Why did the RMS Mauretania and her sister ships have this arc-shaped cut right beneath the rear propellers? - Quora
![Propeller aus der RMS Lusitania, versenkt von einem deutschen U-Boot am 7. Mai 1915 auf dem Display in Liverpool Docks Bereich Stockfotografie - Alamy Propeller aus der RMS Lusitania, versenkt von einem deutschen U-Boot am 7. Mai 1915 auf dem Display in Liverpool Docks Bereich Stockfotografie - Alamy](https://c8.alamy.com/compde/2da8yee/propeller-aus-der-rms-lusitania-versenkt-von-einem-deutschen-u-boot-am-7-mai-1915-auf-dem-display-in-liverpool-docks-bereich-2da8yee.jpg)
Propeller aus der RMS Lusitania, versenkt von einem deutschen U-Boot am 7. Mai 1915 auf dem Display in Liverpool Docks Bereich Stockfotografie - Alamy
![Service to mark the 99th Anniversary of the sinking of Cunard Liner RMS Lusitania Pics Andrew Teebay - Liverpool Echo Service to mark the 99th Anniversary of the sinking of Cunard Liner RMS Lusitania Pics Andrew Teebay - Liverpool Echo](https://i2-prod.liverpoolecho.co.uk/incoming/article7087868.ece/ALTERNATES/s1227b/at070514lusitania-5JPG.jpg)
Service to mark the 99th Anniversary of the sinking of Cunard Liner RMS Lusitania Pics Andrew Teebay - Liverpool Echo
![Stern view of Lusitania on stocks showing the propellers and the launching cradle] | Lusitania, Under the ocean, Rms mauretania Stern view of Lusitania on stocks showing the propellers and the launching cradle] | Lusitania, Under the ocean, Rms mauretania](https://i.pinimg.com/originals/f1/c0/13/f1c0134b7d6d256cc77b66da6deb0e9e.jpg)
Stern view of Lusitania on stocks showing the propellers and the launching cradle] | Lusitania, Under the ocean, Rms mauretania
![Phil Fountain on Twitter: "Spent a few days in Dallas this week. I happened to see this historic propeller — it's from the RMS Lusitania (displayed on the grounds of the @HiltonAnatole). Phil Fountain on Twitter: "Spent a few days in Dallas this week. I happened to see this historic propeller — it's from the RMS Lusitania (displayed on the grounds of the @HiltonAnatole).](https://pbs.twimg.com/media/FQ_XB-bWQAIQHaq.jpg:large)
Phil Fountain on Twitter: "Spent a few days in Dallas this week. I happened to see this historic propeller — it's from the RMS Lusitania (displayed on the grounds of the @HiltonAnatole).
![Hintergrundbilder : RMS Lusitania, Propeller, Liverpool 1833x1227 - texasrv - 1489839 - Hintergrundbilder - WallHere Hintergrundbilder : RMS Lusitania, Propeller, Liverpool 1833x1227 - texasrv - 1489839 - Hintergrundbilder - WallHere](https://get.wallhere.com/photo/RMS-Lusitania-propeller-Liverpool-1489839.jpg)
Hintergrundbilder : RMS Lusitania, Propeller, Liverpool 1833x1227 - texasrv - 1489839 - Hintergrundbilder - WallHere
![At a waterpark I saw a propeller from the RMS Lusitania, which sank in 1915 and provoked the USA into entering WW1 : r/mildlyinteresting At a waterpark I saw a propeller from the RMS Lusitania, which sank in 1915 and provoked the USA into entering WW1 : r/mildlyinteresting](https://i.redd.it/16es4r29mo671.jpg)
At a waterpark I saw a propeller from the RMS Lusitania, which sank in 1915 and provoked the USA into entering WW1 : r/mildlyinteresting
![LUSITANIA TORPEDO SINKING U20 ATLANTIC OCEAN IRELAND COAST KINSALE HEAD WALTHER SCHWIEGER GERMAN SUBMARINE ATTACK LUSITANIA TORPEDO SINKING U20 ATLANTIC OCEAN IRELAND COAST KINSALE HEAD WALTHER SCHWIEGER GERMAN SUBMARINE ATTACK](https://www.bluebird-electric.net/boats_images/lusitania_rms_pre-launch_stern_quad_propeller_screws.jpg)