Two Separate Cuba-Destined Relief Sailboats Listed Missing following Setting Sail from Mexico.

A large-scale search and rescue mission is presently in progress in the Caribbean region for a duo of unlocated sailboats carrying relief goods journeying from the Mexican coast to Cuba.

Naval Search Missions Initiated

Authorities in Mexico has deployed navy personnel and military search aircraft to locate the Friendship and Tigger Moth, which were transporting at least nine total sailors, per a official statement.

The boats had been expected to make landfall in Cuba's capital on either Tuesday or Wednesday, but there has been a complete lack of contact from them and no official word of their arrival, authorities reported.

Background of Humanitarian Support to the Island

The Caribbean nation has leaned on humanitarian shipments from Mexico over recent weeks, as the country struggles through repeated national electricity failures.

"Both skippers and their teams are experienced sailors, and both vessels are equipped with proper safety equipment and emergency beacons," a spokesperson for the convoy said.

The nine individuals on board are nationals of Poland, France, Cuba and the US. Mexican authorities said it has been in touch with coast guard agencies from each country along with their consular staff.

"Our team is co-operating fully with the relevant authorities and continue to be hopeful in the capability of the sailors to make it to Cuba without incident," the statement continued.

Recent Relief Shipment

Previously that week, the Cuban government publicly celebrated and warmly received a different ship that had delivered a significant amount of donated goods to the country.

That boat, called "Granma 2.0" after the yacht in which Castro came back to Cuba to begin the Cuban Revolution in the 1950s, brought solar panels, pharmaceuticals, baby formula, cycles and provisions.

Larger International Backdrop

Non-governmental organizations and volunteers have been at the forefront of attempts to deliver critical assistance to Cuba starting at the turn of the year, when a energy blockade on the island nation came into effect.

Global bodies have since warned of ""severe" lack of essential goods, with over 50,000 surgeries cancelled in Cuba because of energy rationing.

Diplomatic pressure have been ramped up over the past months, with comments from various representatives underscoring the complicated nature of diplomatic ties.

Reacting to certain comments, a high-ranking government figure declared that "the socialist system of Cuba is non-negotiable."

Reports suggest that early stages of talks had begun, although their current progress remains unclear.

The maritime authorities affirmed it was committed to using all of the resources at its reach to find the sailboats and ensure the security of the crews.

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