Logi's Design Studies

[Logi]

Part of the plan to modernize the navy with modern ships that can do more than sail around the coast.

Biao Zhun She Ji 001, RRC Torpedo Boat laid down 1917 (Engine 1912)

Displacement:
   750 t light; 770 t standard; 851 t normal; 916 t full load

Dimensions: Length overall / water x beam x draught
   310.00 ft / 300.00 ft x 27.00 ft x 10.00 ft (normal load)
   94.49 m / 91.44 m x 8.23 m  x 3.05 m

Armament:
     2 - 2.95" / 75.0 mm guns in single mounts, 12.87lbs / 5.84kg shells, 1917 Model
     Quick firing guns in deck mounts
     on centreline ends, evenly spread
     4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1917 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 26 lbs / 12 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:   0.50" / 13 mm         -               -

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 2 shafts, 17,462 shp / 13,026 Kw = 30.00 kts
   Range 2,100nm at 12.00 kts
   Bunker at max displacement = 146 tons (100% coal)

Complement:
   78 - 102

Cost:
   £0.167 million / $0.668 million

Distribution of weights at normal displacement:
   Armament: 3 tons, 0.4 %
   Armour: 1 tons, 0.2 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 1 tons, 0.2 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 449 tons, 52.7 %
   Hull, fittings & equipment: 235 tons, 27.6 %
   Fuel, ammunition & stores: 101 tons, 11.9 %
   Miscellaneous weights: 62 tons, 7.3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     219 lbs / 99 Kg = 17.0 x 3.0 " / 75 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.25
   Metacentric height 1.0 ft / 0.3 m
   Roll period: 11.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.04
   Seaboat quality  (Average = 1.00): 1.24

Hull form characteristics:
   Hull has raised quarterdeck
   Block coefficient: 0.368
   Length to Beam Ratio: 11.11 : 1
   'Natural speed' for length: 17.32 kts
   Power going to wave formation at top speed: 62 %
   Trim (Max stability = 0, Max steadiness = 100): 57
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 2.72 ft / 0.83 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      20.00 ft / 6.10 m
      - Forecastle (20 %):   16.00 ft / 4.88 m
      - Mid (50 %):      13.00 ft / 3.96 m
      - Quarterdeck (15 %):   11.00 ft / 3.35 m (0.00 ft / 0.00 m before break)
      - Stern:      10.00 ft / 3.05 m
      - Average freeboard:   11.72 ft / 3.57 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 181.1 %
      - Above water (accommodation/working, high = better): 60.0 %
   Waterplane Area: 4,921 Square feet or 457 Square metres
   Displacement factor (Displacement / loading): 52 %
   Structure weight / hull surface area: 24 lbs/sq ft or 116 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.66
      - Overall: 0.56
   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

Misc Weight:
25t Fire Control
25t Long-Range Wireless
12t Torpedoes (12)

[sgdn]

i would say ditch the fire con as its not realy going to help much as with only 2 guns if the ship gets in to a gunfight its probably not looking to kill any way adding another gun or 2 would work better

my opinon valued at £0.02

[Jefgte]

- Stem:      20.00 ft / 6.10 m
      - Forecastle (20 %):   16.00 ft / 4.88 m
      - Mid (50 %):      13.00 ft / 3.96 m
      - Quarterdeck (15 %):   11.00 ft / 3.35 m (0.00 ft / 0.00 m before break)
      - Stern:      10.00 ft / 3.05 m
      - Average freeboard:   11.72 ft / 3.57 m

you could certainly decrease the freeboard & increase armament


;)

[The Rock Doctor]

Actually, it looks like the freeboard does need a bit of fixing forward of the quarterdeck.

[P3D]

Too much freeboard.
Even taking coal firing into account range is extremely short for a 30kts ship.

[Logi]

Well its still more than my oldies which have 2k nm at 8kts.
I was looking to get 1.00 seakeeping and somehow it increased. That quarterdeck freeboard somehow escaped my eyes.

