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Being rammed by larger ships since 1914
Author(s) Site Founders: Filthy, Jay, Spud
Status Online
Launch date June 12, 2009
Genre Adult, Imageboard, Furry
Web MA

U-18Chan, sometimes spelled as U-18chan, is a mature furry imageboard hosted in Europe.


Its name is derived from the WWII era German Kriegsmarine’s U-boat submarine, the SM U-18.[1]


The site boards are split into five categories: Furry Related, The Basement, General, Indices, and Misc.

Furry Related[edit]

The Basement[edit]




The lounge board is a board for general chatting and random threads, while the discussion board is for discussions, debates, or arguments.

The most popular of the furry boards is Gay Furry Comics, with double the number of threads of any other site's board.[citation needed]

The Indices section simply links to the catalogs of the first five boards in Furry Related.


U-18Chan's first mascot, a cat wearing a WWII German Schutzstaffel's (SS) uniform, was taken from the German imageboard Krautchan.

The site's current mascot, Valkyria, a sergal also sporting a SS uniform, was drawn by Yuuri and then named Valkyria through a competition held by Jay. Further drawings of Valkyria have been done by SpazzyKoneko including different versions for each holiday so far.

Every drawing of the current mascot is hosted in full resolution on Valkyria's special page.

Site issues[edit]

Software switch[edit]

Due to the limitations of Kusaba X, U-18Chan was forced to switch over to the more efficient ImageBoard4Free software, which was provided to U-18Chan by Infinitus of ib4f.com.

It successfully switched to ImageBoard4Free during the Summer of 2011,[2]clearing up some of the bugs created during the switch.

With the departure of the sole coder,[who?][when?] there has been no further progress on installing new/updated software.[3]


On or before July 8, 2016, the site's user access was limited to the main page, where it displayed the following message:

Hello fellow users, we have unfortunately experienced a catastrophic failure at our datacenter we host at. As such we are working to recover the site as best we can with limited resources, we hope to see you all soon.

-Sincerely LeonFox."[4]



On or before 2016 September 14, an online announcement (with an incorrect date of "24/09/12") was posted on the website that something had happened at the host site that U18 used, resulting in the loss of data. Leonfox wrote that U18chan:

(Has) moved to a new datacenter on hardware we own instead of renting. This way we have full say and control over the server and the drives in it. We are also implementing a 3rd party cloud storage service to be used for offsite backups of our content.


Toward the end of August 2023, the site experienced another issue with their host server that caused it to go down. After two weeks, the website featured a message stating:

Ayy, if you can see this the site is up. All boards are password protected for now while we work on debugging the remaining issue". As a result, a temporary login was put in place for all boards until the site can return to normal.

Still, by November 2023, the site was non-functional due to an ID7 Error,[clarify] forcing users to use image hosting links.[clarify]


The site was down as of January 3, 2024, due to internal user vandalism[citation needed] (see the 2024 Zalgo/FNaF's site defacement section).


2012 April Fool's Day[edit]

On April 1, 2012, the site's main page had an upside-down announcement that read:

U-18Chan is now hosted in northern Australia. Edit: We have had some reports of the site appearing upside down for some users. This is most likely due to upside-down packets coming from ISPs running outdated firmware. Please contact them and ask about Australian compatibility if you are experiencing this issue.[citation needed]

Obviously, the site had not moved to Australia, but the news post remained on the front page with the April 1st time stamp and upside-down text for the rest of the day.

2024 Zalgo/FNaF's site defacement[edit]

In January 2024, the site became non-functional after users posted walls of Zalgo text (Cursed text) on all boards using Five Nights at Freddy's (FNaF) copypasta imagery.[citation needed]


  1. FAQ page on U-18Chan's website. Retrieved ?.
  2. U-18Chan News post 28/07/11 Things Are About To Get German post on U-18Chan's News page. Retrieved ?.
  3. Thoughts about closing U-18Chan post on [who?]'s Tumblr. Retrieved ?.
  4. u18chan.com's main page's July 8, 2016 message display. Retrieved February 9, 2017. Archived July 8 2016 via the Internet Wayback Machine.

External links[edit]

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