Corvettes, Avisos (Sloops), and other combatants

[Kaiser Kirk]

Corvettes, Avisos (Sloops), and others
Official Statistics of the Regina Marina...which are mostly right


Names : Partenope, Calatafima, Caprera, Aretusa, Iride, Minerva
Type : Aviso (Brig Sloop)
Class Name :   Partenope
No. in Class :  6
Completed :   1894
Refitted : 

Tonnage (n) :   1,000
Armanent :   2 x 4.7"/40, 4x57mm/43
Armor : None
Speed, knts :  18
Range, nm :  1800

Names : Touno, Fulmine   
Type : Monitor
Class Name :  Touno
No. in Class :  2
Completed :  1899
Refitted : 

Tonnage (n) :   7,000
Armanent :   2x17"/27, 8x4.7"/45, 10x65/115
Armor :Compound    150mmBelt,  30mmDeck
Speed, knts :   14
Range, nm :  4500

Names : Tartaruga , Conchiglia, Lepre 
Type : River Gunboat
Class Name :  Tartaruga "Tortoise"
No. in Class :  3
Completed :  1903
Refitted : 

Tonnage (n) :   250
Armanent :   1x 75L21, 2x 11.4L95 Gardner, 4x7.5L70 MG
Armor :Compound    7mmBelt,  13mmDeck
Speed, knts :   8
Range, nm :  1200

[Kaiser Kirk]

Partenope, Calatafima, Caprera, Aretusa, Iride, Minerva

Partenope Class
Italian Aviso (brig sloop) laid down 1893 (Engine 1890)

Displacement:
   833 t light; 862 t standard; 935 t normal; 994 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (232.94 ft / 229.66 ft) x 26.97 ft x (11.42 / 11.93 ft)
   (71.00 m / 70.00 m) x 8.22 m  x (3.48 / 3.64 m)

Armament:
      2 - 4.70" / 119 mm 45.0 cal guns - 45.13lbs / 20.47kg shells, 120 per gun
     Quick firing guns in deck mounts, 1892 Model
     1 x Single mount on centreline, forward deck forward
     1 x Single mount on centreline, aft evenly spread
      4 - 2.24" / 57.0 mm 43.0 cal guns - 6.02lbs / 2.73kg shells, 250 per gun
     Quick firing guns in deck mounts, 1884 Model
     4 x Single mounts on side ends, evenly spread
      4 - 1.46" / 37.0 mm 30.0 cal guns - 0.99lbs / 0.45kg shells, 500 per gun
     Quick firing guns in deck mounts, 1888 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      Weight of broadside 118 lbs / 54 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.98" / 25 mm         -               -
   2nd:   0.98" / 25 mm         -               -
   3rd:   0.39" / 10 mm         -               -

Bigantine rigged, can make 7.5kts

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 2,917 ihp / 2,176 Kw = 18.10 kts
   Range 1,800nm at 10.00 kts
   Bunker at max displacement = 133 tons (100% coal)

Complement:
   83 - 109

Cost:
   £0.096 million / $0.386 million

Distribution of weights at normal displacement:
   Armament: 23 tons, 2.5 %
   Armour: 17 tons, 1.9 %
      - Armament: 17 tons, 1.9 %
   Machinery: 435 tons, 46.5 %
   Hull, fittings & equipment: 295 tons, 31.5 %
   Fuel, ammunition & stores: 103 tons, 11.0 %
   Miscellaneous weights: 62 tons, 6.6 %
      - Hull below water: 20 tons
      - Hull above water: 33 tons
      - Above deck: 8 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     420 lbs / 191 Kg = 8.1 x 4.7 " / 119 mm shells or 0.3 torpedoes
   Stability (Unstable if below 1.00): 1.39
   Metacentric height 1.2 ft / 0.4 m
   Roll period: 10.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 96 %
         - Recoil effect (Restricted arc if above 1.00): 0.19
   Seaboat quality  (Average = 1.00): 1.91

