Which compatibility group is never allowed to be carried onboard combatant ships?

Group A is designated for explosives that are high in sensitivity and pose a significant risk to safety due to their potential to detonate under relatively low amounts of shock or heat. Because of this inherent danger, materials in this group are strictly prohibited on combatant ships, where the operational environment may expose these explosives to risks that could lead to catastrophic consequences.

The emphasis on safety in explosive management dictates that certain groups, specifically those with high sensitivity and risk, must be excluded from environments where they cannot be adequately controlled or contained, making Group A a clear choice for exclusion on combatant vessels. Carrying such explosive materials could jeopardize not only the ship but the crew and mission integrity as well. This policy reflects a rigorous approach to risk management in naval operations.