Sam Nujoma, president of the South West African People's Organization, said yesterday that Cuban President Fidel Castro had promised to assist the group in its attempt to seize power in Namibia (Southwest Africa).

In an interview with South African reporters in Lusaka, Zambia, Nujoma said Castro had "promised to continue to support SWAPO in and out" of Nambia "with material assistance and he did the same for other liberation movements in southern Africa."

Nujoma met with Castro in Angola earlier this week along with Joshua Nkomo, leader of the Patriotic Front of Zimbabwe (Rhodesia) and Oliver Tambo of the African National Congress of South Africa.

Castro was in Algeria yesterday for talks with President Houarf Boumediene. He was scheduled to fly to East Germany Saturday.

Soviet President Nikolai Podgorny, who has also been touring Africa, had a day of rest at Tanzanian President Julius Nyerere's lodge in the foothills of Kilimanjaro.

In Johannesburg, Gen. Jack Dutton, chief of the South African military's operations staff accused the Soviet Union of using Castro's and Podgorny's tours to exploit Western fears of war in southern Africa.

Rhodesian Defense Minister Mark Partridge also assailed the Kremlin, saying its "expansionist policy" invited atomic warfare.

The antigovernment Institute of Race Relations in Pretoria, South Africa, published the names of 471 persons, it said were being detained without trial under that country's state security laws.