WesWorld

So here is my second post, here is the SNF Inquebrantable (Unbreakable). This battlecriser is, I think, flawless. In other words: It's full of flaws (Well maybe not that bad). To be honest, made this ship was very fun and I can't wait to impruve it.

I also made a 1925 version with some little changes, if you want to see it.




SNF Inquebrantable, Battle Cruiser laid down 1930

Displacement:
23.138 t light; 24.413 t standard; 26.371 t normal; 27.938 t full load

Dimensions: Length overall / water x beam x draught
764,57 ft / 721,78 ft x 78,74 ft x 29,53 ft (normal load)
233,04 m / 220,00 m x 24,00 m x 9,00 m

Armament:
10 - 12,00" / 305 mm guns (4 mounts), 864,00lbs / 391,90kg shells, 1930 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
8 - 4,00" / 102 mm guns in single mounts, 32,00lbs / 14,51kg shells, 1930 Model
Quick firing guns in deck mounts
on side, all amidships
8 guns in hull casemates - Limited use in heavy seas
16 - 0,50" / 12,7 mm guns (4x4 guns), 0,06lbs / 0,03kg shells, 1930 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
8 - 0,50" / 12,7 mm guns (2x4 guns), 0,06lbs / 0,03kg shells, 1930 Model
Anti-aircraft guns in deck mounts
on centreline, all forward
Weight of broadside 8.898 lbs / 4.036 kg
Shells per gun, main battery: 150

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 6,89" / 175 mm 511,81 ft / 156,00 m 10,43 ft / 3,18 m
Ends: 1,57" / 40 mm 209,94 ft / 63,99 m 10,43 ft / 3,18 m
Upper: 3,74" / 95 mm 469,16 ft / 143,00 m 8,01 ft / 2,44 m
Main Belt covers 109 % of normal length

- Torpedo Bulkhead:
5,31" / 135 mm 469,16 ft / 143,00 m 27,10 ft / 8,26 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 5,91" / 150 mm 1,18" / 30 mm 3,94" / 100 mm

- Armour deck: 3,94" / 100 mm, Conning tower: 3,54" / 90 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 129.049 shp / 96.271 Kw = 31,00 kts
Range 5.500nm at 18,00 kts
Bunker at max displacement = 3.525 tons

Complement:
1.034 - 1.345

Cost:
£9,583 million / $38,332 million

Distribution of weights at normal displacement:
Armament: 1.112 tons, 4,2 %
Armour: 8.544 tons, 32,4 %
- Belts: 2.243 tons, 8,5 %
- Torpedo bulkhead: 2.500 tons, 9,5 %
- Armament: 843 tons, 3,2 %
- Armour Deck: 2.889 tons, 11,0 %
- Conning Tower: 68 tons, 0,3 %
Machinery: 3.911 tons, 14,8 %
Hull, fittings & equipment: 9.562 tons, 36,3 %
Fuel, ammunition & stores: 3.233 tons, 12,3 %
Miscellaneous weights: 10 tons, 0,0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
35.899 lbs / 16.284 Kg = 41,6 x 12,0 " / 305 mm shells or 5,3 torpedoes
Stability (Unstable if below 1.00): 1,19
Metacentric height 4,8 ft / 1,5 m
Roll period: 15,1 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0,83
Seaboat quality (Average = 1.00): 1,21

Hull form characteristics:
Hull has rise aft of midbreak, low quarterdeck
Block coefficient: 0,550
Length to Beam Ratio: 9,17 : 1
'Natural speed' for length: 26,87 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 30,00 degrees
Stern overhang: 29,53 ft / 9,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22,97 ft / 7,00 m
- Forecastle (20 %): 22,97 ft / 7,00 m
- Mid (50 %): 19,69 ft / 6,00 m (26,25 ft / 8,00 m aft of break)
- Quarterdeck (15 %): 19,69 ft / 6,00 m (26,25 ft / 8,00 m before break)
- Stern: 19,69 ft / 6,00 m
- Average freeboard: 23,13 ft / 7,05 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 108,9 %
- Above water (accommodation/working, high = better): 175,2 %
Waterplane Area: 39.664 Square feet or 3.685 Square metres
Displacement factor (Displacement / loading): 104 %
Structure weight / hull surface area: 152 lbs/sq ft or 744 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,97
- Longitudinal: 1,40
- Overall: 1,00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily

Out of curiosity are these ships part of a historical world, wesworld or some other alternate history? If historical (or wesworld) these ships would seem under armored and/or undersized given that Jutland would have a major influence on battlecruiser designs. Your 1925 date seems more reasonable given the current specs for the 1930 design but even then maybe a bit under armored. This design is sort of on par with a Renown or Queen Mary design but with smaller guns in a more modern layout.

