Unprotected, Protected, and Light Cruisers

[The Rock Doctor]

Vast schools to be elaborated upon shortly.

[The Rock Doctor]

Constantinople Class Protected Cruiser

Constantinople, laid down 1889
Izmir, laid down 1889
Cairo, laid down 1890
Beirut, laid down 1890
Jaffa, laid down 1891
Iskenderun, laid down 1891
Antalya, laid down 1892
Damascus, laid down 1892
Alexandria, laid down 1893
Jiddah, laid down 1893
Sofya, laid down 1894
Tirana, laid down 1894


Enter ship name, Enter country Enter ship type laid down 1891 (Engine 1890)

Displacement:
   2,136 t light; 2,224 t standard; 2,509 t normal; 2,736 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (282.15 ft / 278.87 ft) x 42.65 ft x (14.76 / 15.77 ft)
   (86.00 m / 85.00 m) x 13.00 m  x (4.50 / 4.81 m)

Armament:
      8 - 4.13" / 105 mm 35.0 cal guns - 40.12lbs / 18.20kg shells, 200 per gun
     Breech loading guns in deck mounts, 1891 Model
     2 x Single mounts on centreline ends, evenly spread
     6 x Single mounts on sides, evenly spread
      4 - 1.46" / 37.0 mm 35.0 cal guns - 1.45lbs / 0.66kg shells, 500 per gun
     Breech loading guns in deck mounts, 1891 Model
     4 x Single mounts on sides, evenly spread
      Weight of broadside 327 lbs / 148 kg
      Main Torpedoes
      2 - 13.8" / 350 mm, 13.12 ft / 4.00 m torpedoes - 0.208 t each, 0.416 t total
   In 2 sets of deck mounted carriage/fixed tubes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.97" / 50 mm   0.79" / 20 mm            -
   2nd:   0.79" / 20 mm   0.39" / 10 mm            -

   - Protected deck - single deck:
   For and Aft decks: 1.97" / 50 mm
   Forecastle: 0.98" / 25 mm  Quarter deck: 1.97" / 50 mm

   - Conning towers: Forward 3.94" / 100 mm, Aft 3.94" / 100 mm

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 2 shafts, 4,021 ihp / 3,000 Kw = 16.94 kts
   Range 4,000nm at 10.00 kts
   Bunker at max displacement = 512 tons (100% coal)

Complement:
   176 - 230

Cost:
   £0.194 million / $0.777 million

Distribution of weights at normal displacement:
   Armament: 34 tons, 1.3 %
      - Guns: 33 tons, 1.3 %
      - Weapons: 1 tons, 0.0 %
   Armour: 367 tons, 14.6 %
      - Armament: 58 tons, 2.3 %
      - Armour Deck: 278 tons, 11.1 %
      - Conning Towers: 31 tons, 1.2 %
   Machinery: 781 tons, 31.1 %
   Hull, fittings & equipment: 855 tons, 34.1 %
   Fuel, ammunition & stores: 372 tons, 14.8 %
   Miscellaneous weights: 100 tons, 4.0 %
      - Hull above water: 50 tons
      - On freeboard deck: 50 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     3,257 lbs / 1,477 Kg = 92.2 x 4.1 " / 105 mm shells or 5.1 torpedoes
   Stability (Unstable if below 1.00): 1.53
   Metacentric height 2.9 ft / 0.9 m
   Roll period: 10.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.12
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.500 / 0.511
   Length to Beam Ratio: 6.54 : 1
   'Natural speed' for length: 16.70 kts
   Power going to wave formation at top speed: 47 %
   Trim (Max stability = 0, Max steadiness = 100): 35
   Bow angle (Positive = bow angles forward): -10.00 degrees
   Stern overhang: 3.28 ft / 1.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Forward deck:   30.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Aft deck:   35.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Quarter deck:   15.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Average freeboard:      16.40 ft / 5.00 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 108.5 %
      - Above water (accommodation/working, high = better): 140.2 %
   Waterplane Area: 7,925 Square feet or 736 Square metres
   Displacement factor (Displacement / loading): 118 %
   Structure weight / hull surface area: 62 lbs/sq ft or 305 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.86
      - Longitudinal: 3.94
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[The Rock Doctor]

