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1

Thursday, September 18th 2014, 3:21am

Russian Ships for 1945

I've scrapped fifteen Russian cruisers (albeit very obsolete ones) over the last few sim reports, and some new cruisers need to be ordered in replacement. I originally envisioned a repeat of the earlier Admiral Putiatin-class (9x6"), but the design evolved and grew quite a bit. I simmed the 152mm guns as automatics and gave them miscellaneous weight as such; but I only intend them as equivalents of the historical Bofors 15.2 cm/53 Model 1942, with a marginally improved rate of fire over regular non-automatic guns. The only real difference from past guns is an increase in elevation to permit limited engagement of aerial targets. Protection is a bit lower than normal for ships of his size, but the armour suite is pretty much identical to the preceding Putiatin-class.

Finances limit me to two ships each in 1945 and 1946.

Quoted

Avrora-class, Russian Light Cruiser laid down 1945

Displacement:
8,250 t light; 8,736 t standard; 10,194 t normal; 11,361 t full load

Dimensions: Length overall / water x beam x draught
609.36 ft / 590.55 ft x 55.77 ft x 19.69 ft (normal load)
185.73 m / 180.00 m x 17.00 m x 6.00 m

Armament:
8 - 5.98" / 152 mm guns (4x2 guns), 123.46lbs / 56.00kg shells, 1945 Model
Automatic rapid fire guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
8 - 3.94" / 100 mm guns (4x2 guns), 37.48lbs / 17.00kg shells, 1945 Model
Automatic rapid fire guns in deck mounts with hoists
on side, all amidships
32 - 1.46" / 37.0 mm guns (8x4 guns), 1.55lbs / 0.70kg shells, 1945 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread, all raised mounts
8 - 0.55" / 14.0 mm guns (4x2 guns), 0.08lbs / 0.04kg shells, 1945 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 1,338 lbs / 607 kg
Shells per gun, main battery: 350

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.15" / 80 mm 383.86 ft / 117.00 m 8.96 ft / 2.73 m
Ends: Unarmoured
Main Belt covers 100 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.94" / 100 mm 1.97" / 50 mm 2.76" / 70 mm
2nd: 0.98" / 25 mm 0.20" / 5 mm 0.79" / 20 mm
3rd: 0.98" / 25 mm 0.20" / 5 mm -
4th: 0.59" / 15 mm 0.20" / 5 mm -

- Armour deck: 1.97" / 50 mm, Conning tower: 3.15" / 80 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 80,429 shp / 60,000 Kw = 32.46 kts
Range 9,000nm at 18.00 kts
Bunker at max displacement = 2,625 tons

Complement:
506 - 659

Cost:
£4.955 million / $19.819 million

Distribution of weights at normal displacement:
Armament: 171 tons, 1.7 %
Armour: 1,615 tons, 15.8 %
- Belts: 449 tons, 4.4 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 262 tons, 2.6 %
- Armour Deck: 872 tons, 8.6 %
- Conning Tower: 32 tons, 0.3 %
Machinery: 2,031 tons, 19.9 %
Hull, fittings & equipment: 4,057 tons, 39.8 %
Fuel, ammunition & stores: 1,944 tons, 19.1 %
Miscellaneous weights: 375 tons, 3.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
16,436 lbs / 7,455 Kg = 153.4 x 6.0 " / 152 mm shells or 1.9 torpedoes
Stability (Unstable if below 1.00): 1.15
Metacentric height 2.7 ft / 0.8 m
Roll period: 14.3 seconds
Steadiness - As gun platform (Average = 50 %): 61 %
- Recoil effect (Restricted arc if above 1.00): 0.54
Seaboat quality (Average = 1.00): 1.35

