Parthian Ship Designs 1913.0 onwards

[Kaiser Kirk]

Prologue :
Parthian Naval History.

Prior to the 1800s, the Parthian navy was limited. N7 Parthia has followed the Zorastorian stewardship principle, and so has far more forest cover than modern Iran, but much of this is smaller juniper.   As a result, great timbers for ships were from the Northwest, or imported. Either way, they were expensive.  The fleet was generally small but professional.

With the advent of steam, the maritime silk road from China became more direct and could be steamed throughout the year. This created a demand for maritime patrols.

Iron hulls and masts became used, and Parthia's limited timber was no longer a great issue. The need for maritime patrols could be met.

By 1870, the claiming of Oman gave them an excellent base at Muscat, and they had established squadrons along the Swahili Coast at Zanzibar and from Malacca to guard the trade routes.

The Zanzibar Squadron was tasked with combating piracy and the slave trade from the Swahili coast. The Bengali Squadron kept Parthia merchants safe in South China.

The home navy was wiped out when the Byzantines launched their offensive in  the 1875-1876 war, their fleet sailing through the new Suez canal to victory. On land, the Parthians were already engaged vs. the Horde when conflict with Byzantine reignited.  Much as the Parthians had been dominating the Horde with muzzleloading rifles, the advanced Byzantine breechloading rifles and new artillery meant the war was short and calamitous for the Parthians.

Commerce Raiding
After 1876, the Parthians went to a force of raiding cruisers, with many torpedo boats, and some slow heavily armored coastal defense ships.

In 1895-97 the Parthian-Rajasthan border flared into war again, and Parthia tried to seize Karachi.  The loss of several vessels to Rajasthan's coastal forts, torpedo boats and mines, combined with the discovery of trench warfare and machineguns meant the war stalemated. Appalled at the carnage for no gain, in the fall of 1896 Alexandros's father called off the offensives and negotiated a peace.

Wall of battle
With the obvious need for better armored ships, the Parthians reassessed their navy and decided they needed to emulate the Europeans and build a wall of battle. Battleships were laid down in 1897, 1900, and 1904.

Dreadnaught Era

Battleships in 1899, 1900 and 1904 were to be followed by more, but they expected they would always being playing "Catch up" with the other powers.

The European theorists concepts of all-big gun ships, and the advances in fire control meant that by investing in the new form of battlewagon, the Parthians could finally field a fleet which take the next war to the Byzantines, and fight it out in the narrow Red Sea.

For their first all-big-gun ship, the Gilgamesh, they designed ships which met the speed of their faster older BBs, had superior guns, and armor which could defeat their own guns at the ranges being used in 1906...it takes a great deal of armor to stop a 345mm shell fired from 3,000m, but the 420mm belt backed by the 65mm protective deck should do it. The following Enki class slimmed that down, but is not as well regarded.

Expansion Phase
For the past 6 years, they have invested heavily in fielding a strong battleline of first rate warships to support a battleline clash in the Red Sea, while cruisers roamed the sealanes conducting commerce warfare. 

The new needs have stressed the navy. The construction of 8 new cruisers, totaling over 40,000tons, has replaced plans to screen the fleet and produce new torpedo craft. Old cruisers, planned for scrapping, now are useful to supply the numbers the Parthian's far flung network of bases demand.

The 1912 Maelstrom screening cruisers have gone unbuilt in favor of the Varya and Sakra commerce cruisers, destroyer leaders and couriers.
The 1911 Spear II class destroyers, meant to replace the Javelins and Spear class also went unbuilt.

So, in 1913, the Parthians, taking quick lessons from the Sino-Nippon war, have concluded these missing vessels are needed.
However, while the cruiser was to have 120mm guns, and the destroyer 90mm, now they are toying with the idea of 165mm and 120mm guns.

[Kaiser Kirk]

So this is the Destroyer the Parthians are considering.
A 30knot version with 90mm guns is possible,
but the main goal here is heavy gun firepower to engage other destroyers at a distance from the fleet.
So the extra knot is not as useful as the guns.