I couldn't increase the range by much though. It now has a range of 228nm at 30 kts.

Biao Zhun She Ji 001, RRC Torpedo Boat laid down 1917 (Engine 1912)

Displacement:
   731 t light; 752 t standard; 852 t normal; 931 t full load

Dimensions: Length overall / water x beam x draught
   307.82 ft / 300.00 ft x 27.00 ft x 10.00 ft (normal load)
   93.82 m / 91.44 m x 8.23 m  x 3.05 m

Armament:
      3 - 2.95" / 75.0 mm guns in single mounts, 12.87lbs / 5.84kg shells, 1917 Model
     Quick firing guns in deck mounts
     on centreline, evenly spread
     Aft Main mounts separated by engine room
      4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1917 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 39 lbs / 18 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:   0.50" / 13 mm         -               -

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 2 shafts, 17,473 shp / 13,035 Kw = 30.00 kts
   Range 2,600nm at 12.00 kts
   Bunker at max displacement = 179 tons (100% coal)

Complement:
   78 - 102

Cost:
   £0.167 million / $0.670 million

Distribution of weights at normal displacement:
   Armament: 5 tons, 0.6 %
   Armour: 2 tons, 0.3 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 2 tons, 0.3 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 446 tons, 52.4 %
   Hull, fittings & equipment: 216 tons, 25.4 %
   Fuel, ammunition & stores: 121 tons, 14.2 %
   Miscellaneous weights: 62 tons, 7.3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     205 lbs / 93 Kg = 16.0 x 3.0 " / 75 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.20
   Metacentric height 1.0 ft / 0.3 m
   Roll period: 11.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.06
   Seaboat quality  (Average = 1.00): 1.00

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.368
   Length to Beam Ratio: 11.11 : 1
   'Natural speed' for length: 17.32 kts
   Power going to wave formation at top speed: 62 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   Bow angle (Positive = bow angles forward): 20.00 degrees
   Stern overhang: 2.72 ft / 0.83 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      14.00 ft / 4.27 m
      - Forecastle (20 %):   12.00 ft / 3.66 m
      - Mid (50 %):      11.00 ft / 3.35 m (9.00 ft / 2.74 m aft of break)
      - Quarterdeck (15 %):   9.00 ft / 2.74 m
      - Stern:      9.00 ft / 2.74 m
      - Average freeboard:   10.51 ft / 3.20 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 181.4 %
      - Above water (accommodation/working, high = better): 59.7 %
   Waterplane Area: 4,921 Square feet or 457 Square metres
   Displacement factor (Displacement / loading): 52 %
   Structure weight / hull surface area: 24 lbs/sq ft or 116 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.17
      - 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

EDIT: Had the mounts raised by accident.

[Logi]

A endeavor to reduce the battleship weight. (I saved 0.02 composite weight by arranging the guns nelson-style).

As a result of my cutting back on weight, the armor is fairly thinner than I would want and the speed quite a bit slower. However the firepower is quite high, so I suppose it would make for a pocket battleship. Still at 21k tons, its not as small as I would like it to be :-\

Its still a  significant improvement over Huang Hun and Li Ming in terms of firepower and armor. And yes, everything fits, abet very tightly. The forecastle and quarterdeck length is reduced as well as the length of the superstructure. (Less lifeboats or they have to be stacked high in racks - maybe attached to the side of the turrets ;) )

Ju Ren, RRC Pocket Battleship laid down 1917 (Engine 1912)

Displacement:
   20,994 t light; 22,658 t standard; 24,935 t normal; 26,757 t full load

Dimensions: Length overall / water x beam x draught
   550.00 ft / 550.00 ft x 90.00 ft x 27.00 ft (normal load)
   167.64 m / 167.64 m x 27.43 m  x 8.23 m

