Talk:Ohio-class: Difference between revisions
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The article gives the speed, the figures coming from [http://www.navy.mil/navydata/fact_display.asp?cid=4100&tid=200&ct=4 US Navy website]. This appears to be the officially released figure, but the [http://www.fas.org/programs/ssp/man/uswpns/navy/submarines/ssgn726_ohio.html#sources FAS] lists the actual speed as 25kt. I would just add that to the article, but the website [http://www.naval-technology.com/projects/ohio/ naval-technology] gives a figure of 25+, and Jane's Fighting Ships list it as 24. How do we approach that? [[User:David Finn|David Finn]] 11:23, 23 March 2011 (UTC) | The article gives the speed, the figures coming from [http://www.navy.mil/navydata/fact_display.asp?cid=4100&tid=200&ct=4 US Navy website]. This appears to be the officially released figure, but the [http://www.fas.org/programs/ssp/man/uswpns/navy/submarines/ssgn726_ohio.html#sources FAS] lists the actual speed as 25kt. I would just add that to the article, but the website [http://www.naval-technology.com/projects/ohio/ naval-technology] gives a figure of 25+, and Jane's Fighting Ships list it as 24. How do we approach that? [[User:David Finn|David Finn]] 11:23, 23 March 2011 (UTC) | ||
:Shall we try to put it in context? There isn't much reason for these boats to be extremely fast, while there is every reason -- with a qualification I shall mention -- for them to be ultraquiet. Contrast their speeds, probably in the mid-20 knots, with the 35 knots or so of an attack boat, and the failed but interesting Soviet ALFA that was probably in the 50 knot range. I don't think we will ever have truly accurate top figures, as these are sensitive. | |||
:A limiting factor for submarine speed can be surprising: glue. If they start moving too fast, as in trying to avoid a much faster torpedo, the water drag may tear off the anechoic rubbery tiles surrounding them, which are important to quieting. There are many military situations where there is a top operational speed, and a higher, desperate emergency only, speed that will damage something. | |||
:One problem with the Ohios, at least rumors from knowledgeable sources, is that they were so quiet that with good sonars, you could listen for the background noise of the ocean -- and when you found a completely silent spot, that was the Ohio. There are rumors they now have a background noise generator as a defense. | |||
:Would you be comfortable by stating the speed is in the mid-twenty-knots range? [[User:Howard C. Berkowitz|Howard C. Berkowitz]] 16:37, 23 March 2011 (UTC) | |||
Revision as of 10:37, 23 March 2011
Speed
The article gives the speed, the figures coming from US Navy website. This appears to be the officially released figure, but the FAS lists the actual speed as 25kt. I would just add that to the article, but the website naval-technology gives a figure of 25+, and Jane's Fighting Ships list it as 24. How do we approach that? David Finn 11:23, 23 March 2011 (UTC)
- Shall we try to put it in context? There isn't much reason for these boats to be extremely fast, while there is every reason -- with a qualification I shall mention -- for them to be ultraquiet. Contrast their speeds, probably in the mid-20 knots, with the 35 knots or so of an attack boat, and the failed but interesting Soviet ALFA that was probably in the 50 knot range. I don't think we will ever have truly accurate top figures, as these are sensitive.
- A limiting factor for submarine speed can be surprising: glue. If they start moving too fast, as in trying to avoid a much faster torpedo, the water drag may tear off the anechoic rubbery tiles surrounding them, which are important to quieting. There are many military situations where there is a top operational speed, and a higher, desperate emergency only, speed that will damage something.
- One problem with the Ohios, at least rumors from knowledgeable sources, is that they were so quiet that with good sonars, you could listen for the background noise of the ocean -- and when you found a completely silent spot, that was the Ohio. There are rumors they now have a background noise generator as a defense.
- Would you be comfortable by stating the speed is in the mid-twenty-knots range? Howard C. Berkowitz 16:37, 23 March 2011 (UTC)