Hull form characteristics:
Hull has low quarterdeck
and transom stern
Block coefficient: 0.550
Length to Beam Ratio: 10.59 : 1
'Natural speed' for length: 27.47 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 45
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26.90 ft / 8.20 m
- Forecastle (25 %): 24.61 ft / 7.50 m
- Mid (50 %): 22.31 ft / 6.80 m
- Quarterdeck (15 %): 14.76 ft / 4.50 m (22.31 ft / 6.80 m before break)
- Stern: 14.76 ft / 4.50 m
- Average freeboard: 22.27 ft / 6.79 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 84.0 %
- Above water (accommodation/working, high = better): 205.3 %
Waterplane Area: 23,938 Square feet or 2,224 Square metres
Displacement factor (Displacement / loading): 137 %
Structure weight / hull surface area: 97 lbs/sq ft or 475 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.91
- Overall: 1.01
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily

Breakdown of Miscellaneous Weights:
- 108 tons for 152mm gun-loading equipment
- 44 tons for 100mm automatic gun equipment
- 223 tons for other equipment

Ships in Class:
- Avrora: Laid down in Petrograd January 1945, completed June 1946.
- Pallada: Laid down in Petrograd January 1945, completed June 1946.
- Nadezhda: Laid down in Petrograd January 1946, completed June 1947.
- Evstafii: Laid down in Petrograd January 1946, completed June 1947.

2

Thursday, September 18th 2014, 3:26am

Looks to be a rather neat package; nothing too expensive or over-the-top, and given the number of older cruisers you need to replace, a good economical choice. The construction time is not too excessive either - somewhat under 18 months.

3

Thursday, September 18th 2014, 3:35am

It makes sense to scrap the old stuff, and I approve of Avrora. I can't help but feel the ship's under-armored, though. It's a pretty thin and short belt.

4

Thursday, September 18th 2014, 3:39am

Russia's got a few aging fleet oilers - four Betelgeuse-class ships from 1919 and eight Rigels from 1924. AdmK started work on a group of "ice-capable oilers", of which two ships are currently building. These ships are built with 100% tonnage due to their limited ice-breaking capabilities. I'm going to build two more of that class in 1945 - a handy capability to have in certain situations - but I'm also going to build the Elbrus class alongside Kola-class ships. These have more capacity for oil and other stores, shall replace the Betelgeuse class, and be significantly cheaper than Kola-class ships.

Quoted

Elbrus-class, Russian Replenishment Ship laid down 1945

Displacement:
9,962 t light; 10,645 t standard; 31,783 t normal; 48,694 t full load

Dimensions: Length overall / water x beam x draught
656.17 ft / 656.17 ft x 82.02 ft x 34.45 ft (normal load)
200.00 m / 200.00 m x 25.00 m x 10.50 m

Armament:
8 - 2.95" / 75.0 mm guns (4x2 guns), 15.43lbs / 7.00kg shells, 1945 Model
Anti-aircraft guns in deck mounts
on centreline ends, evenly spread, 2 raised mounts - superfiring
16 - 1.46" / 37.0 mm guns (4x4 guns), 1.55lbs / 0.70kg shells, 1945 Model
Anti-aircraft guns in deck mounts
on side, all amidships
16 - 0.55" / 14.0 mm guns (4x4 guns), 0.08lbs / 0.04kg shells, 1945 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 150 lbs / 68 kg
Shells per gun, main battery: 500

Machinery:
Oil fired boilers, steam turbines plus diesel motors,
Geared drive, 2 shafts, 28,833 shp / 21,509 Kw = 20.00 kts
Range 100,000nm at 15.00 kts
Bunker at max displacement = 38,049 tons

Complement:
1,189 - 1,547

Cost:
£3.207 million / $12.828 million

Distribution of weights at normal displacement:
Armament: 16 tons, 0.1 %
Machinery: 728 tons, 2.3 %
Hull, fittings & equipment: 6,518 tons, 20.5 %
Fuel, ammunition & stores: 21,821 tons, 68.7 %
Miscellaneous weights: 2,700 tons, 8.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
177,825 lbs / 80,660 Kg = 13,814.6 x 3.0 " / 75 mm shells or 17.8 torpedoes
Stability (Unstable if below 1.00): 1.70
Metacentric height 8.9 ft / 2.7 m
Roll period: 11.5 seconds
Steadiness - As gun platform (Average = 50 %): 82 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 1.72