Armament:
     12 - 14.00" / 356 mm guns (3x4 guns), 1,650.00lbs / 748.43kg shells, 1917 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, all forward, 1 raised mount - superfiring
     12 - 5.51" / 140 mm guns (1x12 guns), 83.72lbs / 37.98kg shells, 1917 Model
     Quick firing guns in a deck mount with hoist
     on side aft
   Weight of broadside 20,805 lbs / 9,437 kg
   Shells per gun, main battery: 100

Armour:
  - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12.0" / 305 mm   300.00 ft / 91.44 m   13.00 ft / 3.96 m
   Ends:   3.00" / 76 mm   250.00 ft / 76.20 m   13.00 ft / 3.96 m
   Upper:   1.00" / 25 mm   550.00 ft / 167.64 m   5.00 ft / 1.52 m
     Main Belt covers 84 % of normal length
     Main belt does not fully cover magazines and engineering spaces

  - Torpedo Bulkhead:
      1.50" / 38 mm   300.00 ft / 91.44 m   30.00 ft / 9.14 m

  - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.0" / 330 mm   5.00" / 127 mm      8.00" / 203 mm
   2nd:   1.00" / 25 mm         -               -

  - Armour deck: 3.00" / 76 mm, Conning tower: 12.00" / 305 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 2 shafts, 27,040 shp / 20,172 Kw = 20.00 kts
   Range 8,000nm at 12.00 kts
   Bunker at max displacement = 4,098 tons (100% coal)

Complement:
   991 - 1,289

Cost:
   £4.973 million / $19.891 million

Distribution of weights at normal displacement:
   Armament: 2,184 tons, 8.8 %
   Armour: 6,802 tons, 27.3 %
      - Belts: 2,620 tons, 10.5 %
      - Torpedo bulkhead: 500 tons, 2.0 %
      - Armament: 1,351 tons, 5.4 %
      - Armour Deck: 2,110 tons, 8.5 %
      - Conning Tower: 221 tons, 0.9 %
   Machinery: 1,186 tons, 4.8 %
   Hull, fittings & equipment: 10,322 tons, 41.4 %
   Fuel, ammunition & stores: 3,942 tons, 15.8 %
   Miscellaneous weights: 500 tons, 2.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     25,163 lbs / 11,414 Kg = 18.3 x 14.0 " / 356 mm shells or 4.0 torpedoes
   Stability (Unstable if below 1.00): 1.17
   Metacentric height 5.7 ft / 1.7 m
   Roll period: 15.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.76
   Seaboat quality  (Average = 1.00): 1.06

Hull form characteristics:
   Hull has rise aft of midbreak
   Block coefficient: 0.653
   Length to Beam Ratio: 6.11 : 1
   'Natural speed' for length: 23.45 kts
   Power going to wave formation at top speed: 44 %
   Trim (Max stability = 0, Max steadiness = 100): 47
   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:      13.00 ft / 3.96 m
      - Forecastle (20 %):   12.00 ft / 3.66 m
      - Mid (50 %):      12.00 ft / 3.66 m (14.00 ft / 4.27 m aft of break)
      - Quarterdeck (5 %):   14.00 ft / 4.27 m
      - Stern:      14.00 ft / 4.27 m
      - Average freeboard:   13.08 ft / 3.99 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 108.0 %
      - Above water (accommodation/working, high = better): 96.5 %
   Waterplane Area: 38,024 Square feet or 3,533 Square metres
   Displacement factor (Displacement / loading): 92 %
   Structure weight / hull surface area: 210 lbs/sq ft or 1,026 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.42
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is adequate

[The Rock Doctor]

You have a warning about belt length to consider.  Also, the barbette armor is rather low.

I'm also a little puzzled by your freeboard arrangement.

On the other hand, it's a lot of firepower if it can be made to work.

[Logi]

Sorry I added the tds after the main belt so I forgot about that. The freeboard is a bit of a mess, but I'll fix it up. I'm walking on the edge here with the already thin armor and the 1.00 composite strength rating.

I fixed the freeboard and thickened parts of the turret armor. The result was a bump of 1k ton in light displacement.

