German torpedo boats shelled the soviets .
German torpedo boats caused only damage to the two gunboats MBK - 503 , MBK - 505 and on the MO - 106 , without sinking them .
German torpedo boats shelled the soviets but caused only damage to the two gunboats MBK - 503 , MBK - 505 and on the MO - 106 , without sinking them .