WesWorld

I think she looks more 'Italian' than my other efforts. Armament is 12x6", 12x3" and 32knt speed.

http://www.geocities.com/red_admiral_italy/fitti.html

yell if you can't see the picture.

San Marco, Italian Light Cruiser laid down 1925

Displacement:
7,698 t light; 8,000 t standard; 9,034 t normal; 9,824 t full load
Loading submergence 579 tons/feet

Dimensions:
570.10 ft x 59.00 ft x 20.00 ft (normal load)
173.77 m x 17.98 m x 6.10 m

Armament:
12 - 6.00" / 152 mm guns (4 Main turrets x 3 guns, 2 superfiring turrets)
12 - 3.00" / 76 mm guns
12 - 0.79" / 20 mm AA guns
Weight of broadside 1,461 lbs / 663 kg
12 - 21.0" / 533.4 mm above water torpedoes

Armour:
Belt 3.94" / 100 mm, ends unarmoured
Belts cover 110 % of normal area
Main turrets 1.97" / 50 mm, 2nd gun shields 0.79" / 20 mm
Armour deck 1.57" / 40 mm, Conning tower 3.94" / 100 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 79,797 shp / 59,528 Kw = 32.00 kts
Range 8,000nm at 15.00 kts

Complement:
463 - 602

Cost:
£2.571 million / $10.283 million

Distribution of weights at normal displacement:
Armament: 183 tons, 2.0 %
Armour: 1,452 tons, 16.1 %
Belts: 608 tons, 6.7 %, Armament: 216 tons, 2.4 %, Armour Deck: 591 tons, 6.5 %
Conning Tower: 37 tons, 0.4 %, Torpedo bulkhead: 0 tons, 0.0 %
Machinery: 2,591 tons, 28.7 %
Hull, fittings & equipment: 3,472 tons, 38.4 %
Fuel, ammunition & stores: 1,336 tons, 14.8 %
Miscellaneous weights: 0 tons, 0.0 %

Metacentric height 2.7

Remarks:
Hull space for machinery, storage & compartmentation is adequate
Room for accommodation & workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.10
Shellfire needed to sink: 8,709 lbs / 3,950 Kg = 80.6 x 6.0 " / 152 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: 74 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.43
Relative quality as seaboat: 1.05

Hull form characteristics:
Block coefficient: 0.470
Sharpness coefficient: 0.32
Hull speed coefficient 'M': 8.37
'Natural speed' for length: 23.88 kts
Power going to wave formation at top speed: 56 %
Trim: 70
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 108.9 %
Relative accommodation and working space: 116.4 %
(Average = 100%)
Displacement factor: 112 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.96
(Structure weight / hull surface area: 102 lbs / square foot or 496 Kg / square metre)
Relative longitudinal hull strength: 1.33
(for 18.50 ft / 5.64 m average freeboard, freeboard adjustment 3.66 ft)
Relative composite hull strength: 1.00

Moving the two funnels further apart might enhance the Italian look that much more, but she looks good as she is. Are there stats for her somewhere?

J

Very similar to something I had planned for next year:

General Admiral Apraxin class light cruisers, laid down 1922

Length, 180.0 m x Beam, 16.7 m x Depth, 6.3 m
8974 tonnes normal displacement (7784 tonnes standard)

Main battery: 12 x 15.0-cm (4 x 3; 2 superfiring)
Secondary battery: 12 x 10.0-cm (6 x 2)
AA battery: 16 x 3.7-cm

Weight of broadside: 739 kg

12 TT, 53.0 cm in two sextuple mounts

Main belt, 7.5 cm; ends unarmored
Armor deck, average 2.5 cm
Conning tower, 5.0 cm

Battery armor:
Main, 7.5 cm / secondary, 2.5 cm
AA, 2.5 cm shields

Aircraft - 2 Seaplanes, 1 Catapult

Maximum speed for 54141 shaft kw = 31.50 knots
Approximate cruising radius, 9000 nm / 15 knots

Typical complement: 461-599


Estimated cost, $8.473 million (£2.118 million)

Remarks:

Relative extent of belt armor, 108 percent of 'typical' coverage.

