bluemarble Posted May 24, 2023 #1 Share Posted May 24, 2023 (edited) At some point since we embarked QM2 on May 7th, at least two missing Commodore's Cufflinks have been replaced. There are now three new blades with bronze/brass colored coatings mounted near QM2's bow. I don't know for sure when the new blade on the starboard side first appeared, but the two on the port side have appeared since May 7th. The new blades have the following markings. Port side (leftmost two) QM2 BLADE № 1236•0950 LH TEMP:-17.8° QM2 BLADE № 1235•0949 LH TEMP:-17.9° Starboard side (leftmost) QM2 BLADE № 564 RH TEMP:-17.8° Edited May 24, 2023 by bluemarble 9 Link to comment Share on other sites More sharing options...
Rare babs135 Posted May 25, 2023 #2 Share Posted May 25, 2023 Bluemarble, I thought about these cufflinks when we were on the Victoria cruise which visited the drydock in Cadiz. If this had been on the QM2 I'm assuming that they would have used one of these blades? Can you explain what the temperature means please? 2 Link to comment Share on other sites More sharing options...
Nikita4 Posted May 25, 2023 #3 Share Posted May 25, 2023 I think that is not the temperature, it s the angle in grades. 1 Link to comment Share on other sites More sharing options...
Host Hattie Posted May 25, 2023 #4 Share Posted May 25, 2023 I thought that originally but I was a bit thrown by the TEMP comment. Hopefully @bluemarble can clarify. 1 Link to comment Share on other sites More sharing options...
Rare Jack E Dawson Posted May 25, 2023 #5 Share Posted May 25, 2023 It looks to me as if the new blades are slightly different in shape but perhaps that's just the camera angle. Jack 1 Link to comment Share on other sites More sharing options...
bluemarble Posted May 25, 2023 Author #6 Share Posted May 25, 2023 3 hours ago, babs135 said: Can you explain what the temperature means please? Sorry, I don't know what the TEMP markings mean on the new blades. I asked Dr. Stephen Payne about them after his lecture this morning and he didn't know, so I'm afraid it may remain a mystery for a while longer. By the way, Dr. Payne told me the new blades aren't actually newly-manufactured blades, but have been refurbished. Here is a photo showing the markings on one of the new blades in case it helps any. 3 Link to comment Share on other sites More sharing options...
Host Hattie Posted May 25, 2023 #7 Share Posted May 25, 2023 Thank you for this and your updates during your cruise and crossing. 2 Link to comment Share on other sites More sharing options...
techteach Posted May 26, 2023 #8 Share Posted May 26, 2023 @bluemarble You got to hear Stephen Payne?! I am so jealous, but very happy for you. Link to comment Share on other sites More sharing options...
bluemarble Posted May 26, 2023 Author #9 Share Posted May 26, 2023 1 minute ago, techteach said: @bluemarble You got to hear Stephen Payne?! I am so jealous, but very happy for you. Yes, Stephen Payne presented four outstanding lectures during our just-completed westbound crossing. The first was on Titanic, the second on Mauretania and Lusitania, the third a personal story on the design of Queen Mary 2, and the fourth on ships of the air (blimps, dirigibles and zeppelins). He received a standing ovation at the end of his talk on QM2. I felt extremely fortunate to have finally been able to attend his guest lectures on board QM2. 5 1 Link to comment Share on other sites More sharing options...
Rare D&N Posted May 26, 2023 #10 Share Posted May 26, 2023 I tried some research, and only thing I've come across so far is: Propeller Cavitation. Apparently it causes blade erosion and degradation and is affected by water temperatures. Perhaps the TEMP marking is related. Link to comment Share on other sites More sharing options...
paulco Posted May 26, 2023 #11 Share Posted May 26, 2023 I just wonder why they are a more bronze color and where the old ones went? Link to comment Share on other sites More sharing options...
Rare NE John Posted May 26, 2023 #12 Share Posted May 26, 2023 The Temp markings could also mean the angle of each prop blade, in engineering terms. That’s my guess. Link to comment Share on other sites More sharing options...
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