Peru 1915-1919 program

[Guinness]

I feel like I'm taking a lot of time to criticize your designs lately, which isn't my intent, but bear with me...

The mix of 120mm and 3 inch guns seems odd to me. Wouldn't you be better off without those 3 inchers? Is the concern the RoF of the 120mm, or is there another intended use for the 3 inch guns? Maybe they are supposed to be AA guns?

[Jefgte]

The mix of 120mm and 3 inch guns seems odd to me. Wouldn't you be better off without those 3 inchers? Is the concern the RoF of the 120mm, or is there another intended use for the 3 inch guns? Maybe they are supposed to be AA guns?

120mm are for long range battle
& 3" QF for short range with high RoF, they are also futur AA guns place  :D
--------------------
12.7 are on the wings of the bridge, they are directly for the security of the ship in a harbor or any way, (mutiny also)... They could be use very quickly (a few seconds) by the officers.

All Armada ships use 12.7 on the bridge(s) wings or very near.


;)

[Korpen]

An other fleet DD - 1000t study
I rework the hull of the Arica class & always good seaboat quality for the crew.
Putre-1916
Robore-1917


1000T, Peru DD laid down 1916 (Engine 1912)

Displacement:
   1 000 t light; 1 037 t standard; 1 201 t normal; 1 333 t full load

Armament:
      3 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.92kg shells, 1916 Model
     Breech loading guns in deck mounts
     on centreline ends, majority aft, 1 raised mount aft
      2 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1916 Model
     Quick firing guns in deck mounts
     on side, evenly spread
      2 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1916 Model
     Quick firing guns in deck mounts
     on side, evenly spread
   Weight of broadside 185 lbs / 84 kg
   Shells per gun, main battery: 120
   6 - 21.0" / 533.4 mm above water torpedoes

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 18 792 shp / 14 019 Kw = 28.94 kts
   Range 5 000nm at 12.00 kts
   Bunker at max displacement = 295 tons


   Miscellaneous weights: 75 tons, 6.2 %
                100 depth charges
             

I am going to much harsher then Guinness (call me killkenny), but my verdict on the design is: useless.
I think you are trying to make her a jack of all trades, but ending up with a ship that is not capable of undertaking any of the tasks.
By navalism standard just three guns will not cut it if she is to engage her equals in a gunner duel or screening function, four or five guns would be needed for that. She is also lacking the speed needed for a more aggressive use; to be able to effectively use her torpedoes offensively she needs at lest 3kts more speed. I grant that 75 depth charges most likely make her a good subchaser for the time; but so is a 300 ton trawlers with a single 75mm gun (all that is needed), and the DD show little advantage over a 300ton gunboat in the anti-submarine role (and I think that is the least important function given Peru's geography).

Generally I think you get far too much misc weight, 25ton less would most likely give you at least a knot more speed.

[Jefgte]

Stronger & faster
One more 120mm
& + 0.5 kts 

Always good seaboat  ;)

Putre-1916
Robore-1917

1000T, Peru DD laid down 1916 (Engine 1912)

Displacement:
   1 000 t light; 1 042 t standard; 1 207 t normal; 1 339 t full load

Dimensions: Length overall / water x beam x draught
   328.08 ft / 328.08 ft x 32.81 ft x 9.89 ft (normal load)
   100.00 m / 100.00 m x 10.00 m  x 3.01 m

Armament:
      2 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.92kg shells, 1916 Model
     Breech loading guns in deck mounts
     on centreline, evenly spread
      2 - 4.72" / 120 mm guns (1x2 guns), 52.72lbs / 23.92kg shells, 1916 Model
     Breech loading guns in deck mount
     on centreline amidships
      2 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1916 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
      2 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1916 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 238 lbs / 108 kg
   Shells per gun, main battery: 120
   6 - 21.0" / 533.4 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, 2 shafts, 20 000 shp / 14 920 Kw = 29.49 kts
   Range 5 000nm at 12.00 kts
   Bunker at max displacement = 297 tons

