Heavy Escort Cruiser

[Jefgte]

Her job is to protect the Fleet from strong scouting cruisers - ACs & BCs-


20000T-3T2x340, Peru HEC laid down 1920 (Engine 1916)

Displacement:
   20 000 t light; 20 983 t standard; 22 164 t normal; 23 108 t full load

Dimensions: Length overall / water x beam x draught
   643.04 ft / 643.04 ft x 88.58 ft x 26.19 ft (normal load)
   196.00 m / 196.00 m x 27.00 m  x 7.98 m

Armament:
      6 - 13.39" / 340 mm guns (3x2 guns), 1 199.24lbs / 543.97kg shells, 1920 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread, 1 raised mount
     Aft Main mounts separated by engine room
      12 - 4.72" / 120 mm guns (6x2 guns), 52.72lbs / 23.91kg shells, 1920 Model
     Breech loading guns in turrets (on barbettes)
     on side, evenly spread
      8 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1920 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, 1920 Model
     Machine guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 7 936 lbs / 3 600 kg
   Shells per gun, main battery: 120
   6 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   11.8" / 300 mm   374.02 ft / 114.00 m   12.73 ft / 3.88 m
   Ends:   3.15" / 80 mm   262.47 ft / 80.00 m   9.19 ft / 2.80 m
     6.56 ft / 2.00 m Unarmoured ends
   Upper:   1.57" / 40 mm   374.02 ft / 114.00 m   8.01 ft / 2.44 m
     Main Belt covers 89 % of normal length

   - Torpedo Bulkhead:
      1.57" / 40 mm   374.02 ft / 114.00 m   25.98 ft / 7.92 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.4" / 340 mm   5.91" / 150 mm      11.8" / 300 mm
   2nd:   3.15" / 80 mm   1.57" / 40 mm      1.57" / 40 mm
   3rd:   0.79" / 20 mm         -               -

   - Armour deck: 3.35" / 85 mm, Conning tower: 13.39" / 340 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 60 000 shp / 44 760 Kw = 25.82 kts
   Range 7 000nm at 12.00 kts
   Bunker at max displacement = 2 125 tons

Complement:
   907 - 1 180

Cost:
   £4.364 million / $17.456 million

Distribution of weights at normal displacement:
   Armament: 992 tons, 4.5 %
   Armour: 7 799 tons, 35.2 %
      - Belts: 2 960 tons, 13.4 %
      - Torpedo bulkhead: 566 tons, 2.6 %
      - Armament: 1 652 tons, 7.5 %
      - Armour Deck: 2 393 tons, 10.8 %
      - Conning Tower: 228 tons, 1.0 %
   Machinery: 2 235 tons, 10.1 %
   Hull, fittings & equipment: 8 583 tons, 38.7 %
   Fuel, ammunition & stores: 2 164 tons, 9.8 %
   Miscellaneous weights: 390 tons, 1.8 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     30 751 lbs / 13 948 Kg = 25.6 x 13.4 " / 340 mm shells or 5.4 torpedoes
   Stability (Unstable if below 1.00): 1.07
   Metacentric height 4.8 ft / 1.5 m
   Roll period: 17.0 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.52
   Seaboat quality  (Average = 1.00): 1.22

Hull form characteristics:
   Hull has low quarterdeck
   Block coefficient: 0.520
   Length to Beam Ratio: 7.26 : 1
   'Natural speed' for length: 25.36 kts
   Power going to wave formation at top speed: 48 %
   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:      26.90 ft / 8.20 m
      - Forecastle (18 %):   19.69 ft / 6.00 m
      - Mid (50 %):      16.40 ft / 5.00 m
      - Quarterdeck (17 %):   16.40 ft / 5.00 m (16.73 ft / 5.10 m before break)
      - Stern:      16.40 ft / 5.00 m
      - Average freeboard:   18.09 ft / 5.51 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 89.5 %
      - Above water (accommodation/working, high = better): 130.2 %
   Waterplane Area: 38 657 Square feet or 3 591 Square metres
   Displacement factor (Displacement / loading): 108 %
   Structure weight / hull surface area: 160 lbs/sq ft or 781 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.97
      - Longitudinal: 1.23
      - 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

[The Rock Doctor]

Didn't you just say yesterday that you didn't want to have battlecruisers zooming around the ocean?