Sinop Class Protected Cruiser

Sinop, laid down 1895
Trabzon, laid down 1895
Ankara, laid down 1896
Van, laid down 1896
Kars, laid down 1897
Selanik, laid down 1897
Belgrad, laid down 1897


Enter ship name, Enter country Enter ship type laid down 1895 (Engine 1890)

Displacement:
   2,739 t light; 2,834 t standard; 3,168 t normal; 3,435 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (347.77 ft / 344.49 ft) x 42.65 ft x (15.09 / 16.05 ft)
   (106.00 m / 105.00 m) x 13.00 m  x (4.60 / 4.89 m)

Armament:
      8 - 4.13" / 105 mm 40.0 cal guns - 33.85lbs / 15.36kg shells, 200 per gun
     Breech loading guns in deck mounts, 1895 Model
     8 x Single mounts on sides, evenly spread
      4 - 1.46" / 37.0 mm 35.0 cal guns - 1.45lbs / 0.66kg shells, 500 per gun
     Breech loading guns in deck mounts, 1895 Model
     4 x Single mounts on sides, evenly spread
      Weight of broadside 277 lbs / 125 kg
      Main Torpedoes
      2 - 17.7" / 450 mm, 16.40 ft / 5.00 m torpedoes - 0.540 t each, 1.079 t total
   In 2 sets of deck mounted carriage/fixed tubes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.97" / 50 mm   0.79" / 20 mm            -
   2nd:   0.79" / 20 mm   0.39" / 10 mm            -

   - Protected deck - single deck:
   For and Aft decks: 0.98" / 25 mm
   Forecastle: 0.98" / 25 mm  Quarter deck: 0.98" / 25 mm

   - Conning towers: Forward 3.94" / 100 mm, Aft 3.94" / 100 mm

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 2 shafts, 6,702 ihp / 5,000 Kw = 19.04 kts
   Range 4,000nm at 10.00 kts
   Bunker at max displacement = 600 tons (100% coal)

Complement:
   210 - 274

Cost:
   £0.290 million / $1.160 million

Distribution of weights at normal displacement:
   Armament: 40 tons, 1.3 %
      - Guns: 39 tons, 1.2 %
      - Weapons: 1 tons, 0.0 %
   Armour: 274 tons, 8.7 %
      - Armament: 58 tons, 1.8 %
      - Armour Deck: 180 tons, 5.7 %
      - Conning Towers: 37 tons, 1.2 %
   Machinery: 1,301 tons, 41.1 %
   Hull, fittings & equipment: 1,051 tons, 33.2 %
   Fuel, ammunition & stores: 429 tons, 13.5 %
   Miscellaneous weights: 73 tons, 2.3 %
      - On freeboard deck: 73 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     2,503 lbs / 1,135 Kg = 70.9 x 4.1 " / 105 mm shells or 1.5 torpedoes
   Stability (Unstable if below 1.00): 1.49
   Metacentric height 2.8 ft / 0.8 m
   Roll period: 10.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 80 %
         - Recoil effect (Restricted arc if above 1.00): 0.10
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.500 / 0.510
   Length to Beam Ratio: 8.08 : 1
   'Natural speed' for length: 18.56 kts
   Power going to wave formation at top speed: 45 %
   Trim (Max stability = 0, Max steadiness = 100): 40
   Bow angle (Positive = bow angles forward): -10.00 degrees
   Stern overhang: 3.28 ft / 1.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Forward deck:   30.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Aft deck:   35.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Quarter deck:   15.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Average freeboard:      16.40 ft / 5.00 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 137.3 %
      - Above water (accommodation/working, high = better): 144.9 %
   Waterplane Area: 9,789 Square feet or 909 Square metres
   Displacement factor (Displacement / loading): 103 %
   Structure weight / hull surface area: 62 lbs/sq ft or 301 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.89
      - Longitudinal: 2.67
      - Overall: 1.00
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[The Rock Doctor]

Baghdad Class Protected Cruiser

Flotilla leaders for the Ottoman torpedo-boats.