The other option is less range, as the fuel oil is taking up considerable weight, but the Parthians want to be able to steam out, find the base they were going to is overrun, and go to a different one. With Parthian bases about 2000nm apart, that's a 4000nm range minimum. At 10knots, that is very doable.

The A/B/Z arrangement has 2 casements
With an 8.4m beam, I don't see how waist guns would fit, so I made them superstructure casement- like USS Omaha
So, according to SS it works :)
That gives 4x 120mm bearing forward, 4 on either beam, and just 1 aft.

Sea Eagle, Parthian Destroyer laid down 1913

Displacement:
   749 t light; 798 t standard; 894 t normal; 970 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (261.54 ft / 255.91 ft) x 27.23 ft x (10.66 / 11.31 ft)
   (79.72 m / 78.00 m) x 8.30 m  x (3.25 / 3.45 m)

Armament:
      3 - 4.72" / 120 mm 43.0 cal guns - 55.12lbs / 25.00kg shells, 210 per gun
     Quick firing guns in deck mounts, 1912 Model
     3 x Single mounts on centreline ends, majority forward
      1 raised mount - superfiring
      2 - 4.72" / 120 mm 43.0 cal guns - 55.12lbs / 25.00kg shells, 200 per gun
     Quick firing guns in casemate mounts, 1912 Model
     2 x Single mounts on sides, forward deck centre
      Weight of broadside 276 lbs / 125 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.31" / 8 mm   0.31" / 8 mm            -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 1 shaft, 18,860 shp / 14,070 Kw = 29.25 kts
   Range 3,600nm at 12.00 kts
   Bunker at max displacement = 172 tons

Complement:
   81 - 106

Cost:
   £0.111 million / $0.444 million

Distribution of weights at normal displacement:
   Armament: 43 tons, 4.8 %
      - Guns: 43 tons, 4.8 %
   Armour: 6 tons, 0.7 %
      - Armament: 6 tons, 0.7 %
   Machinery: 456 tons, 51.0 %
   Hull, fittings & equipment: 230 tons, 25.8 %
   Fuel, ammunition & stores: 145 tons, 16.2 %
   Miscellaneous weights: 13 tons, 1.5 %
      - On freeboard deck: 8 tons
      - Above deck: 5 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     255 lbs / 115 Kg = 4.8 x 4.7 " / 120 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.40
   Metacentric height 1.3 ft / 0.4 m
   Roll period: 10.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.44
   Seaboat quality  (Average = 1.00): 1.01

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.421 / 0.431
   Length to Beam Ratio: 9.40 : 1
   'Natural speed' for length: 16.00 kts
   Power going to wave formation at top speed: 69 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 22.00 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 %,  13.94 ft / 4.25 m,  12.30 ft / 3.75 m
      - Forward deck:   30.00 %,  12.30 ft / 3.75 m,  12.30 ft / 3.75 m
      - Aft deck:   35.00 %,  12.30 ft / 3.75 m,  12.30 ft / 3.75 m
      - Quarter deck:   15.00 %,  12.30 ft / 3.75 m,  12.30 ft / 3.75 m
      - Average freeboard:      12.43 ft / 3.79 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 179.4 %
      - Above water (accommodation/working, high = better): 119.3 %
   Waterplane Area: 4,123 Square feet or 383 Square metres
   Displacement factor (Displacement / loading): 56 %
   Structure weight / hull surface area: 28 lbs/sq ft or 139 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 2.86
      - Overall: 0.59
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room


This Destroyer was conceieved as an interceptor/chaser for enemy torpedo craft.

Mounting A/B forward and 2 waist guns which bear forward, that give 4  guns.

Range @29.2knts: 289
Range @18kts : 1270
Range @12kts : 3600
Range @10kts : 5450


Miscellaneous Wieght :
5t Fire Control
0t - 100nm SR Radio

8t - 2T2 Torpedoes 18"

[Kaiser Kirk]

This is the first of two versions of an updated Maelstrom concept.
They've run from 3800t to 5250t,

The 55mm belt, backed by a 30mm protective deck should be sufficient against destroyer common rounds,
But the Battle of Dakar kinda pointed out a 50mm belt was insufficient for the ranges currently in use.
So the 2nd version is the 5250 with a stronger belt.


