Type U 81 submarine

en

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Type U 81 submarine

Quality:

Type U 81 submarine - 1916 class of German submarines. Article “Type U 81 submarine” in English Wikipedia has 19.3 points for quality (as of July 1, 2025). The article contains 5 references and 6 sections.

This article has the best quality in Czech Wikipedia. However, this article is the most popular in English version.

Since the creation of article “Type U 81 submarine”, its content was written by 18 registered users of English Wikipedia and edited by 35 registered Wikipedia users in all languages.

The article is cited 118 times in English Wikipedia and cited 223 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (English): #67541 in June 2024
  • Global: #215620 in January 2017

The highest popularity rank from 2008:

  • Local (English): #441335 in April 2015
  • Global: #737911 in April 2015

There are 5 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

Languages with the highest quality

#LanguageQuality gradeQuality score
1Czech (cs)
Třída U 81
21.6453
2English (en)
Type U 81 submarine
19.2853
3Persian (fa)
او-بوت نوع او ۸۱
13.6681
4Arabic (ar)
الغواصة الألمانية فئة يو 81
8.8701
5French (fr)
Unterseeboot type U 81
7.6058
More...

The following table shows the most popular language versions of the article.

Most popular in all the time

The most popular language versions of the article "Type U 81 submarine" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
Type U 81 submarine
35 186
2French (fr)
Unterseeboot type U 81
3 783
3Persian (fa)
او-بوت نوع او ۸۱
2 056
4Czech (cs)
Třída U 81
578
5Arabic (ar)
الغواصة الألمانية فئة يو 81
383
More...

The following table shows the language versions of the article with the highest popularity in the last month.

Most popular in June 2025

The most popular language versions of the article "Type U 81 submarine" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
Type U 81 submarine
165
2French (fr)
Unterseeboot type U 81
14
3Persian (fa)
او-بوت نوع او ۸۱
10
4Arabic (ar)
الغواصة الألمانية فئة يو 81
7
5Czech (cs)
Třída U 81
7
More...

The following table shows the language versions of the article with the highest Authors’ Interest.

The highest AI

Language versions of the article "Type U 81 submarine" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
Type U 81 submarine
18
2French (fr)
Unterseeboot type U 81
12
3Persian (fa)
او-بوت نوع او ۸۱
3
4Arabic (ar)
الغواصة الألمانية فئة يو 81
1
5Czech (cs)
Třída U 81
1
More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

The highest AI in June 2025

Language versions of the article "Type U 81 submarine" with the highest AI in June 2025
#LanguageAI awardRelative AI
1Arabic (ar)
الغواصة الألمانية فئة يو 81
0
2Czech (cs)
Třída U 81
0
3English (en)
Type U 81 submarine
0
4Persian (fa)
او-بوت نوع او ۸۱
0
5French (fr)
Unterseeboot type U 81
0
More...

The following table shows the language versions of the article with the highest number of citations.

The highest CI

Language versions of the article "Type U 81 submarine" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
Type U 81 submarine
118
2French (fr)
Unterseeboot type U 81
92
3Persian (fa)
او-بوت نوع او ۸۱
5
4Arabic (ar)
الغواصة الألمانية فئة يو 81
4
5Czech (cs)
Třída U 81
4
More...

Scores

Estimated value for Wikipedia:
English:
Global:
Popularity in June 2025:
English:
Global:
Popularity in all years:
English:
Global:
Authors in June 2025:
English:
Global:
Registered authors in all years:
English:
Global:
Citations:
English:
Global:

Quality measures

Interwikis

#LanguageValue
arArabic
الغواصة الألمانية فئة يو 81
csCzech
Třída U 81
enEnglish
Type U 81 submarine
faPersian
او-بوت نوع او ۸۱
frFrench
Unterseeboot type U 81

Popularity rank trends

Best Rank English:
#441335
04.2015
Global:
#737911
04.2015

AI rank trends

Best Rank English:
#67541
06.2024
Global:
#215620
01.2017

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on Type U 81 submarine from Wikipedia articles about Type UE I submarine, Type U 87 submarine, List of U-boats of Germany, Type IX submarine and List of U-boat types. Whereas reading the article about Type U 81 submarine people most often go to Wikipedia articles on Type U 87 submarine, Type UE I submarine, SM U-81, Type U 93 submarine and SM U-86.

Cumulative results of quality and popularity of the Wikipedia article

List of Wikipedia articles in different languages (starting with the most popular):

News from 5 March 2026

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In English Wikipedia the most popular articles on that day were: Markwayne Mullin, Kristi Noem, 2026 Iran war, Ali Khamenei, Lou Holtz, Men's T20 World Cup, Iran, IRIS Dena, Corey Lewandowski, Deaths in 2026.

About WikiRank

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information