Parthian vessels 1916 onwards

[Kaiser Kirk]

The following ship, even after refit, is 'borderline'.
BUT it fits a need.
The Byzantines have fielded some of what I would call "light armored cruisers".  The Harads were built 1914-1915, while the Foros were rebuilt in 1917, So the Parthians should know about them and have some idea of what they are.

The original idea was to update theBuchephalus[/u]...but with thin decks and belt, it really would not be worth it.
The Sparabaras have  better armor.  So, the Byzantines are Twin 235,  but they are 1896 models ...which means 1880 TECH.... and twin mounts, which slows their effective rate of fire and lowers their ME and penetration....and I have better armor.   

While my old Mithradates and Asdar Classes match up, Byzantine has more vessels in this class than I do, and overall I don't match up well in this category. So a couple more hulls to patch me through will be welcome.

I have a number of 230mm designs for that role, but am choosing to build the bigger 255mm Zemaka which are better rounded, and I think can reasonable charge and engage his 4x 343mm ships- barring an unlucky hit.

1899 AC Refit

Cost Basis :
A)  20% of original cost
B)  Armament and machinery , BP cost = (tonnage/1000); $ cost = twice the BP cost.
C ) Armor and functional miscellaneous weight, BP cost = (tonnage/1000); $ cost is equal to BP cost.
D)  Hull, fittings & equipment, No BP cost; $ cost is equal to (tonnage/5000)
E)  Fuel, ammunition & stores; non-functional miscellaneous weight  , No BP cost; $ cost is (tonnage/2000).

A) Original Cost $9.1 * 0.2 = $1.82

B) Engines and Armanent
New Turbo-Electric engines 100% oil : 2003
240L40 replaced with 230L44.
165L45 replaced with 165L43
90L45  replaced with 90L50 AA
15L60 added.

New guns and mounts : 777t
Subtotal : 2780
$5.56, 2.780 BP

C) Armor and Functional Misc Wt
Turret & mount armor : 176
Additional strake belt armor, laminated deck armor : 380
Turbogenerators :  501
Other Functional Misc Wt  : 279

Subtotal : 1336
$1.336, 1.336 BP

D)Hull fittings & equip :
Old : 2663
New :  3,149 (+93 bulge steel) : 3242
Change : 486
subtotal : 486/5000 = $.0972
OR 3,242 / 5000 = $0.6484

E) Fuel, Ammunition
Fuel : 1816t    ~24days at cruising spd
Mag : no changed

Subtotal : 1816/2000 = $0.908


A) $1.82
B) $5.56, 2.780 BP
C) $1.336, 1.336 BP
D)  $0.6484
E)  $0.908

SubTotal :
$10.2724,
4.116 BP

Total Cost
$10.27,
4.12 BP

ACR 7 Sparbara Refurb 1920, Parthian Armored Cruiser laid down 1899 (Engine 1920)

Displacement:
   9,575 t light; 10,119 t standard; 11,128 t normal; 11,935 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (454.69 ft / 447.83 ft) x 63.98 ft (Bulges 73.82 ft) x (20.67 / 22.06 ft)
   (138.59 m / 136.50 m) x 19.50 m (Bulges 22.50 m)  x (6.30 / 6.72 m)

Armament:
      4 - 9.06" / 230 mm 44.0 cal guns - 392.42lbs / 178.00kg shells, 121 per gun
     Breech loading guns in turret on barbette mounts, 1913 Model
     2 x 2-gun mounts on centreline ends, evenly spread
      4 - 6.50" / 165 mm 43.0 cal guns - 143.30lbs / 65.00kg shells, 170 per gun
     Quick firing guns in turret on barbette mounts, 1913 Model
     2 x Single mounts on sides, aft deck forward
     2 x Single mounts on sides, aft deck aft
      8 - 6.50" / 165 mm 43.0 cal guns - 143.30lbs / 65.00kg shells, 170 per gun
     Quick firing guns in casemate mounts, 1913 Model
     8 x Single mounts on sides, aft evenly spread
      8 hull mounts in casemates- Limited use in all but light seas
      8 - 3.54" / 90.0 mm 50.0 cal guns - 24.25lbs / 11.00kg shells, 450 per gun
     Quick firing guns in deck and hoist mounts, 1911 Model
     2 x 2-gun mounts on centreline ends, evenly spread
      2 raised mounts
     2 x 2-gun mounts on sides amidships
      2 raised mounts
      16 - 0.59" / 15.0 mm 60.0 cal guns - 0.11lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1919 Model
     8 x Twin mounts on sides, evenly spread
      8 double raised mounts
      Weight of broadside 3,485 lbs / 1,581 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   5.31" / 135 mm   322.44 ft / 98.28 m   11.71 ft / 3.57 m
   Ends:   1.38" / 35 mm   125.36 ft / 38.21 m   8.20 ft / 2.50 m
   Upper:   3.94" / 100 mm   196.85 ft / 60.00 m   8.20 ft / 2.50 m
     Main Belt covers 111 % of normal length

   - Hull Bulges:
      0.51" / 13 mm   322.44 ft / 98.28 m   15.26 ft / 4.65 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   6.50" / 165 mm   2.56" / 65 mm      5.31" / 135 mm
   2nd:   5.31" / 135 mm   0.98" / 25 mm      3.94" / 100 mm
   3rd:   3.94" / 100 mm   0.98" / 25 mm      0.98" / 25 mm
   4th:   0.20" / 5 mm         -               -

   - Protected deck - multiple decks:
   For and Aft decks: 2.76" / 70 mm
   Forecastle: 1.38" / 35 mm  Quarter deck: 1.38" / 35 mm

   - Conning towers: Forward 5.31" / 135 mm, Aft 3.54" / 90 mm

Machinery:
   Oil fired boilers, steam turbines,  plus batteries,
   Electric motors, 3 shafts, 57,286 shp / 42,736 Kw = 27.00 kts
   Range 7,600nm at 14.00 kts
   Bunker at max displacement = 1,816 tons