....and I figured out I never updated the notes section for those ships...

[Kaiser Kirk]

So there's a flaw with having files on 3 different computers and a USB stick called "where did I save that ship".

The SC-6 Ranger Class was meant as an alternative to the Maelstrom series I had previously posted, but will likely share the Maelstrom name.
These are "tight" designs, with narrower and deeper hulls than I would have previously done.

Again, the concepts of forward fire, and using casements (which are within the hull/superstructure frame, so need less width and structural support) are important.
These ships are to go attack and then chase in proximity to the battleline.

There are 2 different designs,
* 4000ton, 29knot, good seakeeping, 60mm belt.
* 5000ton, 29knot, good seakeeping , 100mm belt+40mm protective deck

After running the Battle of Dakar, I realized the 60mm belt with nothing behind it might be fine for fighting destroyers, but it was inadequate for fighting other cruisers at current ranges.
We really forget that at 6k yards, even a 100mm gun has reasonable penetration.  I'm inclined to think the extra 25% tonnage is 'worth it'.

Ready Cruiser 1

SC-6A Ranger, Parthia Scout Cruiser laid down 1913

Displacement:
   4,000 t light; 4,221 t standard; 4,712 t normal; 5,104 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (393.70 ft / 387.14 ft) x 40.19 ft x (21.33 / 22.65 ft)
   (120.00 m / 118.00 m) x 12.25 m  x (6.50 / 6.90 m)

Armament:
      4 - 6.50" / 165 mm 45.0 cal guns - 138.89lbs / 63.00kg shells, 200 per gun
     Quick firing guns in deck and hoist mounts, 1905 Model
     4 x Single mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      4 - 6.50" / 165 mm 45.0 cal guns - 138.89lbs / 63.00kg shells, 160 per gun
     Quick firing guns in casemate mounts, 1907 Model
     4 x Single mounts on sides, forward evenly spread
      2 hull mounts in casemates- Limited use in heavy seas
      4 - 3.54" / 90.0 mm 50.0 cal guns - 24.25lbs / 11.00kg shells, 300 per gun
     Breech loading guns in deck mounts, 1911 Model
     4 x Single mounts on side ends, evenly spread
      4 double raised mounts
      Weight of broadside 1,208 lbs / 548 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   2.36" / 60 mm   340.68 ft / 103.84 m   10.17 ft / 3.10 m
   Ends:   Unarmoured
     Main Belt covers 135 % 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:   1.97" / 50 mm   0.98" / 25 mm      0.98" / 25 mm
   2nd:   0.31" / 8 mm         -               -
   3rd:   0.31" / 8 mm         -               -

   - Armoured deck - single deck:
   For and Aft decks: 0.98" / 25 mm
   Forecastle: 0.79" / 20 mm  Quarter deck: 0.79" / 20 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 3 shafts, 43,265 shp / 32,276 Kw = 29.00 kts
   Range 6,820nm at 12.00 kts
   Bunker at max displacement = 883 tons

Complement:
   283 - 369

Cost:
   £0.502 million / $2.008 million

Distribution of weights at normal displacement:
   Armament: 256 tons, 5.4 %
      - Guns: 256 tons, 5.4 %
   Armour: 550 tons, 11.7 %
      - Belts: 319 tons, 6.8 %
      - Armament: 42 tons, 0.9 %
      - Armour Deck: 189 tons, 4.0 %
   Machinery: 1,692 tons, 35.9 %
   Hull, fittings & equipment: 1,339 tons, 28.4 %
   Fuel, ammunition & stores: 712 tons, 15.1 %
   Miscellaneous weights: 163 tons, 3.5 %
      - Hull void weights: 25 tons
      - On freeboard deck: 87 tons
      - Above deck: 51 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     2,621 lbs / 1,189 Kg = 19.1 x 6.5 " / 165 mm shells or 0.6 torpedoes
   Stability (Unstable if below 1.00): 1.17
   Metacentric height 1.7 ft / 0.5 m
   Roll period: 12.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 51 %
         - Recoil effect (Restricted arc if above 1.00): 0.95
   Seaboat quality  (Average = 1.00): 1.21

