You are not logged in.

17inc

Unregistered

1

Monday, June 23rd 2003, 8:06am

this is a Dower class CA

this is my Dower class CA there ment to there places a long side my super 13,000 tons CAs and for AAA work a Darwin class AAA CL




Downer class, AUSTALIA Cruiser laid down 1935

Displacement:
9,488 t light; 9,782 t standard; 10,843 t normal; 11,649 t full load
Loading submergence 492 tons/feet

Dimensions:
667.00 ft x 45.00 ft x 29.00 ft (normal load)
203.30 m x 13.72 m x 8.84 m

Armament:
8 - 6.00" / 152 mm guns (4 Main turrets x 2 guns, 2 superfiring turrets)
30 - 1.56" / 40 mm AA guns
40 - 0.80" / 20 mm guns
Weight of broadside 931 lbs / 422 kg

Armour:
Belt 5.00" / 127 mm, ends unarmoured
Belts cover 122 % of normal area
Main turrets 6.00" / 152 mm
Armour deck 4.00" / 102 mm, Conning tower 5.00" / 127 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 83,743 shp / 62,472 Kw = 32.20 kts
Range 12,000nm at 12.00 kts

Complement:
531 - 690

Cost:
£3.884 million / $15.536 million

Distribution of weights at normal displacement:
Armament: 116 tons, 1.1 %
Armour: 2,670 tons, 24.6 %
Belts: 845 tons, 7.8 %, Armament: 499 tons, 4.6 %, Armour Deck: 1,274 tons, 11.7 %
Conning Tower: 53 tons, 0.5 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 2,379 tons, 21.9 %
Hull, fittings & equipment: 4,322 tons, 39.9 %
Fuel, ammunition & stores: 1,355 tons, 12.5 %
Miscellaneous weights: 0 tons, 0.0 %

Metacentric height 1.5

Remarks:
Hull space for machinery, storage & compartmentation is excellent
Room for accommodation & workspaces is adequate
Excellent seaboat, comfortable and able to fight her guns in the heaviest weather

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.00
Shellfire needed to sink: 12,302 lbs / 5,580 Kg = 113.9 x 6.0 " / 152 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 1.7
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 60 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.56
Relative quality as seaboat: 1.54

Hull form characteristics:
Block coefficient: 0.436
Sharpness coefficient: 0.27
Hull speed coefficient 'M': 9.22
'Natural speed' for length: 25.83 kts
Power going to wave formation at top speed: 45 %
Trim: 39
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 80.2 %
Relative accommodation and working space: 111.1 %
(Average = 100%)
Displacement factor: 130 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 1.16
(Structure weight / hull surface area: 111 lbs / square foot or 542 Kg / square metre)
Relative longitudinal hull strength: 1.50
(for 18.00 ft / 5.49 m average freeboard, freeboard adjustment 2.61 ft)
Relative composite hull strength: 1.19


Darwin, Australia AA CL laid down 1937

Displacement:
7,808 t light; 8,034 t standard; 8,655 t normal; 9,118 t full load
Loading submergence 422 tons/feet

Dimensions:
612.00 ft x 36.00 ft x 25.00 ft (normal load)
186.54 m x 10.97 m x 7.62 m

Armament:
8 - 5.25" / 133 mm guns (4 Main turrets x 2 guns, 2 superfiring turrets)
25 - 1.56" / 40 mm AA guns
40 - 0.80" / 20 mm guns
Weight of broadside 637 lbs / 289 kg

Armour:
Belt 2.00" / 51 mm, ends unarmoured
Belts cover 122 % of normal area
Main turrets 4.00" / 102 mm
Conning tower 2.00" / 51 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 74,259 shp / 55,398 Kw = 32.00 kts
Range 8,500nm at 12.00 kts

