The deffinition of “1st World, 2nd World, 3rd World”:
https://www.nationsonline.org/oneworld/third_world_countries.htm
It is kind of outdated, since the Cold War ended, don’t you think?
AFAIK there are only ONE world and it is populated by humans of equall value, in whateever currency.
There have been an accident on one of the first USVs operated by Reach Subsea AS:
Lifting of the newbuilding to Reach Subsea when it was delivered. Illustrative photo: Trosvik Maritime
Source: https://www.kystens.no/nyheter/en-person-til-legevakt-vi-bekrefter-at-det-har-vart-en-hendelse/2-1-1850914