Hull form characteristics:
   Hull has raised forecastle,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.463 / 0.471
   Length to Beam Ratio: 8.52 : 1
   'Natural speed' for length: 15.15 kts
   Power going to wave formation at top speed: 51 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): -12.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   25.00 %,  16.67 ft / 5.08 m,  15.78 ft / 4.81 m
      - Forward deck:   30.00 %,  8.46 ft / 2.58 m,  8.46 ft / 2.58 m
      - Aft deck:   30.00 %,  8.46 ft / 2.58 m,  8.46 ft / 2.58 m
      - Quarter deck:   15.00 %,  8.46 ft / 2.58 m,  8.46 ft / 2.58 m
      - Average freeboard:      10.38 ft / 3.16 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 163.4 %
      - Above water (accommodation/working, high = better): 77.6 %
   Waterplane Area: 3,994 Square feet or 371 Square metres
   Displacement factor (Displacement / loading): 77 %
   Structure weight / hull surface area: 41 lbs/sq ft or 202 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.90
      - Longitudinal: 2.63
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Bigantine rigged, can make 7.5kts

24: Has 2 bow torpedo, and 2 torpedoes on each beam. 4 reloads per tube.

[Kaiser Kirk]

Touno, Fulmine   

Tuono Class
Italian Monitor laid down 1898 (Engine 1900)

Displacement:
   5,759 t light; 6,385 t standard; 6,884 t normal; 7,283 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (285.43 ft / 278.87 ft) x 59.06 ft (Bulges 68.90 ft) x (22.97 / 24.19 ft)
   (87.00 m / 85.00 m) x 18.00 m (Bulges 21.00 m)  x (7.00 / 7.37 m)

Armament:
      2 - 17.00" / 432 mm 27.0 cal guns - 2,001.80lbs / 908.00kg shells, 200 per gun
     Breech loading guns in turret on barbette mount, 1876 Model
     1 x Twin mount on centreline, forward deck aft
      8 - 4.70" / 119 mm 45.0 cal guns - 45.13lbs / 20.47kg shells, 160 per gun
     Breech loading guns in casemate mounts, 1892 Model
     6 x Single mounts on sides, aft evenly spread
     2 x Single mounts on sides, forward deck aft
      10 - 2.56" / 65.0 mm 115.0 cal guns - 10.02lbs / 4.54kg shells, 200 per gun
     Quick firing guns in deck mounts, 1894 Model
     10 x Single mounts on sides, evenly spread
      10 raised mounts
      8 - 0.41" / 10.4 mm 94.0 cal guns - 0.04lbs / 0.02kg shells, 500 per gun
     Machine guns in deck mounts, 1881 Model
     4 x Single mounts on sides amidships
      4 double raised mounts
      Weight of broadside 4,465 lbs / 2,025 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   5.91" / 150 mm   147.64 ft / 45.00 m   8.79 ft / 2.68 m
   Ends:   1.97" / 50 mm   131.20 ft / 39.99 m   8.79 ft / 2.68 m
   Upper:   4.72" / 120 mm   147.64 ft / 45.00 m   8.01 ft / 2.44 m
     Main Belt covers 81 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   11.8" / 300 mm   9.84" / 250 mm      9.84" / 250 mm
   2nd:   1.97" / 50 mm   0.20" / 5 mm            -
   3rd:   0.39" / 10 mm         -               -
   4th:   0.39" / 10 mm         -               -

   - Protected deck - multiple decks: 2.95" / 75 mm For and Aft decks
   Forecastle: 1.18" / 30 mm  Quarter deck: 1.18" / 30 mm

   - Conning towers: Forward 5.91" / 150 mm,  Aft 0.00" / 0 mm

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 4 shafts, 3,805 ihp / 2,838 Kw = 14.00 kts
   Range 4,500nm at 10.00 kts
   Bunker at max displacement = 898 tons (100% coal)

