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1

Friday, September 2nd 2005, 10:22pm

Iberian CL Idea

San Hainando (b), Iberia CL laid down 1928

Displacement:
5,800 t light; 6,003 t standard; 6,813 t normal; 7,461 t full load

Dimensions: Length overall / water x beam x draught
587.27 ft / 557.74 ft x 55.77 ft x 14.44 ft (normal load)
179.00 m / 170.00 m x 17.00 m x 4.40 m

Armament:
6 - 5.98" / 152 mm guns (3x2 guns), 136.69lbs / 62.00kg shells, 1925 Model
Dual purpose guns in Greek style HA/LA turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
10 - 2.24" / 57.0 mm guns (5x2 guns), 5.65lbs / 2.56kg shells, 1921 Model
Dual purpose guns in deck mounts with hoists
on centreline, all amidships, 1 raised mount - superfiring
16 - 0.98" / 25.0 mm guns (8x2 guns), 0.48lbs / 0.22kg shells, 1928 Model
Anti-aircraft guns in deck mounts
on centreline, all amidships, all raised mounts - superfiring
Weight of broadside 1,294 lbs / 587 kg
Shells per gun, main battery: 135
6 - 23.6" / 600 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.15" / 80 mm 426.57 ft / 130.02 m 9.22 ft / 2.81 m
Ends: Unarmoured
Main Belt covers 118 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.15" / 80 mm 0.79" / 20 mm 0.79" / 20 mm
2nd: 1.18" / 30 mm - -

- Armour deck: 1.18" / 30 mm, Conning tower: 1.18" / 30 mm

Machinery:
Oil fired boilers, steam turbines,
Electric motors, 2 shafts, 68,622 shp / 51,192 Kw = 33.00 kts
Range 8,000nm at 15.00 kts
Bunker at max displacement = 1,459 tons

Complement:
374 - 487

Cost:
£2.329 million / $9.318 million

Distribution of weights at normal displacement:
Armament: 129 tons, 1.9 %
Armour: 1,092 tons, 16.0 %
- Belts: 504 tons, 7.4 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 94 tons, 1.4 %
- Armour Deck: 485 tons, 7.1 %
- Conning Tower: 9 tons, 0.1 %
Machinery: 2,136 tons, 31.4 %
Hull, fittings & equipment: 2,343 tons, 34.4 %
Fuel, ammunition & stores: 1,013 tons, 14.9 %
Miscellaneous weights: 100 tons, 1.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
5,393 lbs / 2,446 Kg = 50.3 x 6.0 " / 152 mm shells or 1.1 torpedoes
Stability (Unstable if below 1.00): 1.19
Metacentric height 2.9 ft / 0.9 m
Roll period: 13.8 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.47
Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.531
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 26.86 kts
Power going to wave formation at top speed: 59 %
Trim (Max stability = 0, Max steadiness = 100): 69
Bow angle (Positive = bow angles forward): 45.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26.25 ft / 8.00 m
- Forecastle (20 %): 22.97 ft / 7.00 m
- Mid (40 %): 17.06 ft / 5.20 m
- Quarterdeck (15 %): 17.06 ft / 5.20 m
- Stern: 20.34 ft / 6.20 m
- Average freeboard: 19.34 ft / 5.90 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 117.7 %
- Above water (accommodation/working, high = better): 169.0 %
Waterplane Area: 22,194 Square feet or 2,062 Square metres
Displacement factor (Displacement / loading): 105 %
Structure weight / hull surface area: 70 lbs/sq ft or 342 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.73
- Longitudinal: 1.03
- Overall: 0.75
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform

armour 12° inclined
Greek Style HA/LA turrets

2

Friday, September 2nd 2005, 11:15pm

90 rpg is not nearly enough. 200 would be better...

Otherwise looks good to me.

3

Friday, September 2nd 2005, 11:31pm

I agree with Swamphen. Unless you want tu run away often in order to reload your magazines. In that case I would suggest 10 as a minimum.
:-)

4

Friday, September 2nd 2005, 11:47pm

Those shells are fairly heavy at 62kg. Especially when coming out of a 60-cal 152mm gun.

The hull dimensions seem a bit strange. Overly long and not enough hull depth I think. 160x15x6 with a lower BC?

Why would HA/LA turrets be useful?

Triplets for the 57mm guns?

What is her use? Station ship for the Carribean? Fleet scout? Trade protection cruiser?

For trade protection the Inigo Montoya Class would be more useful. Longer range and bigger ship help in the Atlantic. For a fleet scout she needs to be a lot faster with less armour. For a station flagship you could probably get down to 30knts and spend the rest on more guns and stores.

