I've solved that issue by starting from scratch ( all good experience)
when I now do a search an image field with the code
<td class="WADAResultsTableCell"><a href="admin_Detail.php?id=<?php echo(rawurlencode($row_WADAboats['id'])); ?>" ><?php echo($row_WADAboats['dt_boatImageThumbnail']); ?></a></td>
shows us as the file name ie image.jpeg.
I need the image to be displayed but when I use the code:
<img src="../boat_images/<?php echo $row_WADAboats["dt_boatImageThumbnail"]; ?>"
<?php echo($row_WADAboats['dt_boatImageThumbnail']); ?>
I get the yellow ? in DW and no image shows.
Where is my code wrong?