WesWorld

Cruisers:

Isfahan (0)

Kaveh Class (0)

Babr (2 in reserve)

Giv (2)

Kaveh II (1)



Note: Consolidation of Major Surface Combattant, Heavy Cruiser, and Light Cruiser threads.

Isfahan - to China, 1942
Azerbaijan - to Mexico, 1941

Isfahan, Persian Light Cruiser laid down 1930

Displacement:
4,102 t light; 4,278 t standard; 4,587 t normal; 4,833 t full load

Dimensions: Length overall / water x beam x draught
496.41 ft / 488.00 ft x 45.00 ft x 17.00 ft (normal load)
151.31 m / 148.74 m x 13.72 m x 5.18 m

Armament:
6 - 5.12" / 130 mm guns (2x3 guns), 75 lbs shells, 1921 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
4 - 1.97" / 50.0 mm guns (2x2 guns), 4 lbs shells, 1926 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread, all raised mounts
12 - 0.98" / 25.0 mm guns (4x3 guns), 0.56lbs shells, 1926 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 423 lbs / 192 kg
Shells per gun, main battery: 350
4 - 24.0" / 609.6 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.00" / 51 mm 0.50" / 13 mm 1.50" / 38 mm
2nd: 1.00" / 25 mm - -
3rd: 1.00" / 25 mm - -

- Conning tower: 3.00" / 76 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 79,128 shp / 59,030 Kw = 36.50 kts
Range 2,000nm at 20.00 kts
Bunker at max displacement = 555 tons

Complement:
278 - 362

Cost:
£2.172 million / $8.690 million

Distribution of weights at normal displacement:
Armament: 53 tons, 1.2 %
Armour: 70 tons, 1.5 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 53 tons, 1.1 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 18 tons, 0.4 %
Machinery: 2,368 tons, 51.6 %
Hull, fittings & equipment: 1,560 tons, 34.0 %
Fuel, ammunition & stores: 485 tons, 10.6 %
Miscellaneous weights: 50 tons, 1.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,509 lbs / 684 Kg = 22.5 x 5.1 " / 130 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.18
Metacentric height 2.0 ft / 0.6 m
Roll period: 13.2 seconds
Steadiness - As gun platform (Average = 50 %): 76 %
- Recoil effect (Restricted arc if above 1.00): 0.31
Seaboat quality (Average = 1.00): 1.05

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.430
Length to Beam Ratio: 10.84 : 1
'Natural speed' for length: 25.27 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 73
Bow angle (Positive = bow angles forward): 17.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.50 ft / 8.38 m
- Forecastle (20 %): 17.50 ft / 5.33 m
- Mid (50 %): 17.50 ft / 5.33 m
- Quarterdeck (15 %): 17.50 ft / 5.33 m
- Stern: 17.50 ft / 5.33 m
- Average freeboard: 18.30 ft / 5.58 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 177.9 %
- Above water (accommodation/working, high = better): 143.5 %
Waterplane Area: 14,319 Square feet or 1,330 Square metres
Displacement factor (Displacement / loading): 86 %
Structure weight / hull surface area: 59 lbs/sq ft or 286 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.68
- Longitudinal: 1.75
- 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

Isfahan refit - 1941

The Isfahan received a refit similar to the Babr class cruisers to serve as the AA companion to the new heavy cruiser.

A change in naval strategy in late 1941/early 1942 prompted her sale.

Isfahan, Persia Light Cruiser laid down 1930 (Engine 1941)

Displacement:
3,709 t light; 3,899 t standard; 4,587 t normal; 5,137 t full load

Dimensions: Length overall / water x beam x draught
496.41 ft / 488.00 ft x 45.00 ft x 17.00 ft (normal load)
151.31 m / 148.74 m x 13.72 m x 5.18 m

Armament:
4 - 5.12" / 130 mm guns (2x2 guns), 67.03lbs / 30.41kg shells, 1941 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread
4 - 4.13" / 105 mm guns (2x2 guns), 35.32lbs / 16.02kg shells, 1941 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread, all raised mounts
18 - 1.57" / 40.0 mm guns (6x3 guns), 1.95lbs / 0.89kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 2 raised mounts
8 - 0.79" / 20.0 mm guns (4x2 guns), 0.24lbs / 0.11kg shells, 1941 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 447 lbs / 203 kg
Shells per gun, main battery: 350
4 - 24.0" / 610 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.00" / 51 mm 0.50" / 13 mm 1.50" / 38 mm
2nd: 1.50" / 38 mm 0.50" / 13 mm 1.00" / 25 mm
3rd: 1.00" / 25 mm - -
4th: 0.50" / 13 mm - -