5

Saturday, September 3rd 2005, 1:13pm

Quoted

Those shells are fairly heavy at 62kg. Especially when coming out of a 60-cal 152mm gun.

I guess it would be better to start replacing those barrels right before shooting before they wear out.
Reading the lower stuff of RA, would it be an idea to use this one hull for two designs? One for the fleet scout and one for the station flagship? Not sure how much tons you have available to play with.

6

Saturday, September 3rd 2005, 11:38pm

Forgot to change the number of rounds on the report, it WAS 90 rounds per gun when the report read "3x3" to simulate the increased weight, so when I changed the report to "3x2" I forgot the ammo up to 135 rpg....doh!

As for the shell weight, I don't know what happened there!

As for role, fleet escort was the primary idea.
(the idea was LA's last design, I've just tweaked it a bit, and stolen the idea for Denmark (Valkyrie)

Next version...........

San Hainando (c), Iberia CL laid down 1928

Displacement:
5,253 t light; 5,447 t standard; 6,200 t normal; 6,802 t full load

Dimensions: Length overall / water x beam x draught
553.64 ft / 524.93 ft x 49.21 ft x 16.40 ft (normal load)
168.75 m / 160.00 m x 15.00 m x 5.00 m

Armament:
6 - 5.98" / 152 mm guns (3x2 guns), 107.15lbs / 48.60kg shells, 1925 Model
Dual purpose guns in Greek style turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
10 - 2.24" / 57.0 mm guns (5x2 guns), 5.65lbs / 2.56kg shells, 1921 Model
Dual purpose guns in deck mounts with hoists
on centreline, all amidships, 1 raised mount - superfiring
16 - 0.98" / 25.0 mm guns (8x2 guns), 0.48lbs / 0.22kg shells, 1928 Model
Anti-aircraft guns in deck mounts
on centreline, all amidships, all raised mounts - superfiring
Weight of broadside 1,029 lbs / 467 kg
Shells per gun, main battery: 180
6 - 23.6" / 600 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.15" / 80 mm 419.88 ft / 127.98 m 9.22 ft / 2.81 m
Ends: Unarmoured
Main Belt covers 123 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.15" / 80 mm 0.79" / 20 mm 0.79" / 20 mm
2nd: 1.18" / 30 mm - -

- Armour deck: 1.18" / 30 mm, Conning tower: 1.18" / 30 mm

Machinery:
Oil fired boilers, steam turbines,
Electric motors, 2 shafts, 64,817 shp / 48,354 Kw = 33.00 kts
Range 8,000nm at 15.00 kts
Bunker at max displacement = 1,355 tons

Complement:
349 - 454

Cost:
£2.193 million / $8.772 million

Distribution of weights at normal displacement:
Armament: 129 tons, 2.1 %
Armour: 988 tons, 15.9 %
- Belts: 490 tons, 7.9 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 93 tons, 1.5 %
- Armour Deck: 396 tons, 6.4 %
- Conning Tower: 9 tons, 0.1 %
Machinery: 2,018 tons, 32.5 %
Hull, fittings & equipment: 2,018 tons, 32.5 %
Fuel, ammunition & stores: 947 tons, 15.3 %
Miscellaneous weights: 100 tons, 1.6 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
4,236 lbs / 1,921 Kg = 39.5 x 6.0 " / 152 mm shells or 0.9 torpedoes
Stability (Unstable if below 1.00): 1.19
Metacentric height 2.4 ft / 0.7 m
Roll period: 13.4 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.58
Seaboat quality (Average = 1.00): 1.21

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.512
Length to Beam Ratio: 10.67 : 1
'Natural speed' for length: 25.98 kts
Power going to wave formation at top speed: 60 %
Trim (Max stability = 0, Max steadiness = 100): 58
Bow angle (Positive = bow angles forward): 45.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 25.43 ft / 7.75 m
- Forecastle (20 %): 22.15 ft / 6.75 m
- Mid (40 %): 18.04 ft / 5.50 m
- Quarterdeck (15 %): 17.22 ft / 5.25 m
- Stern: 19.69 ft / 6.00 m
- Average freeboard: 19.41 ft / 5.92 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 123.1 %
- Above water (accommodation/working, high = better): 144.9 %
Waterplane Area: 18,103 Square feet or 1,682 Square metres
Displacement factor (Displacement / loading): 101 %
Structure weight / hull surface area: 64 lbs/sq ft or 315 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.70
- Longitudinal: 1.41
- Overall: 0.75
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

armour 12° inclined
Greek Style HA/LA turrets