Again a Cruiser design competition.

Started by maddox, August 16, 2010, 07:24:20 AM

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damocles

Demarce V, Holland Enter ship type laid down 1920

Displacement:
   4,992 t light; 5,178 t standard; 6,035 t normal; 6,719 t full load

Dimensions: Length overall / water x beam x draught
   524.93 ft / 524.93 ft x 45.93 ft x 16.40 ft (normal load)
   160.00 m / 160.00 m x 14.00 m  x 5.00 m

Armament:
      8 - 5.51" / 140 mm guns (4x2 guns), 83.72lbs / 37.98kg shells, 1920 Model
     Breech loading guns in deck mounts with hoists
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      8 - 2.76" / 70.0 mm guns in single mounts, 10.47lbs / 4.75kg shells, 1920 Model
     Anti-aircraft guns in deck mounts
     on side, all amidships
      8 - 0.52" / 13.2 mm guns in single mounts, 0.07lbs / 0.03kg shells, 1920 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 754 lbs / 342 kg
   Shells per gun, main battery: 150
   8 - 24.0" / 609.6 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   1.00" / 26 mm   393.70 ft / 120.00 m   10.01 ft / 3.05 m
   Ends:   Unarmoured
     Main Belt covers 115 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   2.17" / 55 mm   2.17" / 55 mm      2.95" / 75 mm

   - Armour deck: 1.00" / 25 mm, Conning tower: 1.00" / 25 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 49,870 shp / 37,203 Kw = 30.00 kts
   Range 7,000nm at 16.00 kts
   Bunker at max displacement = 1,541 tons

Complement:
   342 - 445

Cost:
   £1.177 million / $4.709 million

Distribution of weights at normal displacement:
   Armament: 94 tons, 1.6 %
   Armour: 545 tons, 9.0 %
      - Belts: 160 tons, 2.7 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 71 tons, 1.2 %
      - Armour Deck: 307 tons, 5.1 %
      - Conning Tower: 7 tons, 0.1 %
   Machinery: 1,744 tons, 28.9 %
   Hull, fittings & equipment: 2,209 tons, 36.6 %
   Fuel, ammunition & stores: 1,042 tons, 17.3 %
   Miscellaneous weights: 400 tons, 6.6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     5,563 lbs / 2,523 Kg = 66.4 x 5.5 " / 140 mm shells or 1.0 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 1.9 ft / 0.6 m
   Roll period: 14.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 75 %
         - Recoil effect (Restricted arc if above 1.00): 0.52
   Seaboat quality  (Average = 1.00): 1.21

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.534
   Length to Beam Ratio: 11.43 : 1
   'Natural speed' for length: 22.91 kts
   Power going to wave formation at top speed: 55 %
   Trim (Max stability = 0, Max steadiness = 100): 62
   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:      25.20 ft / 7.68 m
      - Forecastle (20 %):   16.04 ft / 4.89 m
      - Mid (50 %):      16.04 ft / 4.89 m
      - Quarterdeck (15 %):   16.04 ft / 4.89 m
      - Stern:      16.04 ft / 4.89 m
      - Average freeboard:   16.78 ft / 5.11 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 113.2 %
      - Above water (accommodation/working, high = better): 103.9 %
   Waterplane Area: 16,577 Square feet or 1,540 Square metres
   Displacement factor (Displacement / loading): 116 %
   Structure weight / hull surface area: 78 lbs/sq ft or 381 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.97
      - Longitudinal: 1.27
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

French suppled or Dutch equivalent equipment.
100 tons FC
25 tons sound gear/sonar
25 tons ERADe/radar
25 tons Long Range Macaroni/radio
25 tons crane.
50 tons aircraft catapult
50 tons Torpedoes
50 tons Depth Charges
50 tons Crew Comfort


-----------------------------------------------------------
400 tons misc.

The ship is fitted with an inclined belt. The torpedoes are the best French types available. The guns are the standard French heavy caliber "contra-torpellieur" type.