Complement:
   541 - 704

Cost:
   £0.867 million / $3.468 million

Distribution of weights at normal displacement:
   Armament: 777 tons, 7.0 %
      - Guns: 777 tons, 7.0 %
   Armour: 2,821 tons, 25.3 %
      - Belts: 1,197 tons, 10.8 %
      - Bulges: 93 tons, 0.9 %
      - Armament: 460 tons, 4.1 %
      - Armour Deck: 975 tons, 8.8 %
      - Conning Towers: 95 tons, 0.9 %
   Machinery: 2,003 tons, 18.0 %
   Hull, fittings & equipment: 3,149 tons, 28.3 %
   Fuel, ammunition & stores: 1,553 tons, 14.0 %
   Miscellaneous weights: 825 tons, 7.4 %
      - Hull below water: 638 tons
      - Bulge void weights: 45 tons
      - Hull above water: 9 tons
      - On freeboard deck: 5 tons
      - Above deck: 128 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     13,937 lbs / 6,322 Kg = 37.5 x 9.1 " / 230 mm shells or 2.1 torpedoes
   Stability (Unstable if below 1.00): 1.40
   Metacentric height 4.6 ft / 1.4 m
   Roll period: 14.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 51 %
         - Recoil effect (Restricted arc if above 1.00): 0.25
   Seaboat quality  (Average = 1.00): 0.87

Hull form characteristics:
   Hull has rise forward of midbreak,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.570 / 0.573
   Length to Beam Ratio: 6.07 : 1
   'Natural speed' for length: 21.16 kts
   Power going to wave formation at top speed: 63 %
   Trim (Max stability = 0, Max steadiness = 100): 59
   Bow angle (Positive = bow angles forward): 15.00 degrees
   Stern overhang: -3.28 ft / -1.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   15.00 %,  25.59 ft / 7.80 m,  23.82 ft / 7.26 m
      - Forward deck:   20.00 %,  23.82 ft / 7.26 m,  22.05 ft / 6.72 m
      - Aft deck:   52.00 %,  13.85 ft / 4.22 m,  13.85 ft / 4.22 m
      - Quarter deck:   13.00 %,  13.85 ft / 4.22 m,  13.85 ft / 4.22 m
      - Average freeboard:      17.27 ft / 5.26 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 87.1 %
      - Above water (accommodation/working, high = better): 117.4 %
   Waterplane Area: 20,374 Square feet or 1,893 Square metres
   Displacement factor (Displacement / loading): 111 %
   Structure weight / hull surface area: 115 lbs/sq ft or 563 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.93
      - Longitudinal: 1.79
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

Completed in 1901, she was fast for her time.
Now she is slow, underarmed and underarmored.

The notes of the original indicated it was supposed to be a mulit-level protected deck, 20/40, rather than
a single 60mm. The decks should work up to about 10" shells.

The Byzantines have for years fielded a number of 6x 240mm, ~27tkt  heavy fleet scouts, what the Parthians would call 'light armored cruisers'. The Parthians counter these with the Mithradantes and Andar Classes with 10". The Byzantines also have some odd hybrid cruisers with 343m which continue to bother the Parthians.

old engines : 2822
old bunker : 1953
old main magazines : 106

Under Refurbishment, Waterline can be 'raised or lowered' by 10%.
That is apparently a displacement thing.

I guess it means I can make the draft higher/lower, but I move freeboard
to reflect that. That would actually echo how a lot of interwar ships had additional weight added - they
just sat lower in the water, frequently submerging the top of their belts - or you could blister the hull,
reclaiming freeboard.

To provide floatation, a bulge from the bottom of the belt at -1.65 to the keel at -6.3 is added.
To give that 'weight', 13mm of hull material is added. =93t This is accounted for under HULL & Fittings.

It does mean I could raise the vessel by 0.7m, changing freeboard to average 5.26
and draft to 6.3
That would also change the bottom of the belt from -1.6m to -.9m. Not good.
To compensate for the then-shallow belt, I would have to add a strake of armor below the main belt.
Which is doable.
And it gets the seakeeping to barely doable at 27 knots.

New Engines : 2003
New Bunkers : 1816

The main battery is replaced by the 1913 230L44 178kg
This was developed specifically to replace these ancient 240L40s.

The secondary battery is replaced by 1913 165L43QF 65kg
8x 1911 AA guns are fitted in place of the 12 Anti-boat guns.
Sited in 4 spots - 2 above the main guns, and 2 amid ships,
the new two-gun mount is used.
15mm are fitted for dockside/boarding security and anti-strafing.

New Guns & Mounts : 777t

New Turret Armor :    + 75t on 165mm  = 176

At this point,
a strake of +.75m high x 135mm armor can be added below the main belt.
Belt goes from 667t to 845t = 178t


End belts are removed and replaced with 35mm : 52t

Keeping Byzantine 191mm shells out of the casement area is desirable,
but keeping the Damas class 254mm out of the engines is critical.
So while the superstructure is being remodeled, 10mm of deckarmor plates are laminated on top
of the existing protective deck. Lamination counts as 80%, so boosts to effectively 48mm.
The seperate 20mm deck above the casement would add another 50%, giving 58mm vs plunging fire.

10mm is also added to the forecastel and quarterdeck, to effectively 33mm.  =150t


Misc Wt :
45t reserve

78t FC
25t LR Radio
25t Searchlight Tower

5t Paravanes

9t   CO2 Air Conditioning

137 Torpedo Nets
501 Turbo Generator


Decks (after raise):
+6.72 : Forecastle deck
+4.22 : Weather deck, 20mm over casements
           +1.92 Top of main belt.guards against diving shells against slope of protective deck.
+1.72 : Gun deck, crown of 40mm protective deck, top of 25mm decks and end belts
-0.78 : 3rd deck, Bottom of protective deck
          -.90 bottom main belt
          -1.65 Bottom additional strake
-3.78 : 2nd Deck
-5.8   : Engineering Deck

[Jefgte]

...So, the Byzantines are Twin 235,  but they are 1896 models ...which means 1880 TECH.... and twin mounts, which slows their effective rate of fire and lowers their ME and penetration....and I have better armor...   

