Martha Anderson of Army Navy, who carries a 12 handicap, captured the Class A Star Cup in a women's District Golf Association tournament at Belle Haven yesterday. Her net 69 was one stroke better than Marge Jack of Manor. Carol Hasegawa of Washingtonian was third with 71.

Sue Keeney, newly crowned WDGA champion, matched women's par 74 to take the gross prize by a stroke over Sally Voss of Congressional, current Middle Atlantic Women's Amateur champion. Tina Marlowe of Woodmont won third low gross in a draw against Rebecca Doman of Argyle. Each had a 79.

Anderson started off with a double-bogey seven but then reeled off four straight pars before catching a bogey on the sixth. She made the turn in 42 and got hot on the back nine with a 39, including a birdie on the 12 when she sank a 10-foot putt. She had 10 pars for the day.

Kenney was out in 36, one under women's par. She started with two birdies, parred the third and then bogeyed the next two holes. She finished with three pars and a birdie.

She ran into early trouble on the back nine when she bogeyed the 10th and 11th holes. She parred the 12th and got a birdie four on the long 13th. She bogeyed the 15th and birdied the 16th to come home in 38.

Voss, 19, a junior at Stanford University who is working at NIH this summer, was out in 38 with three bogeys and two birdies and home in 37 with a bogey and a birdie.

Jack has played little golf this summer. Hasegawa missed winning the Keefer Cup last month when she called a penalty stroke on herself and then lost in a playoff with Keeney.