Ju Ren, RRC Pocket Battleship laid down 1917 (Engine 1912)

Displacement:
   21,995 t light; 23,693 t standard; 26,620 t normal; 28,961 t full load

Dimensions: Length overall / water x beam x draught
   550.00 ft / 550.00 ft x 90.00 ft x 28.00 ft (normal load)
   167.64 m / 167.64 m x 27.43 m  x 8.53 m

Armament:
      12 - 14.00" / 356 mm guns (3x4 guns), 1,650.00lbs / 748.43kg shells, 1917 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, all forward, 1 raised mount - superfiring
      12 - 5.51" / 140 mm guns (1x12 guns), 83.72lbs / 37.97kg shells, 1917 Model
     Quick firing guns in a deck mount with hoist
     on side aft
   Weight of broadside 20,805 lbs / 9,437 kg
   Shells per gun, main battery: 100

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12.0" / 305 mm   380.00 ft / 115.82 m   13.00 ft / 3.96 m
   Ends:   3.00" / 76 mm   170.00 ft / 51.82 m   13.00 ft / 3.96 m
   Upper:   1.00" / 25 mm   550.00 ft / 167.64 m   5.00 ft / 1.52 m
     Main Belt covers 106 % of normal length

   - Torpedo Bulkhead:
      2.00" / 51 mm   380.00 ft / 115.82 m   31.00 ft / 9.45 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.0" / 330 mm   6.00" / 152 mm      10.0" / 254 mm
   2nd:   1.00" / 25 mm         -               -

   - Armour deck: 3.00" / 76 mm, Conning tower: 12.00" / 305 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 28,247 shp / 21,072 Kw = 20.00 kts
   Range 10,400nm at 12.00 kts
   Bunker at max displacement = 5,268 tons (90% coal)

Complement:
   1,041 - 1,354

Cost:
   £5.047 million / $20.187 million

Distribution of weights at normal displacement:
   Armament: 2,184 tons, 8.2 %
   Armour: 7,852 tons, 29.5 %
      - Belts: 2,931 tons, 11.0 %
      - Torpedo bulkhead: 872 tons, 3.3 %
      - Armament: 1,672 tons, 6.3 %
      - Armour Deck: 2,148 tons, 8.1 %
      - Conning Tower: 230 tons, 0.9 %
   Machinery: 1,227 tons, 4.6 %
   Hull, fittings & equipment: 10,133 tons, 38.1 %
   Fuel, ammunition & stores: 4,625 tons, 17.4 %
   Miscellaneous weights: 600 tons, 2.3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     26,021 lbs / 11,803 Kg = 19.0 x 14.0 " / 356 mm shells or 4.6 torpedoes
   Stability (Unstable if below 1.00): 1.13
   Metacentric height 5.4 ft / 1.6 m
   Roll period: 16.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 51 %
         - Recoil effect (Restricted arc if above 1.00): 0.67
   Seaboat quality  (Average = 1.00): 1.00

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.672
   Length to Beam Ratio: 6.11 : 1
   'Natural speed' for length: 23.45 kts
   Power going to wave formation at top speed: 45 %
   Trim (Max stability = 0, Max steadiness = 100): 51
   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:      17.00 ft / 5.18 m
      - Forecastle (20 %):   14.00 ft / 4.27 m
      - Mid (50 %):      13.00 ft / 3.96 m (10.00 ft / 3.05 m aft of break)
      - Quarterdeck (5 %):   10.00 ft / 3.05 m
      - Stern:      10.00 ft / 3.05 m
      - Average freeboard:   12.09 ft / 3.69 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 102.5 %
      - Above water (accommodation/working, high = better): 80.7 %
   Waterplane Area: 38,696 Square feet or 3,595 Square metres
   Displacement factor (Displacement / loading): 94 %
   Structure weight / hull surface area: 204 lbs/sq ft or 994 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.33
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is cramped

[The Rock Doctor]

The armor's better, but I don't care for the freeboard.  While the seakeeping is acceptable, it won't take much of a list to put the edge of your deck in the water.

