U-638

pt

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U-638

Quality:

U-638 - 1942 Type VIIC submarine. Article “U-638” in Portuguese Wikipedia has 21.3 points for quality (as of July 1, 2025). The article contains 8 references and 6 sections.

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

Since the creation of article “U-638”, its content was written by 2 registered users of Portuguese Wikipedia and edited by 47 registered Wikipedia users in all languages.

The article is cited 576 times in Portuguese Wikipedia and cited 4251 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (Portuguese): #33180 in November 2021
  • Global: #226071 in October 2019

The highest popularity rank from 2008:

  • Local (Portuguese): #196137 in December 2023
  • Global: #1283689 in October 2019

There are 8 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
1Arabic (ar)
الغواصة الألمانية يو-638
22.4502
2English (en)
German submarine U-638
21.5441
3Portuguese (pt)
U-638
21.2948
4Ukrainian (uk)
U-638
17.1664
5French (fr)
Unterseeboot 638
16.7898
6Russian (ru)
U-638
7.5947
7Slovenian (sl)
U-638
6.9929
8Persian (fa)
زیردریایی یو-۶۳۸
1.2431
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-638" in all the time
#LanguagePopularity awardRelative popularity
1Russian (ru)
U-638
11 501
2English (en)
German submarine U-638
10 825
3Portuguese (pt)
U-638
1 420
4French (fr)
Unterseeboot 638
882
5Slovenian (sl)
U-638
815
6Arabic (ar)
الغواصة الألمانية يو-638
648
7Ukrainian (uk)
U-638
395
8Persian (fa)
زیردریایی یو-۶۳۸
194
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-638" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
German submarine U-638
71
2Russian (ru)
U-638
18
3Persian (fa)
زیردریایی یو-۶۳۸
12
4Portuguese (pt)
U-638
10
5French (fr)
Unterseeboot 638
6
6Slovenian (sl)
U-638
5
7Ukrainian (uk)
U-638
2
8Arabic (ar)
الغواصة الألمانية يو-638
1
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-638" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
German submarine U-638
16
2French (fr)
Unterseeboot 638
12
3Russian (ru)
U-638
6
4Persian (fa)
زیردریایی یو-۶۳۸
4
5Ukrainian (uk)
U-638
4
6Arabic (ar)
الغواصة الألمانية يو-638
2
7Portuguese (pt)
U-638
2
8Slovenian (sl)
U-638
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 "U-638" with the highest AI in June 2025
#LanguageAI awardRelative AI
1Arabic (ar)
الغواصة الألمانية يو-638
0
2English (en)
German submarine U-638
0
3Persian (fa)
زیردریایی یو-۶۳۸
0
4French (fr)
Unterseeboot 638
0
5Portuguese (pt)
U-638
0
6Russian (ru)
U-638
0
7Slovenian (sl)
U-638
0
8Ukrainian (uk)
U-638
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-638" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
German submarine U-638
772
2French (fr)
Unterseeboot 638
711
3Arabic (ar)
الغواصة الألمانية يو-638
658
4Ukrainian (uk)
U-638
652
5Slovenian (sl)
U-638
587
6Portuguese (pt)
U-638
576
7Russian (ru)
U-638
294
8Persian (fa)
زیردریایی یو-۶۳۸
1
More...

Scores

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

Quality measures

Interwikis

#LanguageValue
arArabic
الغواصة الألمانية يو-638
enEnglish
German submarine U-638
faPersian
زیردریایی یو-۶۳۸
frFrench
Unterseeboot 638
ptPortuguese
U-638
ruRussian
U-638
slSlovenian
U-638
ukUkrainian
U-638

Popularity rank trends

Best Rank Portuguese:
#196137
12.2023
Global:
#1283689
10.2019

AI rank trends

Best Rank Portuguese:
#33180
11.2021
Global:
#226071
10.2019

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):

ru: U-638
pt: U-638
sl: U-638
uk: U-638

News from 10 March 2026

On 10 March 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: Iran, Mojtaba Khamenei, Enhypen, Ali Khamenei, Strait of Hormuz, Jeffrey Epstein, 2026 Iran war, 2026 World Baseball Classic, Donald Trump, World Baseball Classic.

In Portuguese Wikipedia the most popular articles on that day were: Roger Machado, Daniel Vorcaro, Fotos dos Mamonas Assassinas mortos, António José Seguro, Heeseung, Enhypen, Andrew Tate, Jeffrey Epstein, Assassinatos de Liana Friedenbach e Felipe Caffé, Margarida Maldonado Freitas.

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