An experimental seaplane catapult on the fantail is fitted.   

maddox

The designs entered give Minister Lebrun some food for tought.

damocles

#17
Demarce V, Hoilland Enter ship type laid down 1920

Displacement:
   5,003 t light; 5,190 t standard; 6,047 t normal; 6,733 t full load

Dimensions: Length overall / water x beam x draught
   524.93 ft / 524.93 ft x 45.93 ft x 16.40 ft (normal load)
   160.00 m / 160.00 m x 14.00 m  x 5.00 m

Armament:
     8 - 5.51" / 140 mm guns (4x2 guns), 83.72lbs / 37.98kg shells, 1920 Model
     Breech loading guns in deck mounts with hoists
     on centreline ends, evenly spread, 2 raised mounts - superfiring
     8 - 2.76" / 70.0 mm guns in single mounts, 10.47lbs / 4.75kg shells, 1920 Model
     Anti-aircraft guns in deck mounts
     on side, all amidships
     8 - 0.52" / 13.2 mm guns in single mounts, 0.07lbs / 0.03kg shells, 1920 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 754 lbs / 342 kg
   Shells per gun, main battery: 150
   8 - 24.0" / 609.6 mm above water torpedoes

Armour:
  - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   1.97" / 50 mm   393.70 ft / 120.00 m   9.84 ft / 3.00 m
   Ends:   Unarmoured
     Main Belt covers 115 % of normal length

  - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.97" / 50 mm   1.97" / 50 mm      2.76" / 70 mm

  - Armour deck: 0.98" / 25 mm, Conning tower: 1.00" / 26 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 49,957 shp / 37,268 Kw = 30.00 kts
   Range 7,000nm at 16.00 kts
   Bunker at max displacement = 1,543 tons

Complement:
   342 - 445

Cost:
   £1.179 million / $4.716 million

Distribution of weights at normal displacement:
   Armament: 94 tons, 1.6 %
   Armour: 683 tons, 11.3 %
      - Belts: 308 tons, 5.1 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 65 tons, 1.1 %
      - Armour Deck: 302 tons, 5.0 %
      - Conning Tower: 7 tons, 0.1 %
   Machinery: 1,747 tons, 28.9 %
   Hull, fittings & equipment: 2,205 tons, 36.5 %
   Fuel, ammunition & stores: 1,044 tons, 17.3 %
   Miscellaneous weights: 275 tons, 4.5 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     5,866 lbs / 2,661 Kg = 70.1 x 5.5 " / 140 mm shells or 1.0 torpedoes
   Stability (Unstable if below 1.00): 1.13
   Metacentric height 2.0 ft / 0.6 m
   Roll period: 13.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 75 %
         - Recoil effect (Restricted arc if above 1.00): 0.51
   Seaboat quality  (Average = 1.00): 1.22

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.535
   Length to Beam Ratio: 11.43 : 1
   'Natural speed' for length: 22.91 kts
   Power going to wave formation at top speed: 55 %
   Trim (Max stability = 0, Max steadiness = 100): 62
   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:      25.20 ft / 7.68 m
      - Forecastle (20 %):   16.04 ft / 4.89 m
      - Mid (50 %):      16.04 ft / 4.89 m
      - Quarterdeck (15 %):   16.04 ft / 4.89 m
      - Stern:      16.04 ft / 4.89 m
      - Average freeboard:   16.78 ft / 5.11 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 110.9 %
      - Above water (accommodation/working, high = better): 104.0 %
   Waterplane Area: 16,594 Square feet or 1,542 Square metres
   Displacement factor (Displacement / loading): 116 %
   Structure weight / hull surface area: 78 lbs/sq ft or 380 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.97
      - Longitudinal: 1.27
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

Dutch equipment.
100 tons FC
25 tons sound gear/sonar
25 tons ERADe/radar
25 tons Long Range Macaroni/radio
50 tons Torpedoes
25 tons Depth Charges
25 tons Crew Comfort
-----------------------------------------------------------
275 tons misc.
-----------------------------------------------------------
And the Dutch equivalent.....