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.497 / 0.507
   Length to Beam Ratio: 9.63 : 1
   'Natural speed' for length: 19.68 kts
   Power going to wave formation at top speed: 62 %
   Trim (Max stability = 0, Max steadiness = 100): 42
   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:   7.00 %,  19.52 ft / 5.95 m,  18.70 ft / 5.70 m
      - Forward deck:   45.00 %,  18.70 ft / 5.70 m,  16.24 ft / 4.95 m
      - Aft deck:   43.00 %,  16.24 ft / 4.95 m,  16.24 ft / 4.95 m
      - Quarter deck:   5.00 %,  16.24 ft / 4.95 m,  17.22 ft / 5.25 m
      - Average freeboard:      17.01 ft / 5.19 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 133.9 %
      - Above water (accommodation/working, high = better): 117.4 %
   Waterplane Area: 10,339 Square feet or 960 Square metres
   Displacement factor (Displacement / loading): 96 %
   Structure weight / hull surface area: 69 lbs/sq ft or 335 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.78
      - Longitudinal: 3.10
      - Overall: 0.90
   Caution: Hull subject to strain in open-sea
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Good seaboat, rides out heavy weather easily

In an effort to maximize forward firepower and be able to kill a Destroyer rapidly.

The armor is also intended to more fight older cruisers or destroyers, not a real cruiser.

The space for engineering takes slightly to much to make a protective deck work, so a belt + armor deck is fitted.

The cruiser uses double-stacked casements like USS Omaha.

While Omaha had both in the superstructure, one of these is in the hull, and one in the superstructure. While the lower is expected to be wet in heavy seas, the same weather that limits them should limit destroyers. Each casement gun has a separate compartment, with the ammo conveyor slanting down to feed it- preventing water from moving beyond the position.

487ts of fuel oil carried
21hr @ 29knts
46hr @ 24kts
14days at 14knts
23.6days at 12knt


Decks :
4.95 : Weather Deck
2.45 : Battery Deck, Armor deck
0.01 : Main deck
-0.65 : Lower edge armor belt.
-2.43 : 1st deck
-5.70 : Engineering.

Misc Wt.

25t AD - LR radio
26t AD - 1912 FC

25t OD - Hulsmeyer Device
25t OD - War Tuba
25t OD - Searchlight tower aft
12t OD - 2T2 Torpedoes (4x 3t)

[Kaiser Kirk]

Edit : Fixed the type and arrangement of the 2nd Guns, now 2 stacked casements like Omaha, rather than 4 up high.

Overall, the "F" version is far bigger, but also more robust with more Misc weight for future refits.

Ready Cruiser 2.b

SC-6 "F" Ranger, Parthian Cruiser laid down 1913

Displacement:
   4,998 t light; 5,244 t standard; 5,962 t normal; 6,536 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (424.87 ft / 419.95 ft) x 41.99 ft x (20.51 / 22.10 ft)
   (129.50 m / 128.00 m) x 12.80 m  x (6.25 / 6.74 m)

Armament:
      4 - 6.50" / 165 mm 45.0 cal guns - 138.89lbs / 63.00kg shells, 180 per gun
     Quick firing guns in deck and hoist mounts, 1912 Model
     4 x Single mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      4 - 6.50" / 165 mm 45.0 cal guns - 138.89lbs / 63.00kg shells, 180 per gun
     Quick firing guns in casemate mounts, 1911 Model
     4 x Single mounts on sides, forward evenly spread
      2 raised mounts
      8 - 0.59" / 15.0 mm 74.0 cal guns - 0.11lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1899 Model
     4 x Twin mounts on side ends, evenly spread
      4 double raised mounts
      4 - 3.54" / 90.0 mm 50.0 cal guns - 24.25lbs / 11.00kg shells, 250 per gun
     Anti-air guns in deck mounts, 1912 Model
     4 x Single mounts on side ends, evenly spread
      4 double raised mounts
      Weight of broadside 1,209 lbs / 548 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.94" / 100 mm   335.96 ft / 102.40 m   9.84 ft / 3.00 m
   Ends:   Unarmoured
     Main Belt covers 123 % 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:   3.94" / 100 mm   0.98" / 25 mm      3.94" / 100 mm
   2nd:   0.98" / 25 mm   0.98" / 25 mm      0.98" / 25 mm