Complement:
   102 - 133

Cost:
   £0.228 million / $0.912 million

Distribution of weights at normal displacement:
   Armament: 30 tons, 2.5 %
   Armour: 10 tons, 0.8 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 10 tons, 0.8 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 567 tons, 47.0 %
   Hull, fittings & equipment: 343 tons, 28.5 %
   Fuel, ammunition & stores: 207 tons, 17.1 %
   Miscellaneous weights: 50 tons, 4.1 %
                75 depth charges
                ...
Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     397 lbs / 180 Kg = 7.5 x 4.7 " / 120 mm shells or 0.3 torpedoes
   Stability (Unstable if below 1.00): 1.47
   Metacentric height 1.8 ft / 0.6 m
   Roll period: 10.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0.21
   Seaboat quality  (Average = 1.00): 1.24

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.397
   Length to Beam Ratio: 10.00 : 1
   'Natural speed' for length: 18.11 kts
   Power going to wave formation at top speed: 62 %
   Trim (Max stability = 0, Max steadiness = 100): 58
   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:      17.39 ft / 5.30 m
      - Forecastle (18 %):   14.11 ft / 4.30 m
      - Mid (50 %):      12.14 ft / 3.70 m
      - Quarterdeck (17 %):   12.14 ft / 3.70 m
      - Stern:      11.81 ft / 3.60 m
      - Average freeboard:   13.02 ft / 3.97 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 174.8 %
      - Above water (accommodation/working, high = better): 96.0 %
   Waterplane Area: 6 615 Square feet or 615 Square metres
   Displacement factor (Displacement / loading): 64 %
   Structure weight / hull surface area: 29 lbs/sq ft or 141 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.44
      - Overall: 0.56
   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

[Carthaginian]

Good solution to the armament problem.
Nice little ships for 1000t.

[Guinness]

One issue I see is this: When I threatened to make a destroyer with a twin gun mount, someone asserted that multiple gun mounts on dd's required mount and hoist...

[Jefgte]

Little mistake, Guinness.
All 120mm are single mount.
I have correct them on SS

No changement

;)

[Jefgte]

Probably the final study

Putre - 1916
Robore - 1916
Pica - 1917
Camiri - 1917

1000T, Peru DD laid down 1916 (Engine 1912)

Displacement:
   1 000 t light; 1 042 t standard; 1 208 t normal; 1 341 t full load

Dimensions: Length overall / water x beam x draught
   341.21 ft / 341.21 ft x 31.02 ft x 10.11 ft (normal load)
   104.00 m / 104.00 m x 9.46 m  x 3.08 m

Armament:
      2 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.91kg shells, 1916 Model
     Breech loading guns in deck mounts
     on centreline, evenly spread
      2 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.91kg shells, 1916 Model
     Breech loading guns in deck mounts
     on centreline, all amidships
      2 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1916 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
      2 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1916 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 238 lbs / 108 kg
   Shells per gun, main battery: 120
   6 - 21.0" / 533.4 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, 2 shafts, 21 000 shp / 15 666 Kw = 30.09 kts
   Range 5 000nm at 12.00 kts
   Bunker at max displacement = 299 tons

Complement:
   102 - 133

Cost:
   £0.230 million / $0.921 million

Distribution of weights at normal displacement:
   Armament: 30 tons, 2.5 %
   Armour: 11 tons, 0.9 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 11 tons, 0.9 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 577 tons, 47.8 %
   Hull, fittings & equipment: 332 tons, 27.5 %
   Fuel, ammunition & stores: 208 tons, 17.2 %
   Miscellaneous weights: 50 tons, 4.1 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     360 lbs / 163 Kg = 6.8 x 4.7 " / 120 mm shells or 0.3 torpedoes
   Stability (Unstable if below 1.00): 1.46
   Metacentric height 1.7 ft / 0.5 m
   Roll period: 10.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0.24
   Seaboat quality  (Average = 1.00): 1.23

