ones ancient ones modern
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poo they look like tornadoes but they are used in submarines I can only give you info on ww2 and after I was on 5 submarines they had a lot of different types of torpedo's their were long ones 20' and alot of shorter ones type in torpedos in the web search and you'll find all you should need
Modern supply chain are different from the traditional channels in that there is more collaboration among the modern ones.
Many early telegraph cables were made of iron wire, but all modern ones are copper.
No. Pakistan has only a few. A couple of them are nuclear, the rest are the conventional ones.
Yes, the early ones did not but the later ones did.
Most modern submarines have one screw (which is the proper term for a propeller). Some of the really big ones have a pair of them, like the Russian submarine Kursk, for example. But the bulk of the designs incorporate a single screw.
the modern-day rods are lighter stronger and less susceptible to breaking than the Chinese ones
The biggest improvement in the new cribs from the old ones is the safety. Over the years, the safety of the cribs have greatly increased.
There are thousands of different glues, and possibly many of the early ones (including super glue) were invented by accident.
As of October 2023, thousands of submarines have been built since their inception, with estimates suggesting around 2,000 to 2,500 submarines constructed globally across various classes and types. The exact number varies as new submarines are commissioned and older ones are decommissioned. Major naval powers like the United States, Russia, and China have produced significant numbers of submarines, both nuclear and diesel-electric. Additionally, many countries have developed their own submarine fleets, contributing to the overall total.