   - Protected deck - single deck:
   For and Aft decks: 1.57" / 40 mm
   Forecastle: 0.79" / 20 mm  Quarter deck: 1.18" / 30 mm

   - Conning towers: Forward 3.94" / 100 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 49,527 shp / 36,947 Kw = 29.00 kts
   Range 8,800nm at 12.00 kts
   Bunker at max displacement = 1,291 tons

Complement:
   338 - 440

Cost:
   £0.578 million / $2.314 million

Distribution of weights at normal displacement:
   Armament: 260 tons, 4.4 %
      - Guns: 260 tons, 4.4 %
   Armour: 972 tons, 16.3 %
      - Belts: 519 tons, 8.7 %
      - Armament: 66 tons, 1.1 %
      - Armour Deck: 359 tons, 6.0 %
      - Conning Tower: 28 tons, 0.5 %
   Machinery: 1,941 tons, 32.6 %
   Hull, fittings & equipment: 1,618 tons, 27.1 %
   Fuel, ammunition & stores: 964 tons, 16.2 %
   Miscellaneous weights: 208 tons, 3.5 %
      - Hull below water: 10 tons
      - Hull void weights: 50 tons
      - On freeboard deck: 97 tons
      - Above deck: 51 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     4,201 lbs / 1,905 Kg = 30.6 x 6.5 " / 165 mm shells or 0.8 torpedoes
   Stability (Unstable if below 1.00): 1.17
   Metacentric height 1.8 ft / 0.6 m
   Roll period: 13.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.86
   Seaboat quality  (Average = 1.00): 1.22

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.577 / 0.587
   Length to Beam Ratio: 10.00 : 1
   'Natural speed' for length: 20.49 kts
   Power going to wave formation at top speed: 63 %
   Trim (Max stability = 0, Max steadiness = 100): 41
   Bow angle (Positive = bow angles forward): 12.00 degrees
   Stern overhang: -6.56 ft / -2.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   12.00 %,  20.73 ft / 6.32 m,  19.09 ft / 5.82 m
      - Forward deck:   45.00 %,  19.09 ft / 5.82 m,  17.45 ft / 5.32 m
      - Aft deck:   35.00 %,  17.45 ft / 5.32 m,  17.45 ft / 5.32 m
      - Quarter deck:   8.00 %,  17.45 ft / 5.32 m,  19.09 ft / 5.82 m
      - Average freeboard:      18.16 ft / 5.54 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 119.8 %
      - Above water (accommodation/working, high = better): 127.4 %
   Waterplane Area: 12,624 Square feet or 1,173 Square metres
   Displacement factor (Displacement / loading): 102 %
   Structure weight / hull surface area: 70 lbs/sq ft or 340 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.80
      - Longitudinal: 2.62
      - Overall: 0.90
   Caution: Hull subject to strain in open-sea
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Good seaboat, rides out heavy weather easily


The "F" Type aims to be more heavily armored,
adding a 40mm upper belt- believed proof against QF HE,
and a 25mm weather deck.
while moving the armor deck down to protective deck level.
This in turn means there is a 40mm slope behind the main belt.



Decks :
+5.32m   4th deck, 20mm Weather Deck, Top Upper Belt (3.99m ave)
+2.88m   3rd deck
                 +1.5m   Top main belt, bottom upper belt.
+0.44m  2nd deck,   30mm Protective armor deck Crown.
               -1.5m  Bottom Main belt
-2m       1st Deck, bottom of protective deck slope
-5.44m  Engineering Deck, Stores
-5.82m  Double bottom

Range :

1291t max oil
989 :  21days steaming +10%
302 : 5.6hrs at 29knts

Misc Wt :
50 - void Construction Reserve

26 AD- 1912 fire control
25 AD - Long range radio

25 OD - Hulsmeyer
25 OD - War Tuba
25 OD - Searchlight tower amidships
12  - 2t2 Torpedoes (4x3t)
10 - 'Windcatcher' evaporative cooling

10 BD- extra pumps

[snip]

On the F version, you have the second set of 165's set as AA guns.