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.395
   Length to Beam Ratio: 11.00 : 1
   'Natural speed' for length: 18.47 kts
   Power going to wave formation at top speed: 60 %
   Trim (Max stability = 0, Max steadiness = 100): 58
   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:      17.06 ft / 5.20 m
      - Forecastle (18 %):   13.78 ft / 4.20 m
      - Mid (50 %):      11.48 ft / 3.50 m
      - Quarterdeck (17 %):   11.48 ft / 3.50 m
      - Stern:      10.83 ft / 3.30 m
      - Average freeboard:   12.44 ft / 3.79 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 177.3 %
      - Above water (accommodation/working, high = better): 89.1 %
   Waterplane Area: 6 498 Square feet or 604 Square metres
   Displacement factor (Displacement / loading): 61 %
   Structure weight / hull surface area: 28 lbs/sq ft or 136 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.26
      - Overall: 0.54
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

[The Rock Doctor]

I like them - except that I think you need ~250 rounds per main gun when they're of such size.

[Jefgte]

More speed...

1000T, Peru DD laid down 1916 (Engine 1912)

Putre - 1916
Robore - 1916
Pica - 1916
Lima - 1916

1000T, Peru DD laid down 1916 (Engine 1912)

Displacement:
   1 000 t light; 1 047 t standard; 1 216 t normal; 1 350 t full load

Dimensions: Length overall / water x beam x draught
   357.34 ft / 354.33 ft x 29.53 ft x 10.43 ft (normal load)
   108.92 m / 108.00 m x 9.00 m  x 3.18 m

Armament:
      2 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.91kg shells, 1916 Model
     Breech loading guns in deck mounts
     on centreline, evenly spread
      1 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.91kg shells, 1916 Model
     Breech loading gun in deck mount
     on centreline amidships
      2 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1916 Model
     Quick firing guns in deck mounts
     on side, all amidships, all raised mounts - superfiring
      2 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1916 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 185 lbs / 84 kg
   Shells per gun, main battery: 200
   6 - 21.0" / 533.4 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:   0.50" / 13 mm         -               -
   4th:   0.50" / 13 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 24 000 shp / 17 904 Kw = 31.29 kts
   Range 5 000nm at 12.00 kts
   Bunker at max displacement = 303 tons
   Trial speed = 33.5kts

Complement:
   102 - 133

Cost:
   £0.232 million / $0.927 million

Distribution of weights at normal displacement:
   Armament: 23 tons, 1.9 %
   Armour: 8 tons, 0.6 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 8 tons, 0.6 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 622 tons, 51.2 %
   Hull, fittings & equipment: 307 tons, 25.2 %
   Fuel, ammunition & stores: 216 tons, 17.7 %
   Miscellaneous weights: 40 tons, 3.3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     297 lbs / 135 Kg = 5.6 x 4.7 " / 120 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.42
   Metacentric height 1.5 ft / 0.5 m
   Roll period: 10.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 73 %
         - Recoil effect (Restricted arc if above 1.00): 0.20
   Seaboat quality  (Average = 1.00): 1.05

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.390
   Length to Beam Ratio: 12.00 : 1
   'Natural speed' for length: 18.82 kts
   Power going to wave formation at top speed: 60 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   Bow angle (Positive = bow angles forward): 10.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      17.06 ft / 5.20 m
      - Forecastle (18 %):   12.47 ft / 3.80 m
      - Mid (50 %):      10.50 ft / 3.20 m
      - Quarterdeck (17 %):   9.84 ft / 3.00 m
      - Stern:      9.19 ft / 2.80 m
      - Average freeboard:   11.22 ft / 3.42 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 183.9 %
      - Above water (accommodation/working, high = better): 78.3 %
   Waterplane Area: 6 407 Square feet or 595 Square metres
   Displacement factor (Displacement / loading): 57 %
   Structure weight / hull surface area: 27 lbs/sq ft or 130 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 0.92
      - Overall: 0.53
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped
   Ship has slow, easy roll, a good, steady gun platform

[Jefgte]

Testing an AC built in 1.5year for 1918

4000tx3 HY

12000T-3T2x275-AXY, Peru AC laid down 1918 (Engine 1916)

Displacement:
   12 000 t light; 12 592 t standard; 13 473 t normal; 14 178 t full load

