Two Separate Cuba-bound Aid Sailboats Listed Unaccounted For after Leaving Mexican Waters.

A large-scale search and recovery effort is actively under way in the Caribbean waters for two missing boats carrying relief goods en route from Mexico to Havana.

Military Search Missions Initiated

Mexico has deployed navy personnel and military search aircraft to search for the missing boats, which were carrying no fewer than nine personnel, according to a official statement.

The boats had been projected to make landfall in Cuba's capital on Tuesday or Wednesday, but there has been no communication from them and no confirmation of their arrival, the statement clarified.

Background of Humanitarian Support to the Nation

Cuba has depended significantly on aid convoys from Mexico over the last several weeks, as the nation struggles through widespread power outages across the country.

"The captains and crews are experienced sailors, and the two ships are fitted with suitable safety systems and signalling equipment," an official associated with the mission stated.

The nine crew members are from France, Poland, the United States, and Cuba. Officials said it has been in touch with maritime rescue coordination centres from those nations along with their diplomatic representatives.

"The group is co-operating fully with the officials and continue to be hopeful in the crews' ability to reach Havana safely," the statement continued.

Earlier Relief Mission

Earlier in the week, the government in Havana publicly celebrated and greeted with fanfare a separate vessel that had delivered a significant amount of donated goods to the island.

That boat, dubbed "a modern Granma" in reference to the vessel in which Castro landed in Cuba to launch the Cuban Revolution in the 1950s, carried solar equipment, drugs, formula milk, bikes and food.

Larger Political Climate

Non-governmental organizations and volunteers have been at the forefront of initiatives to bring critical assistance to Cuba beginning in January, when a fuel embargo on the island nation came into effect.

International organizations have since raised alarms about ""critical" shortages of supplies, with in excess of 50,000 operations postponed in Cuba because of power shortages.

Political tensions have intensified lately, with comments from different representatives emphasizing the complicated nature of diplomatic ties.

Reacting to recent comments, a prominent official from Cuba insisted that "the political system of Cuba is non-negotiable."

Reports suggest that preliminary steps of negotiations were initiated, although their present status remains uncertain.

The maritime authorities stated it was dedicated to using the full extent of its capabilities at its disposal to discover the vessels and guarantee the well-being of the people on board.

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