Plaque reads:
<p>The Georgian North Dock
</p>
Designed by eminent engineer William Chapman for the 3rd Marquis of Londonderry for the shipping of coal. The foundation stone laid on 28th November 1828 marked the beginning of the town of Seaham harbour.
<a href="//commons.wikimedia.org/w/index.php?title=User:Millerdl&amp;action=edit&amp;redlink=1" class="new" title="User:Millerdl (page does not exist)">Millerdl</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>