CAPE TOWN, South Africa - Namibia's national oil company has signed a development deal with Chevron (CVX.N) that will see the U.S. oil major take an 80% operating working interest in an offshore block in the Walvis Basin, it said on Monday.

The farm-out agreement with Chevron Namibia Exploration Limited (CNEL) will see the National Petroleum Corporation of Namibia (NAMCOR) and local company Custos Energy each retain a 10% interest in petroleum exploration license 82.

Oil companies are flocking to Namibia, excited by the southern African country's plans to open up a major new frontier basin with recent offshore finds ranking among the largest this century.

"Our partnership with CNEL and Custos Energy represents a shared vision for the future of Namibia's energy landscape," Ebson Uanguta, interim managing director of NAMCOR, said in a statement.

Namibia, which has yet to produce any oil or gas, has become an exploration hotspot after offshore discoveries by TotalEnergies (TTEF.PA) and Shell (SHEL.L), opens new tab, and is planning for its first output by 2030.