1917 cruisers for Peru

Started by Jefgte, October 17, 2008, 09:08:30 AM

Previous topic - Next topic

Jefgte

Testing a 1915 - 3000t scout cruiser

Scout Cruiser, Peru 3000T-750tx4 laid down 1915 (Engine 1912)

Displacement:
   3 000 t light; 3 122 t standard; 3 574 t normal; 3 935 t full load

Dimensions: Length overall / water x beam x draught
   479.00 ft / 479.00 ft x 50.07 ft x 12.42 ft (normal load)
   146.00 m / 146.00 m x 15.26 m  x 3.79 m

Armament:
      2 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1915 Model
     Breech loading guns in deck mounts with hoists
     on centreline, evenly spread
      4 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1915 Model
     Breech loading guns in deck mounts with hoists
     on side, evenly spread
      2 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1915 Model
     Quick firing guns in deck mounts
     on centreline, all amidships
      4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1915 Model
     Machine guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 675 lbs / 306 kg
   Shells per gun, main battery: 120
   6 - 18.0" / 457.2 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.79" / 20 mm         -               -
   2nd:   0.79" / 20 mm         -               -
   3rd:   0.79" / 20 mm         -               -
   4th:   0.50" / 13 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 3 shafts, 26 600 shp / 19 843 Kw = 27.72 kts
   Range 7 000nm at 12.00 kts
   Bunker at max displacement = 814 tons

Complement:
   230 - 300

Cost:
   £0.472 million / $1.887 million

Distribution of weights at normal displacement:
   Armament: 84 tons, 2.4 %
   Armour: 19 tons, 0.5 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 19 tons, 0.5 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 1 061 tons, 29.7 %
   Hull, fittings & equipment: 1 685 tons, 47.2 %
   Fuel, ammunition & stores: 574 tons, 16.1 %
   Miscellaneous weights: 150 tons, 4.2 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     3 798 lbs / 1 723 Kg = 35.2 x 6.0 " / 152 mm shells or 0.9 torpedoes
   Stability (Unstable if below 1.00): 1.29
   Metacentric height 2.8 ft / 0.8 m
   Roll period: 12.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0.27
   Seaboat quality  (Average = 1.00): 1.20

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.420
   Length to Beam Ratio: 9.57 : 1
   'Natural speed' for length: 21.89 kts
   Power going to wave formation at top speed: 50 %
   Trim (Max stability = 0, Max steadiness = 100): 60
   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:      21.00 ft / 6.40 m
      - Forecastle (19 %):   16.40 ft / 5.00 m
      - Mid (45 %):      13.12 ft / 4.00 m
      - Quarterdeck (18 %):   13.12 ft / 4.00 m
      - Stern:      13.12 ft / 4.00 m
      - Average freeboard:   14.52 ft / 4.43 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 118.9 %
      - Above water (accommodation/working, high = better): 149.2 %
   Waterplane Area: 14 951 Square feet or 1 389 Square metres
   Displacement factor (Displacement / loading): 120 %
   Structure weight / hull surface area: 77 lbs/sq ft or 376 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.98
      - Longitudinal: 1.19
      - 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
   Good seaboat, rides out heavy weather easily

"You French are fighting for money, while we English are fighting for honor!"
"Everyone is fighting for what they miss. "
Surcouf

The Rock Doctor

If you wait until the next engine tech is available, what can you get?

P3D

Quote from: The Rock Doctor on November 18, 2008, 11:47:07 AM
If you wait until the next engine tech is available, what can you get?
I got about 2-300t on my designs.
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas