Use your brain. Imagine it. 80 years ago most ships are still made of wood and are driven by sails.
Um 80 years ago? 1935? Are youuuuuuuu sure?
You might want to look at the kind of ships sunk by U boats in the Battle of the Atlantic a scant 4 years later. Not a lot of wood and sail.
Even the largest ship ever built by that time was tiny by todays standards
Laid down 1937. 65,000 tons displacement. The biggest aircraft carriers today top out at 100,000 tons, which is not enough to make the Yamato look tiny. By any standards ships of that size are very large ships. In fact most cargo ships build today are smaller than that since the Yamato wouldn't fit through the Panama canal. The US battleships of that era were designed to transit the canal of course.
There have been a few modern post panamax ships built. The largest ship ever hit about 650,000 tons displacement at full load (10x the size), but that doesn't exist any more, sadly, and there was only ever one of it. The largest container haulers top out at 250,000 tons displacement. Ships of that size are rare, however and even so a 65,000 ton ship would be considered very large.
The largest ships 80 years ago were comparable to most of the big ships sailing today. In your comparison about military ships, the size increase from 80 years ago is fairly modest.
When it comes to sail, the last ships of the age of sail were the windjammers. They were giants as far as sailing ships went, with steel hulls, 5 masts and a small crew. Production tailed off in 1900 more or less, though some managed to operate profitably on limited routes with non-critical bulk cargo into the 1930s. Mostly though by the 30s they were displaced by steamships.
And planes were still made of wood and driven by propellers
Well sure some of them were (say what you like about the Mozzie, it was a great plane!), but by no means all. The Spitfire first flew 79 years ago and is made of dural.
The equally iconic DC3 also debuted in 1935. Looks kinda metallic to me.
The all-metal Ford Trimotor debuted in 1926 and that wasn't the first all-metal plane.
The all metal Junkers F.13 debuted in 1920---95 years ago and was probably the first all-metal transport plane.
So, you're decades out on the planes and ships. The first successful weather satellite, however flew in 1960---75 years ago this year. By 1970 (65 years ago), there was a whole fleet of satellites, including some in polar orbit giving pretty much complete coverage of the entire planet.