I could replace T2x234 Mlle 1896 with T3x191 Mlle 1920 (HMS Hawkins guns)

[Kaiser Kirk]

Yep, you could do that.
I expect those would fit in the same mounts. 
I was hoping my 230L44 as a single would fit in twin 165 or 180 spots....but no it does not.
But multiple 191s should fit.

I'm debating a new version of my 180mm to retrofit to my cruisers to better counter your 191mm.
The 1910 tech 180L43 has an 85kg shell and good MV, but the 191 has a bit more per-shell punch.

I had really wanted to lay down some 10-12,000 LACs , with either 6-8x 230 or 8-12x180, but I didnot have the budget for it.

We shall see what the future brings.

Right now I'm working on the 1921 rebuild of the Mithradates / Rustam class.
Then the PC-3/4s ... etc

[Kaiser Kirk]

Hmm, I'll have to wait on the Rustam and Asdar classes until HY2 1921.
Apparently I neglected to design a twin 255L47 mount to replace their guns with.
Ironic since I used the Free on a 4-Gun, Paid for a 4-gun, a 3-gun, and a 2-gun.

Still, I have plenty of other needs, so I'll wait on those two.

[Kaiser Kirk]

I mainly explored the AC refit to decide to keep or scrap it. I guess I will keep it, more useful than a 4500ton cruiser.
However, I will likely put it in 1921.

I think this might be my final 1920 refurbish class.

Parthian protected cruisers were meant to be somewhat unusual.
'Big' at the 6000ton mark, with ranges over 7000nm for potential commerce raiding - or patrolling Africa/Indonesia.
and heavy weapons batteries of QF guns.

The PC-III "Rakhsh", PC-IV "Nisaean" was completed in 1903.
They were the last of the reciprocating protective cruisers.

They also introduced the Parthian typical medium gun arrangement.
4 guns on centerline, with two 3-gun arrays on each side.
The arrangement allows 6 guns to bear forward, and 4-6 to bear aft,
with a 7 gun broadside.
The same deck 'spots' will be used, but heavier 180mm will be fitted to better counter
the trends in Byzantine ships to 191mm.

                    1 (3)              5
  A (B)                                        (X)Y
                    2 (4)              6

Cost Basis :
A)  20% of original cost
B)  Armament and machinery , BP cost = (tonnage/1000); $ cost = twice the BP cost.
C ) Armor and functional miscellaneous weight, BP cost = (tonnage/1000); $ cost is equal to BP cost.
D)  Hull, fittings & equipment, No BP cost; $ cost is equal to (tonnage/5000)
E)  Fuel, ammunition & stores; non-functional miscellaneous weight  , No BP cost; $ cost is (tonnage/2000).

A) Original Cost $6* 0.2 = $1.20

B) Engines and Armanent
New Turbo-Electric engines 100% oil : 1762
165L45 replaced with 180L43
60L50 replaced with 90L50 AA
15L60 added.

New guns and mounts : 457
Subtotal : 2219
$4.428, 2.219 BP

C) Armor and Functional Misc Wt
Turret & mount armor : 135
Additional strake belt armor, laminated deck armor : 170
Turbogenerators :  441
Other Functional Misc Wt  : 163

Subtotal : 909
$0.909, 0.909 BP

D)Hull fittings & equip :
No Change

E) Fuel, Ammunition
Fuel : 1409   ~27days at cruising spd
Mag : no changed

Subtotal : 1409/2000 = $0.7045


A) $1.20
B) $4.428, 2.219 BP
C) $0.909, 0.909 BP
D)  n/a
E)  $0.7045

SubTotal :
$7.2715,
3.128 BP

Total Cost
$7.27,
3.13 BP

PC-2, Parthia Protected Cruiser Series I laid down 1902 (Engine 1920)

Displacement:
   5,998 t light; 6,307 t standard; 7,090 t normal; 7,716 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (492.13 ft / 475.72 ft) x 49.21 ft x (21.33 / 22.73 ft)
   (150.00 m / 145.00 m) x 15.00 m  x (6.50 / 6.93 m)

Armament:
      10 - 7.09" / 180 mm 43.0 cal guns - 187.39lbs / 85.00kg shells, 140 per gun
     Breech loading guns in deck and hoist mounts, 1913 Model
     4 x Single mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
     6 x Single mounts on sides, evenly spread
      2 raised mounts
      4 - 3.54" / 90.0 mm 50.0 cal guns - 24.25lbs / 11.00kg shells, 300 per gun
     Anti-air guns in deck mounts, 1911 Model
     4 x Single mounts on side ends, evenly spread
      4 double raised mounts
      16 - 0.59" / 15.0 mm 60.0 cal guns - 0.11lbs / 0.05kg shells, 5,000 per gun
     Quick firing guns in deck mounts, 1899 Model
     6 x Twin mounts on sides, evenly spread
      6 raised mounts
     2 x Twin mounts on centreline ends, evenly spread
      2 double raised mounts
      Weight of broadside 1,973 lbs / 895 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   2.56" / 65 mm   428.15 ft / 130.50 m   12.01 ft / 3.66 m
   Ends:   Unarmoured
     Main Belt covers 138 % of normal length

   - Hull void:
      0.00" / 0 mm     0.00 ft / 0.00 m   0.00 ft / 0.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.38" / 35 mm   1.38" / 35 mm      1.38" / 35 mm
   2nd:   0.79" / 20 mm         -               -
   3rd:   0.24" / 6 mm         -               -

   - Protected deck - single deck:
   For and Aft decks: 1.57" / 40 mm
   Forecastle: 0.98" / 25 mm  Quarter deck: 1.57" / 40 mm

   - Conning towers: Forward 3.54" / 90 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 2 shafts, 50,398 shp / 37,597 Kw = 29.00 kts
   Range 7,900nm at 14.00 kts
   Bunker at max displacement = 1,409 tons