Complement:
448 - 583

Cost:
£3.427 million / $13.707 million

Distribution of weights at normal displacement:
Armament: 80 tons, 0.9 %
Armour: 562 tons, 6.5 %
Belts: 275 tons, 3.2 %, Armament: 269 tons, 3.1 %, Armour Deck: 0 tons, 0.0 %
Conning Tower: 18 tons, 0.2 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 2,058 tons, 23.8 %
Hull, fittings & equipment: 5,108 tons, 59.0 %
Fuel, ammunition & stores: 848 tons, 9.8 %
Miscellaneous weights: 0 tons, 0.0 %

Metacentric height 1.1

Remarks:
Hull space for machinery, storage & compartmentation is adequate
Room for accommodation & workspaces is adequate
Good seaboat, rides out heavy weather easily

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.00
Shellfire needed to sink: 9,071 lbs / 4,115 Kg = 125.4 x 5.3 " / 133 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 1.3
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 51 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.68
Relative quality as seaboat: 1.29

Hull form characteristics:
Block coefficient: 0.550
Sharpness coefficient: 0.29
Hull speed coefficient 'M': 9.12
'Natural speed' for length: 24.74 kts
Power going to wave formation at top speed: 49 %
Trim: 40
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 84.9 %
Relative accommodation and working space: 100.4 %
(Average = 100%)
Displacement factor: 163 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 2.02
(Structure weight / hull surface area: 158 lbs / square foot or 771 Kg / square metre)
Relative longitudinal hull strength: 2.07
(for 16.00 ft / 4.88 m average freeboard, freeboard adjustment 1.29 ft)
Relative composite hull strength: 2.03






2

Monday, June 23rd 2003, 9:42am

I think the correct designation for an Anti-aircraft cruiser would be CLAA. Aren't your ships a little thin on the beam? I thought (not sure) we were operating a maximum of Length:beam of 12:1.

667/12 =55ft.

Both are lightly armed for cruisers.

HoOmAn

Keeper of the Sacred Block Coefficient

  • Send private message

3

Monday, June 23rd 2003, 10:10am

hmmm

Lightly armed? I don´t think so. Especially his light AA guns. Just look at the numbers. He simply doubled what I put on the Quiz-cruiser. Now, honestly, do you think there is enough deckspace for all those guns? Look at my drawing and tell me, where to put all those guns.

But ehy, he doesn´t have to care about that very long. The first time his ships are at sea, they´ll snap in two. Their beam to length ratio is far beyond realismn.

4

Monday, June 23rd 2003, 1:42pm

I was talking about the main armament of the Cruisers. 8 6"guns is pitiful for 10,000t. Fiji class were 1500t smaller and had 12 6" guns. Also there are no heavy AA guns. Technology isn't advanced enough in 1935 to have the 6" guns as effective AA weapons.

17inc

Unregistered

5

Monday, June 23rd 2003, 1:50pm

OK i think i fix it this time

THe Downer class is a CA in the ALt line the Darwin is a CLAA. The 6" dowers are two make up the CA numbers so guy donot get the two mix up.




Downer class, AUSTALIA Cruiser laid down 1935

Displacement:
9,365 t light; 9,654 t standard; 10,595 t normal; 11,305 t full load
Loading submergence 557 tons/feet

Dimensions:
567.00 ft x 60.00 ft x 25.00 ft (normal load)
172.82 m x 18.29 m x 7.62 m

Armament:
8 - 6.00" / 152 mm guns (4 Main turrets x 2 guns, 2 superfiring turrets)
30 - 1.56" / 40 mm AA guns
40 - 0.80" / 20 mm guns
Weight of broadside 931 lbs / 422 kg

Armour:
Belt 5.00" / 127 mm, ends unarmoured
Belts cover 122 % of normal area
Main turrets 6.00" / 152 mm
Armour deck 4.00" / 102 mm, Conning tower 5.00" / 127 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 89,578 shp / 66,826 Kw = 32.20 kts
Range 12,000nm at 12.00 kts

