A group of Cuban migrants drank their own urine and blood after the engine of their homemade boat failed, leaving them adrift in the Caribbean for three weeks without food or water, according to survivors who reached the US this week.

“I’m happy I made it, alive, but it was something no-one should have to go through,” said Alain Izquierdo, a Havana butcher, and one of 15 survivors of the 32 passengers.

Six passengers are missing after they tried to swim to shore, while 11 others died of dehydration.

The survivors were rescued by Mexican fishermen 240 kilometres northeast of Mexico’s Yucatan peninsula and were briefly detained in Mexico before being released .

Their story is one of the most tragic Cuban migrant disasters in decades. Reuters spoke to several of the passengers and their relatives in Florida and Texas, although some were still too traumatised to talk publicly.

Cubans seeking to flee the communist-run island are heading in increasing numbers by sea to Central America and then making a long journey overland to reach the US. Under Washington’s “wet foot, dry foot policy”, Cuban migrants who make it onto US soil are allowed to remain, while those intercepted at sea are turned back.

The group set off from eastern Cuba, but ran into trouble about 40 miles from the Cayman Islands when the boat’s motor – a Hyundai diesel car engine, attached to a homemade propeller – failed on the second day at sea, said Izquierdo, 32. The 20-foot, home-made craft, made from aluminium roofing sheets riveted together and sealed with cloth and resin, drifted up the Cuban coast as the passengers tried to flag down passing ships.

“No-one stopped even though they could see we were desperate,” said Mailin Perez, 30, another survivor recovering in Austin, Texas.

The passengers heaved the engine overboard to reduce weight and fashioned a makeshift sail from sheets sewn together with cord. Six of the men decided to swim for the Cuban coast clinging to inner tubes, but have not been heard from since.

Brief rain showers every three or four days provided the only water, rationed out in doses by medical syringes. One woman who was six months pregnant received extra rations. One by one, 11 passengers died. Their bodies, lips swollen, were slid overboard and floated off into the distance, a sight that one survivor said haunts her in nightmares.

The first to die was Izquierdo’s friend, 50-year-old Havana car mechanic, Rafael Baratuti O’Farrill. After running out of water, some passengers began drinking sea water, as well as their own urine. O’Farrill was one of several who also used syringes to draw their own blood to drink.

“That was a mistake, the ones who drank their blood became faint. Gradually they lost their minds and faded away,” said Izquierdo.

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