Complement:
   386 - 502

Cost:
   £0.618 million / $2.474 million

Distribution of weights at normal displacement:
   Armament: 457 tons, 6.4 %
      - Guns: 457 tons, 6.4 %
   Armour: 1,132 tons, 16.0 %
      - Belts: 513 tons, 7.2 %
      - Armament: 135 tons, 1.9 %
      - Armour Deck: 456 tons, 6.4 %
      - Conning Tower: 28 tons, 0.4 %
   Machinery: 1,762 tons, 24.9 %
   Hull, fittings & equipment: 2,014 tons, 28.4 %
   Fuel, ammunition & stores: 1,091 tons, 15.4 %
   Miscellaneous weights: 634 tons, 8.9 %
      - Hull below water: 466 tons
      - Hull void weights: 30 tons
      - Hull above water: 6 tons
      - On freeboard deck: 36 tons
      - Above deck: 96 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     5,770 lbs / 2,617 Kg = 32.4 x 7.1 " / 180 mm shells or 1.0 torpedoes
   Stability (Unstable if below 1.00): 1.12
   Metacentric height 2.1 ft / 0.7 m
   Roll period: 14.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 51 %
         - Recoil effect (Restricted arc if above 1.00): 0.96
   Seaboat quality  (Average = 1.00): 1.05

Hull form characteristics:
   Hull has rise forward of midbreak,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.497 / 0.507
   Length to Beam Ratio: 9.67 : 1
   'Natural speed' for length: 21.81 kts
   Power going to wave formation at top speed: 57 %
   Trim (Max stability = 0, Max steadiness = 100): 48
   Bow angle (Positive = bow angles forward): 15.00 degrees
   Stern overhang: 9.84 ft / 3.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   5.00 %,  20.54 ft / 6.26 m,  20.54 ft / 6.26 m
      - Forward deck:   50.00 %,  20.54 ft / 6.26 m,  20.54 ft / 6.26 m
      - Aft deck:   40.00 %,  12.34 ft / 3.76 m,  12.34 ft / 3.76 m
      - Quarter deck:   5.00 %,  12.34 ft / 3.76 m,  12.34 ft / 3.76 m
      - Average freeboard:      16.85 ft / 5.14 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 109.5 %
      - Above water (accommodation/working, high = better): 129.7 %
   Waterplane Area: 15,556 Square feet or 1,445 Square metres
   Displacement factor (Displacement / loading): 104 %
   Structure weight / hull surface area: 84 lbs/sq ft or 409 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.84
      - Longitudinal: 1.59
      - Overall: 0.90
   Caution: Hull subject to strain in open-sea
   Adequate machinery, storage, compartmentation space
   Excellent accommodation and workspace room

Old Engine : 2546
Old Bunker : 1488

New Turboelectric Turbines : 1762
New TurboGenerator : 441
New Bunker : 1409

Replace old 165mm with 180mm
100+357 = 457t guns & mounts
135t - weapon Armor

The old mine deck is removed,
and the weight put towards
a layer of extra deck armor.
+15mm deck laminated over citadel and quarterdeck : +170t

This makes the protective deck armor
at the citadel an effective 37mm on the crown and 102mm on the slopes.

Misc Wt
30t - Misc Wt

46t - FC
25t - LR Radio
25t - Searchlight tower

36t - 4TT3 21"

6t - CO2 Compressor AC

441t - Turbogenerator
25t - Extra Pumps

Intended as a Protected  Cruiser for the fleet
The vessel is fitted with a protective deck, 90mm on the slopes and 25mm on the flat

25t - Long range radio
30t - 0.5% increased ventilation
24t - Torpedoes 4 xT2 (8)
160t - minedeck on 2nd deck aft, 2 mine rails w/80 mines ea. drop through ports in stern
60t - construction reserve

+5.26 Forecastle deck
+3.76 Weather Deck
+1.26 2nd deck, top of main belt, protective deck
-1.24  Bottom of main belt, 1st deck
-5.74  Engineering Deck

[Kaiser Kirk]

Key to deciding to scrap or keep the 1897 Tortoise Class is  what sort of investment is needed in 1921 to make it a viable
rear area vessel.

So I had to explore what it would take to refurbish the ship.

For 3.47 BP, I can get ~10 years of a ship that would take a substantial vessel to 'kill'.
As an 1897 laydown, and a 1899 completion, getting more than 30 years out of the hull is likely unreasonable.
I'd actually rather spend 7 for one of those Norse CDS for the same role but 20 years.
BUT...3.5 x 2 is more 'doable' than 7 x 2 right now.

Tortoise, Parthia Predreadnaught laid down 1897 (Engine 1921)

Displacement:
   11,423 t light; 12,147 t standard; 13,090 t normal; 13,844 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (360.89 ft / 354.33 ft) x 85.30 ft x (24.61 / 25.78 ft)
   (110.00 m / 108.00 m) x 26.00 m  x (7.50 / 7.86 m)

Armament:
      4 - 11.81" / 300 mm 41.5 cal guns - 870.83lbs / 395.00kg shells, 130 per gun
     Breech loading guns in turret on barbette mounts, 1912 Model
     2 x Twin mounts on centreline ends, evenly spread
      12 - 7.09" / 180 mm 43.0 cal guns - 187.39lbs / 85.00kg shells, 145 per gun
     Breech loading guns in casemate mounts, 1913 Model
     10 x Single mounts on sides, forward evenly spread
      4 hull mounts in casemates- Limited use in all but light seas
     2 x Single mounts on sides, aft deck centre
      2 hull mounts in casemates- Limited use in all but light seas
      6 - 3.54" / 90.0 mm 50.0 cal guns - 24.25lbs / 11.00kg shells, 300 per gun
     Anti-air guns in deck and hoist mounts, 1911 Model
     2 x Single mounts on centreline ends, evenly spread
      2 raised mounts
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
      16 - 0.59" / 15.0 mm 60.0 cal guns - 0.11lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1918 Model
     8 x Twin mounts on sides, evenly spread
      8 double raised mounts
      Weight of broadside 5,879 lbs / 2,667 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12.6" / 320 mm   212.60 ft / 64.80 m   9.84 ft / 3.00 m
   Ends:   3.94" / 100 mm   141.70 ft / 43.19 m   9.84 ft / 3.00 m
   Upper:   8.27" / 210 mm   212.60 ft / 64.80 m   8.20 ft / 2.50 m
     Main Belt covers 92 % of normal length

