Yes! My dad was Navy UDT during WWII, the first "Seals" so to speak. They were called Frogmen back then. What a great organization. If you can, check out the UDT-Seal Museum which is located in Ft. Pierce Florida. Great history of the UDT and Seals there. Ft. Pierce is where the UDT teams trained during WWII.
If your Father is still alive, thank him for me. If not, he did a great service. Those original “frogmen” had one of the most dangerous jobs at the time with their primitive equipment. I salute him.