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r/submarines↗

Run Silent, Run Deep

Subreddit for everything Submarines!!!

286k subscribers192 posts / mo in Sep 2026114 authors / mosince 2010

r/submarines has 286k members (+2.1% over the last 12 months). It gets about 192 posts a month from 114 people. Top topics: Submarine Warfare History, Submarines & Underwater Warfare and German Ships and Submarines.

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Free report

When to post on r/submarines

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Visitors without an account can open 3 subreddit reports a day. The best time to post on r/submarines, removal risk and the rest of the report are one step away.

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Size and growth

How r/submarines has grown

r/submarines

Subscriber growth

Subscribers over time

+2.1%in 12 months · +0.3% in 3 months · +0.1% in 1 month
Oct 2026286k
Growing286k subscribers
Data since Mar 2018Live · through Oct 2026
r/submarines

Monthly activity

Posts, comments and authors per month

−2.5%vs Sep 2025 · +2.8% last 3 months vs the 3 before
Sep 2026192
QuieterPeaked at 445 in Jun 2023
Data through Sep 2026 · October usually lands mid-November

What people talk about

Topics and brands on r/submarines

Top topics

Share of the subreddit's posts

  1. Submarine Warfare History1.1%
  2. Submarines & Underwater Warfare0.5%
  3. German Ships and Submarines0.3%
  4. Navy Ships and Fleets0.2%
  5. Pirate Horror Fiction0.2%

Brands people mention

Most-mentioned brands and sites, last 12 months

  1. Naval News
  2. United States Navy
  3. United States Naval Institute
  4. Wikimedia
  5. DVIDS

The full report

Everything else about r/submarines

Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.

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Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research