Insurance Code (usually included in commercial codals)
Section 165. When a person insured by a contract of marine insurance has a demand against others for contribution, he may claim the whole loss from the insurer, subrogating him to his own right to contribution. But no such claim can be made upon the insurer after the separation of the interests liable to the contribution, nor when the insured, having the right and opportunity to enforce the contribution from others, has neglected or waived the exercise of that right.