Source-checkedVehicles & ships

B-71 sub-fortress (Mk2 update)

by FLX · for Barotrauma

An old war submarine of the coalition, heavily armed with fast firing AAA turrets (anti-alien-artillery). As it is an old design the turrets must be manually manned leaving the gunners dangerously…

12KDownloads
3 yr agoLast updated
767 KBFile size
Steam WorkshopSource

About B-71 sub-fortress (Mk2 update)

From Steam Workshop

An old war submarine of the coalition, heavily armed with fast firing AAA turrets (anti-alien-artillery). As it is an old design the turrets must be manually manned leaving the gunners dangerously…

An old war submarine of the coalition, heavily armed with fast firing AAA turrets (anti-alien-artillery). As it is an old design the turrets must be manually manned leaving the gunners dangerously exposed behind thin glazed canopies. In case of emergency the ship is split into 4 sections that can be isolated with blast doors. The power grid is split into 3 independent sub-circuits, the reactor can not fully power everything at once so choices have to be made.

Displacement 19.536 flat-tons Max speed 21km/h Max dive speed 15km/h Armament: - Twin chainguns x3 - Twin railgun x1 - Coilgun x1

--------------------------------------------------------------- Mk2 upgrade changelog: - Front part of the ship redesigned to be closer to the originally intended shape. - Fast firing coilguns replaced by chainguns with regular RoF - Power grid entirely reworked. 3 independent circuits for mobility, gunnery and sustainment - Functional and AI compatible ammo hatch for the railgun. - Optimisation of many elements to be more performance friendly - Know issues: AI don't go around the blast doors when they are shut. Everything else works fine. ---------------------------------------------------------------

DESIGN INTENTIONS: - A sub-aquatic WW2 bomber with powerful but vulnerable ball turrets protecting mainly the rear of the ship and a bombardier/nose turret under the cockpit.

- Realism: ammunition do not magically teleport to the guns, they have to be close. Gunners have to be close to the gun too.

- Aesthetics and Readability: Attention has been payed to lighting and colours while retaining as much vanilla elements as possible. You should rapidly understand the use of each button thanks to lights sounds and labels.

- Challenge: A submarine fun to play with big strengths and weaknesses rather than an average experience.

- Cooperation: I moved away from an all mighty command post that controls everything. The command post itself is split between the captain who handles external threats while the security officer is in charge of internal surveillance. It is more efficient to have gunners and loader as separate roles too.

- Roleplay: Explosives and lethal ammunition are locked to prevent "accidents". Extra IDs are available in the captain's safe for friendly play.

- Interesting engineer role: repairing automatically decaying junction boxes is not fun in my opinion. In this ship the engineer has the possibility to optimize the power grid and fuel consumption and can rapidly access the rear turret. Also guns consume a non neglectable quantity of electricity compared to vanilla subs.

Features : - Turrets have a safety that can be overridden. Prevents you from making holes in your own sub. Remove the safety for AIs - Special hatch for railgun ammunition: load them with explosive, drop them on the floor, open the hatch for fast delivery - Internal safety and surveillance station "big brother" with fire, flood, oxygen level and hull proximity alerts. Internal and external camera arrays (left click to switch camera). - Blastdoors controlled from the command post to isolate the 3 sections of the sub - 3 independant electrical circuits - Automatic recharge mode for batteries and supercapacitors. Avoid overloads in most situations.

- Twin engine with stealth option to keep them under 25% and avoid making noise.

Highlights

From source data

Footprint

A 767 KB download, rated a light load on a server.

Last update

Its author last shipped an update 3 yr ago.

B-71 sub-fortress (Mk2 update) 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
2023-07-11, released 2023-07-11, 767 KB

Game versions by loader

LoaderGame versionsNewest
Workshop

From 1 recorded build of B-71 sub-fortress (Mk2 update).

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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
File size
767 KB

Verified at the source

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

B-71 sub-fortress (Mk2 update), answered

Generated from the mod’s own source data.

Is it free?

Yes. B-71 sub-fortress (Mk2 update) 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 B-71 sub-fortress (Mk2 update) from Steam Workshop and upload it to your Nxeon Barotrauma server in Files.

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Run B-71 sub-fortress (Mk2 update) on a Barotrauma server.

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