[Korpen]

Her job is to protect the Fleet from strong scouting cruisers - ACs & BCs-


20000T-3T2x340, Peru HEC laid down 1920 (Engine 1916)

Displacement:
   20 000 t light; 20 983 t standard; 22 164 t normal; 23 108 t full load

She is useless for the intended mission.
She really is at best equal to most BCs in combat power, and her speed is not all that great either given her contruction date..

[Jefgte]

Didn't you just say yesterday that you didn't want to have battlecruisers zooming around the ocean?

She is too slow for a Battle Cruiser
She is an oponant to fast battlecruiser & Scouting Cruisers when they came near the Squadron.
Her speed is just 3 knots over the battleships to move easily around them,
not 28 or 30 kts...


;)

[Jefgte]

Heavier type with the new GC 380mm gun

23800T-3T2x380, Peru HEC laid down 1920 (Engine 1916)

Displacement:
   23 800 t light; 25 058 t standard; 26 386 t normal; 27 449 t full load

Dimensions: Length overall / water x beam x draught
   688.98 ft / 688.98 ft x 95.14 ft x 26.99 ft (normal load)
   210.00 m / 210.00 m x 29.00 m  x 8.23 m

Armament:
      6 - 14.96" / 380 mm guns (3x2 guns), 1 674.25lbs / 759.43kg shells, 1920 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread, 1 raised mount
     Aft Main mounts separated by engine room
      12 - 4.72" / 120 mm guns (6x2 guns), 52.72lbs / 23.91kg shells, 1920 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread
      8 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1920 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, 1920 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 10 786 lbs / 4 893 kg
   Shells per gun, main battery: 120
   6 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   11.8" / 300 mm   419.95 ft / 128.00 m   12.73 ft / 3.88 m
   Ends:   3.15" / 80 mm   262.47 ft / 80.00 m   9.19 ft / 2.80 m
     6.56 ft / 2.00 m Unarmoured ends
   Upper:   1.57" / 40 mm   419.95 ft / 128.00 m   8.01 ft / 2.44 m
     Main Belt covers 94 % of normal length

   - Torpedo Bulkhead:
      1.57" / 40 mm   419.95 ft / 128.00 m   26.05 ft / 7.94 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.4" / 340 mm   5.91" / 150 mm      11.8" / 300 mm
   2nd:   3.15" / 80 mm   1.57" / 40 mm      1.57" / 40 mm
   3rd:   0.79" / 20 mm         -               -

   - Armour deck: 3.54" / 90 mm, Conning tower: 13.39" / 340 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 66 000 shp / 49 236 Kw = 25.86 kts
   Range 7 000nm at 12.00 kts
   Bunker at max displacement = 2 391 tons

Complement:
   1 034 - 1 345

Cost:
   £5.460 million / $21.838 million

Distribution of weights at normal displacement:
   Armament: 1 348 tons, 5.1 %
   Armour: 8 957 tons, 33.9 %
      - Belts: 3 260 tons, 12.4 %
      - Torpedo bulkhead: 637 tons, 2.4 %
      - Armament: 1 882 tons, 7.1 %
      - Armour Deck: 2 922 tons, 11.1 %
      - Conning Tower: 256 tons, 1.0 %
   Machinery: 2 459 tons, 9.3 %
   Hull, fittings & equipment: 10 635 tons, 40.3 %
   Fuel, ammunition & stores: 2 586 tons, 9.8 %
   Miscellaneous weights: 400 tons, 1.5 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     35 624 lbs / 16 159 Kg = 21.3 x 15.0 " / 380 mm shells or 6.0 torpedoes
   Stability (Unstable if below 1.00): 1.09
   Metacentric height 5.5 ft / 1.7 m
   Roll period: 17.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.54
   Seaboat quality  (Average = 1.00): 1.23