- Conning tower: 3.00" / 76 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 74,811 shp / 55,809 Kw = 36.00 kts
Range 10,000nm at 15.00 kts
Bunker at max displacement = 1,238 tons

Complement:
278 - 362

Cost:
£1.896 million / $7.585 million

Distribution of weights at normal displacement:
Armament: 56 tons, 1.2 %
Armour: 46 tons, 1.0 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 28 tons, 0.6 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 18 tons, 0.4 %
Machinery: 1,977 tons, 43.1 %
Hull, fittings & equipment: 1,570 tons, 34.2 %
Fuel, ammunition & stores: 878 tons, 19.1 %
Miscellaneous weights: 60 tons, 1.3 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2,149 lbs / 975 Kg = 32.1 x 5.1 " / 130 mm shells or 0.6 torpedoes
Stability (Unstable if below 1.00): 1.24
Metacentric height 2.2 ft / 0.7 m
Roll period: 12.6 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.32
Seaboat quality (Average = 1.00): 1.09

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.430
Length to Beam Ratio: 10.84 : 1
'Natural speed' for length: 25.27 kts
Power going to wave formation at top speed: 63 %
Trim (Max stability = 0, Max steadiness = 100): 65
Bow angle (Positive = bow angles forward): 17.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.50 ft / 8.38 m
- Forecastle (20 %): 17.50 ft / 5.33 m
- Mid (50 %): 17.50 ft / 5.33 m
- Quarterdeck (15 %): 17.50 ft / 5.33 m
- Stern: 17.50 ft / 5.33 m
- Average freeboard: 18.30 ft / 5.58 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 151.7 %
- Above water (accommodation/working, high = better): 143.5 %
Waterplane Area: 14,319 Square feet or 1,330 Square metres
Displacement factor (Displacement / loading): 102 %
Structure weight / hull surface area: 59 lbs/sq ft or 288 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.69
- Longitudinal: 1.78
- 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

40t-Fire direction and air search radars.
20t-misc

Kaveh (ex-Siamese Maeklong ,ex-Argentine Santisima Trinidad), received 1934, lost 1938


Picture by Gravina

Battlecruiser laid down 1906 (Engine 1923) (rearmed 1934)
Displacement:
13,695 t light; 14,456 t standard; 15,208 t normal; 15,809 t full load

Dimensions: Length overall / water x beam x draught
529.00 ft / 529.00 ft x 75.00 ft x 26.00 ft (normal load)
161.24 m / 161.24 m x 22.86 m x 7.92 m

Armament:
4 - 10.00" / 254 mm guns (2x2 guns), 500.00lbs / 226.80kg shells, 1924 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
4 - 10.00" / 254 mm guns in single mounts, 500.00lbs / 226.80kg shells, 1924 Model
Breech loading guns in turrets (on barbettes)
on side ends, evenly spread
12 - 5.12" / 130 mm guns in single mounts, 66.14lbs / 30.00kg shells, 1931 Model
Breech loading guns in casemate mounts
on side, all amidships
8 - 3.94" / 100 mm guns (4x2 guns), 30.42lbs / 13.80kg shells, 1931 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
10 - 1.46" / 37.0 mm guns (6 mounts), 1.55lbs / 0.70kg shells, 1930 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 2 raised mounts
Weight of broadside 5,053 lbs / 2,292 kg
Shells per gun, main battery: 150

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 6.00" / 152 mm 320.00 ft / 97.54 m 10.50 ft / 3.20 m
Ends: 4.00" / 102 mm 209.00 ft / 63.70 m 10.50 ft / 3.20 m
Upper: 3.00" / 76 mm 320.00 ft / 97.54 m 8.00 ft / 2.44 m
Main Belt covers 93 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 8.00" / 203 mm 4.50" / 114 mm 8.00" / 203 mm
2nd: 8.00" / 203 mm 4.50" / 114 mm 6.00" / 152 mm
3rd: 3.00" / 76 mm - 3.00" / 76 mm
4th: 0.98" / 25 mm 0.59" / 15 mm -
5th: 0.39" / 10 mm - -

