Sergey Prokudin-Gorsky
Sergey Mikhaylovich Prokudin-Gorsky (, ;  – September 27, 1944) was a Russian chemist and photographer. He is best known for his pioneering work in colour photography and his effort to document early 20th-century Russia.
Mikhail Farikh
Mikhail Farikh died on April 18, 2016 during the second helicopter expedition in search of the Svyataya Anna gunvessel. The fatal crash occurred at 22:06 local time (17:06 UTC) at Oleg Prodan, polar explorer and director of the Onezhskoye Pomorye National Park, and Alexei Frolov, founder and owner of the Mirital company, died along with him. All three men held private pilot licenses with the helicopter pilot entry.