Baghdad, laid down 1900
Basra, laid down 1900
Aleppo, laid down 1901

Baghdad class, laid down 1900

Displacement:
   3,504 t light; 3,642 t standard; 3,971 t normal; 4,234 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (393.70 ft / 390.42 ft) x 42.65 ft x (17.39 / 18.23 ft)
   (120.00 m / 119.00 m) x 13.00 m  x (5.30 / 5.56 m)

Armament:
      10 - 4.13" / 105 mm 40.0 cal guns - 33.85lbs / 15.36kg shells, 200 per gun
     Breech loading guns in deck mounts, 1900 Model
     8 x Single mounts on centreline ends, evenly spread
     2 x Single mounts on centreline ends, evenly spread
      4 - 3.46" / 88.0 mm 35.0 cal guns - 19.50lbs / 8.84kg shells, 500 per gun
     Quick firing guns in deck mounts, 1900 Model
     4 x Single mounts on sides, evenly spread
      Weight of broadside 417 lbs / 189 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.97" / 50 mm   0.79" / 20 mm            -
   2nd:   0.79" / 20 mm   0.39" / 10 mm            -

   - Protected deck - single deck:
   For and Aft decks: 0.98" / 25 mm
   Forecastle: 0.98" / 25 mm  Quarter deck: 0.98" / 25 mm

   - Conning towers: Forward 3.94" / 100 mm, Aft 3.94" / 100 mm

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 12,735 ihp / 9,500 Kw = 22.03 kts
   Range 4,000nm at 10.00 kts
   Bunker at max displacement = 591 tons (100% coal)

Complement:
   249 - 325

Cost:
   £0.411 million / $1.644 million

Distribution of weights at normal displacement:
   Armament: 58 tons, 1.5 %
      - Guns: 58 tons, 1.5 %
   Armour: 310 tons, 7.8 %
      - Armament: 68 tons, 1.7 %
      - Armour Deck: 200 tons, 5.0 %
      - Conning Towers: 43 tons, 1.1 %
   Machinery: 1,934 tons, 48.7 %
   Hull, fittings & equipment: 1,100 tons, 27.7 %
   Fuel, ammunition & stores: 467 tons, 11.8 %
   Miscellaneous weights: 99 tons, 2.5 %
      - Hull below water: 4 tons
      - Hull above water: 16 tons
      - On freeboard deck: 69 tons
      - Above deck: 10 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     1,907 lbs / 865 Kg = 54.0 x 4.1 " / 105 mm shells or 1.3 torpedoes
   Stability (Unstable if below 1.00): 1.61
   Metacentric height 3.1 ft / 0.9 m
   Roll period: 10.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.10
   Seaboat quality  (Average = 1.00): 1.63

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.480 / 0.488
   Length to Beam Ratio: 9.15 : 1
   'Natural speed' for length: 19.76 kts
   Power going to wave formation at top speed: 47 %
   Trim (Max stability = 0, Max steadiness = 100): 43
   Bow angle (Positive = bow angles forward): -10.00 degrees
   Stern overhang: 3.28 ft / 1.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  13.12 ft / 4.00 m,  13.12 ft / 4.00 m
      - Forward deck:   30.00 %,  13.12 ft / 4.00 m,  13.12 ft / 4.00 m
      - Aft deck:   35.00 %,  13.12 ft / 4.00 m,  13.12 ft / 4.00 m
      - Quarter deck:   15.00 %,  13.12 ft / 4.00 m,  13.12 ft / 4.00 m
      - Average freeboard:      13.12 ft / 4.00 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 163.3 %
      - Above water (accommodation/working, high = better): 108.9 %
   Waterplane Area: 10,897 Square feet or 1,012 Square metres
   Displacement factor (Displacement / loading): 87 %
   Structure weight / hull surface area: 63 lbs/sq ft or 306 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.49
      - Overall: 1.00
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[The Rock Doctor]

Luxor Class Protected Cruiser

The Luxor class protected cruisers have the same armament as the preceding Baghdad class, but four of the guns are now on the centreline, two in superfiring positions.  Ottoman conservatism about new machinery does not extend to small cruisers so a full turbine kit is installed.