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.600
Length to Beam Ratio: 8.00 : 1
'Natural speed' for length: 25.62 kts
Power going to wave formation at top speed: 36 %
Trim (Max stability = 0, Max steadiness = 100): 48
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 28.18 ft / 8.59 m
- Forecastle (20 %): 17.95 ft / 5.47 m
- Mid (50 %): 17.95 ft / 5.47 m
- Quarterdeck (15 %): 17.95 ft / 5.47 m
- Stern: 17.95 ft / 5.47 m
- Average freeboard: 18.77 ft / 5.72 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 19.0 %
- Above water (accommodation/working, high = better): 113.2 %
Waterplane Area: 39,363 Square feet or 3,657 Square metres
Displacement factor (Displacement / loading): 742 %
Structure weight / hull surface area: 108 lbs/sq ft or 529 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.15
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

- Elbrus
- Krestovsky
- Livadiyskaya
- Narodnaya

5

Thursday, September 18th 2014, 3:45am

These would certainly be very capable ships. The only concern I would have would be their rather heavy AA outfit - those guns would take up a lot of deck space and could - conceivably - interfere with RAS activities. Personally, I would reduce the number of guns and concentrate them fore and aft, but that's just me.

6

Thursday, September 18th 2014, 4:30am

It makes sense to scrap the old stuff, and I approve of Avrora. I can't help but feel the ship's under-armored, though. It's a pretty thin and short belt.

Admittedly so, yes. The design proved a little larger than I expected, and due to budget I am reluctant to make it larger just to expand the armour. Even so, it's about as much armour as was applied to the De Zeven Provincien-class light cruisers and the Admiral Hipper-class heavy cruisers in this approximate period - though their armour might have covered a bit more of the ship.

I haven't decided where to deploy the Avroras yet. Most of my retired cruisers have come from the Baltic and Black Sea fleets, and so in theory I should replace them... but in such constricted waters, I don't really have an interest in deploying anything larger than coast-defense ships and torpedo cruisers. That being the case, Avrora will likely end up in the screening forces of Northern Fleet with other lightly-armoured cruisers like the Saratovs and the Tambovs.

7

Thursday, September 18th 2014, 7:14pm

Quoted

I can't help but feel the ship's under-armored, though. It's a pretty thin and short belt.

Nah, that is just your imagination. :)

Quoted

These ships are built with 100% tonnage due to their limited ice-breaking capabilities.

*looks at sim* ... what limited ice-breaking capabilities?

8

Friday, September 19th 2014, 12:39pm

The cruiser design looks ok to me. I'm a fan of relatively inexpensive light cruisers like these. As long as the belt covers the vitals then its ok. No point wasting armour to protect the captain's pantry and the stoker's heads if you don't need too!


I think Brock is referring to the Kola Class as having the icebreaking capabilities. The Elbrus are cheaper non-ice breaking tankers to bulk out the tanker fleet.
The AA armament does seem a bit hefty to me though.

9

Friday, September 19th 2014, 6:36pm

Quoted

I'm a fan of relatively inexpensive light cruisers like these.

Depends on what you call inexpensive. Having built a few smaller ones, I actually think that 8250 is expensive (with standard being 8736 it is actually heavier (thus more expensive) than the light cruisers that could be build during the Cleito Treaty period.

Quoted

As long as the belt covers the vitals then its ok. No point wasting armour to protect the captain's pantry and the stoker's heads if you don't need too!

I agree... *goes to check with SS* ... 2.73 meters is the baseline height that SS gives when you press the 'default' button. There is still 0.01 hull strength left so it is possible to bump the height up to 3.1 meters but I think that 'default' is adequate.

Quoted

I think Brock is referring to the Kola Class as having the icebreaking capabilities.

... must be the lack of sleep... sorry. >_<


edit: having quickly simmed the Avrora, is there a reason why all the 37mm and 14mm are raised. Considering the "on side, evenly spread" option used, I would think that some of the guns would be fore or aft of the superstructure thus more likely to be on deck level and not in a raised position. Hull strength-wise I don't think it matters that much though as the guns aren't really big.