Is a nine or ten gun design on the same hull out of the question?

[Logi]

Its not, but I simply don't have the turrets, so its either 12 gun or 8 gun. The freeboard could certainly be better, I'm busy right now so I can't do the ss. But I'll try to fix it.

[Logi]

Raised the Freeboard Overall - Price was 383 tons and and 10 rounds on the main battery.

Ju Ren, RRC Pocket Battleship laid down 1917 (Engine 1912)

Displacement:
   22,383 t light; 24,090 t standard; 27,029 t normal; 29,380 t full load

Dimensions: Length overall / water x beam x draught
   550.00 ft / 550.00 ft x 90.00 ft x 29.00 ft (normal load)
   167.64 m / 167.64 m x 27.43 m  x 8.84 m

Armament:
      12 - 14.00" / 356 mm guns (3x4 guns), 1,650.00lbs / 748.43kg shells, 1917 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, all forward, 1 raised mount - superfiring
      12 - 5.51" / 140 mm guns (2x6 guns), 83.72lbs / 37.97kg shells, 1917 Model
     Quick firing guns in a deck mount with hoist
     on side aft
   Weight of broadside 20,805 lbs / 9,437 kg
   Shells per gun, main battery: 100

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12.0" / 305 mm   380.00 ft / 115.82 m   13.00 ft / 3.96 m
   Ends:   3.00" / 76 mm   170.00 ft / 51.82 m   13.00 ft / 3.96 m
   Upper:   1.00" / 25 mm   550.00 ft / 167.64 m   5.00 ft / 1.52 m
     Main Belt covers 106 % of normal length

   - Torpedo Bulkhead:
      2.00" / 51 mm   380.00 ft / 115.82 m   31.00 ft / 9.45 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.0" / 330 mm   6.00" / 152 mm      9.00" / 229 mm
   2nd:   1.00" / 25 mm         -               -

   - Armour deck: 3.00" / 76 mm, Conning tower: 12.00" / 305 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 28,328 shp / 21,133 Kw = 20.00 kts
   Range 10,400nm at 12.00 kts
   Bunker at max displacement = 5,291 tons (90% coal)

Complement:
   1,053 - 1,370

Cost:
   £5.072 million / $20.290 million

Distribution of weights at normal displacement:
   Armament: 2,184 tons, 8.1 %
   Armour: 7,856 tons, 29.1 %
      - Belts: 2,929 tons, 10.8 %
      - Torpedo bulkhead: 872 tons, 3.2 %
      - Armament: 1,701 tons, 6.3 %
      - Armour Deck: 2,122 tons, 7.9 %
      - Conning Tower: 233 tons, 0.9 %
   Machinery: 1,230 tons, 4.6 %
   Hull, fittings & equipment: 10,513 tons, 38.9 %
   Fuel, ammunition & stores: 4,646 tons, 17.2 %
   Miscellaneous weights: 600 tons, 2.2 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     28,037 lbs / 12,717 Kg = 20.4 x 14.0 " / 356 mm shells or 4.8 torpedoes
   Stability (Unstable if below 1.00): 1.09
   Metacentric height 5.1 ft / 1.5 m
   Roll period: 16.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 61 %
         - Recoil effect (Restricted arc if above 1.00): 0.90
   Seaboat quality  (Average = 1.00): 1.19

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.659
   Length to Beam Ratio: 6.11 : 1
   'Natural speed' for length: 23.45 kts
   Power going to wave formation at top speed: 45 %
   Trim (Max stability = 0, Max steadiness = 100): 51
   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:      18.00 ft / 5.49 m
      - Forecastle (20 %):   16.00 ft / 4.88 m
      - Mid (50 %):      15.00 ft / 4.57 m (13.00 ft / 3.96 m aft of break)
      - Quarterdeck (5 %):   13.00 ft / 3.96 m
      - Stern:      13.00 ft / 3.96 m
      - Average freeboard:   14.51 ft / 4.42 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 101.1 %
      - Above water (accommodation/working, high = better): 96.8 %
   Waterplane Area: 38,234 Square feet or 3,552 Square metres
   Displacement factor (Displacement / loading): 95 %
   Structure weight / hull surface area: 207 lbs/sq ft or 1,009 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.94
      - Longitudinal: 1.61
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is adequate

The design with 8 guns.

