Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Date | Ship | Nationality | Tonnage | Fate |
| --- | --- | --- | --- | --- |
| 5 March 1942 | Collamer | USA | 5112.0 | Sunk |
| 13 March 1942 | Tolten | Chile | 1858.0 | Sunk |
| 14 March 1942 | Lemuel Burrows | USA | 7610.0 | Sunk |
| 17 March 1942 | San Demitro | Great Britain | 8073.0 | Sunk |
| 30 May 1942 | Aloca Shipper | USA | 5491.0 | Sunk |
| 1 June 1942 | West Notus | USA | 5492.0 | Sunk |
| 3 June 1942 | Anna | Sweden | 1345.0 | Sunk |
| 24 June 1942 | Ljubica Matokovic | Yugoslavia | 3289.0 | Sunk |
| 25 June 1942 | Manuda | USA | 4772.0 | sunk |
| 25 June 1942 | Nordal | Panama | 3845.0 | sunk |
| 27 June 1942 | Moldanger | Norway | 6827.0 | Sunk |
| 11 September 1942 | Marit II | Norway | 7141.0 | Damaged |
| 12 September 1942 | Daghild | Norway | 9272.0 | Damaged |
| 26 September 1942 | HMS Veteran | Great Britain | 1120.0 | Sunk |
| 29 March 1943 | Nagara | Great Britain | 8791.0 | Sunk |
| 30 March 1943 | Empire Bowman | Great Britain | 7031.0 | Sunk |
| 12 April 1943 | Lancastrian Prince | Great Britain | 1914.0 | Sunk |
Question:
What was the tonnage on 30 march 1943?
Answer:
7031.0