SUBSIM Radio Room Forums



SUBSIM: The Web's #1 resource for all submarine & naval simulations since 1997

Go Back   SUBSIM Radio Room Forums > Modern-Era Subsims > Dangerous Waters > Sub Command, Fleet Command, & Jane's 688(I)
Forget password? Reset here

Reply
 
Thread Tools Display Modes
Old 06-22-08, 07:18 PM   #1
Frame57
Sea Lord
 
Join Date: May 2008
Location: 1300 feet on the crapper
Posts: 1,860
Downloads: 2
Uploads: 0
Alpha class test depth?

I have a question for the gang here. I was tinkering with the Alpha boat using SCX and noticed something a bit disappointing. The modelled boat in the game has a test depth of only 1450 feet? An Alpha on a bad day can go 900 meters! Not meaning to be picky here, but that is what those boats could do. They got the speed right. So is there a way to set these files to reflect the correct test depth?
Frame57 is offline   Reply With Quote
Old 06-23-08, 03:11 AM   #2
clive bradbury
Captain
 
Join Date: Jun 2004
Location: stoke-on-trent, UK
Posts: 492
Downloads: 105
Uploads: 0
Default

I'm not sure. You can use the database editor to change the max depth of the Alpha, currently set too shallow at -471m. But I don't know whether the SCX playable boats use that information or not. Try it out and see. If not, I could probably make a separate playable with accurate characteristics without too much trouble.
clive bradbury is offline   Reply With Quote
Old 06-24-08, 05:23 PM   #3
Frame57
Sea Lord
 
Join Date: May 2008
Location: 1300 feet on the crapper
Posts: 1,860
Downloads: 2
Uploads: 0
Default

Clive! You da man! I remember when I was a "Nub", during watch as helmsman/planesman the COW remarked how the Alpha's were very deep diving and fast. I was always fascinated with the spec's of the boat. The buzz back then @ 1979 was that they were strong because of the titanium allow hull, but were "brittle". So they allegedly only allowed the Alpha's so many deep dives. But I have learned that the problem really was in their welding technology and not the alloy itself. But since then this "britlle" issue has subsided as their ability to weld the allow properly came into fruition.When i look at an Alpha it gives me the shivers. There is something ominous about that boat.
Frame57 is offline   Reply With Quote
Old 06-25-08, 05:47 AM   #4
Kapitan
Sub Test Pilot
 
Kapitan's Avatar
 
Join Date: Mar 2005
Location: UK + Canada
Posts: 7,083
Downloads: 65
Uploads: 7


Default

very bad misconception about the alfa it was made for speed and average diving capabilities, its acctual test depth is 700 meters and its crush depth is 750meters this is the real alfa project 705 and 705K.

They are small and nice boats fast but noisey i have been on K123 in gremikha she is all but stripped but you do get a sence that this is one powerful boat but it does have some wierd ass limits.

a captain who i spoke to who was on tests with an alfa in 1995 when they reactivated one for specialist high speed tests told me that if your at flank speed 45 knots and you turn full rudder the submarine could flip over.

the misconception was made by american engineers guessing its design parameters yes it was made with titanium so they said easy 900 meters it was backed up later by tom clancys hunt for red october however at the end of the cold war with many of the older submarines being decomissioned it was revealed they could only go down to 700 meters.

The sierra class can achieve 35 knots and dive to 850 meters (deepest diving submarine in the world still in commission)

The mike class was misconcieved to, the americans believed it hasa new ever more powerful power plant that previous submarines giving it a top speed of 38+ knots the only thing they got right was its diving depth of 1020 meters yet the submarine crushes at 5,100 feet its a shame that in 1989 she was lost with most of her crew it would have made an excellent boat no torpedo in the world could touch it.