Two units are laid down in 2/04, with a further three being eyeballed for the near term, as the old Constantinople class is in need of replacement.

Luxor, laid down 1904
Khartoum, laid down 1904

Enter ship name, Enter country Enter ship type laid down 1905

Displacement:
   3,388 t light; 3,527 t standard; 3,971 t normal; 4,326 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (390.42 ft / 390.42 ft) x 42.65 ft x (17.39 / 18.53 ft)
   (119.00 m / 119.00 m) x 13.00 m  x (5.30 / 5.65 m)

Armament:
      10 - 4.13" / 105 mm 40.0 cal guns - 33.85lbs / 15.36kg shells, 250 per gun
     Breech loading guns in deck mounts, 1905 Model
     4 x Single mounts on centreline, evenly spread
      2 raised mounts
     6 x Single mounts on sides, evenly spread
      4 - 3.46" / 88.0 mm 35.0 cal guns - 19.50lbs / 8.84kg shells, 300 per gun
     Quick firing guns in deck mounts, 1905 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 417 lbs / 189 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.97" / 50 mm   0.79" / 20 mm            -
   2nd:   0.79" / 20 mm   0.39" / 10 mm            -

   - Armoured deck - multiple decks:
   For and Aft decks: 1.57" / 40 mm
   Forecastle: 0.98" / 25 mm  Quarter deck: 0.98" / 25 mm

   - Conning towers: Forward 3.94" / 100 mm, Aft 3.94" / 100 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 18,000 shp / 13,428 Kw = 24.06 kts
   Range 5,000nm at 10.00 kts
   Bunker at max displacement = 799 tons (90% coal)

Complement:
   249 - 325

Cost:
   £0.344 million / $1.376 million

Distribution of weights at normal displacement:
   Armament: 58 tons, 1.5 %
      - Guns: 58 tons, 1.5 %
   Armour: 408 tons, 10.3 %
      - Armament: 68 tons, 1.7 %
      - Armour Deck: 298 tons, 7.5 %
      - Conning Towers: 43 tons, 1.1 %
   Machinery: 1,485 tons, 37.4 %
   Hull, fittings & equipment: 1,228 tons, 30.9 %
   Fuel, ammunition & stores: 583 tons, 14.7 %
   Miscellaneous weights: 208 tons, 5.2 %
      - Hull above water: 208 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     2,997 lbs / 1,359 Kg = 84.8 x 4.1 " / 105 mm shells or 0.7 torpedoes
   Stability (Unstable if below 1.00): 1.39
   Metacentric height 2.5 ft / 0.8 m
   Roll period: 11.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.16
   Seaboat quality  (Average = 1.00): 1.71

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.480 / 0.491
   Length to Beam Ratio: 9.15 : 1
   'Natural speed' for length: 19.76 kts
   Power going to wave formation at top speed: 52 %
   Trim (Max stability = 0, Max steadiness = 100): 41
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: -3.28 ft / -1.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  15.75 ft / 4.80 m,  15.75 ft / 4.80 m
      - Forward deck:   30.00 %,  15.75 ft / 4.80 m,  15.75 ft / 4.80 m
      - Aft deck:   35.00 %,  15.75 ft / 4.80 m,  15.75 ft / 4.80 m
      - Quarter deck:   15.00 %,  15.75 ft / 4.80 m,  15.75 ft / 4.80 m
      - Average freeboard:      15.75 ft / 4.80 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 132.2 %
      - Above water (accommodation/working, high = better): 131.3 %
   Waterplane Area: 10,897 Square feet or 1,012 Square metres
   Displacement factor (Displacement / loading): 106 %
   Structure weight / hull surface area: 64 lbs/sq ft or 314 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.92
      - Longitudinal: 2.14
      - Overall: 1.00
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather