Robuta

https://www.crwflags.com/FOTW/flags/gb~ycweh.html

A History of Yacht Club White Ensigns (United Kingdom)

yacht club united kingdom history white ensigns

https://www.crwflags.com/FOTW/flags/ufe22a.html

Unidentified Flags or Ensigns - Page 2 (2022)

unidentified flags ensigns