I found a Spanish site about U-77
http://club.telepolis.com/ifach/andr.../submarino.htm and translated it with Google. There are some pics off the boat and its crew. She was sunk 28 off March 1943 by a Lockheed A28 Hanson just off the coast at
Peñón de Ifach en Calpe, en las coordenadas 38º 33” 309 N- 000º 14” 85 E. 9 survivors, 36 dead and 2 missing. It was her 15´th patrol. Some off the dead was buried at the local cemetery. U-77 had served in the 7 and 23 and was in the 29´th when she was sunk. Her first commander was Heinrich Schonder and her second was Otto Hartmann. He was only 26 years old. Life was tough and short in the u-boats.