No locator beacon. Bolts on the outside.
How meta is it that someone skimped on safety features on a sub designed to visit *the Titanic*, which famously skimped on safety features (like lifeboats) because they figured they wouldn’t need them?
https://www.theverge.com/2023/6/20/23766998/oceangate-titanic-submersible-tour-logitech-f710