Possibly from same seed source, but not unreasonable to develop a variation for denser water independently. Noncompressible fluid theory combined with sub propulsion cavitation damping, and a late night Nat’l Geographic episode on shark propulsion might lead an observant engineer down the same path.
Possibly from same seed source, but not unreasonable to develop a variation for denser water independently. Noncompressible fluid theory combined with sub propulsion cavitation damping, and a late night Nat’l Geographic episode on shark propulsion might lead an observant engineer down the same path.