   - Hull void:
      0.00" / 0 mm     0.00 ft / 0.00 m   0.00 ft / 0.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   12.8" / 325 mm   6.50" / 165 mm      12.6" / 320 mm
   2nd:   8.27" / 210 mm   1.38" / 35 mm      1.38" / 35 mm
   3rd:   0.79" / 20 mm   0.79" / 20 mm      0.79" / 20 mm
   4th:   0.31" / 8 mm         -               -

   - Protected deck - multiple decks:
   For and Aft decks: 4.13" / 105 mm
   Forecastle: 1.57" / 40 mm  Quarter deck: 1.57" / 40 mm

   - Conning towers: Forward 12.60" / 320 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 4 shafts, 22,133 shp / 16,511 Kw = 20.00 kts
   Range 6,048nm at 14.00 kts
   Bunker at max displacement = 1,697 tons

Complement:
   611 - 795

Cost:
   £0.890 million / $3.561 million

Distribution of weights at normal displacement:
   Armament: 862 tons, 6.6 %
      - Guns: 862 tons, 6.6 %
   Armour: 4,792 tons, 36.6 %
      - Belts: 2,190 tons, 16.7 %
      - Armament: 968 tons, 7.4 %
      - Armour Deck: 1,483 tons, 11.3 %
      - Conning Tower: 151 tons, 1.2 %
   Machinery: 762 tons, 5.8 %
   Hull, fittings & equipment: 4,022 tons, 30.7 %
   Fuel, ammunition & stores: 1,667 tons, 12.7 %
   Miscellaneous weights: 984 tons, 7.5 %
      - Hull below water: 390 tons
      - Hull void weights: 110 tons
      - Hull above water: 237 tons
      - On freeboard deck: 105 tons
      - Above deck: 142 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     25,941 lbs / 11,767 Kg = 31.5 x 11.8 " / 300 mm shells or 4.0 torpedoes
   Stability (Unstable if below 1.00): 1.49
   Metacentric height 7.8 ft / 2.4 m
   Roll period: 12.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 53 %
         - Recoil effect (Restricted arc if above 1.00): 0.22
   Seaboat quality  (Average = 1.00): 1.05

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.616 / 0.622
   Length to Beam Ratio: 4.15 : 1
   'Natural speed' for length: 18.82 kts
   Power going to wave formation at top speed: 61 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 15.00 degrees
   Stern overhang: -6.56 ft / -2.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  17.95 ft / 5.47 m,  16.31 ft / 4.97 m
      - Forward deck:   20.00 %,  16.31 ft / 4.97 m,  14.67 ft / 4.47 m
      - Aft deck:   40.00 %,  14.67 ft / 4.47 m,  14.67 ft / 4.47 m
      - Quarter deck:   20.00 %,  14.67 ft / 4.47 m,  16.31 ft / 4.97 m
      - Average freeboard:      15.45 ft / 4.71 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 53.3 %
      - Above water (accommodation/working, high = better): 104.5 %
   Waterplane Area: 22,438 Square feet or 2,085 Square metres
   Displacement factor (Displacement / loading): 119 %
   Structure weight / hull surface area: 148 lbs/sq ft or 725 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.97
      - Longitudinal: 3.17
      - Overall: 1.10
   Excellent machinery, storage, compartmentation space
   Adequate accommodation and workspace room

The Tortoise and Turtle were names for slow, armored terrapins.

The rebuild is intended to allow them to serve as Coast Defense or 'Escort' Armored cruisers.

The Byzantine 345mm ships are a concern, as these would fare very poorly, but in most other areas they could be successful.

If forced into offensive use, a nighttime battle is actually preferred, trying to close the range to where the old guns could be used to good effect.

The 300L41 was designed as a replacement for the 345L45 and 305L40, with design work completing in 1912, just in time for the expected 1913 refits.
However in 1913, the Expeditionary forces started siphoning the spare money up.

The 300L41.5 is only slightly better than the 305L40.
Commonality of guns, and the much improved turret designs of the later tech would be the reasons for the change

For the 345L35 though, the 300L41.5 is a great upgrade.
Penetration improves by 25% at range, as the much faster longer shell carries KE better.

The 180mm casements are retained, but the newer 180L43 in the +22% casements are fitted.
It is the hope of the planning section that for longer ranges coming into play, the 180mm can be used for spotting fire, creating 'ladders' and allowing the 300L41.5 to fire for effect.




Intended for more "Rear area" use,
the refit cost is to be kept down.

Old Engines : 1878
Old Bunker : 1735
Old Main Mag : 265


Speed : Increased to the battleline 20knots
Turboelectric Turbines : 762t
Turbogenerator : 191
Bunker : 1697t

Gun + Mount : 285+577 = 862

Gun rotating armor : 496

magazines : 462

Armor decks :
15mm is laminated onto all 4 decks, providing +12mm armor.

Fore : 25+15, eff 37mm
Upper Citadel : 25+15, eff 37mm
Main Armor : 55 + 15, eff 67mm
(Total vs. Vert pen : 37/2 + 67 = 86mm)
(Main belt + 320 +
Aft : 25+15, eff 37mm

Total : +437tons of armor

Miscellaneous Weight :
87t  : Fire Control
25t  : LR Radio
25t  : Searchlight tower

25t  : Hulesmeyer
25t  : War Tuba
50t  : 2x Kite Balloons
5t : Paravanes

12t   : CO2 Air Compressor AC
25t   : Enhanced Fire Ext.
200t : Marine Barracks

36t   : Torpedo flat, stern under armor. 2x TT 21" each broadside, 12x 21" TT
191t : Turbogenerator
108t : Torpedo Nets
25t : Enhanced Pumps
30t : 2 Enhanced Hydrophone stations.