Demarce V, Hoilland torpedokruizer laid down 1920

Displacement:
   4,995 t light; 5,178 t standard; 6,035 t normal; 6,719 t full load

Dimensions: Length overall / water x beam x draught
   524.93 ft / 524.93 ft x 45.93 ft x 16.40 ft (normal load)
   160.00 m / 160.00 m x 14.00 m  x 5.00 m

Armament:
     10 - 4.92" / 125 mm guns (5x2 guns), 59.59lbs / 27.03kg shells, 1920 Model
     Quick firing guns in deck mounts with hoists
     on centreline ends, majority aft, 2 raised mounts - superfiring
     8 - 2.95" / 75.0 mm guns (4x2 guns), 12.87lbs / 5.84kg shells, 1920 Model
     Anti-aircraft guns in deck mounts with hoists
     on side, all amidships
     16 - 0.98" / 25.0 mm guns (4x4 guns), 0.48lbs / 0.22kg shells, 1920 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 707 lbs / 320 kg
   Shells per gun, main battery: 150
   8 - 24.0" / 610 mm above water torpedoes

Armour:
  - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   1.97" / 50 mm   393.70 ft / 120.00 m   9.84 ft / 3.00 m
   Ends:   Unarmoured
     Main Belt covers 115 % of normal length

  - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.97" / 50 mm   1.97" / 50 mm      2.76" / 70 mm
   2nd:   0.39" / 10 mm   0.39" / 10 mm      0.39" / 10 mm

  - Armour deck: 0.98" / 25 mm, Conning tower: 1.00" / 26 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 49,870 shp / 37,203 Kw = 30.00 kts
   Range 7,000nm at 16.00 kts
   Bunker at max displacement = 1,541 tons

Complement:
   342 - 445

Cost:
   £1.166 million / $4.662 million

Distribution of weights at normal displacement:
   Armament: 88 tons, 1.5 %
   Armour: 694 tons, 11.5 %
      - Belts: 308 tons, 5.1 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 77 tons, 1.3 %
      - Armour Deck: 302 tons, 5.0 %
      - Conning Tower: 7 tons, 0.1 %
   Machinery: 1,744 tons, 28.9 %
   Hull, fittings & equipment: 2,194 tons, 36.4 %
   Fuel, ammunition & stores: 1,039 tons, 17.2 %
   Miscellaneous weights: 275 tons, 4.6 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     5,952 lbs / 2,700 Kg = 99.9 x 4.9 " / 125 mm shells or 1.0 torpedoes
   Stability (Unstable if below 1.00): 1.13
   Metacentric height 2.0 ft / 0.6 m
   Roll period: 13.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 75 %
         - Recoil effect (Restricted arc if above 1.00): 0.48
   Seaboat quality  (Average = 1.00): 1.22

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.534
   Length to Beam Ratio: 11.43 : 1
   'Natural speed' for length: 22.91 kts
   Power going to wave formation at top speed: 55 %
   Trim (Max stability = 0, Max steadiness = 100): 62
   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:      25.20 ft / 7.68 m
      - Forecastle (20 %):   16.04 ft / 4.89 m
      - Mid (50 %):      16.04 ft / 4.89 m
      - Quarterdeck (15 %):   16.04 ft / 4.89 m
      - Stern:      16.04 ft / 4.89 m
      - Average freeboard:   16.78 ft / 5.11 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 110.3 %
      - Above water (accommodation/working, high = better): 103.8 %
   Waterplane Area: 16,577 Square feet or 1,540 Square metres
   Displacement factor (Displacement / loading): 117 %
   Structure weight / hull surface area: 78 lbs/sq ft or 379 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.98
      - Longitudinal: 1.27
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

Dutch equivalent equipment.
100 tons FC
  25 tons sound gear/sonar
  25 tons ERADe/radar
  25 tons Long Range Macaroni/radio
  50 tons Torpedoes
  25 tons Depth Charges
  25 tons surplus
275 tons misc.
Armor belt is inclined. Large AAA guns are protected by weather-houses   
-----------------------------------------------------------
275 tons misc.

The Dutch design is based on Dutch armament.  

maddox

#18
I unleashed some Springsharp Fu, and combined the features I liked best, inside the parameters I gave for the new French escort cruisers.


