There are some at:
https://elements.carbide3d.com/
and see:
and for the U.S. Navy see:
- USN Masterdiver: Need help creating / editing a picture - #5 by WillAdams
- Nvy logo svg file
- Drew up a rough version of the U.S. Navy Submarine Warfare Insignia
Please post any files which you have difficulty w/ and we’ll do our best to assist.