Dimensions: Length overall / water x beam x draught
   649.61 ft / 649.61 ft x 72.18 ft x 22.35 ft (normal load)
   198.00 m / 198.00 m x 22.00 m  x 6.81 m

Armament:
      6 - 10.83" / 275 mm guns (3x2 guns), 634.55lbs / 287.83kg shells, 1918 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, majority aft, 1 raised mount aft - superfiring
      12 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.92kg shells, 1918 Model
     Breech loading guns in casemate mounts
     on side, evenly spread
      4 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1918 Model
     Quick firing guns in deck mounts
     on side, all amidships, all raised mounts - superfiring
      4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1918 Model
     Machine guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 4 494 lbs / 2 039 kg
   Shells per gun, main battery: 125
   12 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   5.51" / 140 mm   465.88 ft / 142.00 m   10.17 ft / 3.10 m
   Ends:   3.15" / 80 mm   144.36 ft / 44.00 m   10.17 ft / 3.10 m
     39.37 ft / 12.00 m Unarmoured ends
     Main Belt covers 110 % of normal length

   - Torpedo Bulkhead:
      1.57" / 40 mm   465.88 ft / 142.00 m   22.64 ft / 6.90 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   6.30" / 160 mm   3.15" / 80 mm      5.51" / 140 mm
   2nd:   1.57" / 40 mm         -               -
   3rd:   0.79" / 20 mm         -               -
   4th:   0.50" / 13 mm         -               -

   - Armour deck: 1.97" / 50 mm, Conning tower: 5.51" / 140 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 50 000 shp / 37 300 Kw = 27.00 kts
   Range 7 000nm at 12.00 kts
   Bunker at max displacement = 1 586 tons

Complement:
   624 - 812

Cost:
   £2.305 million / $9.222 million

Distribution of weights at normal displacement:
   Armament: 562 tons, 4.2 %
   Armour: 3 558 tons, 26.4 %
      - Belts: 1 247 tons, 9.3 %
      - Torpedo bulkhead: 615 tons, 4.6 %
      - Armament: 541 tons, 4.0 %
      - Armour Deck: 1 089 tons, 8.1 %
      - Conning Tower: 67 tons, 0.5 %
   Machinery: 1 863 tons, 13.8 %
   Hull, fittings & equipment: 5 697 tons, 42.3 %
   Fuel, ammunition & stores: 1 473 tons, 10.9 %
   Miscellaneous weights: 320 tons, 2.4 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     18 971 lbs / 8 605 Kg = 29.9 x 10.8 " / 275 mm shells or 3.3 torpedoes
   Stability (Unstable if below 1.00): 1.17
   Metacentric height 4.1 ft / 1.3 m
   Roll period: 15.0 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0.56
   Seaboat quality  (Average = 1.00): 1.29

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.450
   Length to Beam Ratio: 9.00 : 1
   'Natural speed' for length: 25.49 kts
   Power going to wave formation at top speed: 44 %
   Trim (Max stability = 0, Max steadiness = 100): 56
   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:      23.62 ft / 7.20 m
      - Forecastle (18 %):   19.69 ft / 6.00 m
      - Mid (66 %):      18.83 ft / 5.74 m (10.83 ft / 3.30 m aft of break)
      - Quarterdeck (18 %):   10.83 ft / 3.30 m
      - Stern:      10.83 ft / 3.30 m
      - Average freeboard:   16.75 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): 128.6 %
   Waterplane Area: 29 908 Square feet or 2 779 Square metres
   Displacement factor (Displacement / loading): 111 %
   Structure weight / hull surface area: 131 lbs/sq ft or 639 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.99
      - Longitudinal: 1.06
      - Overall: 1.00
   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
   Good seaboat, rides out heavy weather easily

[Jefgte]

Testing a 13.000t Escort Cruiser

13000T-4T2x275, Peru EC laid down 1918 (Engine 1916)

Displacement:
   13 000 t light; 13 702 t standard; 14 598 t normal; 15 315 t full load