- Armour deck: 4.00" / 102 mm, Conning tower: 8.00" / 203 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 82,000 shp / 61,172 Kw = 29.04 kts
Range 10,000nm at 10.00 kts
Bunker at max displacement = 1,353 tons

Complement:
684 - 890

Cost:
£1.395 million / $5.579 million

Distribution of weights at normal displacement:
Armament: 633 tons, 4.2 %
Armour: 4,676 tons, 30.7 %
- Belts: 1,542 tons, 10.1 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 1,043 tons, 6.9 %
- Armour Deck: 1,985 tons, 13.1 %
- Conning Tower: 106 tons, 0.7 %
Machinery: 2,741 tons, 18.0 %
Hull, fittings & equipment: 5,591 tons, 36.8 %
Fuel, ammunition & stores: 1,513 tons, 9.9 %
Miscellaneous weights: 55 tons, 0.4 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
16,756 lbs / 7,600 Kg = 33.5 x 10.0 " / 254 mm shells or 2.1 torpedoes
Stability (Unstable if below 1.00): 1.02
Metacentric height 3.4 ft / 1.0 m
Roll period: 17.1 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.58
Seaboat quality (Average = 1.00): 0.90

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.516
Length to Beam Ratio: 7.05 : 1
'Natural speed' for length: 23.00 kts
Power going to wave formation at top speed: 60 %
Trim (Max stability = 0, Max steadiness = 100): 67
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: 24.50 ft / 7.47 m
- Forecastle (20 %): 21.50 ft / 6.55 m
- Mid (65 %): 21.50 ft / 6.55 m (14.50 ft / 4.42 m aft of break)
- Quarterdeck (20 %): 14.50 ft / 4.42 m
- Stern: 14.50 ft / 4.42 m
- Average freeboard: 19.29 ft / 5.88 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 91.6 %
- Above water (accommodation/working, high = better): 147.5 %
Waterplane Area: 26,825 Square feet or 2,492 Square metres
Displacement factor (Displacement / loading): 100 %
Structure weight / hull surface area: 137 lbs/sq ft or 671 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.85
- Overall: 1.01
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather
(As simmed by Swamphen)


Ships: Kaveh

Rebuilt of the old British Cruisers into AA. Thanks Brock for the SIM. One will be reworked in Persia and the other in India.

Babr, Persian AA Cruiser laid down 1915 (Engine 1938 )

Babr, laid down 1915, rebuilt 1938, scrapped 1944
Shir, laid down 1915, rebuilt 1938, scrapped 1944

Displacement:
3,892 t light; 4,047 t standard; 4,657 t normal; 5,145 t full load

Dimensions: Length overall / water x beam x draught
420.00 ft / 420.00 ft x 42.00 ft x 16.50 ft (normal load)
128.02 m / 128.02 m x 12.80 m x 5.03 m

Armament:
6 - 5.12" / 130 mm guns (3x2 guns), 67.03lbs / 30.41kg shells, 1938 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
8 - 1.57" / 40.0 mm guns (4x2 guns), 1.95lbs / 0.89kg shells, 1938 Model
Anti-aircraft guns in deck mounts
on side, all amidships
4 - 1.57" / 40.0 mm guns (1x4 guns), 1.95lbs / 0.89kg shells, 1938 Model
Anti-aircraft guns in deck mount
on centreline aft, all raised guns - superfiring
8 - 0.79" / 20.0 mm guns (4x2 guns), 0.24lbs / 0.11kg shells, 1938 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 428 lbs / 194 kg
Shells per gun, main battery: 250
16 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.00" / 76 mm 335.00 ft / 102.11 m 8.00 ft / 2.44 m
Ends: 2.50" / 64 mm 85.00 ft / 25.91 m 8.00 ft / 2.44 m
Main Belt covers 123 % of normal length
Main belt does not fully cover magazines and engineering spaces

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.00" / 51 mm 1.00" / 25 mm 2.00" / 51 mm
2nd: 1.00" / 25 mm - -
3rd: 0.50" / 13 mm - -
4th: 0.50" / 13 mm - -