Ship has slow, easy roll; a good, steady gun platform.

Good seaboat; rides out heavy weather easily.


Distribution of weights:
Percent
normal
displacement:

Armament ......................... 203 tonnes = 2 pct
Armor, total ..................... 1198 tonnes = 13 pct

Belt 442 tonnes = 5 pct
Deck 355 tonnes = 4 pct
C.T. 18 tonnes = 0 pct
Armament 382 tonnes = 4 pct

Machinery ........................ 2461 tonnes = 27 pct
Hull and fittings; equipment ..... 3557 tonnes = 40 pct
Fuel, ammunition, stores ......... 1505 tonnes = 17 pct
Miscellaneous weights ............ 50 tonnes = 1 pct
-----
8974 tonnes = 100 pct

Estimated metacentric height, 0.7 m

Displacement summary:

Light ship: 7469 tonnes
Standard displacement: 7784 tonnes
Normal service: 8974 tonnes
Full load: 9890 tonnes

Loading submergence 1827 tonnes/metre

+++++++++++++++++++++++++


Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.09

Shellfire needed to sink: 4044 kg = 86.4 x 15.0-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)

Torpedoes needed to sink: 1.3
(Approximates number of 'typical'
torpedo hits needed to sink ship)

Relative steadiness as gun platform, 70 percent
(50 percent is 'average')

Relative rocking effect from firing to beam, 0.61

Relative quality as a seaboat: 1.20

+++++++++++++++++++++++++


Hull form characteristics:

Block coefficient: 0.47
Sharpness coefficient: 0.31
Hull speed coefficient 'M' = 8.69
'Natural speed' for length = 24.3 knots
Power going to wave formation
at top speed: 53 percent


Estimated hull characteristics and strength:

Relative underwater volume absorbed by
magazines and engineering spaces: 107 percent

Relative accommodation and working space: 115 percent


Displacement factor: 116 percent
(Displacement relative to loading factors)


Relative cross-sectional hull strength: 0.97
(Structure weight per square
metre of hull surface: 501 kg)

Relative longitudinal hull strength: 1.30
(for 5.80 m average freeboard;
freeboard adjustment +1.28 m)

Relative composite hull strength: 1.00

+++++++++++++++++++++++++


[Machine-readable parameters: Spring Style v. 1.2.1]

590.40 x 54.78 x 20.66; 19.02 -- Dimensions
0.47 -- Block coefficient
1922 -- Year laid down
31.50 / 9000 / 15.00; Oil-fired turbine or equivalent -- Speed / radius / cruise
50 tons -- Miscellaneous weights
++++++++++
12 x 5.91; 4; 2 -- Main battery; turrets; superfiring
:
12 x 3.94; 6 -- Secondary battery; turrets
:
16 x 1.46 -- Tertiary (QF/AA) battery
Gun-shields
:
0 -- No fourth (light) battery
12 / 0 / 20.87 -- TT / submerged / size
++++++++++
2.95 / 0.00 / 0.00 / 0.00; 108 -- Belt armor; relative extent
0.98 / 1.97 -- Deck / CT
2.95 / 0.98 / 0.98 / 0.00 -- Battery armor


(Note: For portability, values are stored in Anglo-American units)


+++++++++++++++++++++++++++++++++++++++++++++++++++++++

...unfortunately as usual the geosites link dosn't work for me. She seems to be going the same way as my cruiser developement as one of my post WW1 designs is very similar in the armament department.

And the Armada is busily working on a 3*4 design .... *g*

Bernhard

I've gone for a somewhat shallower hull for the transitional CL of 1922. The follow-up class (~1926) will be very similar, but with a more logical 3x3 layout.

