If you remember Italy is currently building this trade protection cruiser for EAS;
After the change in our gentleman's rules, I'd like to change the design to this ship which has the same light displacement.
The change is so that the composite hull strength is 1.00 again. I'd prefer to have the extra strength rather than it being permantly weak. The triple turrets vanished after I realised that Italy has no design for a triple 152mm turret. The 5x1 enclosed mounts save a bit of weight as well.
Anyone have any problems?
Old ship laid down 1928
Displacement:
5,699 t light; 5,960 t standard; 7,101 t normal; 8,015 t full load
Dimensions: Length overall / water x beam x draught
505.56 ft / 492.13 ft x 55.77 ft x 19.69 ft (normal load)
154.09 m / 150.00 m x 17.00 m x 6.00 m
Armament:
6 - 5.98" / 152 mm guns (2x3 guns), 110.23lbs / 50.00kg shells, 1928 Model
Breech loading guns in turrets (on barbettes)
on side, all amidships
4 - 3.94" / 100 mm guns (2x2 guns), 33.07lbs / 15.00kg shells, 1928 Model
Dual purpose guns in deck mounts with hoists
on centreline, all forward, 1 raised mount - superfiring
4 - 3.94" / 100 mm guns (2x2 guns), 33.07lbs / 15.00kg shells, 1928 Model
Dual purpose guns in deck mounts with hoists
on centreline, all aft
12 - 1.85" / 47.0 mm guns (4x3 guns), 3.86lbs / 1.75kg shells, 1928 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 972 lbs / 441 kg
Shells per gun, main battery: 200
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.94" / 100 mm 383.86 ft / 117.00 m 9.19 ft / 2.80 m
Ends: Unarmoured
Main Belt covers 120 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 5.31" / 135 mm 2.76" / 70 mm 3.94" / 100 mm
2nd: 0.79" / 20 mm 0.79" / 20 mm -
3rd: 0.39" / 10 mm - -
- Armour deck: 1.38" / 35 mm, Conning tower: 2.76" / 70 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 71,600 shp / 53,414 Kw = 31.75 kts
Range 18,000nm at 12.00 kts
Bunker at max displacement = 2,055 tons
Complement:
386 - 502
Cost:
£2.324 million / $9.296 million
Distribution of weights at normal displacement:
Armament: 116 tons, 1.6 %
Armour: 1,184 tons, 16.7 %
- Belts: 565 tons, 8.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 147 tons, 2.1 %
- Armour Deck: 450 tons, 6.3 %
- Conning Tower: 22 tons, 0.3 %
Machinery: 2,229 tons, 31.4 %
Hull, fittings & equipment: 1,871 tons, 26.3 %
Fuel, ammunition & stores: 1,402 tons, 19.7 %
Miscellaneous weights: 300 tons, 4.2 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
3,910 lbs / 1,774 Kg = 36.5 x 6.0 " / 152 mm shells or 1.0 torpedoes
Stability (Unstable if below 1.00): 1.33
Metacentric height 3.5 ft / 1.1 m
Roll period: 12.6 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.16
Seaboat quality (Average = 1.00): 1.01
Hull form characteristics:
Hull has raised forecastle, raised quarterdeck
Block coefficient: 0.460
Length to Beam Ratio: 8.82 : 1
'Natural speed' for length: 22.18 kts
Power going to wave formation at top speed: 61 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.89 ft / 8.50 m
- Forecastle (30 %): 21.33 ft / 6.50 m (11.48 ft / 3.50 m aft of break)
- Mid (50 %): 11.48 ft / 3.50 m
- Quarterdeck (30 %): 21.33 ft / 6.50 m (11.48 ft / 3.50 m before break)
- Stern: 21.33 ft / 6.50 m
- Average freeboard: 18.18 ft / 5.54 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 119.7 %
- Above water (accommodation/working, high = better): 100.0 %
Waterplane Area: 17,654 Square feet or 1,640 Square metres
Displacement factor (Displacement / loading): 103 %
Structure weight / hull surface area: 65 lbs/sq ft or 316 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.71
- Longitudinal: 1.24
- 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 adequate
New ship laid down 1928
Displacement:
5,699 t light; 5,922 t standard; 7,101 t normal; 8,045 t full load
Dimensions: Length overall / water x beam x draught
504.36 ft / 492.13 ft x 55.77 ft x 19.69 ft (normal load)
153.73 m / 150.00 m x 17.00 m x 6.00 m
Armament:
5 - 5.98" / 152 mm guns in single mounts, 110.23lbs / 50.00kg shells, 1928 Model
Breech loading guns in deck mounts with hoists
on centreline, evenly spread, 2 raised mounts
4 - 3.94" / 100 mm guns (2x2 guns), 30.42lbs / 13.80kg shells, 1928 Model
Anti-aircraft guns in deck mounts
on side, all forward
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.83lbs / 0.83kg shells, 1928 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 687 lbs / 312 kg
Shells per gun, main battery: 200
6 - 21.0" / 533 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2.76" / 70 mm 364.17 ft / 111.00 m 8.20 ft / 2.50 m
Ends: Unarmoured
Main Belt covers 114 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.97" / 50 mm 0.98" / 25 mm -
2nd: 0.79" / 20 mm - -
- Armour deck: 0.98" / 25 mm, Conning tower: 2.76" / 70 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 71,600 shp / 53,414 Kw = 31.75 kts
Range 18,610nm at 12.00 kts
Bunker at max displacement = 2,123 tons
Complement:
386 - 502
Cost:
£2.222 million / $8.887 million
Distribution of weights at normal displacement:
Armament: 84 tons, 1.2 %
Armour: 716 tons, 10.1 %
- Belts: 338 tons, 4.8 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 34 tons, 0.5 %
- Armour Deck: 321 tons, 4.5 %
- Conning Tower: 22 tons, 0.3 %
Machinery: 2,229 tons, 31.4 %
Hull, fittings & equipment: 2,520 tons, 35.5 %
Fuel, ammunition & stores: 1,402 tons, 19.7 %
Miscellaneous weights: 150 tons, 2.1 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
6,860 lbs / 3,111 Kg = 64.0 x 6.0 " / 152 mm shells or 1.1 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 2.9 ft / 0.9 m
Roll period: 13.7 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.23
Seaboat quality (Average = 1.00): 1.02
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.460
Length to Beam Ratio: 8.82 : 1
'Natural speed' for length: 22.18 kts
Power going to wave formation at top speed: 61 %
Trim (Max stability = 0, Max steadiness = 100): 70
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 24.61 ft / 7.50 m
- Forecastle (20 %): 21.33 ft / 6.50 m
- Mid (60 %): 21.33 ft / 6.50 m (13.12 ft / 4.00 m aft of break)
- Quarterdeck (15 %): 13.12 ft / 4.00 m
- Stern: 14.76 ft / 4.50 m
- Average freeboard: 18.43 ft / 5.62 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 113.8 %
- Above water (accommodation/working, high = better): 134.5 %
Waterplane Area: 17,654 Square feet or 1,640 Square metres
Displacement factor (Displacement / loading): 118 %
Structure weight / hull surface area: 87 lbs/sq ft or 425 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.74
- Overall: 1.00
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
Friday, May 24th 2024, 4:24pm
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