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:
Erich Würdemann
Table title:
Ships attacked
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 > 3 May 1942 </td><td colspan=1 rowspan=1 > Sama </td><td colspan=1 rowspan=1 > Netherlands </td><td class="highlighted"  colspan=1 rowspan=1 > 567 </td><td class="highlighted"  colspan=1 rowspan=1 > Sunk </td></tr>
<tr> <td colspan=1 rowspan=1 > 10 May 1942 </td><td colspan=1 rowspan=1 > Aurora </td><td colspan=1 rowspan=1 > United States </td><td class="highlighted"  colspan=1 rowspan=1 > 7,050 </td><td class="highlighted"  colspan=1 rowspan=1 > Damaged </td></tr>
<tr> <td colspan=1 rowspan=1 > 13 May 1942 </td><td colspan=1 rowspan=1 > David McKelvy </td><td colspan=1 rowspan=1 > United States </td><td class="highlighted"  colspan=1 rowspan=1 > 6,821 </td><td class="highlighted"  colspan=1 rowspan=1 > Total loss </td></tr>
<tr> <td colspan=1 rowspan=1 > 16 May 1942 </td><td colspan=1 rowspan=1 > Sun </td><td colspan=1 rowspan=1 > United States </td><td class="highlighted"  colspan=1 rowspan=1 > 9,002 </td><td class="highlighted"  colspan=1 rowspan=1 > Damaged </td></tr>
<tr> <td colspan=1 rowspan=1 > 16 May 1942 </td><td colspan=1 rowspan=1 > William C. McTarnahan </td><td colspan=1 rowspan=1 > United States </td><td class="highlighted"  colspan=1 rowspan=1 > 7,366 </td><td class="highlighted"  colspan=1 rowspan=1 > Damaged </td></tr>
<tr> <td colspan=1 rowspan=1 > 17 May 1942 </td><td colspan=1 rowspan=1 > Gulfoil </td><td colspan=1 rowspan=1 > United States </td><td class="highlighted"  colspan=1 rowspan=1 > 5,189 </td><td class="highlighted"  colspan=1 rowspan=1 > Sunk </td></tr>
<tr> <td colspan=1 rowspan=1 > 19 May 1942 </td><td colspan=1 rowspan=1 > Heredia </td><td colspan=1 rowspan=1 > United States </td><td class="highlighted"  colspan=1 rowspan=1 > 4,732 </td><td class="highlighted"  colspan=1 rowspan=1 > Sunk </td></tr>
<tr> <td colspan=1 rowspan=1 > 20 May 1942 </td><td colspan=1 rowspan=1 > Halo </td><td colspan=1 rowspan=1 > United States </td><td class="highlighted"  colspan=1 rowspan=1 > 6,986 </td><td class="highlighted"  colspan=1 rowspan=1 > Sunk </td></tr>
<tr> <td colspan=1 rowspan=1 > 20 May 1942 </td><td colspan=1 rowspan=1 > Yorkmoor </td><td colspan=1 rowspan=1 > United Kingdom </td><td class="highlighted"  colspan=1 rowspan=1 > 4,457 </td><td class="highlighted"  colspan=1 rowspan=1 > Sunk </td></tr>
<tr> <td colspan=1 rowspan=1 > 31 May 1942 </td><td colspan=1 rowspan=1 > Fred W. Green </td><td colspan=1 rowspan=1 > United Kingdom </td><td class="highlighted"  colspan=1 rowspan=1 > 2,292 </td><td class="highlighted"  colspan=1 rowspan=1 > Sunk </td></tr>
<tr> <td colspan=1 rowspan=1 > 21 August 1942 </td><td colspan=1 rowspan=1 > City of Wellington </td><td colspan=1 rowspan=1 > United Kingdom </td><td class="highlighted"  colspan=1 rowspan=1 > 5,733 </td><td class="highlighted"  colspan=1 rowspan=1 > Sunk </td></tr>
<tr> <td colspan=1 rowspan=1 > 23 August 1942 </td><td colspan=1 rowspan=1 > Hamla </td><td colspan=1 rowspan=1 > United Kingdom </td><td class="highlighted"  colspan=1 rowspan=1 > 4,416 </td><td class="highlighted"  colspan=1 rowspan=1 > Sunk </td></tr>
<tr> <td colspan=1 rowspan=1 > 5 September 1942 </td><td colspan=1 rowspan=1 > Myrmidon </td><td colspan=1 rowspan=1 > United Kingdom </td><td class="highlighted"  colspan=1 rowspan=1 > 6,278 </td><td class="highlighted"  colspan=1 rowspan=1 > Sunk </td></tr>
<tr> <td colspan=1 rowspan=1 > 13 September 1942 </td><td colspan=1 rowspan=1 > Lima </td><td colspan=1 rowspan=1 > Sweden </td><td class="highlighted"  colspan=1 rowspan=1 > 3,764 </td><td class="highlighted"  colspan=1 rowspan=1 > Sunk </td></tr>
<tr> <td colspan=1 rowspan=1 > 23 September 1942 </td><td colspan=1 rowspan=1 > Siam II </td><td colspan=1 rowspan=1 > United Kingdom </td><td class="highlighted"  colspan=1 rowspan=1 > 6,637 </td><td class="highlighted"  colspan=1 rowspan=1 > Sunk </td></tr>
<tr> <td colspan=1 rowspan=1 > 7 March 1943 </td><td colspan=1 rowspan=1 > Sabor </td><td colspan=1 rowspan=1 > United Kingdom </td><td class="highlighted"  colspan=1 rowspan=1 > 5,212 </td><td class="highlighted"  colspan=1 rowspan=1 > Sunk </td></tr>
<tr> <td colspan=1 rowspan=1 > 9 March 1943 </td><td colspan=1 rowspan=1 > Tabor </td><td colspan=1 rowspan=1 > Norway </td><td class="highlighted"  colspan=1 rowspan=1 > 4,758 </td><td class="highlighted"  colspan=1 rowspan=1 > Sunk </td></tr>
</table>
Question:
How deadly was Erich Würdemann?
Answer:
U-506 Erich Würdemann is credited with the sinking of 13 ships for a total of 61,011 GRT, further damaging three ships of 23,418 GRT and damaging one ship of 6,821 GRT that was a total loss.