The Neptun-class submarine was a Swedish submarine class built by Kockums.

The first submarine was launched in 1942 and a total of three submarines were built: HSwMS Neptun, HSwMS Najad and HSwMS Nacken.

This Sweden-related article is a stub.

You can help Wikipedia by expanding it.This submarine-related article is a stub.

You can help Wikipedia by expanding it.This article about a specific military ship or boat of a European nation is a stub.