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:
Lindau-class minehunter
Table title:
Ship list
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Pennant number </th><th colspan=1 rowspan=1 > Name </th><th colspan=1 rowspan=1 > Service </th><th colspan=1 rowspan=1 > Upgrade </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td colspan=1 rowspan=1 > M1072 </td><td colspan=1 rowspan=1 > Lindau </td><td colspan=1 rowspan=1 > 1 February 1958–1975 </td><td colspan=1 rowspan=1 > Type 331 </td><td colspan=1 rowspan=1 > To Estonian Navy 2000. Renamed Sulev. </td></tr>
<tr> <td colspan=1 rowspan=1 > M1070 </td><td colspan=1 rowspan=1 > Göttingen </td><td colspan=1 rowspan=1 > 1 April 1957–1976 </td><td colspan=1 rowspan=1 > Type 331 </td><td colspan=1 rowspan=1 > To Latvian Navy 2000. Used as spares hulk. </td></tr>
<tr> <td colspan=1 rowspan=1 > M1071 </td><td colspan=1 rowspan=1 > Koblenz </td><td colspan=1 rowspan=1 > 6 May 1957–1975 </td><td colspan=1 rowspan=1 > Type 331 </td><td colspan=1 rowspan=1 > To Lithuanian Navy 1999. Renamed Sūduvis. </td></tr>
<tr> <td colspan=1 rowspan=1 > M1075 </td><td colspan=1 rowspan=1 > Wetzlar </td><td colspan=1 rowspan=1 > 24 June 1957–1976 </td><td colspan=1 rowspan=1 > Type 331 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > M1074 </td><td colspan=1 rowspan=1 > Tübingen </td><td colspan=1 rowspan=1 > 12 August 1957–1975 </td><td colspan=1 rowspan=1 > Type 331 </td><td colspan=1 rowspan=1 > converted to private yacht,Gibraltar flag, retains most of original appearance including navy grey paint (except white top on funnel) </td></tr>
<tr> <td colspan=1 rowspan=1 > M1073 </td><td colspan=1 rowspan=1 > Schleswig </td><td colspan=1 rowspan=1 > 2 October 1957–1979 </td><td class="highlighted"  colspan=1 rowspan=1 > Type 351 </td><td class="highlighted"  colspan=1 rowspan=1 > To South African Navy 2001. Renamed SAS Tshwane </td></tr>
<tr> <td colspan=1 rowspan=1 > M1076 </td><td colspan=1 rowspan=1 > Paderborn </td><td colspan=1 rowspan=1 > 4 February 1957–1979 </td><td class="highlighted"  colspan=1 rowspan=1 > Type 351 </td><td class="highlighted"  colspan=1 rowspan=1 > To South African Navy 2001. Renamed SAS Mangaung </td></tr>
<tr> <td colspan=1 rowspan=1 > M1077 </td><td colspan=1 rowspan=1 > Weilheim </td><td colspan=1 rowspan=1 > 5 December 1958–1976 </td><td colspan=1 rowspan=1 > Type 331 </td><td colspan=1 rowspan=1 > On display at the Deutsches Marine Museum, Wilhelmshaven </td></tr>
<tr> <td colspan=1 rowspan=1 > M1078 </td><td colspan=1 rowspan=1 > Cuxhaven </td><td colspan=1 rowspan=1 > 11 March 1958–1976 </td><td colspan=1 rowspan=1 > Type 331 </td><td colspan=1 rowspan=1 > To Estonian Navy 2000. Renamed Wambola </td></tr>
<tr> <td colspan=1 rowspan=1 > M1079 </td><td colspan=1 rowspan=1 > Düren </td><td colspan=1 rowspan=1 > 12 June 1958–1979 </td><td class="highlighted"  colspan=1 rowspan=1 > Type 351 </td><td class="highlighted"  colspan=1 rowspan=1 > To South African Navy 2001. Renamed SAS Kapa </td></tr>
<tr> <td colspan=1 rowspan=1 > M1080 </td><td colspan=1 rowspan=1 > Marburg </td><td colspan=1 rowspan=1 > 4 August 1958–1976 </td><td colspan=1 rowspan=1 > Type 331 </td><td colspan=1 rowspan=1 > To Lithuanian Navy 2000. Renamed Kursis. </td></tr>
<tr> <td colspan=1 rowspan=1 > M1081 </td><td colspan=1 rowspan=1 > Konstanz </td><td colspan=1 rowspan=1 > 30 August 1958–1980 </td><td class="highlighted"  colspan=1 rowspan=1 > Type 351 </td><td class="highlighted"  colspan=1 rowspan=1 > To South African Navy 2001. Used as spares hulk. </td></tr>
<tr> <td colspan=1 rowspan=1 > M1082 </td><td colspan=1 rowspan=1 > Wolfsburg </td><td colspan=1 rowspan=1 > 10 December 1958–1979 </td><td class="highlighted"  colspan=1 rowspan=1 > Type 351 </td><td class="highlighted"  colspan=1 rowspan=1 > To South African Navy 2001. Renamed SAS Tekwini </td></tr>
<tr> <td colspan=1 rowspan=1 > M1083 </td><td colspan=1 rowspan=1 > Ulm </td><td colspan=1 rowspan=1 > 10 February 1959–1978 </td><td class="highlighted"  colspan=1 rowspan=1 > Type 351 </td><td class="highlighted"  colspan=1 rowspan=1 > To South African Navy 2001. Used as spares hulk. </td></tr>
<tr> <td colspan=1 rowspan=1 > M1084 </td><td colspan=1 rowspan=1 > Flensburg </td><td colspan=1 rowspan=1 > 7 April 1959–1970 </td><td colspan=1 rowspan=1 > Type 331 </td><td colspan=1 rowspan=1 > Museum ship </td></tr>
<tr> <td colspan=1 rowspan=1 > M1085 </td><td colspan=1 rowspan=1 > Minden </td><td colspan=1 rowspan=1 > 9 June 1959–1975 </td><td colspan=1 rowspan=1 > Type 331 </td><td colspan=1 rowspan=1 > To Coast Guard of Georgia 1998. Renamed Ayety (აეტი) </td></tr>
<tr> <td colspan=1 rowspan=1 > M1086 </td><td colspan=1 rowspan=1 > Fulda </td><td colspan=1 rowspan=1 > 19 August 1959– </td><td colspan=1 rowspan=1 > Type 331 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > M1087 </td><td colspan=1 rowspan=1 > Völkingen </td><td colspan=1 rowspan=1 > 20 October 1959–1976 </td><td colspan=1 rowspan=1 > Type 331 </td><td colspan=1 rowspan=1 > To Latvian Navy 2000. Renamed LVNS Nemejs </td></tr>
</table>
Question:
Where were the Lindau-class minehunter Type 351s sold?
Answer:
All six Type 351s were sold to the South African Navy in 2001.