The discussion compares liquid-filled or liquid-backed protective arrangements used in Italian and Dutch design work. Water transmits underwater blast very differently from air, so the boundary between explosive, liquid, and structure strongly affects where destructive force travels. Oil, water, voids, and bulkheads therefore have to be understood as an interacting protective system rather than interchangeable masses. Pykrete receives a cautious assessment: frozen composite material has intriguing strength, but expansion and cooling requirements could create serious hull-integration problems.
Notable Point · 5:43-7:30
Why liquid layers matter in underwater protection
A comment on water- and oil-backed protection connects underwater blast behavior with Italian, Dutch, and experimental Pykrete concepts.