- Armour deck: 0.85" / 22 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 63,735 shp / 47,546 Kw = 32.00 kts
Range 8,000nm at 15.00 kts
Bunker at max displacement = 1,099 tons

Complement:
281 - 366

Cost:
£0.623 million / $2.493 million

Distribution of weights at normal displacement:
Armament: 53 tons, 1.1 %
Armour: 616 tons, 13.2 %
- Belts: 388 tons, 8.3 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 32 tons, 0.7 %
- Armour Deck: 195 tons, 4.2 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 1,766 tons, 37.9 %
Hull, fittings & equipment: 1,406 tons, 30.2 %
Fuel, ammunition & stores: 765 tons, 16.4 %
Miscellaneous weights: 50 tons, 1.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2,561 lbs / 1,162 Kg = 38.2 x 5.1 " / 130 mm shells or 0.6 torpedoes
Stability (Unstable if below 1.00): 1.16
Metacentric height 1.8 ft / 0.5 m
Roll period: 13.1 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.27
Seaboat quality (Average = 1.00): 0.84

Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.560
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 20.49 kts
Power going to wave formation at top speed: 66 %
Trim (Max stability = 0, Max steadiness = 100): 60
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: 23.00 ft / 7.01 m
- Forecastle (35 %): 22.00 ft / 6.71 m (13.50 ft / 4.11 m aft of break)
- Mid (50 %): 13.50 ft / 4.11 m
- Quarterdeck (15 %): 13.50 ft / 4.11 m
- Stern: 13.50 ft / 4.11 m
- Average freeboard: 16.62 ft / 5.06 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 133.6 %
- Above water (accommodation/working, high = better): 42.6 %
Waterplane Area: 12,427 Square feet or 1,154 Square metres
Displacement factor (Displacement / loading): 101 %
Structure weight / hull surface area: 62 lbs/sq ft or 304 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.83
- Longitudinal: 1.74
- Overall: 0.90
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is extremely poor
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

Will start construction in India in Q4 1938. Thanks Brock for the SIM.

First unit originally named Palang (or possibly Panang) but ethymology is unknown; renamed Q2/1942

Giv, Persian Light Cruiser laid down 1938

Giv, laid down 1938
Banu Goshasp, laid down 1941

Displacement:
7,040 t light; 7,333 t standard; 8,080 t normal; 8,678 t full load

Dimensions: Length overall / water x beam x draught
567.30 ft / 557.74 ft x 55.77 ft x 19.36 ft (normal load)
172.91 m / 170.00 m x 17.00 m x 5.90 m

Armament:
9 - 5.91" / 150 mm guns (3x3 guns), 102.98lbs / 46.71kg shells, 1938 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
10 - 4.13" / 105 mm guns (5x2 guns), 35.32lbs / 16.02kg shells, 1938 Model
Dual purpose guns in deck mounts with hoists
on side, all amidships, 1 raised mount - superfiring
8 – 1.57" / 40.0 mm guns (4x2 guns), 1.95lbs / 0.89kg shells, 1938 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
8 - 0.79" / 20.0 mm guns (4x2 guns), 0.24lbs / 0.11kg shells, 1938 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 1,291 lbs / 586 kg
Shells per gun, main battery: 170
6 – 21.0" / 550 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.94" / 100 mm 362.53 ft / 110.50 m 9.84 ft / 3.00 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 2.76" / 70 mm 3.94" / 100 mm
2nd: 1.18" / 30 mm 0.79" / 20 mm 0.79" / 20 mm
3rd: 0.39" / 10 mm - -
4th: 0.39" / 10 mm - -

- Armour deck: 1.97" / 50 mm, Conning tower: 3.94" / 100 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 68,736 shp / 51,277 Kw = 32.50 kts
Range 12,000nm at 12.00 kts
Bunker at max displacement = 1,345 tons

