Two Moroccan players from top-flight soccer side Ittihad Tanger have been missing at sea since Saturday after strong currents drifted their small yacht, a club official said on Sunday.

They were in a group of five players from the club who went cruising off the northern city of Tangier when strong currents and heavy winds drifted their yacht away as they were swimming in deep waters, club deputy president Anass Mrabet told Reuters.

"Three players have already been rescued on Saturday, while research is still ongoing for the missing Salman Harraq and Abdellatif Akhrif," he said.

The players did not have buoys on them when they jumped from the small yacht to swim, he said citing recounts by rescued players.

While Akhrif, 24, is already a full member of the squad, Harraq, 18, was about to move up to the senior team this year, Mrabet added.

Ittihad Tanger have been in the Moroccan top flight since 2015 and won the league title for the first and only time in their history in the 2017-18 season. However, they have struggled in the lower half of the standings in recent years.