Complement:
   377 - 491

Cost:
   £0.541 million / $2.165 million

Distribution of weights at normal displacement:
   Armament: 494 tons, 7.2 %
   Armour: 1,855 tons, 27.0 %
      - Belts: 728 tons, 10.6 %
      - Armament: 521 tons, 7.6 %
      - Armour Deck: 560 tons, 8.1 %
      - Conning Tower: 46 tons, 0.7 %
   Machinery: 594 tons, 8.6 %
   Hull, fittings & equipment: 2,305 tons, 33.5 %
   Fuel, ammunition & stores: 1,124 tons, 16.3 %
   Miscellaneous weights: 510 tons, 7.4 %
      - Hull below water: 190 tons
      - Hull above water: 20 tons
      - On freeboard deck: 300 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     8,905 lbs / 4,039 Kg = 3.6 x 17.0 " / 432 mm shells or 2.0 torpedoes
   Stability (Unstable if below 1.00): 1.40
   Metacentric height 4.1 ft / 1.2 m
   Roll period: 14.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 86 %
         - Recoil effect (Restricted arc if above 1.00): 0.46
   Seaboat quality  (Average = 1.00): 1.72

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a round stern
   Block coefficient (normal/deep): 0.546 / 0.549
   Length to Beam Ratio: 4.05 : 1
   'Natural speed' for length: 16.70 kts
   Power going to wave formation at top speed: 47 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): -22.00 degrees
   Stern overhang: -6.56 ft / -2.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  11.55 ft / 3.52 m,  11.55 ft / 3.52 m
      - Forward deck:   30.00 %,  11.55 ft / 3.52 m,  11.55 ft / 3.52 m
      - Aft deck:   35.00 %,  11.55 ft / 3.52 m,  11.55 ft / 3.52 m
      - Quarter deck:   15.00 %,  11.55 ft / 3.52 m,  11.55 ft / 3.52 m
      - Average freeboard:      11.55 ft / 3.52 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 70.7 %
      - Above water (accommodation/working, high = better): 66.8 %
   Waterplane Area: 11,450 Square feet or 1,064 Square metres
   Displacement factor (Displacement / loading): 115 %
   Structure weight / hull surface area: 142 lbs/sq ft or 695 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.86
      - Longitudinal: 3.97
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is cramped
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather


with the reconstruction of the Italia class and the scrapping of the Duillio class, material became available to construct monitors, reusing the guns of the Italia class.

Elevation on the 17"/27 in the new mountings is 45degrees to allow a maximum range of 15,200m (16,623yds)
Partial charges to allow howitzer-like shooting are provided.

Upper belt extends from +3.52 to +1.08
Main belt extends from +1.08 to -1.6

A 30mm deck roofs the upper belt at the weather deck level.
A 45mmprotected deck extends to the bottom of the main belt.
A 30mm deck extends for and aft of the citadel

Miscellaneous wieght :
2x 85t : 2 sets torpedo nets, one on booms, one on floats for a double layer on bombardment missions
20t - launch in aft compartment for deploying 2nd net.
300t - design reserve

[Kaiser Kirk]

Tartaruga , Conchiglia, Lepre

"Tortoise", Italian River Gunboat laid down 1903 (Engine 1900)

Displacement:
   249 t light; 255 t standard; 261 t normal; 266 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (137.80 ft / 134.51 ft) x 26.25 ft (Bulges 26.90 ft) x (3.61 / 3.67 ft)
   (42.00 m / 41.00 m) x 8.00 m (Bulges 8.20 m)  x (1.10 / 1.12 m)

Armament:
      1 - 2.95" / 75.0 mm 21.0 cal gun - 11.57lbs / 5.25kg shells, 120 per gun Howitzer
     Breech loading gun in deck mount, 1890 Model
     1 x Single mount on centreline aft
      2 - 0.45" / 11.4 mm 94.0 cal guns - 0.01lbs / 0.00kg shells, 1,500 per gun
     Machine guns in deck mount, 1881 Model
     1 x Twin mount on centreline forward
      4 - 0.30" / 7.5 mm 70.0 cal guns - 0.01lbs / 0.00kg shells, 4,500 per gun
     Machine guns in deck mounts, 1883 Model
     4 x Single mounts on sides amidships
      4 double raised mounts
      Weight of broadside 12 lbs / 5 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   0.28" / 7 mm     67.26 ft / 20.50 m   6.14 ft / 1.87 m
   Ends:   0.28" / 7 mm     67.22 ft / 20.49 m   6.14 ft / 1.87 m
   Upper:   0.28" / 7 mm     67.26 ft / 20.50 m   4.72 ft / 1.44 m
     Main Belt covers 77 % of normal length

