Source-checkedVehicles & ships

[HKB] Pr.309, Kosatka SSN -OBSOLETE-

by S'Aarum · for Barotrauma

Kosatka Class : A relic of the Russian Age. The Kosatka Class nuclear-powered attack submarine (SSN) is what HKB has been known for. The class was built and designed for long patrols across the…

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About [HKB] Pr.309, Kosatka SSN -OBSOLETE-

From Steam Workshop

Kosatka Class : A relic of the Russian Age. The Kosatka Class nuclear-powered attack submarine (SSN) is what HKB has been known for. The class was built and designed for long patrols across the…

Kosatka Class : A relic of the Russian Age.

The Kosatka Class nuclear-powered attack submarine (SSN) is what HKB has been known for. The class was built and designed for long patrols across the European Ridge and Cold Caverns areas, hence its extended and rather spacious crew quarters for a military vessel. Since the end of the "Russian Age" more than 20 years ago, the Kosatka followed a number of refit to keep the design "up-to-date" by featuring improved quieting measures in the style of Old-Earth submarines, modular weapons emplacements and a newly installed LiiRa built 473-B "Korall" battery. It is also important to note that almost all compartiments are on raft mounted frames to help reduce noise transference to the hull. The latest refits of 2222 removed the infamous Ultra-Quiet mode, giving the class a much needed increase in performance. During sea-trials, the Akalon achieved a record breaking 32 knots, outperforming the prior recorded speeds of 29 knots.

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Pr.309 EC-228 "Kosatka" (Ru : Косатка / En : Orca) Laid down in 2195 and commissioned in 2198 at Novokopilovka Shipyards, 12 years after the end of the Archaeological Renaissance, the Kosatka was the first of a six ship batch to provide the Habitat (and now city) with reliable long range patrol vessels. Their success segmented the relations and trust with the European Coalition toward HKB.

I. Specifications :

Role : Attack ( Multi-Purpose ) Displacement : ~680 tons Measurement : Lenght 49,85m, height 13,75m Test depth : 2900 Crush depth : 3500 Price : 7 400 Mk Complement : 9 ( 3 Officers, 6 Enlisted ), 13 (with marine complement) Propulsion : BM-1053A Nuclear Reactor ( 5 000 kWh ), 473-B "Korall" Battery ( Output of 4000 kWh, Input of 2500 kWh, Capacity of 20 000 kWh ), Speed : 32 Kts ( 61 Km/h )

II. Features :

- Spacious crew quarters - Moderate ammunition storage - Intercom system - Emergency Hatch - x5 Weapons hardpoints - Capacity of 36 crates - [spoiler]Livery and details all over the place :)[/spoiler]

III. Weapons systems :

- x2 "Tochka" Chainguns (1 Top aft, 1 bottom fore) - x1 "Chimera" Fast-Firing Coilgun (1 Top fore) - x2 Weapons Hardpoints (1 Top midline, 1 bottom aft) - "Skaal" Discharge coils system

- This is my first submarine, and it has achieve two milestone, one being the very first design i worked on, second being the first one published on the workshop. I hope it will satisfy the players who have chosen to use it. Cheers,

S'Aarum. -

Inspirations : EK series of submarines, H I Sutton's "Covert Shores". Thanks a lot to Lisek for his help on all matter of wiring and components and to Papapanda & Chipmonk for their artworks.

Highlights

From source data

Footprint

Rated a light load on a server.

Last update

Its author last shipped an update 4 yr ago.

[HKB] Pr.309, Kosatka SSN -OBSOLETE- 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
2022-04-21, released 2022-04-21

Game versions by loader

LoaderGame versionsNewest
Workshop

From 1 recorded build of [HKB] Pr.309, Kosatka SSN -OBSOLETE-.

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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

Verified at the source

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

[HKB] Pr.309, Kosatka SSN -OBSOLETE-, answered

Generated from the mod’s own source data.

Is it free?

Yes. [HKB] Pr.309, Kosatka SSN -OBSOLETE- 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 [HKB] Pr.309, Kosatka SSN -OBSOLETE- from Steam Workshop and upload it to your Nxeon Barotrauma server in Files.

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Run [HKB] Pr.309, Kosatka SSN -OBSOLETE- on a Barotrauma server.

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