Ju Ren, RRC Pocket Battleship laid down 1917 (Engine 1912)

Displacement:
   21,765 t light; 23,118 t standard; 26,611 t normal; 29,406 t full load

Dimensions: Length overall / water x beam x draught
   550.00 ft / 550.00 ft x 90.00 ft x 28.00 ft (normal load)
   167.64 m / 167.64 m x 27.43 m  x 8.53 m

Armament:
      8 - 14.00" / 356 mm guns (2x4 guns), 1,650.00lbs / 748.43kg shells, 1917 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, all forward, 1 raised mount - superfiring
      16 - 5.51" / 140 mm guns (8x2 guns), 83.72lbs / 37.97kg shells, 1917 Model
     Quick firing guns in deck mounts with hoists
     on side, all aft
   Weight of broadside 14,540 lbs / 6,595 kg
   Shells per gun, main battery: 100

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   14.0" / 356 mm   300.00 ft / 91.44 m   13.00 ft / 3.96 m
   Ends:   3.00" / 76 mm   250.00 ft / 76.20 m   13.00 ft / 3.96 m
   Upper:   2.00" / 51 mm   550.00 ft / 167.64 m   5.00 ft / 1.52 m
     Main Belt covers 84 % of normal length
     Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
      2.50" / 64 mm   300.00 ft / 91.44 m   35.00 ft / 10.67 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15.0" / 381 mm   8.00" / 203 mm      12.0" / 305 mm
   2nd:   1.00" / 25 mm   1.00" / 25 mm            -

   - Armour deck: 3.00" / 76 mm, Conning tower: 12.00" / 305 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 3 shafts, 40,817 shp / 30,450 Kw = 22.00 kts
   Range 8,700nm at 14.00 kts
   Bunker at max displacement = 6,288 tons (90% coal)

Complement:
   1,041 - 1,354

Cost:
   £4.187 million / $16.749 million

Distribution of weights at normal displacement:
   Armament: 1,539 tons, 5.8 %
   Armour: 8,090 tons, 30.4 %
      - Belts: 3,085 tons, 11.6 %
      - Torpedo bulkhead: 971 tons, 3.6 %
      - Armament: 1,657 tons, 6.2 %
      - Armour Deck: 2,147 tons, 8.1 %
      - Conning Tower: 230 tons, 0.9 %
   Machinery: 1,773 tons, 6.7 %
   Hull, fittings & equipment: 9,763 tons, 36.7 %
   Fuel, ammunition & stores: 4,847 tons, 18.2 %
   Miscellaneous weights: 600 tons, 2.3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     34,937 lbs / 15,847 Kg = 25.5 x 14.0 " / 356 mm shells or 6.2 torpedoes
   Stability (Unstable if below 1.00): 1.18
   Metacentric height 5.8 ft / 1.8 m
   Roll period: 15.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.65
   Seaboat quality  (Average = 1.00): 1.14

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.672
   Length to Beam Ratio: 6.11 : 1
   'Natural speed' for length: 23.45 kts
   Power going to wave formation at top speed: 50 %
   Trim (Max stability = 0, Max steadiness = 100): 44
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      21.00 ft / 6.40 m
      - Forecastle (20 %):   18.00 ft / 5.49 m
      - Mid (50 %):      17.00 ft / 5.18 m (15.00 ft / 4.57 m aft of break)
      - Quarterdeck (5 %):   15.00 ft / 4.57 m
      - Stern:      15.00 ft / 4.57 m
      - Average freeboard:   16.59 ft / 5.06 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 88.0 %
      - Above water (accommodation/working, high = better): 113.3 %
   Waterplane Area: 38,688 Square feet or 3,594 Square metres
   Displacement factor (Displacement / loading): 108 %
   Structure weight / hull surface area: 188 lbs/sq ft or 917 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.94
      - Longitudinal: 1.66
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is adequate

[Logi]

Meant to hold oil, which is burned for warships, when the ships can not hold it themselves. I suppose it could also be sued as a collier, carrying coal.