   - Hull Bulges:
      0.24" / 6 mm     98.43 ft / 30.00 m   3.61 ft / 1.10 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.28" / 7 mm   0.28" / 7 mm            -
   2nd:   0.28" / 7 mm   0.28" / 7 mm            -
   3rd:   0.28" / 7 mm         -               -

   - Armoured deck - multiple decks: 0.51" / 13 mm For and Aft decks
   Forecastle: 0.51" / 13 mm  Quarter deck: 0.51" / 13 mm

   - Conning towers: Forward 0.28" / 7 mm,  Aft 0.00" / 0 mm

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 2 shafts, 92 ihp / 69 Kw = 8.00 kts
   Range 1,200nm at 5.00 kts
   Bunker at max displacement = 10 tons (100% coal)

Complement:
   32 - 42

Cost:
   £0.011 million / $0.046 million

Distribution of weights at normal displacement:
   Armament: 1 tons, 0.5 %
   Armour: 55 tons, 21.0 %
      - Belts: 14 tons, 5.4 %
      - Bulges: 3 tons, 1.2 %
      - Armament: 10 tons, 4.0 %
      - Armour Deck: 27 tons, 10.3 %
      - Conning Tower: 0 tons, 0.1 %
   Machinery: 16 tons, 6.2 %
   Hull, fittings & equipment: 89 tons, 34.1 %
   Fuel, ammunition & stores: 12 tons, 4.5 %
   Miscellaneous weights: 88 tons, 33.7 %
      - Hull below water: 48 tons
      - Hull above water: 25 tons
      - On freeboard deck: 15 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     814 lbs / 369 Kg = 63.2 x 3.0 " / 75 mm shells or 0.9 torpedoes
   Stability (Unstable if below 1.00): 1.90
   Metacentric height 1.9 ft / 0.6 m
   Roll period: 8.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 51 %
         - Recoil effect (Restricted arc if above 1.00): 0.01
   Seaboat quality  (Average = 1.00): 1.02

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.700 / 0.701
   Length to Beam Ratio: 5.00 : 1
   'Natural speed' for length: 11.60 kts
   Power going to wave formation at top speed: 29 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): -15.00 degrees
   Stern overhang: -3.28 ft / -1.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   25.00 %,  4.59 ft / 1.40 m,  4.59 ft / 1.40 m
      - Forward deck:   25.00 %,  4.59 ft / 1.40 m,  4.59 ft / 1.40 m
      - Aft deck:   25.00 %,  4.59 ft / 1.40 m,  4.59 ft / 1.40 m
      - Quarter deck:   25.00 %,  4.59 ft / 1.40 m,  4.59 ft / 1.40 m
      - Average freeboard:      4.59 ft / 1.40 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 53.4 %
      - Above water (accommodation/working, high = better): 77.4 %
   Waterplane Area: 2,830 Square feet or 263 Square metres
   Displacement factor (Displacement / loading): 146 %
   Structure weight / hull surface area: 27 lbs/sq ft or 132 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.01
      - Longitudinal: 0.99
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is cramped

Warning: Armour belts too tall for hull

Propulsion :
It takes 20hp to steam at 5knts.


Miscellaneous Weight

On Deck
10t - big winches fore& aft with lots of chain
5t - 2.5 ton longboat

Hull Above Water
5t - Forced air ventilation for ship (no AC this early)
10t - Sick bay & dedicated Corpman
10t - Repair shop & stores

Below Water
16t - Space and storage for 4 "Explorers"
20t - Space and storage for 10 Marines
12t - Cargo Hold

The 75/21 is a light Howitzer, which can be used for direct or indirect fire.

Armor : 6mm of Bulge and "Armor deck" represent a double hull and bottom, 0.1m away from the main hull and bottom.   7mm of armor is actual armor laid on top of hull steel, , intended to represent a bulletproof hull - particularly against the old trade rifles one would find in Africa.