[Kaiser Kirk]

On the F version, you have the second set of 165's set as AA guns.

oops, 2nd gun that's originally where the 90mms were.
At first I had the 165mms as wing mounts not casements, then I decided I really couldn't envision how that would fit and go the Omaha route.

Changing to QF from AA should save a little tonnage. Not much, but I'll take it.

[Kaiser Kirk]

Ok fixed the 2nd battery to what it should be.

[Kaiser Kirk]

...and then, because I can't help myself, I made the G version....argh it's an addiction.

SC-6 "G" Ranger, Parthian Cruiser laid down 1913

Displacement:
   4,998 t light; 5,244 t standard; 5,962 t normal; 6,536 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (424.87 ft / 419.95 ft) x 41.99 ft x (20.51 / 22.10 ft)
   (129.50 m / 128.00 m) x 12.80 m  x (6.25 / 6.74 m)

Armament:
      4 - 6.50" / 165 mm 45.0 cal guns - 138.23lbs / 62.70kg shells, 180 per gun
     Quick firing guns in deck and hoist mounts, 1904 Model
     4 x Single mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      4 - 6.50" / 165 mm 45.0 cal guns - 138.23lbs / 62.70kg shells, 180 per gun
     Quick firing guns in casemate mounts, 1904 Model
     4 x Single mounts on side ends, evenly spread
      2 hull mounts in casemates- Limited use in heavy seas
      8 - 0.59" / 15.0 mm 74.0 cal guns - 0.11lbs / 0.05kg shells, 5,000 per gun
     Machine guns in deck mounts, 1899 Model
     4 x Twin mounts on side ends, evenly spread
      4 double raised mounts
      4 - 3.54" / 90.0 mm 50.0 cal guns - 24.25lbs / 11.00kg shells, 250 per gun
     Anti-air guns in deck mounts, 1910 Model
     4 x Single mounts on side ends, evenly spread
      4 double raised mounts
      Weight of broadside 1,204 lbs / 546 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.94" / 100 mm   335.96 ft / 102.40 m   9.84 ft / 3.00 m
   Ends:   Unarmoured
     Main Belt covers 123 % 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:   3.94" / 100 mm   1.57" / 40 mm      3.94" / 100 mm
   2nd:   0.98" / 25 mm   0.98" / 25 mm      0.98" / 25 mm
   3rd:   0.31" / 8 mm         -               -
   4th:   0.31" / 8 mm         -               -

   - Protected deck - single deck:
   For and Aft decks: 1.57" / 40 mm
   Forecastle: 0.79" / 20 mm  Quarter deck: 1.18" / 30 mm

   - Conning towers: Forward 3.94" / 100 mm, Aft 0.00" / 0 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 49,527 shp / 36,947 Kw = 29.00 kts
   Range 8,800nm at 12.00 kts
   Bunker at max displacement = 1,291 tons

Complement:
   338 - 440

Cost:
   £0.578 million / $2.314 million

Distribution of weights at normal displacement:
   Armament: 260 tons, 4.4 %
      - Guns: 260 tons, 4.4 %
   Armour: 991 tons, 16.6 %
      - Belts: 519 tons, 8.7 %
      - Armament: 85 tons, 1.4 %
      - Armour Deck: 359 tons, 6.0 %
      - Conning Tower: 28 tons, 0.5 %
   Machinery: 1,941 tons, 32.6 %
   Hull, fittings & equipment: 1,599 tons, 26.8 %
   Fuel, ammunition & stores: 963 tons, 16.2 %
   Miscellaneous weights: 208 tons, 3.5 %
      - Hull below water: 10 tons
      - Hull void weights: 50 tons
      - On freeboard deck: 97 tons
      - Above deck: 51 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     4,194 lbs / 1,902 Kg = 30.6 x 6.5 " / 165 mm shells or 0.8 torpedoes
   Stability (Unstable if below 1.00): 1.17
   Metacentric height 1.8 ft / 0.6 m
   Roll period: 13.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.80
   Seaboat quality  (Average = 1.00): 1.23