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.522
   Length to Beam Ratio: 7.24 : 1
   'Natural speed' for length: 26.25 kts
   Power going to wave formation at top speed: 46 %
   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:      27.56 ft / 8.40 m
      - Forecastle (18 %):   20.01 ft / 6.10 m
      - Mid (50 %):      16.73 ft / 5.10 m
      - Quarterdeck (17 %):   16.73 ft / 5.10 m
      - Stern:      16.73 ft / 5.10 m
      - Average freeboard:   18.39 ft / 5.61 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 90.2 %
      - Above water (accommodation/working, high = better): 134.9 %
   Waterplane Area: 44 568 Square feet or 4 141 Square metres
   Displacement factor (Displacement / loading): 105 %
   Structure weight / hull surface area: 176 lbs/sq ft or 857 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.98
      - Longitudinal: 1.17
      - 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

[Borys]

3 knots is not enough to make a difference ...
Borys

[Sachmle]

If you're gonna sink that much BP into it...go whole hog and add the 3kts to make her a BC. What would the first one weigh in at at 28kts?

[Korpen]

Didn't you just say yesterday that you didn't want to have battlecruisers zooming around the ocean?

She is too slow for a Battle Cruiser
She is an oponant to fast battlecruiser & Scouting Cruisers when they came near the Squadron.
Her speed is just 3 knots over the battleships to move easily around them,
not 28 or 30 kts...

I do not think she is well suited to that sort of mission.
She is unable to really compete with any pair of hostile battlecruisers (and expecting them to be alone would be naïve), so should have to be close to the battleline so that it can protect her. This is reinforced by her not very high speed, if she see something she cannot handle she got to be fairly close to the core of the battlefleet or risk not getting there in time.
Think the line would be better protected by adding another BB instead, as it can perform the same mission on detached duty, but is better suited to slug it out with quality opposition. 

[The Rock Doctor]

Usually two battlecruisers out-compete one battlecruiser, this is true.

My question would be:  in what scenario do you anticipate Peru to be facing enemy battlecruisers without the possibility of Colombian or Iberian armored cruisers operating in your support?

[Jefgte]

My question would be:  in what scenario do you anticipate Peru to be facing enemy battlecruisers without the possibility of Colombian or Iberian armored cruisers operating in your support?

That depend the size of the BCs

1st generation - inf to 20000t with 305mm guns max-
Light BBs Autofagasta + LaPaz - (better chance when 16200t rebuilt with 6x340)

2nd generation - guns sup to 305mm
BB Atahualpa
BB Waskhar

I could'nt made better... :'(

[The Rock Doctor]

Now I'm confused.

Do you mean that:

A)  The Heavy Escort Cruiser is designed to dominate, or at least contest, the "scouting space" between the Peruvian battleline and the enemy's battleline.

...or...

B)  The Heavy Escort Cruiser is designed to defeat enemy battlecruisers that could sink Peru's battleships?

[Jefgte]

A)  is right
B)  The Heavy Escort Cruiser is designed to defeat enemy battlecruisers
Yes
Sink Peruvian BBs ... I hope "NO"

----------------

Originaly Escort cruiser is made to defeat AC & PC - She have just a few knots over the BBs speed.

The inf EC speed in comparison of PC & AC is counter balanced by heavy armament &/or better protection.

Same thing with the HEC but not for AC or PC but for BC.
heavy armament &/or better protection than BC.

[Jefgte]

Escort cruiser is an defender concept for the Battleline

The speed is 4 to 5 kts sup to the BBs.
Their job is to engage Cruisers (scout or not)
& protect BBs battleline from DDs attack.

Idem for Heavy Escort Cruiser (but add BC in the job)
Their job is to engage Cruisers, Battle Cruisers & protect BBs battleline from DDs attack.

Speed is inf to BC -
The weight economised for the speed is made to increase armament &/ or protection

------------
For the nearly the same displacement.
In theory,
12 000t EC is sup to 12 000t AC.

-------------

- Almirante Commandante del Armada  - Fidel Salazar Vencedores

"We don't need fast runners we need powerful boxers"

[The Rock Doctor]

Okay, I think I can crystallize what I'm thinking into two sentences:

1)  Battleships should not need defence against battlecruisers.

2)  The HEC is, itself, too expensive (and slow) to be used to defend a battleship against destroyer attack.

[Jefgte]

1)  Battleships should not need defence against battlecruisers.

They need if they engage enemy BBs.

The HEC is, itself, too expensive (and slow) to be used to defend a battleship against destroyer attack.

Right, that's for Cruisers.