The crew were forced to slow the ferry down, turn it around and within 15 minutes had launched the rescue boat and got them on board

Gail Isted, P&O Stena Line

"I'd call it desperate more than dangerous," he said. "It's unbelievable."

A spokesman for the French Coastguard said: "The Provence found two persons on inflatable mattresses about seven miles south west of Calais.

"They took them on board and on to Calais where they were met by two French police officers.

"We have had a number of reports from French small boat owners having their boats stolen and they think they are being stolen by these illegal immigrants."

The Dover Coastguard spokesman added that the men were fortunate that conditions in the Channel were good.

Rescue boat

"This just shows the desperation of these people to get to this country.

"They were on nothing more than children's inflatable lilos and had both been on them for 10 hours with their bags."

Gail Isted of P&0 Stena Line said the crew of the 0430BST sailing from Dover spotted the suspected asylum seekers and launched their rescue boat to pick them up at around 0530BST.

"The crew were forced to slow the ferry down, turn it around and within 15 minutes had launched the rescue boat and got them on board.

"It's lucky that our crew reacted so quickly."