Dimensions: Length overall / water x beam x draught
   555.23 ft / 551.18 ft x 78.74 ft x 23.54 ft (normal load)
   169.23 m / 168.00 m x 24.00 m  x 7.18 m

Armament:
      4 - 10.83" / 275 mm guns (2x2 guns), 634.55lbs / 287.83kg shells, 1918 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, all forward
      4 - 10.83" / 275 mm guns (2x2 guns), 634.55lbs / 287.83kg shells, 1918 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, all aft
      12 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.92kg shells, 1918 Model
     Breech loading guns in casemate mounts
     on side, evenly spread
      4 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1918 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
      4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1918 Model
     Machine guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 5 763 lbs / 2 614 kg
   Shells per gun, main battery: 120
   12 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   9.06" / 230 mm   360.89 ft / 110.00 m   11.15 ft / 3.40 m
   Ends:   3.15" / 80 mm   144.36 ft / 44.00 m   9.84 ft / 3.00 m
     45.93 ft / 14.00 m Unarmoured ends
     Main Belt covers 101 % of normal length

   - Torpedo Bulkhead:
      1.57" / 40 mm   360.89 ft / 110.00 m   23.36 ft / 7.12 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   9.06" / 230 mm   4.72" / 120 mm      7.87" / 200 mm
   2nd:   9.06" / 230 mm   4.72" / 120 mm      7.87" / 200 mm
   3rd:   0.79" / 20 mm         -               -
   4th:   0.79" / 20 mm         -               -
   5th:   0.50" / 13 mm         -               -

   - Armour deck: 2.95" / 75 mm, Conning tower: 9.06" / 230 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 38 000 shp / 28 348 Kw = 24.23 kts
   Range 7 000nm at 12.00 kts
   Bunker at max displacement = 1 613 tons

Complement:
   663 - 863

Cost:
   £2.517 million / $10.067 million

Distribution of weights at normal displacement:
   Armament: 720 tons, 4.9 %
   Armour: 4 873 tons, 33.4 %
      - Belts: 1 732 tons, 11.9 %
      - Torpedo bulkhead: 491 tons, 3.4 %
      - Armament: 954 tons, 6.5 %
      - Armour Deck: 1 580 tons, 10.8 %
      - Conning Tower: 117 tons, 0.8 %
   Machinery: 1 416 tons, 9.7 %
   Hull, fittings & equipment: 5 671 tons, 38.8 %
   Fuel, ammunition & stores: 1 598 tons, 10.9 %
   Miscellaneous weights: 320 tons, 2.2 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     19 717 lbs / 8 943 Kg = 31.1 x 10.8 " / 275 mm shells or 3.9 torpedoes
   Stability (Unstable if below 1.00): 1.13
   Metacentric height 4.4 ft / 1.3 m
   Roll period: 15.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 73 %
         - Recoil effect (Restricted arc if above 1.00): 0.45
   Seaboat quality  (Average = 1.00): 1.21

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.500
   Length to Beam Ratio: 7.00 : 1
   'Natural speed' for length: 23.48 kts
   Power going to wave formation at top speed: 48 %
   Trim (Max stability = 0, Max steadiness = 100): 60
   Bow angle (Positive = bow angles forward): 10.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      22.97 ft / 7.00 m
      - Forecastle (18 %):   17.39 ft / 5.30 m
      - Mid (50 %):      13.78 ft / 4.20 m
      - Quarterdeck (17 %):   13.78 ft / 4.20 m
      - Stern:      13.78 ft / 4.20 m
      - Average freeboard:   15.41 ft / 4.70 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 96.5 %
      - Above water (accommodation/working, high = better): 98.6 %
   Waterplane Area: 28 916 Square feet or 2 686 Square metres
   Displacement factor (Displacement / loading): 106 %
   Structure weight / hull surface area: 142 lbs/sq ft or 692 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.97
      - Longitudinal: 1.37
      - 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

[Jefgte]

Built for work in the Waskhar Squadron & engage enemy cruisers.
In the battleline, this cruiser can engage 2 cruisers with 2 differents operationnal center-
Front & Aft
2T2x275 for each one.
Symetric superstructures