+4.47 Weather deck, Top of upper belt, upper 25mm armor deck
+1.97 Third Deck, Top of main belt, crown of protective deck 40mm
-0.53 Second Deck, edge of protective deck
-1.03 Bottom of Main Belt
-3.05 First Deck
-7.05 Engineering Deck


COSTS :
Base : $2.3
Arm + Machine : 762+862 : $3.248 , 1.624 BP

Armor & Func Wt : 496+437+ (984-110) : 1807
$1.807, 1.807

Hull : N/A

Fuel, Ammo, NF Wt : 1697+ 462+ 110= 2229
$1.115

SubTotal :
$8.47, 3.467 BP

Total : $ 8.47, 3.47 BP

[eltf177]

Were the original stats of the Tortoise-class ever posted?

[Kaiser Kirk]

https://www.navalism.org/index.php/topic,7042.0.html

Yep, 2nd Entry in the Parthian Battleships.

I have started wondering if instead of Marines embarked where
all the stokers once bunked, , an Amphibious Command Center might be useful.

[eltf177]

Thanks.

[Kaiser Kirk]

Hmm, since it's 1921, I could redo the math for the Sparbara as the engines will be ~30 tons cheaper....or be lazy. I like lazy.

For comparison with the Tortoise, I've tinkered with a bunch of small CDS designs.

This is more the upper end, but gives the idea.  The lower end is 6500 tons, which is probably more reasonable
One of these at Khasab (5.5m draft) , one in the shallows at Medan, one up river at Palembang, one upriver at Sofala, one in the Orinoco delta.
all at narrow points where opposing vessels would need to pass.

Basically any ship that could beat it would not be able to reach it. Add in that attackers won't have maps of the local depths, and I expect they would tie up substantial opposing resources.
Which means DDs or MTBS have to go searching those areas, which I can counter. Plus a short ship with turbo-electric, TDS, and torpedo nets would be a hard target.

Per Jefgte's mantra, I put it at 20knots, so in a pinch it can tag along with the battle line.


The layout is Dunkerque with the main battery all forward, and secondary guns on centerline aft.
With the turbo electric, the ship could even back at full speed while firing forward. Which would be an interesting maneuver.

Still at ~9000 tons, I can build 1 for the same 'cost' as refitting the two elderly predreads.
So I'll build these later....but figured I'd put this up.

GateKeeper II, Parthian Litorral Raider laid down 1921

Displacement:
   8,900 t light; 9,690 t standard; 10,030 t normal; 10,302 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (393.70 ft / 387.14 ft) x 70.87 ft (Bulges 77.43 ft) x (18.04 / 18.50 ft)
   (120.00 m / 118.00 m) x 21.60 m (Bulges 23.60 m)  x (5.50 / 5.64 m)

Armament:
      6 - 10.04" / 255 mm 47.0 cal guns - 599.66lbs / 272.00kg shells, 200 per gun
     Breech loading guns in turret on barbette mounts, 1921 Model
     2 x 3-gun mounts on centreline, forward evenly spread
      1 raised mount
      8 - 4.72" / 120 mm 43.0 cal guns - 55.12lbs / 25.00kg shells, 250 per gun
     Quick firing guns in deck and hoist mounts, 1921 Model
     4 x 2-gun mounts on side ends, evenly spread
      6 - 4.72" / 120 mm 43.0 cal guns - 55.12lbs / 25.00kg shells, 350 per gun
     Breech loading guns in deck and hoist mounts, 1921 Model
     2 x 2-gun mounts on centreline, aft evenly spread
      1 raised mount
     1 x 2-gun mount on centreline, forward deck aft
      1 double raised mount
      8 - 3.54" / 90.0 mm 50.0 cal guns - 24.25lbs / 11.00kg shells, 500 per gun
     Anti-air guns in deck and hoist mounts, 1921 Model
     4 x 2-gun mounts on side ends, evenly spread
      4 raised mounts
      16 - 0.59" / 15.0 mm 60.0 cal guns - 0.11lbs / 0.05kg shells, 10,000 per gun
     Breech loading guns in deck mounts, 1921 Model
     8 x Twin mounts on sides, evenly spread
      8 double raised mounts
      Weight of broadside 4,565 lbs / 2,071 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7.87" / 200 mm   251.64 ft / 76.70 m   10.66 ft / 3.25 m
   Ends:   1.38" / 35 mm   135.47 ft / 41.29 m   10.66 ft / 3.25 m
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.50" / 38 mm   251.64 ft / 76.70 m   21.42 ft / 6.53 m
   Beam between torpedo bulkheads 46.59 ft / 14.20 m

   - Hull Bulges:
      0.35" / 9 mm   251.64 ft / 76.70 m   11.48 ft / 3.50 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   8.27" / 210 mm   4.72" / 120 mm      7.48" / 190 mm
   2nd:   2.95" / 75 mm   1.38" / 35 mm      2.95" / 75 mm
   3rd:   2.95" / 75 mm   1.38" / 35 mm      2.95" / 75 mm
   4th:   0.51" / 13 mm   0.24" / 6 mm            -

   - Armoured deck - multiple decks:
   For and Aft decks: 2.56" / 65 mm
   Forecastle: 1.38" / 35 mm  Quarter deck: 2.56" / 65 mm

   - Conning towers: Forward 7.87" / 200 mm, Aft 1.97" / 50 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Electric motors, 4 shafts, 18,091 shp / 13,496 Kw = 20.00 kts
   Range 4,960nm at 10.00 kts
   Bunker at max displacement = 612 tons (23% coal)

