The Torpedo SEAL is a wet submerible for up to two combat swimmers from James Fisher Defense. It can be transported in a NATO Standard 533mm torpedo tube and has a range of up to 10nm at a maximum speed of 4kts thanks to its onboard lithium polymer batteries.
Yes, that long, diagonal beast in the background is the Torpedo SEAL’s big brother the SEAL Carrier which will deliver a 6-man team up to 30nm.
Above, you can see the controls of the mini-sub.