Complement:
425 - 553

Cost:
£3.737 million / $14.949 million

Distribution of weights at normal displacement:
Armament: 161 tons, 2.0 %
Armour: 1,669 tons, 20.7 %
- Belts: 584 tons, 7.2 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 288 tons, 3.6 %
- Armour Deck: 763 tons, 9.4 %
- Conning Tower: 34 tons, 0.4 %
Machinery: 1,860 tons, 23.0 %
Hull, fittings & equipment: 3,280 tons, 40.6 %
Fuel, ammunition & stores: 1,040 tons, 12.9 %
Miscellaneous weights: 70 tons, 0.9 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
11,004 lbs / 4,991 Kg = 106.9 x 5.9 " / 150 mm shells or 1.6 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 %): 55 %
- Recoil effect (Restricted arc if above 1.00): 0.42
Seaboat quality (Average = 1.00): 1.05

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.470
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 27.05 kts
Power going to wave formation at top speed: 57 %
Trim (Max stability = 0, Max steadiness = 100): 52
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26.25 ft / 8.00 m
- Forecastle (20 %): 20.83 ft / 6.35 m
- Mid (50 %): 17.22 ft / 5.25 m
- Quarterdeck (15 %): 17.22 ft / 5.25 m
- Stern: 17.22 ft / 5.25 m
- Average freeboard: 18.92 ft / 5.77 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 91.8 %
- Above water (accommodation/working, high = better): 149.9 %
Waterplane Area: 20,965 Square feet or 1,948 Square metres
Displacement factor (Displacement / loading): 120 %
Structure weight / hull surface area: 97 lbs/sq ft or 476 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.48
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

In early 1939 the Persian Government reached an gentleman agreement with the United States to purchase the namesake of the Pensacola Class, with payments starting early in 1940. A life extension refurnishing contract was included in the cost of purchase and the ship was delivered late in 1941.

OOC: Thanks Brock for SIM

Kaveh II (ex-Pensacola), Persian (ex-US) Heavy Cruiser laid down 1925 (unmodified ship SIM)

Displacement:
10,658 t light; 11,125 t standard; 12,671 t normal; 13,908 t full load

Dimensions: Length overall / water x beam x draught
587.64 ft / 570.00 ft x 65.25 ft x 22.00 ft (normal load)
179.11 m / 173.74 m x 19.89 m x 6.71 m

Armament:
4 - 8.00" / 203 mm guns (2x2 guns), 256.00lbs / 116.12kg shells, 1925 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
6 - 8.00" / 203 mm guns (2x3 guns), 256.00lbs / 116.12kg shells, 1925 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, all raised mounts
6 - 5.00" / 127 mm guns in single mounts, 62.50lbs / 28.35kg shells, 1925 Model
Dual purpose guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 2,935 lbs / 1,331 kg
Shells per gun, main battery: 120
6 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.00" / 76 mm 405.00 ft / 123.44 m 14.90 ft / 4.54 m
Ends: Unarmoured
Main Belt covers 109 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.00" / 76 mm 1.00" / 25 mm 3.00" / 76 mm
2nd: 3.00" / 76 mm 1.00" / 25 mm 3.00" / 76 mm

- Armour deck: 1.00" / 25 mm, Conning tower: 3.00" / 76 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 103,538 shp / 77,239 Kw = 32.00 kts
Range 10,000nm at 15.00 kts
Bunker at max displacement = 2,783 tons

Complement:
596 - 776

Cost:
£3.770 million / $15.078 million

Distribution of weights at normal displacement:
Armament: 367 tons, 2.9 %
Armour: 1,621 tons, 12.8 %
- Belts: 753 tons, 5.9 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 357 tons, 2.8 %
- Armour Deck: 477 tons, 3.8 %
- Conning Tower: 35 tons, 0.3 %
Machinery: 3,362 tons, 26.5 %
Hull, fittings & equipment: 5,208 tons, 41.1 %
Fuel, ammunition & stores: 2,013 tons, 15.9 %
Miscellaneous weights: 100 tons, 0.8 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
12,694 lbs / 5,758 Kg = 49.6 x 8.0 " / 203 mm shells or 1.5 torpedoes
Stability (Unstable if below 1.00): 1.07
Metacentric height 3.0 ft / 0.9 m
Roll period: 15.8 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.79
Seaboat quality (Average = 1.00): 1.13

