U-21 (1936)

pl

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U-21 (1936)

Quality:

U-21 - 1936 Type IIB submarine. Article “U-21 (1936)” in Polish Wikipedia has 12.3 points for quality (as of July 1, 2025). The article contains 3 references and 4 sections.

This article has the best quality in Chinese Wikipedia. However, the most popular language version of this article is German.

Since the creation of article “U-21 (1936)”, its content was written by 10 registered users of Polish Wikipedia and edited by 156 registered Wikipedia users in all languages.

The article is cited 51 times in Polish Wikipedia and cited 1874 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (Polish): #13389 in April 2022
  • Global: #122019 in April 2013

The highest popularity rank from 2008:

  • Local (Polish): #214082 in May 2024
  • Global: #773190 in March 2012

There are 12 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
1Chinese (zh)
U-21号潜艇 (1936年)
34.3179
2English (en)
German submarine U-21 (1936)
33.1385
3Vietnamese (vi)
U-21 (tàu ngầm Đức) (1936)
32.232
4German (de)
U 21 (U-Boot, 1936)
22.5781
5Russian (ru)
U-21 (1936)
17.7417
6Arabic (ar)
غواصة يو-21 (1936)
13.4172
7Polish (pl)
U-21 (1936)
12.3385
8French (fr)
Unterseeboot 21 (1936)
9.9092
9Serbian (sr)
Немачка подморница У-21
6.4914
10Ukrainian (uk)
U-21 (1936)
5.8702
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 "U-21 (1936)" in all the time
#LanguagePopularity awardRelative popularity
1German (de)
U 21 (U-Boot, 1936)
36 735
2English (en)
German submarine U-21 (1936)
36 678
3Russian (ru)
U-21 (1936)
20 738
4Polish (pl)
U-21 (1936)
11 848
5French (fr)
Unterseeboot 21 (1936)
3 806
6Serbian (sr)
Немачка подморница У-21
2 545
7Slovenian (sl)
U-21 (Kriegsmarine)
1 950
8Ukrainian (uk)
U-21 (1936)
1 308
9Chinese (zh)
U-21号潜艇 (1936年)
1 164
10Persian (fa)
زیردریایی یو-۲۱ (۱۹۳۶)
493
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 "U-21 (1936)" in June 2025
#LanguagePopularity awardRelative popularity
1German (de)
U 21 (U-Boot, 1936)
195
2English (en)
German submarine U-21 (1936)
141
3Russian (ru)
U-21 (1936)
80
4Chinese (zh)
U-21号潜艇 (1936年)
33
5Polish (pl)
U-21 (1936)
32
6French (fr)
Unterseeboot 21 (1936)
25
7Ukrainian (uk)
U-21 (1936)
11
8Arabic (ar)
غواصة يو-21 (1936)
7
9Slovenian (sl)
U-21 (Kriegsmarine)
7
10Persian (fa)
زیردریایی یو-۲۱ (۱۹۳۶)
5
More...

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

The highest AI

Language versions of the article "U-21 (1936)" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1German (de)
U 21 (U-Boot, 1936)
51
2English (en)
German submarine U-21 (1936)
35
3Russian (ru)
U-21 (1936)
16
4French (fr)
Unterseeboot 21 (1936)
15
5Ukrainian (uk)
U-21 (1936)
11
6Polish (pl)
U-21 (1936)
10
7Serbian (sr)
Немачка подморница У-21
7
8Slovenian (sl)
U-21 (Kriegsmarine)
4
9Persian (fa)
زیردریایی یو-۲۱ (۱۹۳۶)
2
10Vietnamese (vi)
U-21 (tàu ngầm Đức) (1936)
2
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 "U-21 (1936)" with the highest AI in June 2025
#LanguageAI awardRelative AI
1German (de)
U 21 (U-Boot, 1936)
1
2Arabic (ar)
غواصة يو-21 (1936)
0
3English (en)
German submarine U-21 (1936)
0
4Persian (fa)
زیردریایی یو-۲۱ (۱۹۳۶)
0
5French (fr)
Unterseeboot 21 (1936)
0
6Polish (pl)
U-21 (1936)
0
7Russian (ru)
U-21 (1936)
0
8Slovenian (sl)
U-21 (Kriegsmarine)
0
9Serbian (sr)
Немачка подморница У-21
0
10Ukrainian (uk)
U-21 (1936)
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 "U-21 (1936)" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1Arabic (ar)
غواصة يو-21 (1936)
1 150
2German (de)
U 21 (U-Boot, 1936)
256
3English (en)
German submarine U-21 (1936)
89
4Ukrainian (uk)
U-21 (1936)
75
5French (fr)
Unterseeboot 21 (1936)
58
6Russian (ru)
U-21 (1936)
57
7Chinese (zh)
U-21号潜艇 (1936年)
57
8Vietnamese (vi)
U-21 (tàu ngầm Đức) (1936)
52
9Polish (pl)
U-21 (1936)
51
10Slovenian (sl)
U-21 (Kriegsmarine)
26
More...

Scores

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

Quality measures

Interwikis

#LanguageValue
arArabic
غواصة يو-21 (1936)
deGerman
U 21 (U-Boot, 1936)
enEnglish
German submarine U-21 (1936)
faPersian
زیردریایی یو-۲۱ (۱۹۳۶)
frFrench
Unterseeboot 21 (1936)
plPolish
U-21 (1936)
ruRussian
U-21 (1936)
slSlovenian
U-21 (Kriegsmarine)
srSerbian
Немачка подморница У-21
ukUkrainian
U-21 (1936)
viVietnamese
U-21 (tàu ngầm Đức) (1936)
zhChinese
U-21号潜艇 (1936年)

Popularity rank trends

Best Rank Polish:
#214082
05.2024
Global:
#773190
03.2012

AI rank trends

Best Rank Polish:
#13389
04.2022
Global:
#122019
04.2013

Languages comparison

Important global interconnections (July 2024 – June 2025)

Cumulative results of quality and popularity of the Wikipedia article

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

News from 16 March 2026

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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