Complement:
   500 - 651

Cost:
   £2.026 million / $8.102 million

Distribution of weights at normal displacement:
   Armament: 1,003 tons, 10.0 %
      - Guns: 1,003 tons, 10.0 %
   Armour: 3,039 tons, 30.3 %
      - Belts: 1,025 tons, 10.2 %
      - Torpedo bulkhead: 298 tons, 3.0 %
      - Bulges: 38 tons, 0.4 %
      - Armament: 617 tons, 6.2 %
      - Armour Deck: 961 tons, 9.6 %
      - Conning Towers: 99 tons, 1.0 %
   Machinery: 636 tons, 6.3 %
   Hull, fittings & equipment: 3,511 tons, 35.0 %
   Fuel, ammunition & stores: 1,129 tons, 11.3 %
   Miscellaneous weights: 711 tons, 7.1 %
      - Hull below water: 317 tons
      - Bulge void weights: 65 tons
      - Hull above water: 103 tons
      - On freeboard deck: 75 tons
      - Above deck: 151 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     16,340 lbs / 7,412 Kg = 32.3 x 10.0 " / 255 mm shells or 3.8 torpedoes
   Stability (Unstable if below 1.00): 1.35
   Metacentric height 5.1 ft / 1.5 m
   Roll period: 14.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 51 %
         - Recoil effect (Restricted arc if above 1.00): 0.37
   Seaboat quality  (Average = 1.00): 1.01

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.649 / 0.650
   Length to Beam Ratio: 5.00 : 1
   'Natural speed' for length: 19.68 kts
   Power going to wave formation at top speed: 55 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 15.00 degrees
   Stern overhang: -3.28 ft / -1.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  18.04 ft / 5.50 m,  15.58 ft / 4.75 m
      - Forward deck:   35.00 %,  15.58 ft / 4.75 m,  13.12 ft / 4.00 m
      - Aft deck:   30.00 %,  13.12 ft / 4.00 m,  13.12 ft / 4.00 m
      - Quarter deck:   15.00 %,  13.12 ft / 4.00 m,  14.11 ft / 4.30 m
      - Average freeboard:      14.32 ft / 4.36 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 98.9 %
      - Above water (accommodation/working, high = better): 110.3 %
   Waterplane Area: 20,998 Square feet or 1,951 Square metres
   Displacement factor (Displacement / loading): 114 %
   Structure weight / hull surface area: 143 lbs/sq ft or 697 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.93
      - Longitudinal: 1.93
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Adequate accommodation and workspace room

Armor :
One deck level is unarmored
the Main belt covers from 1.25 to -2m
the TDS is the 1m deep bulge below the belt, and then 5m deep interior bulge backed by laminated 2x19mm.
This gives a 6m deep expansion space.

A torpedo net is also fitted.
The torpedo defenses include
electric drive and a 5:1 LB,
resulting in an extradinarily
manueverable vessel.



90t Construction Reserve

Engines :
25% coal (or wood) fired boilers
provide nearly 3,000shp and manage 12.25 knots alone.

The oil fired engines manage
roughly 16.75 knots on their own.

The electric drive allows range to be stretched 15%.



101t   FC
25t     LR Radio
25t     Searchlight Tower

50t     2x Kite Balloon
25t     Enhanced Fire Suppression

9t       CO2 A/C
25t     Enhanced Fire Suppression
64t     Marine Squad
5t       Paravanes

25t     Enhanced Pumps
118t   Torpedo Nets
159t   TurboGenerators
15t     Enhanced Hydrophones

Decks :
4.00    Weatherdeck
1.25m  Armor Deck, top belt, TDS
-1.25m 1st Deck
            -2.00m  Lower Belt
-4.5    Engineering
-5.28 Double Bottom
[/quote

[The Rock Doctor]

Predreads can work in open waters but they won't be nearly as suitable for a riverine environment.  It might be worth considering.

[Jefgte]

...Per Jefgte's mantra, I put it at 20knots, so in a pinch it can tag along with the battle line...

Following Parthian BBs is good, but maneuvering freely around battleships is even better.
=> Stand in front of enemy cruisers or torpedo boat attacks.

Byzantine BBs are 21kts, colonial BBs (ex PDN) 22 to 23kts, cruisers or AGBs are (or will be) 24kts minimum, 27kts if possible.
(The 21kts cruisers will be scrapped).

[Kaiser Kirk]

I agree with Jefgte's logic.

In this case, the vessels are supposed to operate solo or in pairs as leaders of local task forces.

If they were meant as a 'close escort' I would indeed be looking for +3 knots over the battlewagons.

The provision of 20knots is just so that if I need to press them into service with the main fleet,
they can, and keep up in maneuvers / sprints. 

[Kaiser Kirk]

Next up, the update of the two 1904 Protected Cruisers.
There's some confusion in my naming system, these are either Series II or Series III in my starting PCs.

Anyhow, increasing it's speed to 28knots requires slightly modifying the bow height - the old bow is flat, so I need to raise it 1m.
As long as it's <= 1.5m from the foredeck, I figure guns can fire flat over it.
That adds a bit of cost, but worth it to get seakeeping >1.0.

What is interesting is the preceeding vessel was able to hit 29knots, with 1.05 seakeeping.
The difference seems to be the turbogenerator acts as ballast.  This ship started with turbines and so does not
need the turbogenerator, so lacks 450 tons of ballast...

On the otherhand, that frees up more weight to laminate on as new protective deck armor. While not as good as a brand new deck, it pushes the armor into the decent range.

Cost Basis :
A)  20% of original cost
B)  Armament and machinery , BP cost = (tonnage/1000); $ cost = twice the BP cost.
C ) Armor and functional miscellaneous weight, BP cost = (tonnage/1000); $ cost is equal to BP cost.
D)  Hull, fittings & equipment, No BP cost; $ cost is equal to (tonnage/5000)
E)  Fuel, ammunition & stores; non-functional miscellaneous weight  , No BP cost; $ cost is (tonnage/2000).

A) Original Cost $6* 0.2 = $1.20

B) Engines and Armanent
New Turbines engines 100% oil : 1546
165L45 replaced with 180L43
60L50 replaced with 90L50 AA
15L60 added.