Complement:
522 - 678

Cost:
£3.980 million / $15.921 million

Distribution of weights at normal displacement:
Armament: 116 tons, 1.1 %
Armour: 2,855 tons, 26.9 %
Belts: 861 tons, 8.1 %, Armament: 498 tons, 4.7 %, Armour Deck: 1,444 tons, 13.6 %
Conning Tower: 52 tons, 0.5 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 2,545 tons, 24.0 %
Hull, fittings & equipment: 3,849 tons, 36.3 %
Fuel, ammunition & stores: 1,230 tons, 11.6 %
Miscellaneous weights: 0 tons, 0.0 %

Metacentric height 2.3

Remarks:
Hull space for machinery, storage & compartmentation is adequate
Room for accommodation & workspaces is excellent

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.00
Shellfire needed to sink: 11,706 lbs / 5,310 Kg = 108.4 x 6.0 " / 152 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 2.9
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 68 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.25
Relative quality as seaboat: 1.00

Hull form characteristics:
Block coefficient: 0.436
Sharpness coefficient: 0.32
Hull speed coefficient 'M': 7.90
'Natural speed' for length: 23.81 kts
Power going to wave formation at top speed: 56 %
Trim: 68
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 87.0 %
Relative accommodation and working space: 127.4 %
(Average = 100%)
Displacement factor: 119 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 1.03
(Structure weight / hull surface area: 109 lbs / square foot or 535 Kg / square metre)
Relative longitudinal hull strength: 1.56
(for 17.90 ft / 5.46 m average freeboard, freeboard adjustment 2.58 ft)
Relative composite hull strength: 1.07

Darwin, Australia CLAAA laid down 1937

Displacement:
8,710 t light; 8,955 t standard; 9,563 t normal; 10,010 t full load
Loading submergence 507 tons/feet

Dimensions:
525.00 ft x 60.00 ft x 25.00 ft (normal load)
160.02 m x 18.29 m x 7.62 m

Armament:
8 - 5.25" / 133 mm guns (4 Main turrets x 2 guns, 2 superfiring turrets)
25 - 1.56" / 40 mm AA guns
40 - 0.80" / 20 mm guns
Weight of broadside 637 lbs / 289 kg

Armour:
Belt 2.00" / 51 mm, ends unarmoured
Belts cover 122 % of normal area
Main turrets 4.00" / 102 mm
Conning tower 2.00" / 51 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 85,175 shp / 63,540 Kw = 32.00 kts
Range 8,500nm at 12.00 kts

Complement:
483 - 628

Cost:
£3.830 million / $15.321 million

Distribution of weights at normal displacement:
Armament: 80 tons, 0.8 %
Armour: 638 tons, 6.7 %
Belts: 322 tons, 3.4 %, Armament: 297 tons, 3.1 %, Armour Deck: 0 tons, 0.0 %
Conning Tower: 19 tons, 0.2 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 2,361 tons, 24.7 %
Hull, fittings & equipment: 5,632 tons, 58.9 %
Fuel, ammunition & stores: 852 tons, 8.9 %
Miscellaneous weights: 0 tons, 0.0 %

Metacentric height 2.5

Remarks:
Hull space for machinery, storage & compartmentation is adequate
Room for accommodation & workspaces is excellent

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.05
Shellfire needed to sink: 11,561 lbs / 5,244 Kg = 159.8 x 5.3 " / 133 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 1.7
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 61 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.18
Relative quality as seaboat: 1.02

