Crazy Ivan

In real, traceable use. Part of the curated seed collection; community review is coming.

Meaning · English

A hard turn in a submarine to clear the baffles and get into position to attack any followers.

Register: slang

Where it’s used: Used American English
Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).

Common questions

What does “Crazy Ivan” mean?

A hard turn in a submarine to clear the baffles and get into position to attack any followers.

Is “Crazy Ivan” formal or informal?

Crazy Ivan is generally slang.