New guns and mounts : 481.23
Subtotal : 2027.23
$4.054, 2.027 BP

C) Armor and Functional Misc Wt
Turret & mount armor : 160.2
Additional strake belt armor, laminated deck armor : 465
Other Functional Misc Wt  : 366

Subtotal : 991.2
$0.991, 0.991 BP

D)Hull fittings & equip :
2026/5000 = $0.4052

E) Fuel, Ammunition
Fuel : 1885   ~27days at cruising spd
Mag : 191

Subtotal : 2076/2000 = $1.038


A) $1.20
B) $4.054, 2.027 BP
C) $0.991, 0.991 BP
D)  $0.4052
E)  $1.038

SubTotal :
$7.6882
3.018 BP

Total Cost
$7.69,
3.02 BP

PC-3, Parthia Protected Cruiser Series II laid down 1904 (Engine 1921)

Displacement:
   5,933 t light; 6,271 t standard; 7,318 t normal; 8,155 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (492.13 ft / 475.72 ft) x 49.21 ft x (21.33 / 23.18 ft)
   (150.00 m / 145.00 m) x 15.00 m  x (6.50 / 7.07 m)

Armament:
      10 - 7.09" / 180 mm 43.0 cal guns - 187.39lbs / 85.00kg shells, 140 per gun
     Breech loading guns in deck and hoist mounts, 1913 Model
     4 x Single mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
     6 x Single mounts on sides, evenly spread
      2 raised mounts
      6 - 3.54" / 90.0 mm 50.0 cal guns - 24.25lbs / 11.00kg shells, 500 per gun
     Anti-air guns in deck and hoist mounts, 1911 Model
     4 x Single mounts on side ends, evenly spread
      4 raised mounts
     2 x Single mounts on sides amidships
      2 double raised mounts
      16 - 0.59" / 15.0 mm 60.0 cal guns - 0.11lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1917 Model
     8 x Twin mounts on sides, evenly spread
      8 double raised mounts
      Weight of broadside 2,021 lbs / 917 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   2.56" / 65 mm   428.15 ft / 130.50 m   12.01 ft / 3.66 m
   Ends:   Unarmoured
     Main Belt covers 138 % of normal length

   - Hull void:
      0.00" / 0 mm     0.00 ft / 0.00 m   0.00 ft / 0.00 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   2.56" / 65 mm   1.57" / 40 mm      1.57" / 40 mm
   2nd:   0.31" / 8 mm         -               -
   3rd:   0.31" / 8 mm         -               -

   - Protected deck - single deck:
   For and Aft decks: 2.56" / 65 mm
   Forecastle: 2.56" / 65 mm  Quarter deck: 2.56" / 65 mm

   - Conning towers: Forward 3.54" / 90 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 44,884 shp / 33,484 Kw = 28.00 kts
   Range 10,610nm at 14.00 kts
   Bunker at max displacement = 1,885 tons

Complement:
   395 - 514

Cost:
   £0.596 million / $2.384 million

Distribution of weights at normal displacement:
   Armament: 481 tons, 6.6 %
      - Guns: 481 tons, 6.6 %
   Armour: 1,454 tons, 19.9 %
      - Belts: 513 tons, 7.0 %
      - Armament: 157 tons, 2.1 %
      - Armour Deck: 755 tons, 10.3 %
      - Conning Tower: 29 tons, 0.4 %
   Machinery: 1,546 tons, 21.1 %
   Hull, fittings & equipment: 1,990 tons, 27.2 %
   Fuel, ammunition & stores: 1,385 tons, 18.9 %
   Miscellaneous weights: 462 tons, 6.3 %
      - Hull below water: 76 tons
      - Hull void weights: 60 tons
      - Hull above water: 185 tons
      - On freeboard deck: 42 tons
      - Above deck: 99 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     7,028 lbs / 3,188 Kg = 39.5 x 7.1 " / 180 mm shells or 1.3 torpedoes
   Stability (Unstable if below 1.00): 1.06
   Metacentric height 1.9 ft / 0.6 m
   Roll period: 14.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.98
   Seaboat quality  (Average = 1.00): 1.01

Hull form characteristics:
   Hull has rise forward of midbreak,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.513 / 0.526
   Length to Beam Ratio: 9.67 : 1
   'Natural speed' for length: 21.81 kts
   Power going to wave formation at top speed: 56 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 12.00 degrees
   Stern overhang: 9.84 ft / 3.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   5.00 %,  23.82 ft / 7.26 m,  22.18 ft / 6.76 m
      - Forward deck:   32.00 %,  22.18 ft / 6.76 m,  20.54 ft / 6.26 m
      - Aft deck:   58.00 %,  12.34 ft / 3.76 m,  12.34 ft / 3.76 m
      - Quarter deck:   5.00 %,  12.34 ft / 3.76 m,  12.34 ft / 3.76 m
      - Average freeboard:      15.75 ft / 4.80 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 95.2 %
      - Above water (accommodation/working, high = better): 118.3 %
   Waterplane Area: 15,785 Square feet or 1,467 Square metres
   Displacement factor (Displacement / loading): 110 %
   Structure weight / hull surface area: 85 lbs/sq ft or 413 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.86
      - Longitudinal: 1.41
      - Overall: 0.91
   Caution: Hull subject to strain in open-sea
   Adequate machinery, storage, compartmentation space
   Adequate accommodation and workspace room

Laid down in 1904, completed 1905,
the vessel is to be completely refurbished in 1921.

Replacement turbines, a new main battery, laminated additional armor.

Old Engine : 2576
Old Bunker :1885
Old belt : 512
Old deck : 290

New Engine : 1546
New Bunker : 1885

Laminate +40mm (+32mm) on protective deck & slopes
additional belt : (under deck)
additional deck : 465

New Main Battery :436
New Armor : 152
Revolving wt/mount : 58.3

New secondary suite : 45.23
New Armor : 5.2

Magazines Wt : 191

Reconfigure bow - raise by 1m, forecastle by .5
Hull, fittings & equipment : 2026t

Miscellanous weight : 426t
60t construction reserve

49t FC
25t LR radio
25t Searchlight tower (NF)

6t CO2 Compressor AC
36t  4TT3 TT 21"

160t - Provisions for 160mines on 2nd deck, aft ports for dropping
25t - Enhanced fire extinguishers

25t - enhanced pumps
15t - Enhanced hydrophones
36t - spare torpedoes

[The Rock Doctor]

My understanding from the Refurb rules is that you can remove or replace armor but not add to it.