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.577 / 0.587
   Length to Beam Ratio: 10.00 : 1
   'Natural speed' for length: 20.49 kts
   Power going to wave formation at top speed: 63 %
   Trim (Max stability = 0, Max steadiness = 100): 41
   Bow angle (Positive = bow angles forward): 12.00 degrees
   Stern overhang: -6.56 ft / -2.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   12.00 %,  20.73 ft / 6.32 m,  19.09 ft / 5.82 m
      - Forward deck:   45.00 %,  19.09 ft / 5.82 m,  17.45 ft / 5.32 m
      - Aft deck:   35.00 %,  17.45 ft / 5.32 m,  17.45 ft / 5.32 m
      - Quarter deck:   8.00 %,  17.45 ft / 5.32 m,  19.09 ft / 5.82 m
      - Average freeboard:      18.16 ft / 5.54 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 119.8 %
      - Above water (accommodation/working, high = better): 127.4 %
   Waterplane Area: 12,624 Square feet or 1,173 Square metres
   Displacement factor (Displacement / loading): 101 %
   Structure weight / hull surface area: 69 lbs/sq ft or 336 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.80
      - Longitudinal: 2.60
      - Overall: 0.90
   Caution: Hull subject to strain in open-sea
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Good seaboat, rides out heavy weather easily


The "G" Type aims
Follows on the more heavily armored "F".
while moving the armor deck down to protective deck level.
This in turn means there is a 40mm slope behind the main belt.

The foreward doublestacked casements are moved downwards, increasing stability.
The fact the lower guns are unusable in a heavy seaway is deemed acceptable, as combat in those situations is expected to be rare,
and the vessel is unlikely to be called on to stop a torpedo attack in heavy seas.

1899 165L45  1904 mounts
1886 Gardner hand cranked 15mm MGs are the 1899 mount.
1910 90L50 is in the Mk II 1910 mount.

Decks :
+5.32m   4th deck
+2.88m   3rd deck
                 +1.5m   Top main belt, .
+0.44m  2nd deck,   40mm Protective armor deck Crown.
               -1.5m  Bottom Main belt
-2m       1st Deck, bottom of protective deck slope
-5.44m  Engineering Deck, Stores
-5.82m  Double bottom

Range :

1291t max oil
989 :  21days steaming +10%
302 : 5.6hrs at 29knts


Misc Wt :
50 - void Construction Reserve

26 AD- 1912 fire control
25 AD - Long range radio

25 OD - Hulsmeyer
25 OD - War Tuba
25 OD - Searchlight tower amidships
12  - 2t2 Torpedoes (4x3t)
10 - 'Windcatcher' evaporative cooling

[Kaiser Kirk]

As I try to fill in the missing designs in my encyclopedia,
I have discovered that I 'necro'd' my earlier Parthian thread, and abandoned this one.

Edit : Ok, found the Ranger on page 11 of the other thread, so no need to repost it.

[Jefgte]

Armament:
      4 - 6.50" / 165 mm 45.0 cal guns - 138.23lbs / 62.70kg shells, 180 per gun
     Quick firing guns in deck and hoist mounts, 1904 Model
     4 x Single mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      4 - 6.50" / 165 mm 45.0 cal guns - 138.23lbs / 62.70kg shells, 180 per gun
     Quick firing guns in casemate mounts, 1904 Model
     4 x Single mounts on side ends, evenly spread
      2 hull mounts in casemates - Limited use in heavy seas

    Sure ?

[Kaiser Kirk]

The Maelstrom and Ranger both use casements to increase end- on fire.
The fact they can't be used in heavy seas is accepted because :
1) the chance of MTB/DD attack in heavy seas is low - not only does it rob them of speed, but in really heavy seas the torpedoes may breach the wave troughs
2) only effects the lowest guns, the rest of the battery will be operational.