Hedgehog

Rarity: Common

The most frequent rarity: most Wikipedia articles become Commons.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

Class

Invention

Domain

Science and technology

Knowledge cost

3

In collections

Nobody has pulled it yet.

What Wikipedia says

The Hedgehog (also known as an Anti-Submarine Projector) was a forward-throwing anti-submarine mortar that was used primarily during the Second World War. The device, which was developed by the Royal Navy, fired up to 24 spigot mortars ahead of a ship when attacking a U-boat.

Excerpt from the Wikipedia article “Hedgehog (weapon)”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Royal Navy official photographer, Public domain, via Wikimedia Commons.