Section 139
SEC. 139. A person insured by a contract of marine insurance may abandon the thing insured, or any particular portion thereof separately valued by the policy, or otherwise separately insured, and recover for a total loss thereof, when the cause of the loss is a peril insured against: If more than three-fourths thereof in value is actually lost, or would have to be expended to recover it from the peril; If it is injured to such an extent as to reduce its value more than three-fourths; If the thing insured is a ship, and the contemplated voyage cannot be lawfully performed without incurring either an expense to the insured of more than three-fourths the value of the thing abandoned or a risk which a prudent man would not take under the circumstances; or If the thing insured is cargo or freightage, and the voyage cannot be performed, nor another ship procured by the master, within a reasonable time and with reasonable diligence, to forward the cargo, without incurring the like expense or risk mentioned in the preceding sub-paragraph. But freightage cannot in any case be abandoned, unless the ship is also abandoned.