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.542
Length to Beam Ratio: 8.74 : 1
'Natural speed' for length: 23.87 kts
Power going to wave formation at top speed: 60 %
Trim (Max stability = 0, Max steadiness = 100): 62
Bow angle (Positive = bow angles forward): 26.10 degrees
Stern overhang: -2.60 ft / -0.79 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 36.00 ft / 10.97 m
- Forecastle (20 %): 27.00 ft / 8.23 m
- Mid (50 %): 20.50 ft / 6.25 m
- Quarterdeck (34 %): 19.50 ft / 5.94 m
- Stern: 22.00 ft / 6.71 m
- Average freeboard: 23.50 ft / 7.16 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 109.1 %
- Above water (accommodation/working, high = better): 164.4 %
Waterplane Area: 25,763 Square feet or 2,393 Square metres
Displacement factor (Displacement / loading): 111 %
Structure weight / hull surface area: 121 lbs/sq ft or 592 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.92
- Longitudinal: 2.08
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform


Kaveh(ex-Pensacola), Persian (ex-US) Heavy Cruiser laid down 1925 (refitted SIM)

Displacement:
10,666 t light; 11,125 t standard; 12,671 t normal; 13,908 t full load

Dimensions: Length overall / water x beam x draught
587.64 ft / 570.00 ft x 65.25 ft x 22.00 ft (normal load)
179.11 m / 173.74 m x 19.89 m x 6.71 m

Armament:
4 - 8.00" / 203 mm guns (2x2 guns), 256.00lbs / 116.12kg shells, 1925 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
6 - 8.00" / 203 mm guns (2x3 guns), 256.00lbs / 116.12kg shells, 1925 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, all raised mounts
6 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1939 Model
Dual purpose guns in deck mounts with hoists
on side, all amidships
16 - 1.57" / 40.0 mm guns (8x2 guns), 1.95lbs / 0.89kg shells, 1939 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
16 - 0.79" / 20.0 mm guns (4x4 guns), 0.24lbs / 0.11kg shells, 1939 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 2,807 lbs / 1,273 kg
Shells per gun, main battery: 120

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.00" / 76 mm 405.00 ft / 123.44 m 14.90 ft / 4.54 m
Ends: Unarmoured
Main Belt covers 109 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.00" / 76 mm 1.00" / 25 mm 3.00" / 76 mm
2nd: 3.00" / 76 mm 1.00" / 25 mm 3.00" / 76 mm

- Armour deck: 1.00" / 25 mm, Conning tower: 3.00" / 76 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 103,538 shp / 77,239 Kw = 32.00 kts
Range 10,000nm at 15.00 kts
Bunker at max displacement = 2,784 tons

Complement:
596 - 776

Cost:
£3.727 million / $14.906 million

Distribution of weights at normal displacement:
Armament: 351 tons, 2.8 %
Armour: 1,621 tons, 12.8 %
- Belts: 753 tons, 5.9 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 357 tons, 2.8 %
- Armour Deck: 477 tons, 3.8 %
- Conning Tower: 35 tons, 0.3 %
Machinery: 3,362 tons, 26.5 %
Hull, fittings & equipment: 5,182 tons, 40.9 %
Fuel, ammunition & stores: 2,005 tons, 15.8 %
Miscellaneous weights: 150 tons, 1.2 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
12,739 lbs / 5,778 Kg = 49.8 x 8.0 " / 203 mm shells or 1.5 torpedoes
Stability (Unstable if below 1.00): 1.07
Metacentric height 3.0 ft / 0.9 m
Roll period: 15.8 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.77
Seaboat quality (Average = 1.00): 1.13

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.542
Length to Beam Ratio: 8.74 : 1
'Natural speed' for length: 23.87 kts
Power going to wave formation at top speed: 60 %
Trim (Max stability = 0, Max steadiness = 100): 62
Bow angle (Positive = bow angles forward): 26.10 degrees
Stern overhang: -2.60 ft / -0.79 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 36.00 ft / 10.97 m
- Forecastle (20 %): 27.00 ft / 8.23 m
- Mid (50 %): 20.50 ft / 6.25 m
- Quarterdeck (34 %): 19.50 ft / 5.94 m
- Stern: 22.00 ft / 6.71 m
- Average freeboard: 23.50 ft / 7.16 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 108.6 %
- Above water (accommodation/working, high = better): 184.8 %
Waterplane Area: 25,763 Square feet or 2,393 Square metres
Displacement factor (Displacement / loading): 112 %
Structure weight / hull surface area: 121 lbs/sq ft or 589 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.92
- Longitudinal: 2.07
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform