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Stuart666 · 09-19-17, 12:13 PM

I think it was the Victor II that was as quiet as the 637 boats, or at least so Norman Polmar says in his cold war submarines book. They subsequently made the 637 quieter through the 1970s if wikipedia was any truth by having an electrical rectification bus fitted. So if anything, they modeled the Victor II noiser than it probably was. I can buy that about the Sierra. For one thing there is data online that suggests the Akula was a good 15 decibels quieter than the Sierra, which being larger is plausible. http://www.armscontrol.ru/subs/snf/snf03221.htm http://gentleseas.blogspot.co.uk/201...ine-noise.html

Bear in mind the 688 as modelled is pretty much the 1976 model. I would expect the Flight II and Flight III to be quieter, particularly with anechoic covering. Maybe this would be worthy of another thread, but there are some details on here on the noise level of Soviet boats. http://www.dtic.mil/docs/citations/ADC010105

My own view, and its just a personal view looking at that report, and some declassified CIA reports. The sea state noise could do with being upped, perhaps to 78 decibels, in line with what that report says about sea state in the Norwegian sea. And there is a CIA report on the CIA FOIA website that suggests that up to the early 1970s, Soviet sonar systems were for the most part about half as effective as comparable US sonar systems, which suggests to me they are overmodelled. The following estimates there were fewer than 20 ships in the Soviet navy in 1971 with comparable sonar systems to the US, and most of those were compromised by having poor signal processing capabilities. https://www.cia.gov/library/readingr...ent/0005512850

I do think the devs are heading in the right direction I might add. But Id like to see nuclear weapons as an option, ie you use a Mk45 nuclear torpedo, you unlock the reds using them too. Also, be nice to be able to configure availability of torpedos at Holy loch, just to make some nice, juicy weapons particularly scarce. Incidentally, did anyone look at the Moscow class from 1968, the cryptic reference to having not 'yet' added SAM systems?

09-19-17, 12:13 PM	#44
Stuart666 Swabbie Join Date: Sep 2017 Posts: 10 Downloads: 18 Uploads: 0	I think it was the Victor II that was as quiet as the 637 boats, or at least so Norman Polmar says in his cold war submarines book. They subsequently made the 637 quieter through the 1970s if wikipedia was any truth by having an electrical rectification bus fitted. So if anything, they modeled the Victor II noiser than it probably was. I can buy that about the Sierra. For one thing there is data online that suggests the Akula was a good 15 decibels quieter than the Sierra, which being larger is plausible. http://www.armscontrol.ru/subs/snf/snf03221.htm http://gentleseas.blogspot.co.uk/201...ine-noise.html Bear in mind the 688 as modelled is pretty much the 1976 model. I would expect the Flight II and Flight III to be quieter, particularly with anechoic covering. Maybe this would be worthy of another thread, but there are some details on here on the noise level of Soviet boats. http://www.dtic.mil/docs/citations/ADC010105 My own view, and its just a personal view looking at that report, and some declassified CIA reports. The sea state noise could do with being upped, perhaps to 78 decibels, in line with what that report says about sea state in the Norwegian sea. And there is a CIA report on the CIA FOIA website that suggests that up to the early 1970s, Soviet sonar systems were for the most part about half as effective as comparable US sonar systems, which suggests to me they are overmodelled. The following estimates there were fewer than 20 ships in the Soviet navy in 1971 with comparable sonar systems to the US, and most of those were compromised by having poor signal processing capabilities. https://www.cia.gov/library/readingr...ent/0005512850 I do think the devs are heading in the right direction I might add. But Id like to see nuclear weapons as an option, ie you use a Mk45 nuclear torpedo, you unlock the reds using them too. Also, be nice to be able to configure availability of torpedos at Holy loch, just to make some nice, juicy weapons particularly scarce. Incidentally, did anyone look at the Moscow class from 1968, the cryptic reference to having not 'yet' added SAM systems?