Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
German submarine U-590
Table title:
Summary of raiding history
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Date </th><th colspan=1 rowspan=1 > Name </th><th colspan=1 rowspan=1 > Nationality </th><th colspan=1 rowspan=1 > Tonnage (GRT) </th><th colspan=1 rowspan=1 > Fate </th></tr>
<tr> <td colspan=1 rowspan=1 > 11 March 1943 </td><td colspan=1 rowspan=1 > Jamaica Producer </td><td colspan=1 rowspan=1 > United Kingdom </td><td class="highlighted"  colspan=1 rowspan=1 > 5,464 </td><td class="highlighted"  colspan=1 rowspan=1 > Damaged </td></tr>
<tr> <td colspan=1 rowspan=1 > 4 July 1943 </td><td colspan=1 rowspan=1 > Pelotaslóide </td><td colspan=1 rowspan=1 > Brazil </td><td class="highlighted"  colspan=1 rowspan=1 > 5,228 </td><td class="highlighted"  colspan=1 rowspan=1 > Sunk </td></tr>
</table>
Question:
What was the tonnage of ships sunk or damaged by the U-590?
Answer:
The German submarine, U-590 sank one ship of 5,228 GRT and damaged one other of 5,464 GRT.