QuoteCharlotte MK I, French Escort Cruiser laid down 1920

Displacement:
   5.000 t light; 5.189 t standard; 5.918 t normal; 6.501 t full load

Dimensions: Length overall / water x beam x draught
   531,50 ft / 528,22 ft x 45,93 ft x 16,40 ft (normal load)
   162,00 m / 161,00 m x 14,00 m  x 5,00 m

Armament:
      10 - 5,00" / 127 mm guns (5x2 guns), 55,12lbs / 25,00kg shells, 1918 Model
     Quick firing guns in deck mounts with hoists
     on centreline, evenly spread, 2 raised mounts
      8 - 1,46" / 37,0 mm guns in single mounts, 1,55lbs / 0,70kg shells, 1916 Model
     Anti-aircraft guns in deck mounts
     on side, all amidships, all raised mounts - superfiring
      4 - 0,98" / 25,0 mm guns (2x2 guns), 0,48lbs / 0,22kg shells, 1916 Model
     Machine guns in deck mounts
     on centreline ends, evenly spread, all raised mounts
   Weight of broadside 566 lbs / 257 kg
   Shells per gun, main battery: 220
   8 - 24,0" / 609,6 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   2,50" / 64 mm   372,92 ft / 113,67 m   13,50 ft / 4,11 m
   Ends:   Unarmoured
     Main Belt covers 109% of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   2,00" / 51 mm   1,00" / 25 mm      2,00" / 51 mm
   2nd:   0,50" / 13 mm   0,50" / 13 mm            -
   3rd:   0,50" / 13 mm   0,50" / 13 mm            -

   - Armour deck: 1,00" / 25 mm, Conning tower: 2,50" / 64 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 48.825 shp / 36.423 Kw = 30,00 kts
   Range 6.000nm at 16,00 kts
   Bunker at max displacement = 1.312 tons

Complement:
   336 - 438

Cost:
   £1,137 million / $4,549 million

Distribution of weights at normal displacement:
   Armament: 80 tons, 1,4%
   Armour: 887 tons, 15,0%
      - Belts: 512 tons, 8,7%
      - Torpedo bulkhead: 0 tons, 0,0%
      - Armament: 53 tons, 0,9%
      - Armour Deck: 305 tons, 5,1%
      - Conning Tower: 18 tons, 0,3%
   Machinery: 1.707 tons, 28,8%
   Hull, fittings & equipment: 2.106 tons, 35,6%
   Fuel, ammunition & stores: 918 tons, 15,5%
   Miscellaneous weights: 220 tons, 3,7%

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     6.085 lbs / 2.760 Kg = 97,4 x 5,0 " / 127 mm shells or 1,0 torpedoes
   Stability (Unstable if below 1.00): 1,17
   Metacentric height 2,1 ft / 0,6 m
   Roll period: 13,4 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0,35
   Seaboat quality  (Average = 1.00): 1,21

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,520
   Length to Beam Ratio: 11,50 : 1
   'Natural speed' for length: 22,98 kts
   Power going to wave formation at top speed: 54 %
   Trim (Max stability = 0, Max steadiness = 100): 59
   Bow angle (Positive = bow angles forward): -5,00 degrees
   Stern overhang: 3,28 ft / 1,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      24,93 ft / 7,60 m
      - Forecastle (18%):   15,75 ft / 4,80 m
      - Mid (50%):      15,75 ft / 4,80 m
      - Quarterdeck (11%):   15,75 ft / 4,80 m
      - Stern:      15,75 ft / 4,80 m
      - Average freeboard:   16,41 ft / 5,00 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 108,6%
      - Above water (accommodation/working, high = better): 103,4%
   Waterplane Area: 16.471 Square feet or 1.530 Square metres
   Displacement factor (Displacement / loading): 115%
   Structure weight / hull surface area: 76 lbs/sq ft or 369 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,98
      - Longitudinal: 1,18
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

Dutch designed hull,with French accents. 
Italian 5" main guns in French 140mm twin gun mount armor
Belt angled at 12°, "real height" is 13.2'
100 ton FC
25 ton ERADe
24 ton torpedo's
40 ton ASW (90 depth charges. 3 racks of 20 and 30 assigned for 2 experimental trowers.10 tons Hydrophones -combined with the ERADe equipment )
25 ton crew comfort
6 ton damage control