JFD's submersible SEAL carrier

U.S. Navy SEALS Insane Powerboat Submarine
VEXR

You spend enough time watching YouTube Shorts and eventually something totally unexpected pops up. I see reports of new drones (land, sea and air), armored troop carriers, artillery and tanks everyday. I've seen reports of submarines carrying James Bond like mini-subs, but this is the first time I've seen this thing. It also has a baby brother:

JFD Shadow Seal & Carrier Seal JFD

That business of 'taking too long to pressurize' in the first video doesn't make much sense. Making a hull that would be able to withstand even a little pressure would be about ten times as difficult and would at least double the weight making it much more expensive and difficult to transport.

JFD is based in the UK, their headquarters are just outside of Glasgow, Scotland.