tools & equipment and... And it's just pretty. Also try not to die, 'cause you will. Certainly. But if you'll manage to bring this submarine to the heart of... Ahem, I mean, at least to the next station - please, take my congratulations. Also you will make Ol'Cobalt proud of his creation. Take care.

P.S. All necessary manuals had been loaded on board, and the most important ones had been copied and placed in the captain's locker. Please, read at least something from it, otherwise... Well... My condolences.

InitialDesu has posted a wonderful video review of the submarine!

https://youtu.be/BgjUbE-7lDo?si=YG0UTE_gDoeTmJec In it he briefly explains the basics of operating the main movement and offensive systems, as well as shows the mission test with 9 half-competent sailors on board versus the hellish difficulty 'killing a monster' mission! Like the video if you'll find it inspiring, helpful or just funny :)

Highlights

From source data

Footprint

Rated a light load on a server.

Last update

Its author last shipped an update 11 mo ago.

Gato DE USS-731 Mantis pack on Nxeon

From our catalogue
One-click install
Not available. One-click install isn't available for this game's mods yet. Download it and upload it to your server in Files.
Server load
light
Smallest plan we suggest
Barotrauma — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
Latest build
2025-11-25, released 2025-11-25

Game versions by loader

LoaderGame versionsNewest
Workshop

From 1 recorded build of Gato DE USS-731 Mantis pack.

Run Gato DE USS-731 Mantis pack on a Barotrauma server

Deploy a server above, then upload the file in Files.

What kind of mod it is

From the catalog
Listed on Steam Workshop as “Workshop”

Vehicles & ships

Cars, boats, aircraft, ships and other things to drive or fly.

Compatibility

Game
Barotrauma

Verified at the source

  • ✓Steam WorkshopOfficial listing, checked 2026-10-10Open ↗
  • ✓AuthorCobalt Helldiver, as published on Steam Workshop
  • ✓LicenseNot published by the sourceFree

Gato DE USS-731 Mantis pack, answered

Generated from the mod’s own source data.

Is it free?

Yes. Gato DE USS-731 Mantis pack is free to download from Steam Workshop.

How do I add it to my Nxeon server?

One-click install isn't available for this game's mods yet. Download Gato DE USS-731 Mantis pack from Steam Workshop and upload it to your Nxeon Barotrauma server in Files.

NxLabs

Run Gato DE USS-731 Mantis pack on a Barotrauma server.

Deploy in about a minute from $4.99 a month, then upload Gato DE USS-731 Mantis pack in Files.