A Pair of Cuba-Headed Relief Vessels Declared Unaccounted For after Departing Mexico.

A large-scale rescue and recovery effort is presently under way in the Caribbean Sea for two unlocated sailing vessels carrying relief goods en route from the Mexican coast to Cuba.

Naval Search Efforts Launched

The Mexican government has sent naval assets and military search aircraft to search for the two vessels, which were carrying no fewer than nine total sailors, per a military release.

The ships had been projected to make landfall in Havana on the early part of the week, but there has been radio silence from them and zero verification of their docking, authorities reported.

Background of Humanitarian Support to the Nation

The island nation has depended significantly on Mexico's over the last several weeks, as the island struggles through widespread national electricity failures.

"Both crews and captains are veteran seafarers, and the two ships are outfitted with suitable safety systems and signalling equipment," an official involved in the effort said.

The nine-person crew are citizens of France, Poland, the United States, and Cuba. Officials said it has established contact with coast guard agencies from each country along with their diplomatic representatives.

"Our team is co-operating fully with the relevant authorities and continue to be hopeful in the crews' ability to safely arrive in Havana," the statement continued.

Previous Relief Mission

Earlier in the week, the government in Havana warmly welcomed and greeted with fanfare a different ship that had delivered a significant amount of donated goods to the nation.

That vessel, called "a modern Granma" after the boat in which Fidel Castro returned to Cuba to launch the Cuban Revolution in the mid-20th century, delivered solar panels, pharmaceuticals, infant formula, bicycles and provisions.

Wider Political Context

Non-governmental organizations and volunteers have been at the forefront of efforts to bring essential supplies to Cuba beginning in January, a period which saw a fuel embargo on the country was initiated.

International organizations have since raised alarms about "dire" supply shortages, with over 50k surgeries postponed in Cuba because of energy rationing.

Diplomatic pressure have intensified over the past months, with remarks from several leaders highlighting the delicate state of bilateral relations.

Responding to certain proposals, a high-ranking Cuban official stated firmly that "the socialist system of Cuba is not up for negotiation."

Indications suggest that initial phases of negotiations commenced, although their present status remains uncertain.

The naval forces said it was committed to using all of the resources at its command to locate the vessels and guarantee the well-being of the people on board.

At this time, there has been no official comment on the lost ships by the Cuban government.