Table:
text: Hans-Georg Hess
Ships attacked
Ships attacked
Date_ Name_of_ship Flag Tonnage Fate
5December1944 Proletarij Soviet Union 1123 sunk at
21December1944 Reshitel`nyj Soviet Union 20 sunk at
26December1944 RT-52 Som Soviet Union 417 sunk at
29December1944 T-883 (No 37) Soviet Union 633 sunk at
2March1945 BO-224 Soviet Union 105 sunk at
20March1945 Horace Bushnell United States 7176 damaged at

Question: How did the ship named proletarij end its service with Hans-Georg Hess?

Question: What is the average tonnage of the ship named proletarij at Hans-Georg Hess?