I haven been meddling with Springsharp again. This is a design for a Cruiser. Any helpful suggestions ?
Middle kingdom cruiser laid down 1907 (Engine 1909)
Displacement:
7.184 t light; 7.424 t standard; 8.168 t normal; 8.764 t full load
Dimensions: Length overall / water x beam x draught
492,13 ft / 492,13 ft x 68,90 ft x 16,40 ft (normal load)
150,00 m / 150,00 m x 21,00 m x 5,00 m
Armament:
2 - 9,84" / 250 mm guns in single mounts, 476,75lbs / 216,25kg shells, 1907 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
6 - 4,13" / 105 mm guns in single mounts, 35,32lbs / 16,02kg shells, 1907 Model
Quick firing guns in casemate mounts
on side, all amidships
8 - 2,95" / 75,0 mm guns in single mounts, 12,87lbs / 5,84kg shells, 1907 Model
Quick firing guns in deck mounts
on side, evenly spread
20 - 0,98" / 25,0 mm guns in single mounts, 0,48lbs / 0,22kg shells, 1907 Model
Machine guns in deck mounts
on side, evenly spread, 10 raised mounts
Weight of broadside 1.278 lbs / 580 kg
Shells per gun, main battery: 100
8 - 20,0" / 508 mm submerged torpedo tubes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 5,91" / 150 mm 319,88 ft / 97,50 m 11,48 ft / 3,50 m
Ends: 1,97" / 50 mm 172,21 ft / 52,49 m 9,97 ft / 3,04 m
Upper: 1,97" / 50 mm 319,88 ft / 97,50 m 8,01 ft / 2,44 m
Main Belt covers 100% of normal length
- Torpedo Bulkhead:
1,18" / 30 mm 319,88 ft / 97,50 m 15,06 ft / 4,59 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 9,84" / 250 mm 7,87" / 200 mm 9,84" / 250 mm
2nd: 3,15" / 80 mm - -
3rd: 1,57" / 40 mm - -
4th: 0,79" / 20 mm - -
- Armour deck: 1,97" / 50 mm
Machinery:
Coal fired boilers, steam turbines,
Direct drive, 4 shafts, 19.303 shp / 14.400 Kw = 22,00 kts
Range 8.000nm at 9,00 kts
Bunker at max displacement = 1.341 tons (100% coal)
Complement:
429 - 558
Cost:
£0,521 million / $2,083 million
Distribution of weights at normal displacement:
Armament: 160 tons, 2,0%
Armour: 2.754 tons, 33,7%
- Belts: 1.274 tons, 15,6%
- Torpedo bulkhead: 211 tons, 2,6%
- Armament: 436 tons, 5,3%
- Armour Deck: 833 tons, 10,2%
- Conning Tower: 0 tons, 0,0%
Machinery: 965 tons, 11,8%
Hull, fittings & equipment: 3.205 tons, 39,2%
Fuel, ammunition & stores: 984 tons, 12,1%
Miscellaneous weights: 100 tons, 1,2%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
18.519 lbs / 8.400 Kg = 38,8 x 9,8 " / 250 mm shells or 3,8 torpedoes
Stability (Unstable if below 1.00): 1,29
Metacentric height 4,5 ft / 1,4 m
Roll period: 13,6 seconds
Steadiness - As gun platform (Average = 50 %): 88 %
- Recoil effect (Restricted arc if above 1.00): 0,21
Seaboat quality (Average = 1.00): 1,75
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,514
Length to Beam Ratio: 7,14 : 1
'Natural speed' for length: 22,18 kts
Power going to wave formation at top speed: 45 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): -5,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26,25 ft / 8,00 m
- Forecastle (20%): 26,25 ft / 8,00 m
- Mid (50%): 15,52 ft / 4,73 m
- Quarterdeck (15%): 15,52 ft / 4,73 m
- Stern: 15,52 ft / 4,73 m
- Average freeboard: 19,27 ft / 5,87 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 86,3%
- Above water (accommodation/working, high = better): 182,8%
Waterplane Area: 22.883 Square feet or 2.126 Square metres
Displacement factor (Displacement / loading): 135%
Structure weight / hull surface area: 98 lbs/sq ft or 480 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,96
- Longitudinal: 1,52
- Overall: 1,01
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
Miscellanous weight: towing unit and marconi unit
While not a bad ship as such, i feel she i neither fish nor fowl. She is too slow to avoid armoured cruisers, and lacks the armament to really be effective against light cruisers.
