Studies in Wave Formation. Two aerial views of a destroyer (the <a href="https://en.wikipedia.org/wiki/Royal_Yugoslav_Navy" class="extiw" title="en:Royal Yugoslav Navy">Royal Yugoslav</a> <a href="https://en.wikipedia.org/wiki/Flotilla_leader" class="extiw" title="en:Flotilla leader">Flotilla Leader</a> <a href="https://en.wikipedia.org/wiki/JRM_Dubrovnik" class="extiw" title="en:JRM Dubrovnik"><i>Dubrovnik</i></a>) running at 37 knots
<a href="//commons.wikimedia.org/wiki/User:Andy_Dingley" title="User:Andy Dingley">Andy Dingley</a> (scanner)
1936
Scan from <cite class="book" style="font-style:normal">Burgess, Malcolm William (1936)      <i> Warships To-day</i>, <a href="https://en.wikipedia.org/wiki/en:London" class="extiw" title="w:en:London"><span title="capital and largest city of the United Kingdom">London</span></a>:  Oxford University Press, pp. <i>facing page.</i> 56  <small></small></cite>