The hull is limited to 170m
She use T2x275 from GC

La Sombra de Waskhar, Peru Escort Cruiser laid down 1918 (Engine 1916)

Displacement:
   12 200 t light; 12 900 t standard; 13 772 t normal; 14 470 t full load

Dimensions: Length overall / water x beam x draught
   557.69 ft / 554.46 ft x 72.18 ft x 21.66 ft (normal load)
   169.98 m / 169.00 m x 22.00 m  x 6.60 m

Armament:
      8 - 10.83" / 275 mm guns (4x2 guns), 661.39lbs / 300.00kg shells, 1918 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread
     Aft Main mounts separated by engine room
      8 - 5.98" / 152 mm guns in single mounts, 107.15lbs / 48.60kg shells, 1918 Model
     Breech loading guns in casemate mounts
     on side, evenly spread
      4 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1918 Model
     Quick firing guns in deck mounts
     on side, all amidships, all raised mounts - superfiring
      4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1918 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 6 203 lbs / 2 813 kg
   Shells per gun, main battery: 120
   8 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   9.06" / 230 mm   380.58 ft / 116.00 m   12.73 ft / 3.88 m
   Ends:   2.36" / 60 mm   144.36 ft / 44.00 m   8.01 ft / 2.44 m
     29.53 ft / 9.00 m Unarmoured ends
     Main Belt covers 106 % of normal length

   - Torpedo Bulkhead:
      1.57" / 40 mm   380.58 ft / 116.00 m   21.46 ft / 6.54 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   9.06" / 230 mm   4.72" / 120 mm      7.87" / 200 mm
   2nd:   0.79" / 20 mm         -               -
   3rd:   0.79" / 20 mm         -               -
   4th:   0.50" / 13 mm         -               -

   - Armour deck: 1.97" / 50 mm, Conning tower: 9.06" / 230 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 36 000 shp / 26 856 Kw = 24.05 kts
   Range 7 000nm at 12.00 kts
   Bunker at max displacement = 1 570 tons

Complement:
   635 - 826

Cost:
   £2.487 million / $9.948 million

Distribution of weights at normal displacement:
   Armament: 748 tons, 5.4 %
   Armour: 4 532 tons, 32.9 %
      - Belts: 1 959 tons, 14.2 %
      - Torpedo bulkhead: 476 tons, 3.5 %
      - Armament: 962 tons, 7.0 %
      - Armour Deck: 1 023 tons, 7.4 %
      - Conning Tower: 112 tons, 0.8 %
   Machinery: 1 341 tons, 9.7 %
   Hull, fittings & equipment: 5 229 tons, 38.0 %
   Fuel, ammunition & stores: 1 572 tons, 11.4 %
   Miscellaneous weights: 350 tons, 2.5 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     17 718 lbs / 8 037 Kg = 27.9 x 10.8 " / 275 mm shells or 3.3 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 3.7 ft / 1.1 m
   Roll period: 15.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0.67
   Seaboat quality  (Average = 1.00): 1.20

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.556
   Length to Beam Ratio: 7.68 : 1
   'Natural speed' for length: 23.55 kts
   Power going to wave formation at top speed: 48 %
   Trim (Max stability = 0, Max steadiness = 100): 60
   Bow angle (Positive = bow angles forward): 8.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      22.97 ft / 7.00 m
      - Forecastle (18 %):   17.72 ft / 5.40 m
      - Mid (50 %):      14.11 ft / 4.30 m
      - Quarterdeck (17 %):   14.11 ft / 4.30 m
      - Stern:      14.11 ft / 4.30 m
      - Average freeboard:   15.69 ft / 4.78 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 105.4 %
      - Above water (accommodation/working, high = better): 109.0 %
   Waterplane Area: 28 087 Square feet or 2 609 Square metres
   Displacement factor (Displacement / loading): 102 %
   Structure weight / hull surface area: 133 lbs/sq ft or 649 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.98
      - Longitudinal: 1.15
      - 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

[Jefgte]

Testing a drawing for this kind of Escort Cruiser....