Also i have some doubts about the use of a torpedo bulkhead, on such a small ship it does not really bring much benefit, as ship is too narrow to give much depth to the system.
Just took Korpens remarks and changed a bit. Lighter armor, lighter but more main guns, but tweaked on the range and speed.
Main disadvantage, the 190mm guns won't scare a dedicated BB commander.
QuoteH Q Yongzi, Middle kingdom cruiser laid down 1907 (Engine 1909)
Displacement:
6.834 t light; 7.043 t standard; 7.612 t normal; 8.067 t full load
Dimensions: Length overall / water x beam x draught
492,13 ft / 492,13 ft x 68,90 ft x 16,40 ft (normal load)
150,00 m / 150,00 m x 21,00 m x 5,00 m
Armament:
4 - 7,48" / 190 mm guns (2x2 guns), 209,28lbs / 94,93kg shells, 1907 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
10 - 4,13" / 105 mm guns in single mounts, 35,32lbs / 16,02kg shells, 1907 Model
Quick firing guns in casemate mounts
on side, all amidships
12 - 0,98" / 25,0 mm guns in single mounts, 0,48lbs / 0,22kg shells, 1907 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 1.196 lbs / 543 kg
Shells per gun, main battery: 80
8 - 20,0" / 508 mm submerged torpedo tubes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 5,91" / 150 mm 295,28 ft / 90,00 m 11,48 ft / 3,50 m
Ends: 1,97" / 50 mm 196,82 ft / 59,99 m 9,97 ft / 3,04 m
Upper: 1,97" / 50 mm 319,88 ft / 97,50 m 8,01 ft / 2,44 m
Main Belt covers 92% of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 7,09" / 180 mm 6,69" / 170 mm 7,09" / 180 mm
2nd: 2,36" / 60 mm - -
3rd: 0,79" / 20 mm - -
- Armour deck: 1,97" / 50 mm
Machinery:
Coal fired boilers, steam turbines,
Direct drive, 4 shafts, 21.571 shp / 16.092 Kw = 23,00 kts
Range 8.000nm at 8,00 kts
Bunker at max displacement = 1.024 tons (100% coal)
Complement:
406 - 529
Cost:
£0,516 million / $2,063 million
Distribution of weights at normal displacement:
Armament: 150 tons, 2,0%
Armour: 2.441 tons, 32,1%
- Belts: 1.233 tons, 16,2%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 401 tons, 5,3%
- Armour Deck: 807 tons, 10,6%
- Conning Tower: 0 tons, 0,0%
Machinery: 1.079 tons, 14,2%
Hull, fittings & equipment: 3.065 tons, 40,3%
Fuel, ammunition & stores: 779 tons, 10,2%
Miscellaneous weights: 100 tons, 1,3%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
15.403 lbs / 6.986 Kg = 73,6 x 7,5 " / 190 mm shells or 2,5 torpedoes
Stability (Unstable if below 1.00): 1,28
Metacentric height 4,5 ft / 1,4 m
Roll period: 13,7 seconds
Steadiness - As gun platform (Average = 50 %): 84 %
- Recoil effect (Restricted arc if above 1.00): 0,19
Seaboat quality (Average = 1.00): 1,68
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,479
Length to Beam Ratio: 7,14 : 1
'Natural speed' for length: 22,18 kts
Power going to wave formation at top speed: 46 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): -5,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26,25 ft / 8,00 m
- Forecastle (20%): 26,25 ft / 8,00 m
- Mid (50%): 15,52 ft / 4,73 m
- Quarterdeck (15%): 15,52 ft / 4,73 m
- Stern: 15,52 ft / 4,73 m
- Average freeboard: 19,27 ft / 5,87 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 69,5%
- Above water (accommodation/working, high = better): 187,2%
Waterplane Area: 22.169 Square feet or 2.060 Square metres
Displacement factor (Displacement / loading): 129%
Structure weight / hull surface area: 97 lbs/sq ft or 471 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,95
- Longitudinal: 1,58
- Overall: 1,00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
Miscellanous weight: towing unit and marconi unit
The 8 kts cruising speed is the same as for the torpedo boats. And for 95% of the merchants of this age.
Well i also played around with a design, it is the same size as the first, but better armoured and much with a much heavier broadside, same speed and much worse seaboat (but far from bad) however.
