Magic Number Nine
It was Kraken Sonar who gave the team their ThunderFish. It was this submarine drone that took the first fateful pictures of the prototypes.
“Back in the 1950s, there was no computer modeling to see how they’d fly, so the designers had to use a physical model,” Karl Kenny, also from Kraken Sonar, added. “Then, it went back to the engineers for fine-tuning. The ninth model is the Holy Grail. They had it perfected.”