Hull form characteristics:
Block coefficient: 0.425
Sharpness coefficient: 0.32
Hull speed coefficient 'M': 7.56
'Natural speed' for length: 22.91 kts
Power going to wave formation at top speed: 59 %
Trim: 60
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 87.2 %
Relative accommodation and working space: 140.0 %
(Average = 100%)
Displacement factor: 159 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 1.61
(Structure weight / hull surface area: 169 lbs / square foot or 827 Kg / square metre)
Relative longitudinal hull strength: 3.38
(for 20.00 ft / 6.10 m average freeboard, freeboard adjustment 4.99 ft)
Relative composite hull strength: 1.74


i all so Add a sothhamton class CA as well





Southhampton, UK AUST LIgth Cruiser laid down 1938

Displacement:
8,750 t light; 9,094 t standard; 9,983 t normal; 10,654 t full load
Loading submergence 709 tons/feet

Dimensions:
584.00 ft x 62.40 ft x 17.00 ft (normal load)
178.00 m x 19.02 m x 5.18 m

Armament:
12 - 6.00" / 152 mm guns (4 Main turrets x 3 guns, 2 superfiring turrets)
8 - 4.50" / 114 mm guns
30 - 1.56" / 40 mm AA guns
45 - 0.80" / 20 mm guns
Weight of broadside 1,729 lbs / 784 kg
8 - 21.0" / 533.4 mm above water torpedoes

Armour:
Belt 5.00" / 127 mm, ends unarmoured
Belts cover 55 % of normal area
Main belt does not fully protect magazines and engineering spaces
Main turrets 6.00" / 152 mm
Armour deck 1.00" / 25 mm, Conning tower 6.00" / 152 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 91,336 shp / 68,137 Kw = 32.20 kts
Range 11,900nm at 12.00 kts

Complement:
499 - 649

Cost:
£4.723 million / $18.892 million

Distribution of weights at normal displacement:
Armament: 216 tons, 2.2 %
Armour: 1,614 tons, 16.2 %
Belts: 408 tons, 4.1 %, Armament: 686 tons, 6.9 %, Armour Deck: 459 tons, 4.6 %
Conning Tower: 60 tons, 0.6 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 2,501 tons, 25.1 %
Hull, fittings & equipment: 4,419 tons, 44.3 %
Fuel, ammunition & stores: 1,233 tons, 12.4 %
Miscellaneous weights: 0 tons, 0.0 %

Metacentric height 2.5

Remarks:
Hull space for machinery, storage & compartmentation is adequate
Room for accommodation & workspaces is excellent

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.00
Shellfire needed to sink: 12,946 lbs / 5,872 Kg = 119.9 x 6.0 " / 152 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 2.6
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 69 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.53
Relative quality as seaboat: 1.02

Hull form characteristics:
Block coefficient: 0.564
Sharpness coefficient: 0.36
Hull speed coefficient 'M': 8.29
'Natural speed' for length: 24.17 kts
Power going to wave formation at top speed: 59 %
Trim: 67
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 98.4 %
Relative accommodation and working space: 177.0 %
(Average = 100%)
Displacement factor: 120 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.98
(Structure weight / hull surface area: 113 lbs / square foot or 549 Kg / square metre)
Relative longitudinal hull strength: 1.36
(for 22.00 ft / 6.71 m average freeboard, freeboard adjustment 6.86 ft)
Relative composite hull strength: 1.01

HoOmAn

Keeper of the Sacred Block Coefficient

  • Send private message

6

Monday, June 23rd 2003, 3:35pm

hmmm

Sorry for nitpicking but a block coefficient of slightly over 0.4 is hardly realistic for a cruiser - except for a over-sized DD like the french MOgadors or a mini-cruiser like the dutch Tromp or italian Condottieri Typ A but even then, Tromp for example has a bc well in exess of 0.4....

Is there a reason why you want to build Southamptons (once I´ve mentioned them)?!

And: All of those designs, realistic or not, belong into category a) and you don´t have enough tonnage for many cruisers of that category. I wonder if you´ll build single ship classes only?

7

Monday, June 23rd 2003, 4:54pm

They are category A Cruisers, but only the Downer might cause a problem since the treaty will be still in effect in 1935. When nothing is done about a renewal of the treaty, he should have no problems at all with the Darwin and Southampton.

Walter