German submarine U-155 (1941)

Columns: Date | Ship Name | Flag | Tonnage | Fate
22 February 1942 | Adellen | United Kingdom | 7,984 | Sunk | 22 February 1942 | Sama | Norway | 1,799 | Sunk | 7 March 1942 | Arabutan | Brazil | 7,874 | Sunk | 14 May 1942 | Brabant | Belgium | 2,483 | Sunk | 17 May 1942 | Challenger | United States Navy | 7,667 | Sunk | 17 May 1942 | San Victorio | United Kingdom | 8,136 | Sunk | 20 May 1942 | Sylvan Arrow | Panama | 7,797 | Sunk

Example questions:
Who died because of the German U-155 torpedo that sunk Brazil 's largest ship ? | A cargo ship that was destroyed about 3 months after completion by the German U-155 was flying a flag from a state established what year ? | The largest ship from the United States that was sunk by the German U-155 was built by what company ? | The second largest ship sunk in May 1942 by the German U-155 was built according to what principle ?

Answers:
Manoel Florêncio Coimbra | 1800 | Union Iron Works | Isherwood principle of longitudinal framing