Był ponoć w Royal Navy pomysł budowy krążownika typu Emerald ale uzbrojonego w działa 7,5 cala. (190 mm) Na niezmienionym z grubsza kadłubie zamierzano posadowić 4 takie działa (lub w wariancie zmodyfikowanym – 5 dział na kadłubie wydłużonym o ponad 10 m). Wydaje się to być ciekawą propozycją – gdyż działa 7,5 calowe strzelały pociskami dwukrotnie cięższymi niż 6-calowe, przy niewiele niższej szybkostrzelności niż działa Mk XII z typu Emerald. Uwzględniając mniejszą liczbę dział, ale też ich rozłożenie na oryginalnych Emerald i Enterprise można jednak spodziewać się pewnego wzrostu siły ognia i poważnego (dwukrotnego) wzrostu mocy pojedynczego trafienia. Mnie taka opcja więc się podoba. Poniżej prezentuję wariant 4 działowy.
Formidable, british heavy cruiser laid down 1919 (Engine 1921)
Displacement:
7 327 t light; 7 583 t standard; 8 618 t normal; 9 445 t full load
Dimensions: Length overall / water x beam x draught
570,35 ft / 564,24 ft x 54,49 ft x 18,44 ft (normal load)
173,84 m / 171,98 m x 16,61 m x 5,62 m
Armament:
4 - 7,48" / 190 mm guns in single mounts, 209,28lbs / 94,93kg shells, 1915 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread, 2 raised mounts - superfiring
4 - 4,02" / 102 mm guns in single mounts, 32,38lbs / 14,69kg shells, 1913 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
2 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,88kg shells, 1914 Model
Anti-aircraft guns in deck mounts
on side, all forward, all raised mounts - superfiring
Weight of broadside 971 lbs / 440 kg
Shells per gun, main battery: 150
12 - 21,0" / 533 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2,99" / 76 mm 279,92 ft / 85,32 m 11,98 ft / 3,65 m
Ends: 1,50" / 38 mm 236,75 ft / 72,16 m 13,58 ft / 4,14 m
47,57 ft / 14,50 m Unarmoured ends
Main Belt covers 76% of normal length
Main belt does not fully cover magazines and engineering spaces
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2,01" / 51 mm 0,98" / 25 mm -
- Armour deck: 0,98" / 25 mm, Conning tower: 2,99" / 76 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 90 059 shp / 67 184 Kw = 33,00 kts
Range 8 000nm at 15,00 kts
Bunker at max displacement = 1 862 tons
Complement:
446 - 581
Cost:
£1,729 million / $6,917 million
Distribution of weights at normal displacement:
Armament: 121 tons, 1,4%
Armour: 1 058 tons, 12,3%
- Belts: 613 tons, 7,1%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 34 tons, 0,4%
- Armour Deck: 384 tons, 4,5%
- Conning Tower: 27 tons, 0,3%
Machinery: 3 101 tons, 36,0%
Hull, fittings & equipment: 3 046 tons, 35,4%
Fuel, ammunition & stores: 1 291 tons, 15,0%
Miscellaneous weights: 0 tons, 0,0%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
7 294 lbs / 3 309 Kg = 34,9 x 7,5 " / 190 mm shells or 1,0 torpedoes
Stability (Unstable if below 1.00): 1,44
Metacentric height 3,8 ft / 1,1 m
Roll period: 11,8 seconds
Steadiness - As gun platform (Average = 50 %): 56 %
- Recoil effect (Restricted arc if above 1.00): 0,14
Seaboat quality (Average = 1.00): 1,11
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0,532
Length to Beam Ratio: 10,35 : 1
'Natural speed' for length: 23,75 kts
Power going to wave formation at top speed: 59 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 11,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 31,43 ft / 9,58 m
- Forecastle (14%): 27,43 ft / 8,36 m
- Mid (31%): 23,95 ft / 7,30 m (16,47 ft / 5,02 m aft of break)
- Quarterdeck (11%): 16,47 ft / 5,02 m
- Stern: 17,95 ft / 5,47 m
- Average freeboard: 19,89 ft / 6,06 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 127,6%
- Above water (accommodation/working, high = better): 122,4%
Waterplane Area: 21 101 Square feet or 1 960 Square metres
Displacement factor (Displacement / loading): 105%
Structure weight / hull surface area: 86 lbs/sq ft or 418 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,97
- Longitudinal: 1,43
- Overall: 1,01
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent



















































