The Moroccan navy said it intercepted 141 people attempting to traverse the Atlantic Ocean as migration from West Africa to Spain’s Canary Islands has spiked since the beginning of the year.

Morocco’s Royal Armed Forces said in a statement on Sunday it was able to rescue all passengers on a boat off the coast of the Western Sahara, a disputed territory with a coastline that Morocco has controlled since 1975.

It said the 141 people all came from sub-Saharan Africa and likely embarked more than a week earlier from Mauritania – Morocco’s southern neighbour and the primary point of departure for migrants attempting to reach Spain’s Canary Islands. The interception was the largest that Moroccan authorities have reported this year.

The Canary Islands are roughly 62 miles (100 kilometres) from Morocco’s Atlantic coast but pirogues – the wooden vessels migrants often use to cross – often launch from as far south as Gambia, from where the journey can take up to 10 days, according to the Global Initiative Against Transnational Organized Crime.

Spain’s Interior Ministry reported 11,704 migrants had arrived to the Canaries as of February 15 – more than a sixfold increase from a year earlier. The majority have departed from Mauritania, which recently signed a 210 million euro agreement with the European Union that included funding for migration patrolling and humanitarian aid.

• An AP report