46 C.F.R. §68.65
The Secretary of Transportation may waive or reduce the qualified proprietary cargo requirement of §68.65(a)(2)(iii) for a vessel if the person that owns the vessel (or, if the vessel is owned by a trust or similar arrangement, the beneficiary of the trust or similar arrangement) notifies the Secretary that circumstances beyond the direct control of the person that owns the vessel or its affiliates prevent, or reasonably threaten to prevent, the person that owns the vessel from satisfying this requirement, and the Secretary does not, with good cause, determine otherwise. The waiver or reduction applies during the period of time that the circumstances exist.