To be honest I still not completely know how to balance the engine,
the armor and the displacement.
And, yes these ships are part of an alternative world. The navy that made them is in a lack of budget. The general staff is divided betwen the ones who trust in the power of their army to face an enemie invasion and the few who want to avoid the posibility of the enemies even toching their precious land.
The whole idea of the navy that they are trying to create is constructed around the objective of take out as many ships as they can in a single surprise atack. The atack in cuestion is being planed for 1930, against one of their neighbors. The name of the operation is: "The Only Chance"
Of course their enemie is way to strong in the sea to be defeated in a face to face combat.

The 1925 version:


SNF Inquebrantable, Battle Cruiser laid down 1925

Displacement:
23.217 t light; 24.491 t standard; 26.371 t normal; 27.875 t full load

Dimensions: Length overall / water x beam x draught
764,57 ft / 721,78 ft x 78,74 ft x 29,53 ft (normal load)
233,04 m / 220,00 m x 24,00 m x 9,00 m

Armament:
10 - 12,00" / 305 mm guns (4 mounts), 864,00lbs / 391,90kg shells, 1925 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
8 - 4,00" / 102 mm guns in single mounts, 32,00lbs / 14,51kg shells, 1925 Model
Quick firing guns in deck mounts
on side, all amidships
8 guns in hull casemates - Limited use in heavy seas
16 - 0,50" / 12,7 mm guns (4x4 guns), 0,06lbs / 0,03kg shells, 1925 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
8 - 0,50" / 12,7 mm guns (2x4 guns), 0,06lbs / 0,03kg shells, 1925 Model
Anti-aircraft guns in deck mounts
on centreline, all forward
Weight of broadside 8.898 lbs / 4.036 kg
Shells per gun, main battery: 150

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 6,89" / 175 mm 511,81 ft / 156,00 m 10,43 ft / 3,18 m
Ends: 1,57" / 40 mm 209,94 ft / 63,99 m 10,43 ft / 3,18 m
Upper: 3,54" / 90 mm 469,16 ft / 143,00 m 8,01 ft / 2,44 m
Main Belt covers 109 % of normal length
Main belt does not fully cover magazines and engineering spaces

- Torpedo Bulkhead:
5,12" / 130 mm 469,16 ft / 143,00 m 27,10 ft / 8,26 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 5,12" / 130 mm 1,18" / 30 mm 3,94" / 100 mm

- Armour deck: 3,94" / 100 mm, Conning tower: 3,54" / 90 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 129.049 shp / 96.271 Kw = 31,00 kts
Range 5.000nm at 18,00 kts
Bunker at max displacement = 3.383 tons

Complement:
1.034 - 1.345

Cost:
£7,637 million / $30,547 million

Distribution of weights at normal displacement:
Armament: 1.112 tons, 4,2 %
Armour: 8.397 tons, 31,8 %
- Belts: 2.212 tons, 8,4 %
- Torpedo bulkhead: 2.408 tons, 9,1 %
- Armament: 820 tons, 3,1 %
- Armour Deck: 2.889 tons, 11,0 %
- Conning Tower: 68 tons, 0,3 %
Machinery: 4.190 tons, 15,9 %
Hull, fittings & equipment: 9.508 tons, 36,1 %
Fuel, ammunition & stores: 3.154 tons, 12,0 %
Miscellaneous weights: 10 tons, 0,0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
34.457 lbs / 15.629 Kg = 39,9 x 12,0 " / 305 mm shells or 5,0 torpedoes
Stability (Unstable if below 1.00): 1,19
Metacentric height 4,8 ft / 1,5 m
Roll period: 15,0 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0,82
Seaboat quality (Average = 1.00): 1,21

Hull form characteristics:
Hull has rise aft of midbreak, low quarterdeck
Block coefficient: 0,550
Length to Beam Ratio: 9,17 : 1
'Natural speed' for length: 26,87 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 30,00 degrees
Stern overhang: 29,53 ft / 9,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22,97 ft / 7,00 m
- Forecastle (20 %): 22,97 ft / 7,00 m
- Mid (50 %): 19,69 ft / 6,00 m (26,25 ft / 8,00 m aft of break)
- Quarterdeck (15 %): 19,69 ft / 6,00 m (26,25 ft / 8,00 m before break)
- Stern: 19,69 ft / 6,00 m
- Average freeboard: 23,13 ft / 7,05 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 113,4 %
- Above water (accommodation/working, high = better): 175,2 %
Waterplane Area: 39.664 Square feet or 3.685 Square metres
Displacement factor (Displacement / loading): 103 %
Structure weight / hull surface area: 152 lbs/sq ft or 740 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,96
- Longitudinal: 1,39
- Overall: 1,00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily