According to the source, United States Library of Congress, this is an image of <i>Titanic</i>'s stern and rudder.<br>Others claim it to be of her sister <i>Olympic</i> ( Bruce Beveridge: <i>Titanic</i>—The Ship Magnificent Volume One: Design &amp; Construction, 2008, The History Press, page 100).<br>The ship in this photo is in fact the <i>Olympic</i>. Taken in 1911, the <i>Titanic</i> was not fitted with propellers until February or March of 1912. To date, there are no known photographs of her propellers, whereas the <i>Olympic</i> had hers photographed quite often. "When <i>Olympic</i> entered service in 1911, her propellers were photographed and these well-known photos show her turbine-driven central propeller as a four-bladed casting" (See at discussion in <a rel="nofollow" class="external text" href="https://www.encyclopedia-titanica.org/mystery-titanic-central-propeller.html">Encyclopedia Titanica</a>).
<bdi><a href="https://en.wikipedia.org/wiki/en:Robert_Welch_(photographer)" class="extiw" title="w:en:Robert Welch (photographer)"><span title="Irish photographer">Robert Welch</span></a>
</bdi>
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