Talk:Brazilian battleship São Paulo

message: Photo in template: what was the purpose of 10-hour clock dial on top of the mast? NVO (talk) 15:44, 26 April 2009 (UTC)
replies: text: (a) I've been wondering the same thing for quite some time now. :-) (b) That may not even be São Paulo; last night I went hunting and I found a site that calls in Minas Geraes, and I'm inclined to agree—the ship looks like it has only one funnel, which would make it Minas Geraes in the 30s or after. —Ed 17 (Talk / Contribs) 16:16, 26 April 2009 (UTC)
replies: text: I was reading a part of Conway's 1906, p. 111, about U.S. Navy capital ships and it was talking about improvements made to dreadnoughts after the Great White Fleet cruise and after Grand Fleet operations during WWI. One of the areas U.S. ships were improved was in communication amongst ships in a squadron or fleet "by means of range 'clocks'". No further explanation in Conway's that I saw, but I suppose that's what that is, especially considering São Paulos post-WWI refit. I don't know where one would look for more info on range 'clocks'. Maybe U.S. battleship books? — Bellhalla (talk) 14:33, 28 April 2009 (UTC)
replies: text: Way to go Bellhalla! In the caption for two images of , Friedman in U.S. Battleships; A Design History says "...its range "clock" (concentration dial), for communication the range to other ships. A similar clock was mounted on the mainmast [note, that was for WV. I've only seen one on Geraes or Paulo]. Both could be rotated so they could be visible to ship not exactly in line ahead." —Ed 17 (Talk / Contribs) 23:26, 2 May 2009 (UTC)
replies: text: Well, it wasn't some sort of research coup… it was kind of accidental. You know how when you learn a new word and then you hear it or read it several times the same day? This was just like that: I had read this discussion and then a couple of days later read the phrase "range 'clock that I would have glossed over had I not read this… But, I'm glad I could help shed a little light on the msytery! — Bellhalla (talk) 10:01, 3 May 2009 (UTC)
replies: text: Oh well, at least no one dared to use in real combat... Imagine Beatty semaphoring Jellicoe over Jutland distances with this thing :)) NVO (talk) 17:59, 4 May 2009 (UTC)
replies: text: LOL. We'd probably be talking about "the great naval battle of the Great War where the completely outnumbered Germans won the day" then. ;) —Ed 17 (Talk / Contribs) 22:57, 4 May 2009 (UTC)

text: Late, but I think you may find they were used. They were not meant to signal range over long distances but only within the battle line. They were associated with bearing marks on turrets (Tennessee (BB-43) photographed in 1922). So, in the days before tight electronic communication (Morse no less), these enabled a ship with target obscured or even damage to its control system to take a cue for laying guns based on ships visible ahead or astern signaling the range and bearing of their fire control. Remember, ships of the time also used dye in the shells so that waterspouts would show which ship fired the shell. Thus, though I've never read an account, the ship seeing their red spouts overshooting and astern of the target might "cheat" on the ship ahead's blue straddle. An application of simple, visual methods before modern radio to concentrate fire and get more effective hits. Palmeira (talk) 21:42, 1 June 2015 (UTC)
thread_title: Clock dial on the mast?

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thread_title:  External links modified 

message: --2A02:C7F:2C12:5E00:DCF4:C6A7:76F:DADD (talk) 12:33, 27 December 2017 (UTC)
thread_title:  What a sad story for this ship! 

message: Is this the official term? Or would 'de(-)listing' be more appropriate?
The link for 'stricken' (in one of the uses) leads to a disambiguation page) Jackiespeel (talk) 18:13, 27 December 2017 (UTC)
thread_title:  Use of 'stricken from the register'