B5-BJ2 – Ice Cream Barges – Concrete Ship Constructors (2023)

> It used a combination of pumped brine, and Freon Gas, which is a non-combustible gas, still used today as a refrigerant in air conditioning applications.

Freon (from then) is generally illegal to use today, as it depletes ozone. As a trademark, the name is often applied to newer refrigerants.

There's a (likely apocryphal) story of a Japanese official realizing they'd lost the war when these showed up, as it indicated a level of spare industrial capacity and logistics while Japanese troops were struggling to stay fed at all.

this website is a marvel, the fact that there are over 100 year old concrete ships still floating makes me wonder if there are concrete or nonmetallic ships still being constructed today for secondary purposes like carrying garbage or as bridges