Executives from US-flag shipowners defended their efforts in resupplying Puerto Rico in the wake of widespread criticism of the Jones Act.

Five days into a waiver for the law to bring cargoes to the US territory, no foreign-flag ships have taken up cargoes for Puerto Rico.

TOTE Maritime president and chief executive Anthony Chiarello says "we have not received a call to unload foreign-flag ships" at its terminal in San Juan.