3 ms·
It's at least used for snorkeling diesel submarines. https://en.wikipedia.org/wiki/Prairie-Masker https://en.wikipedia.org/wiki/Prairie-Masker
by piyh 3y ago
It's at least used for snorkeling diesel submarines.
https://en.wikipedia.org/wiki/Prairie-Masker https://en.wikipedia.org/wiki/Prairie-Masker