It wasnt untill 2000 they released some data on the mike and her powerplant that the americans realised that infact she had the same reactor systems as previous boats meaning she could reach 35 knots on a good day.
__________________
DONT FORGET if you like a post to nominate it by using the blue diamond



Find out about Museum Ships here: https://www.museumships.us/

Flickr for all my pictures: https://www.flickr.com/photos/131313936@N03/

Navy general board articles: https://www.navygeneralboard.com/author/aegis/
Kapitan is offline   Reply With Quote
Old 06-25-08, 06:32 AM   #5
Kapitan
Sub Test Pilot
 
Kapitan's Avatar
 
Join Date: Mar 2005
Location: UK + Canada
Posts: 7,083
Downloads: 65
Uploads: 7


Default

Project 705 and 705K lira NATO code name alfa

A small submarine built entirely for speed and average diving depths she is made of a light wieght titanium alloy which will enable her to submerge to a maximum depth of 750 meters, he light wieght construction small size and wieght means she can atain speeds of 45 knots far faster than many western submarines.

The submarines have just six compartments two of which are mainly manned control room and also engineering space to the rear, its only when at battle stations does compartment one get manned.

there are seven of the class 2 have been dismantled one is in active service still as a testing platform and the others are laid up at bolshya lopatka (near zapadny litsa the test ship is based in gremikha).

At the fall of the soviet union all but one was in service all units were liad up by 1992 however one was briefly reactivated in 1995 for testing but since been mothballed and one was re activated in 1995 and remains active as a test platform.

Specification:

Length: 82 meters long
Width: 9.5 meters
Draft: 7.6 meters
Top speed 45.2 knots
Displacement: 2,300 tonnes surfaced / 3,500 tonnes submerged
Crew: 30 to 45
Maximum diving depth: 750 meters
Hull: titanium alloy

Designed by design station 193 malakhit st petersburg chief designer Mikhail Rusanov

Re fitted to carry SS-N-15 Starfish torpedos in the 1980's (nuclear torpedos like subroc)

All of the class were stationed in Bolshya Lopatka along with submarines like the Typhoon and Oscar II class

Built at the ship yards in st petersburg and Severmorsk

K-337 sufferd a reactor accident in 1972 the liquid metal leaked from the reactor the submarine was never put to sea again instead it was dismatled her reactor compartment remains at the sadya bay nuclear storage facility.

Alfas were built between 1974 and 1977 seven were built but construction was terminated as the hulls were found to be too expencive to mass produce, they were designed to be interceptor submarines rather than a pure ASW or ASuW submarine meaning they were designed to get to a point fast shoot and run away unlike the akula or victor III which were pure attack submarines.

Reactor of the alfa:

Known as OK-550 its lead/bismuth cooled however the draw back to this is should the reactor temprature fall below 125*c the solution solidifies shutting down the reactor and causing the reactor never to function again four submarines sifferd this problem.
In the early years shore based facilities kept the reactors warm however the reliability of these installations was not garenteed so they decided the reactor should remain online even when in port, the reactors had a life span of 25 years so this wasnt a problem however it did make engineering and over hauls nearly impossible as the live reactor had to be shut down in order to carryout routine maintinance.
The issue came to light after one submarines coolant leaked causing the solution to solidify and freezing the reactor she was later taken out of service and scrapped, but the reactor unit remains in sadya bay on the kola peninsular.
__________________
DONT FORGET if you like a post to nominate it by using the blue diamond



Find out about Museum Ships here: https://www.museumships.us/

Flickr for all my pictures: https://www.flickr.com/photos/131313936@N03/

Navy general board articles: https://www.navygeneralboard.com/author/aegis/
Kapitan is offline   Reply With Quote
Old 06-25-08, 10:43 AM   #6
Frame57
Sea Lord
 
Join Date: May 2008
Location: 1300 feet on the crapper
Posts: 1,860
Downloads: 2
Uploads: 0
Default

I would love to tour one of those boats. Maybe one day when i fully retire.... I have an Idea for the Mike boat. We have trained (allegedly dolphins to do various tasks.) How about we train Blue whales to track Submarines and stap a nice warhead on them. They should be able to dive deep enough. This is why i am for a nuke that can light off even remotely close to a deep water boat like the Mike and still take care of business.
Frame57 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 05:46 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright © 1995- 2024 Subsim®
"Subsim" is a registered trademark, all rights reserved.