J'ai trouvé ça :
SOME OF THE ADDITIONNAL POLICIES LIKE UPGRADE OR CARGO INSURANCE will be rated based on risk levels. Risk level 1 being the safest systems and risk level 5 being the most dangerous system that is insurable for cargo or upgrades. Any risk level over 5 is un-insurable. A risk 3 policy for cargo will cover you for all cargo losses in a risk 3 system or below. The higher the risk level of the policy the more it will cost. As with the base insurance this will not be crippling financially but instead be a reasonable running cost that relates to the risk / reward profile of the systems flown.
Pour moi ça veut dire que ça ne concerne pas la hull insurance.
Source :
https://robertsspaceindustries.com/comm-link/transmission/12820-Insurance-FAQ-And-Update