The difference begins with the threat model. Both kinds of vessel have to survive the sea, but a warship is built for combat against people actively trying to defeat its sensors, systems, structure, and crew. That adversarial demand explains why naval trials include violent maneuvers, weapons integration, shock, and combat-system edge cases beyond ordinary commercial acceptance.
Notable Point · 1:04:06-1:04:36
Warship trials must reproduce deliberate human threats
Merchant ships are proved mainly against the hazards of the sea, while warships must also be tested for an environment in which an enemy deliberately increases the danger.