QuoteExport design I, Middle kingdom Cruiser laid down 1907 (Engine 1909)
Displacement:
7 200 t light; 7 612 t standard; 9 000 t normal; 10 110 t full load
Dimensions: Length overall / water x beam x draught
393,70 ft / 393,70 ft x 59,06 ft x 22,97 ft (normal load)
120,00 m / 120,00 m x 18,00 m x 7,00 m
Armament:
4 - 9,84" / 250 mm guns (2x2 guns), 476,75lbs / 216,25kg shells, 1907 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
8 - 5,91" / 150 mm guns in single mounts, 99,21lbs / 45,00kg shells, 1907 Model
Breech loading guns in deck mounts with hoists
on side ends, evenly spread, 4 raised mounts - superfiring
10 - 5,91" / 150 mm guns in single mounts, 99,21lbs / 45,00kg shells, 1907 Model
Breech loading guns in casemate mounts
on side, evenly spread
4 guns in hull casemates - Limited use in all but light seas
7 - 3,46" / 88,0 mm guns (6 mounts), 19,84lbs / 9,00kg shells, 1907 Model
Quick firing guns in deck mounts
on side, evenly spread, 6 raised mounts
Weight of broadside 3 832 lbs / 1 738 kg
Shells per gun, main battery: 100
4 - 19,7" / 500 mm above water torpedoes, 4 - 19,7" / 500 mm submerged torpedo tubes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 7,28" / 185 mm 229,66 ft / 70,00 m 11,48 ft / 3,50 m
Ends: 2,95" / 75 mm 164,04 ft / 50,00 m 8,20 ft / 2,50 m
Upper: 4,33" / 110 mm 262,47 ft / 80,00 m 8,20 ft / 2,50 m
Main Belt covers 90 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 8,27" / 210 mm 4,33" / 110 mm 6,30" / 160 mm
2nd: 1,97" / 50 mm - 0,98" / 25 mm
3rd: 4,33" / 110 mm - -
5th: 0,98" / 25 mm - -
- Armour deck: 1,97" / 50 mm, Conning tower: 5,91" / 150 mm
Machinery:
Coal and oil fired boilers, steam turbines,
Direct drive, 4 shafts, 22 594 shp / 16 855 Kw = 22,00 kts
Range 8 359nm at 12,00 kts
Bunker at max displacement = 2 498 tons (90% coal)
Complement:
461 - 600
Cost:
£0,819 million / $3,275 million
Distribution of weights at normal displacement:
Armament: 488 tons, 5,4 %
Armour: 2 656 tons, 29,5 %
- Belts: 1 408 tons, 15,6 %
- Torpedo bulkhead: 0 tons, 0,0 %
- Armament: 580 tons, 6,4 %
- Armour Deck: 613 tons, 6,8 %
- Conning Tower: 55 tons, 0,6 %
Machinery: 1 119 tons, 12,4 %
Hull, fittings & equipment: 2 838 tons, 31,5 %
Fuel, ammunition & stores: 1 800 tons, 20,0 %
Miscellaneous weights: 100 tons, 1,1 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
9 718 lbs / 4 408 Kg = 20,4 x 9,8 " / 250 mm shells or 1,6 torpedoes
Stability (Unstable if below 1.00): 1,14
Metacentric height 2,9 ft / 0,9 m
Roll period: 14,6 seconds
Steadiness - As gun platform (Average = 50 %): 54 %
- Recoil effect (Restricted arc if above 1.00): 0,66
Seaboat quality (Average = 1.00): 1,08
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0,590
Length to Beam Ratio: 6,67 : 1
'Natural speed' for length: 19,84 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 0,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 19,69 ft / 6,00 m
- Forecastle (15 %): 19,69 ft / 6,00 m
- Mid (45 %): 19,69 ft / 6,00 m (11,48 ft / 3,50 m aft of break)
- Quarterdeck (15 %): 11,48 ft / 3,50 m
- Stern: 11,48 ft / 3,50 m
- Average freeboard: 15,17 ft / 4,63 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 88,7 %
- Above water (accommodation/working, high = better): 93,5 %
Waterplane Area: 16 845 Square feet or 1 565 Square metres
Displacement factor (Displacement / loading): 101 %
Structure weight / hull surface area: 110 lbs/sq ft or 536 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,92
- Longitudinal: 2,09
- Overall: 1,00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is adequate
Ahoj!
It is not the purpose of 7000 cruisers to strike terror in the hearts of captains of 15000 ton battleships :)
I prefer the design by Maddox -2x2 7,5", but with a dozen 6 inchers.
Something like this:
http://www.worldwar1.co.uk/armoured-cruiser/prinz-adalbert-line.gif
Borys
I like Maddox's version but with the first one's armament.