Deflection: Difference between revisions

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Deflection is an ambiguous term in many sources covering the World War I period, especially British ones owing to the twisted etymology of the word.
Deflection is an ambiguous term in many sources covering the World War I period, especially British ones owing to the twisted etymology of the word.


Be careful when contemporary British sources use the word "deflection", as it might mean either [[Speed-across|speed-across]] or [[Lateral Aim-off|lateral aim-off]] depending on the context.
Be careful when contemporary British sources use the word "deflection", as it might mean either [[Speed-across|speed-across]] or [[Gun Deflection|gun deflection]] depending on the context.


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{|border="2" cellpadding="2" cellspacing="0" style="color:white; margin: 0 0 1em 0.5em; background: crimson; border: 1px #aaa solid; border-collapse: collapse; font-size: 95%;" width="300"
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!style="color: black; height: 30px; background: #f9f9f9;"| "Dumaresq Deflection"
!style="color: black; height: 30px; background: #f9f9f9;"| "Dumaresq Deflection"
!style="color: black; height: 30px; background: #f9f9f9;"| Speed-across
!style="color: black; height: 30px; background: #f9f9f9;"| Speed-across
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==Torpedo Control Usage==
 
To make matters even worse, when "deflection" is spoken of in the sense of how to set a [[Torpedo Deflection Sight]] or similar device, they are generally speaking of the speed-across attributable to only the movement of the target vessel, discounting that attributable to movement of own ship.  On this site, you may find that I employ my own term to make this distinction explicit:  [[Torpedo Deflection]].
 
==See Also==
* [[Dumaresq Deflection]]
* [[Gun Deflection]]
* [[Torpedo Deflection]]


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[[Category:Fire Control]]

Latest revision as of 19:17, 15 March 2011

Deflection is an ambiguous term in many sources covering the World War I period, especially British ones owing to the twisted etymology of the word.

Be careful when contemporary British sources use the word "deflection", as it might mean either speed-across or gun deflection depending on the context.

When a British source says... ...it means
"Deflection" (ambiguous)
"Gun Deflection" Lateral Aim-off
"Sight Deflection" Lateral Aim-off
"Dumaresq Deflection" Speed-across

Torpedo Control Usage

To make matters even worse, when "deflection" is spoken of in the sense of how to set a Torpedo Deflection Sight or similar device, they are generally speaking of the speed-across attributable to only the movement of the target vessel, discounting that attributable to movement of own ship. On this site, you may find that I employ my own term to make this distinction explicit: Torpedo Deflection.

See Also