10

Saturday, September 20th 2014, 9:50am

I used to aim for around 7,200-7,500 tons for a decent 9x6 CL but given the extra weight of automatics and electronics I think a gain of 1,000 tons in a decade is not too bad. My Northumberland CA based 12x6in doodle exercise came in at 12,000+ tons, shows how big a CL can get.

11

Sunday, September 21st 2014, 3:21pm

Quoted

I'm a fan of relatively inexpensive light cruisers like these.

Depends on what you call inexpensive. Having built a few smaller ones, I actually think that 8250 is expensive (with standard being 8736 it is actually heavier (thus more expensive) than the light cruisers that could be build during the Cleito Treaty period.

I call it inexpensive because it's cheaper than what I usually design. :P

Quoted

I'm a fan of relatively inexpensive light cruisers like these.
edit: having quickly simmed the Avrora, is there a reason why all the 37mm and 14mm are raised. Considering the "on side, evenly spread" option used, I would think that some of the guns would be fore or aft of the superstructure thus more likely to be on deck level and not in a raised position. Hull strength-wise I don't think it matters that much though as the guns aren't really big.

Some of the guns probably could me located on the deck level, but my thought when I was simming was to put the secondaries on the deck level, and have the tertiary 37mm and 14mm guns raised, firing over them.

12

Sunday, September 21st 2014, 5:00pm

Quoted

I call it inexpensive because it's cheaper than what I usually design. :P

I called them expensive because the last three light cruiser classes for Japan are in the 4000-6000 range. :)

Quoted

Some of the guns probably could me located on the deck level, but my thought when I was simming was to put the secondaries on the deck level, and have the tertiary 37mm and 14mm guns raised, firing over them.

I could be wrong, but the way you describe that tells me that the 37mm and 14mm guns are more likely to be "on side, all amidships" and not "on side, evenly spread"...

HoOmAn

Keeper of the Sacred Block Coefficient

  • Send private message

13

Monday, September 22nd 2014, 11:43pm

Well, I don't think 80mm of armor is not enough. That plate thickness is pretty much spot on to defeat an incoming 15cm shell at most realistic battle ranges if not fired from a very high-velocity gun or made super-heavy. Usually you will not hit that plate at a 90 deg angle and that helps a lot. Back in the early days of this sim LordArpad and I ran some lengthy calculations with facehard and biggun discussing the issue, and it turned out a 80mm plate will do just fine under most circumstances. Of course, if weight restriction allow more armor - go with it. But you should not dismiss an 80mm plate easily as too thin.

(Because of those calculations I decided to go with 80mm barbets and CT (if any) on the RSAN Aurora, Douala II, Ajax and Antenor classes. I consider those barbets pretty save in CL vs. CL combat.)

14

Thursday, September 25th 2014, 6:17am

Decided to take a stab at some river merchant vessels. I figure ships like these are able to access most of the Russian river and canal system, which is extensive.

Quoted

Moskva-class, Russian River Freighter laid down 1945

Displacement:
2,029 t light; 2,097 t standard; 3,433 t normal; 4,501 t full load

Dimensions: Length overall / water x beam x draught
347.67 ft / 344.49 ft x 44.29 ft x 10.50 ft (normal load)
105.97 m / 105.00 m x 13.50 m x 3.20 m

Machinery:
Diesel Internal combustion motors,
Geared drive, 1 shaft, 1,475 shp / 1,100 Kw = 12.00 kts
Range 36,250nm at 12.00 kts
Bunker at max displacement = 2,403 tons

Complement:
223 - 291

Cost:
£0.527 million / $2.107 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 37 tons, 1.1 %
Hull, fittings & equipment: 992 tons, 28.9 %
Fuel, ammunition & stores: 1,404 tons, 40.9 %
Miscellaneous weights: 1,000 tons, 29.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
10,667 lbs / 4,838 Kg = 98.8 x 6 " / 152 mm shells or 3.3 torpedoes
Stability (Unstable if below 1.00): 1.23
Metacentric height 2.2 ft / 0.7 m
Roll period: 12.6 seconds
Steadiness - As gun platform (Average = 50 %): 76 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 1.44

Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.750
Length to Beam Ratio: 7.78 : 1
'Natural speed' for length: 18.56 kts
Power going to wave formation at top speed: 27 %
Trim (Max stability = 0, Max steadiness = 100): 53
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 18.04 ft / 5.50 m
- Forecastle (15 %): 18.04 ft / 5.50 m (9.84 ft / 3.00 m aft of break)
- Mid (50 %): 9.84 ft / 3.00 m
- Quarterdeck (15 %): 9.84 ft / 3.00 m
- Stern: 9.84 ft / 3.00 m
- Average freeboard: 11.07 ft / 3.38 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 36.6 %
- Above water (accommodation/working, high = better): 107.4 %
Waterplane Area: 12,780 Square feet or 1,187 Square metres
Displacement factor (Displacement / loading): 319 %
Structure weight / hull surface area: 58 lbs/sq ft or 285 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.16
- Longitudinal: 0.96
- Overall: 1.01
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily


Quoted

Anton Chekhov-class, Russian River Cargo/Passenger Motorship laid down 1945

Displacement:
724 t light; 744 t standard; 1,023 t normal; 1,246 t full load

Dimensions: Length overall / water x beam x draught
216.15 ft / 213.25 ft x 39.37 ft x 6.56 ft (normal load)
65.88 m / 65.00 m x 12.00 m x 2.00 m

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 1,389 shp / 1,036 Kw = 14.00 kts
Range 14,250nm at 12.00 kts
Bunker at max displacement = 502 tons

Complement:
89 - 117

Cost:
£0.209 million / $0.836 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 35 tons, 3.4 %
Hull, fittings & equipment: 339 tons, 33.1 %
Fuel, ammunition & stores: 299 tons, 29.3 %
Miscellaneous weights: 350 tons, 34.2 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
3,221 lbs / 1,461 Kg = 29.8 x 6 " / 152 mm shells or 1.6 torpedoes
Stability (Unstable if below 1.00): 1.27
Metacentric height 1.9 ft / 0.6 m
Roll period: 12.0 seconds
Steadiness - As gun platform (Average = 50 %): 88 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 1.76

Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.650
Length to Beam Ratio: 5.42 : 1
'Natural speed' for length: 14.60 kts
Power going to wave formation at top speed: 46 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 16.40 ft / 5.00 m
- Forecastle (20 %): 16.40 ft / 5.00 m (9.84 ft / 3.00 m aft of break)
- Mid (50 %): 9.84 ft / 3.00 m
- Quarterdeck (15 %): 9.84 ft / 3.00 m
- Stern: 9.84 ft / 3.00 m
- Average freeboard: 11.15 ft / 3.40 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 49.5 %
- Above water (accommodation/working, high = better): 135.5 %
Waterplane Area: 6,432 Square feet or 598 Square metres
Displacement factor (Displacement / loading): 244 %
Structure weight / hull surface area: 40 lbs/sq ft or 195 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 1.94
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, rides out heavy weather easily


A chunk of fuel is actually low-stowed cargo; didn't calculate the exact amounts.

15

Sunday, September 28th 2014, 3:35pm

Updated the Avrora design. Increased the barbettes to 80mm, and raised the belt a bit farther.

Quoted

Avrora-class, Russian Light Cruiser laid down 1945

Displacement:
8,250 t light; 8,736 t standard; 10,194 t normal; 11,361 t full load

Dimensions: Length overall / water x beam x draught
609.36 ft / 590.55 ft x 55.77 ft x 19.69 ft (normal load)
185.73 m / 180.00 m x 17.00 m x 6.00 m