Trincomalee, laid down 1922

Length, 580 ft x Beam, 58.0 ft x Depth, 17.5 ft
8074 tons normal displacement (7460 tons standard)

Main battery: 6 x 5.9-inch (2 x 3)
Secondary battery: 3 x 5.9-inch (3 x 1)
AA battery: 4 x 4.1-inch
Light battery: 4 x 1.4-inch

Weight of broadside: 1068 lbs

8 TT, 19.7"

Main belt, 4.0 inches; ends unarmored
Armor deck, average 1.2 inches
C.T., 4.0 inches

Battery armor:
Main, 4.0" / secondary, 4.0"
AA, 1.0" shields / light guns, 1.0" shields

Maximum speed for 70007 shp = 31.56 knots
Approximate cruising radius, 8000 nm / 12 kts

Typical complement: 426-554


Estimated cost, $7.603 million (£1.901 million)

Remarks:

Relative extent of belt armor, 110 percent of 'typical' coverage.

Ship has slow, easy roll; a good, steady gun platform.

Ship is roomy, with superior accommodation and working space.


Distribution of weights:
Percent
normal
displacement:

Armament ......................... 133 tons = 2 pct
Armor, total ..................... 1422 tons = 18 pct

Belt 621 tons = 8 pct
Deck 457 tons = 6 pct
C.T. 35 tons = 0 pct
Armament 310 tons = 4 pct

Machinery ........................ 2375 tons = 29 pct
Hull and fittings; equipment ..... 3245 tons = 40 pct
Fuel, ammunition, stores ......... 864 tons = 11 pct
Miscellaneous weights ............ 35 tons = 0 pct
-----
8074 tons = 100 pct

Estimated metacentric height, 2.9 ft

Displacement summary:

Light ship: 7210 tons
Standard displacement: 7460 tons
Normal service: 8074 tons
Full load: 8532 tons

Loading submergence 588 tons/foot

+++++++++++++++++++++++++


Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.15

Shellfire needed to sink: 8292 lbs = 80.7 x 5.9-inch shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)

Torpedoes needed to sink: 1.3
(Approximates number of 'typical'
torpedo hits needed to sink ship)

Relative steadiness as gun platform, 72 percent
(50 percent is 'average')

Relative rocking effect from firing to beam, 0.31

Relative quality as a seaboat: 1.07

+++++++++++++++++++++++++


Hull form characteristics:

Block coefficient: 0.48
Sharpness coefficient: 0.32
Hull speed coefficient 'M' = 8.84
'Natural speed' for length = 24.1 knots
Power going to wave formation
at top speed: 55 percent


Estimated hull characteristics and strength:

Relative underwater volume absorbed by
magazines and engineering spaces: 109 percent

Relative accommodation and working space: 138 percent


Displacement factor: 111 percent
(Displacement relative to loading factors)


Relative cross-sectional hull strength: 1.00
(Structure weight per square
foot of hull surface: 98 lbs)

Relative longitudinal hull strength: 1.11
(for 17.5 ft average freeboard;
freeboard adjustment +3.0 ft)

Relative composite hull strength: 1.01

+++++++++++++++++++++++++


[Machine-readable parameters: Spring Style v. 1.2.1]

580.00 x 58.00 x 17.50; 17.50 -- Dimensions
0.48 -- Block coefficient
1922 -- Year laid down
31.56 / 8000 / 12.00; Oil-fired turbine or equivalent -- Speed / radius / cruise
35 tons -- Miscellaneous weights
++++++++++
6 x 5.90; 2; 0 -- Main battery; turrets; superfiring
:
3 x 5.90; 3 -- Secondary battery; turrets
:
4 x 4.10 -- Tertiary (QF/AA) battery
Gun-shields
:
4 x 1.40 -- Fourth (light) battery
8 / 0 / 19.70 -- TT / submerged / size
++++++++++
4.00 / 0.00 / 0.00 / 0.00; 110 -- Belt armor; relative extent
1.20 / 4.00 -- Deck / CT
4.00 / 4.00 / 1.00 / 1.00 -- Battery armor


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