Correct me if I'm wrong but I believe this falls under the merchant ship category?

Oil Tanker I, Republic Tanker laid down 1917 (Engine 1916)

Displacement:
   6,000 t light; 6,241 t standard; 11,559 t normal; 15,813 t full load

Dimensions: Length overall / water x beam x draught
   557.00 ft / 550.00 ft x 78.00 ft x 18.00 ft (normal load)
   169.77 m / 167.64 m x 23.77 m  x 5.49 m

Armament:
      8 - 2.95" / 75.0 mm guns (4x2 guns), 12.87lbs / 5.84kg shells, 1917 Model
     Breech loading guns in deck mounts with hoists
     on side, evenly spread
     Aft Main mounts separated by engine room
      8 - 0.98" / 25.0 mm guns (4x2 guns), 0.48lbs / 0.22kg shells, 1917 Model
     Breech loading guns in deck mounts
     on side, all amidships
   Weight of broadside 107 lbs / 48 kg
   Shells per gun, main battery: 150

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   2.00" / 51 mm   1.00" / 25 mm      1.00" / 25 mm
   2nd:   1.00" / 25 mm         -               -

   - Conning tower: 2.00" / 51 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 51,542 shp / 38,450 Kw = 27.00 kts
   Range 50,000nm at 12.00 kts
   Bunker at max displacement = 9,573 tons

Complement:
   556 - 724

Cost:
   £0.891 million / $3.564 million

Distribution of weights at normal displacement:
   Armament: 13 tons, 0.1 %
   Armour: 44 tons, 0.4 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 22 tons, 0.2 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 22 tons, 0.2 %
   Machinery: 1,920 tons, 16.6 %
   Hull, fittings & equipment: 3,522 tons, 30.5 %
   Fuel, ammunition & stores: 5,559 tons, 48.1 %
   Miscellaneous weights: 500 tons, 4.3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     27,710 lbs / 12,569 Kg = 2,152.7 x 3.0 " / 75 mm shells or 3.6 torpedoes
   Stability (Unstable if below 1.00): 1.82
   Metacentric height 9.1 ft / 2.8 m
   Roll period: 10.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.01
   Seaboat quality  (Average = 1.00): 1.17

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.524
   Length to Beam Ratio: 7.05 : 1
   'Natural speed' for length: 23.45 kts
   Power going to wave formation at top speed: 53 %
   Trim (Max stability = 0, Max steadiness = 100): 60
   Bow angle (Positive = bow angles forward): 12.80 degrees
   Stern overhang: 2.00 ft / 0.61 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      22.00 ft / 6.71 m
      - Forecastle (20 %):   16.00 ft / 4.88 m
      - Mid (50 %):      16.00 ft / 4.88 m
      - Quarterdeck (15 %):   16.00 ft / 4.88 m
      - Stern:      17.00 ft / 5.18 m
      - Average freeboard:   16.56 ft / 5.05 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 60.6 %
      - Above water (accommodation/working, high = better): 160.2 %
   Waterplane Area: 29,219 Square feet or 2,715 Square metres
   Displacement factor (Displacement / loading): 257 %
   Structure weight / hull surface area: 91 lbs/sq ft or 444 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.00
      - Longitudinal: 1.02
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform

[Tanthalas]

IDK man thats alot of guns for a tender of any type.

[Logi]

Its twin hoists so its really four gun emplacements of MGs and 75mm guns. That makes four corners? Its not a whole lot of coverage, the only other collier I have has 4 guns and is half its size so...

Its NOT a tender :-\ Its a oil tanker/collier. It does not hold accommodations for other warships or repair/refurbish other warships. It strictly carries fuel for the navy.