Armament:
8 - 5.98" / 152 mm guns (4x2 guns), 123.46lbs / 56.00kg shells, 1945 Model
Automatic rapid fire guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
8 - 3.94" / 100 mm guns (4x2 guns), 37.48lbs / 17.00kg shells, 1945 Model
Automatic rapid fire guns in deck mounts with hoists
on side, all amidships
32 - 1.46" / 37.0 mm guns (8x4 guns), 1.55lbs / 0.70kg shells, 1945 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread, all raised mounts
8 - 0.55" / 14.0 mm guns (4x2 guns), 0.08lbs / 0.04kg shells, 1945 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 1,338 lbs / 607 kg
Shells per gun, main battery: 350

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.15" / 80 mm 383.86 ft / 117.00 m 9.25 ft / 2.82 m
Ends: Unarmoured
Main Belt covers 100 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.94" / 100 mm 1.97" / 50 mm 3.15" / 80 mm
2nd: 0.98" / 25 mm 0.20" / 5 mm 0.79" / 20 mm
3rd: 0.98" / 25 mm 0.20" / 5 mm -
4th: 0.59" / 15 mm 0.20" / 5 mm -

- Armour deck: 1.97" / 50 mm, Conning tower: 3.15" / 80 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 80,429 shp / 60,000 Kw = 32.46 kts
Range 9,000nm at 18.00 kts
Bunker at max displacement = 2,625 tons

Complement:
506 - 659

Cost:
£4.955 million / $19.819 million

Distribution of weights at normal displacement:
Armament: 171 tons, 1.7 %
Armour: 1,653 tons, 16.2 %
- Belts: 464 tons, 4.6 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 285 tons, 2.8 %
- Armour Deck: 872 tons, 8.6 %
- Conning Tower: 32 tons, 0.3 %
Machinery: 2,031 tons, 19.9 %
Hull, fittings & equipment: 4,020 tons, 39.4 %
Fuel, ammunition & stores: 1,944 tons, 19.1 %
Miscellaneous weights: 375 tons, 3.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
16,349 lbs / 7,416 Kg = 152.6 x 6.0 " / 152 mm shells or 1.9 torpedoes
Stability (Unstable if below 1.00): 1.14
Metacentric height 2.7 ft / 0.8 m
Roll period: 14.3 seconds
Steadiness - As gun platform (Average = 50 %): 61 %
- Recoil effect (Restricted arc if above 1.00): 0.55
Seaboat quality (Average = 1.00): 1.34

Hull form characteristics:
Hull has low quarterdeck
and transom stern
Block coefficient: 0.550
Length to Beam Ratio: 10.59 : 1
'Natural speed' for length: 27.47 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 45
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26.90 ft / 8.20 m
- Forecastle (25 %): 24.61 ft / 7.50 m
- Mid (50 %): 22.31 ft / 6.80 m
- Quarterdeck (15 %): 14.76 ft / 4.50 m (22.31 ft / 6.80 m before break)
- Stern: 14.76 ft / 4.50 m
- Average freeboard: 22.27 ft / 6.79 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 84.0 %
- Above water (accommodation/working, high = better): 205.3 %
Waterplane Area: 23,938 Square feet or 2,224 Square metres
Displacement factor (Displacement / loading): 137 %
Structure weight / hull surface area: 96 lbs/sq ft or 471 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 1.88
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily

Breakdown of Miscellaneous Weights:
- 108 tons for 152mm gun-loading equipment
- 44 tons for 100mm automatic gun equipment
- 223 tons for other equipment

Ships in Class:
- Avrora: Laid down in Petrograd January 1945, completed June 1946.
- Pallada: Laid down in Petrograd January 1945, completed June 1946.
- Nadezhda: Laid down in Petrograd January 1946, completed June 1947.
- Evstafii: Laid down in Petrograd January 1946, completed June 1947.

16

Sunday, September 28th 2014, 4:50pm

Looks good to me.

17

Tuesday, October 14th 2014, 2:34am

A destroyer for the Caspian Sea, to replace Caspianskiy. Based on the 1944 Soobrazitelny-class destroyer, but modified for less draft in order to transit the various river canals.

