To: [email removed]
From: [email removed] (Stephen D Smith)
Subject: Ship design from Scott Kellogg 11/27/90
Organization: personal mailbox at The Next Challenge
Well, three days have passed and no one has objected to posting
more of Scott Kellogg's designs. (In fact there has been no
comment,except for the moderators.) So here is *A* ship design.
I'll keep each posting small, so as not to disturb anyone too much,
and not more than one per day. Again I only get together with Scott
every two or three weeks, so feel free to contact him directly if
speed is important.
*********************************************************
I have no access to e-mail so you will not be able to
reach me very easily and there will be long gaps between
my having access to any comments to any designs or ideas
you might have but I would appreciate it
Scott Kellogg [phone removed]
[address removed]
*********************************************************
Attack Submarine TL8 "Alfa" Class
CraftID: Attack Submarine, Type SSN, TL8, MCr 87.46709
Hull: (225/563) Disp=250, Config=1AF, Armor=41C,
Unload=2556.171t, Load=2631t, Dived=3375t,
SafeDepth=900m, CrushDepth=1350m
Power: (24/31) 462Mw Fission, Dur=2yrs
Loco: (46/62) Single Screw, DiveTop=80Kph, DiveCruise=60kph,
Surface=36kph,
Commo: Radio=Cont*1, Reg*3, RadioJamm=Cont*2
Sensors: Active Audio*2, Passive Audio*20, Magnetic Sensor*2,
Radiation Sensor*2, Environmental Sensor*2,
AllWeatherRADAR=Reg*2, RDF, Image Enhance*2, Passive
IR*2, AdvActive IR*2, Headlight*2, Video Camera*2,
RadarJamm=Reg*2
ActObjScn=Diff ActObjPin=Diff ActAudScn=Form
ActAudPin=Form PasAudScn=Form PasAudPin=Form
PasEngScn=Diff
Off: 533mm Torpedo Tubes*6
Max Chance
Rnds Warhead Range Speed Hit%
Torpedo C 16 300kg 15km 92kph 65%
Torpedo C Nuc 2 20kton 15km 65kph
SS-N-15 2 15kton 37km 2100kph
The type C is a wire guided torpedo.
The SS-N-15 is a tube launched missile carried depth charge. SS-
N-15 Minimum range is 9km
Def: DefDM=+4 Clusterguard Anechoic coating, Titanium
Hull reduces magnetic signature
Control: Computer=2fib*3, ElectronicLink=670, Electronic Circuit
Protect,
Accom: Crew=45, SmallStateroom=7, Bunks=38 Env=Basic Env, Basic
is, Extend is, AirLock*2
Other: Fuel=.924Kl Fissiles, Mag=30Kl, 20 rds, (2 mines can be
carried in place of one torpedo) Telescopicmasts*5,
Electronic sensors mounted on masts, Cargo=33.054Kl,
ObjSize=Avg, EMlevel=Faint
Remarks: For those of you who don't know, the 'Alfa' class attack
sub is featured in 'The Hunt for Red October' as one attacks the
main characters in the climax of the story. (Great Book!
Excellent Film!)
Here is a question, how well would a densitometer see a
submarine? It has roughly the same density as the medium around
it, and when a densitometer has a penetration of 250 meters, is
that in vapor, or liquid or solid? Vacuum and air I would say are
probably negligible, but what about water?
This is nearly a pure guess. I reviewed George Herbert's
guidelines for sub building but I found that the MegaTrav rules
just aren't up to building a real submarine unless there is
something seriously wrong with my calculator. George suggests that
a sub should be able to safely dive to 10 meters times it's armor
rating. Well, while I have no reason to doubt him, it is
impossible to get the 'Alfa' down to the depths it is supposed to
be able to reach. This may be due to the fact that the real thing
has a titanium hull and MegaTrav does not cover that. Where the
numbers don't add up I have deferred to reality. ie the Alfa is
said to reach 900 meters safely. The above should reach only half
that. Basically, I used the weight of the sub as my main
guideline. She displaces approximately 3375 metric tons dived and
approx 2630 metric tons surfaced. Oops, make that 'He' (Russian
ships are masculine)
Supposedly, The real sub has a 462MW Fission reactor. Rob Dean
gave the guidelines for the transmission (2*tracked of same TL w/no
suspension). George Herbert's formula for submarine speeds gave
the approximate speed the 'Alfa' is supposed to have.
The passive sonar array is again a guess, so I threw out a
number: 10 sensors in an array, 20 for 2 arrays. For Periscopes
I used heavy robot arms with double the weight and volume and
price.
I got the performance numbers from GDW's Harpoon, and "Modern
Submarine Warfare" by David Miller and John Jordan, Salamander
Books '87. The 'Alfa' has the above listed reactor, speeds,
weapons and compliment. All the rest is Scotty playing with
numbers.
Torpedo tubes? Pure speculation but here is what I used:
Cost=1.5MCr, Power=0.5 MW, Volume=3Kl, Weight=6tons
Torpedo=1.5Kl.
I realize this is full of holes, but for what it's worth, here
it is. I would greatfully appreciate any input.
Scott Kellogg
P.S. Going over this design has made me appreciate just how
inadequate the design rules are in giving the full feel of a ship.
The rules go down to devices costing tens of credits, tenths of
liters, hundreds of watts, and tenths of kilograms. Previously,
this prompted me to think that if a device isn't listed it just
ain't there. When craft cost in units of millions it's easy to
just say, "Sure! You must have several airlocks on board." But
when you look in the listed craft description there are usually a
lot of omissions of components you would have taken for granted.
Now I'm more of a mind to take craft descriptions as general
guidelines, not gospel.
Stephen D Smith USENET: [email removed]
BIX: sdsmith
- - --Name = STEPHEN SMITH Mailbox # = 68