- wiki2.org en/ORP_Orzeł_(1938)
- realpolandtours.com orp-orzel-ww2-polish-…
- military-history.fandom.com wiki/ORP_Orzeł_(1938)
- planetminecraft.com project/orp-eagel-orp-orze-…
- weaponsandwarfare.com 2016/02/19/polish-navy-1939…
- ww2aircraft.net forum/media/orp-orzel-1938-…
- commons.wikimedia.org wiki/Category:ORP_Orzeł_(…
- pinterest.com pin/english-polish-submarine-orp-…