Quoted

Dagestan (Project 69M), Russian Destroyer laid down 1945

Displacement:
1,900 t light; 2,084 t standard; 2,359 t normal; 2,578 t full load

Dimensions: Length overall / water x beam x draught
409.67 ft / 393.70 ft x 36.42 ft x 12.80 ft (normal load)
124.87 m / 120.00 m x 11.10 m x 3.90 m

Armament:
4 - 5.12" / 130 mm guns (2x2 guns), 79.37lbs / 36.00kg shells, 1945 Model
Automatic rapid fire guns in deck mounts with hoists
on centreline ends, evenly spread
2 - 2.95" / 75.0 mm guns (1x2 guns), 15.43lbs / 7.00kg shells, 1945 Model
Automatic rapid fire guns in a deck mount with hoist
on centreline forward, all raised guns - superfiring
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.55lbs / 0.70kg shells, 1945 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
4 - 0.55" / 14.0 mm guns in single mounts, 0.08lbs / 0.04kg shells, 1945 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 361 lbs / 164 kg
Shells per gun, main battery: 650
8 - 20.9" / 530 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.39" / 10 mm 0.39" / 10 mm
2nd: 0.98" / 25 mm 0.39" / 10 mm 0.39" / 10 mm
3rd: 0.59" / 15 mm 0.20" / 5 mm -

- Conning tower: 1.18" / 30 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 43,665 shp / 32,574 Kw = 34.00 kts
Range 4,000nm at 18.00 kts
Bunker at max displacement = 494 tons

Complement:
168 - 219

Cost:
£1.713 million / $6.853 million

Distribution of weights at normal displacement:
Armament: 46 tons, 1.9 %
Armour: 17 tons, 0.7 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 13 tons, 0.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 5 tons, 0.2 %
Machinery: 1,022 tons, 43.3 %
Hull, fittings & equipment: 680 tons, 28.8 %
Fuel, ammunition & stores: 459 tons, 19.5 %
Miscellaneous weights: 135 tons, 5.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
714 lbs / 324 Kg = 10.6 x 5.1 " / 130 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.16
Metacentric height 1.5 ft / 0.4 m
Roll period: 12.7 seconds
Steadiness - As gun platform (Average = 50 %): 69 %
- Recoil effect (Restricted arc if above 1.00): 0.53
Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.450
Length to Beam Ratio: 10.81 : 1
'Natural speed' for length: 22.64 kts
Power going to wave formation at top speed: 66 %
Trim (Max stability = 0, Max steadiness = 100): 68
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.98 ft / 6.70 m
- Forecastle (15 %): 21.33 ft / 6.50 m
- Mid (30 %): 20.67 ft / 6.30 m (13.45 ft / 4.10 m aft of break)
- Quarterdeck (15 %): 13.45 ft / 4.10 m
- Stern: 13.45 ft / 4.10 m
- Average freeboard: 15.80 ft / 4.82 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 165.9 %
- Above water (accommodation/working, high = better): 100.7 %
Waterplane Area: 9,500 Square feet or 883 Square metres
Displacement factor (Displacement / loading): 87 %
Structure weight / hull surface area: 37 lbs/sq ft or 183 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.62
- Overall: 0.56
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate

Breakdown of Miscellaneous Weights:
- 45 tons for electronics
- 20 tons for eight 53cm M-1944 reload torpedoes
- 15 tons for climatization gear
- 55 tons for mines or depth charges.
135 tons total miscellaneous weight

18

Tuesday, October 14th 2014, 2:52am

Hmm. A rather formidable vessel for those narrow waters. Likely to give the Persians something to think about.

19

Tuesday, October 14th 2014, 3:01am

Indeed it will

20

Tuesday, October 14th 2014, 3:16am

Not as heavily-gunned as some of the current occupants - but it is formidable because it has a full radar and fire-control suite.

The Russians always will have the ability to assume control of the Caspian, simply by virtue of controlling multiple rivers/canals to reach it. Any of my destroyers, and some of my torpedo cruisers, can shift from the Black Sea or the Baltic Sea to the Caspian purely using internal waterways. So while I'm keeping a flagship and some patrol boats on the Caspian, maintaining large forces really isn't worthwhile at the present time. (In any case, it would irritate the Persians.)