;)

[Jefgte]

Increase from 24 to 27kts cost 3800t - 3.8BP  :o

Same armament & protection but 27kts...

La Sombra de Waskar, Peru Armored Cruiser laid down 1918 (Engine 1916)

Displacement:
   16 800 t light; 17 633 t standard; 18 715 t normal; 19 580 t full load

Dimensions: Length overall / water x beam x draught
   692.30 ft / 688.98 ft x 78.74 ft x 24.15 ft (normal load)
   211.01 m / 210.00 m x 24.00 m  x 7.36 m

Armament:
      8 - 10.83" / 275 mm guns (4x2 guns), 661.39lbs / 300.00kg shells, 1918 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread
     Aft Main mounts separated by engine room
      12 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1918 Model
     Breech loading guns in casemate mounts
     on side, evenly spread
      4 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1918 Model
     Quick firing guns in deck mounts
     on side, all amidships, all raised mounts - superfiring
      4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1918 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 6 641 lbs / 3 012 kg
   Shells per gun, main battery: 120
   8 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   9.06" / 230 mm   452.76 ft / 138.00 m   12.73 ft / 3.88 m
   Ends:   3.15" / 80 mm   164.04 ft / 50.00 m   8.01 ft / 2.44 m
     72.18 ft / 22.00 m Unarmoured ends
     Main Belt covers 101 % of normal length

   - Torpedo Bulkhead:
      1.57" / 40 mm   452.76 ft / 138.00 m   23.98 ft / 7.31 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   9.06" / 230 mm   4.72" / 120 mm      7.87" / 200 mm
   2nd:   1.57" / 40 mm         -               -
   3rd:   0.79" / 20 mm         -               -
   4th:   0.50" / 13 mm         -               -

   - Armour deck: 2.56" / 65 mm, Conning tower: 9.06" / 230 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 62 000 shp / 46 252 Kw = 27.07 kts
   Range 7 000nm at 12.00 kts
   Bunker at max displacement = 1 948 tons

Complement:
   799 - 1 040

Cost:
   £3.172 million / $12.690 million

Distribution of weights at normal displacement:
   Armament: 803 tons, 4.3 %
   Armour: 5 854 tons, 31.3 %
      - Belts: 2 347 tons, 12.5 %
      - Torpedo bulkhead: 633 tons, 3.4 %
      - Armament: 1 026 tons, 5.5 %
      - Armour Deck: 1 711 tons, 9.1 %
      - Conning Tower: 138 tons, 0.7 %
   Machinery: 2 310 tons, 12.3 %
   Hull, fittings & equipment: 7 507 tons, 40.1 %
   Fuel, ammunition & stores: 1 915 tons, 10.2 %
   Miscellaneous weights: 325 tons, 1.7 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     24 910 lbs / 11 299 Kg = 39.3 x 10.8 " / 275 mm shells or 4.2 torpedoes
   Stability (Unstable if below 1.00): 1.16
   Metacentric height 4.6 ft / 1.4 m
   Roll period: 15.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0.48
   Seaboat quality  (Average = 1.00): 1.21

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.500
   Length to Beam Ratio: 8.75 : 1
   'Natural speed' for length: 26.25 kts
   Power going to wave formation at top speed: 45 %
   Trim (Max stability = 0, Max steadiness = 100): 60
   Bow angle (Positive = bow angles forward): 8.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      23.62 ft / 7.20 m
      - Forecastle (18 %):   18.04 ft / 5.50 m
      - Mid (50 %):      14.76 ft / 4.50 m
      - Quarterdeck (17 %):   14.76 ft / 4.50 m
      - Stern:      14.76 ft / 4.50 m
      - Average freeboard:   16.26 ft / 4.96 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 100.8 %
      - Above water (accommodation/working, high = better): 120.6 %
   Waterplane Area: 36 146 Square feet or 3 358 Square metres
   Displacement factor (Displacement / loading): 109 %
   Structure weight / hull surface area: 148 lbs/sq ft or 720 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.09
      - Longitudinal: 0.97
      - Overall: 1.00
   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
   Good seaboat, rides out heavy weather easily