IJN, Post-1900

[Logi]

Also when steam turbine tech is unlocked construction will start on a follow-on to the Miho-class tender.
It'll be slightly faster to keep up with increasing fleet speeds and have a much shallower draft to operate closer to islands (8m -> 6.6m normal and 9.56m -> 8.3m max). Space will also be made for a long-range wireless.

Akashi, Japanese Tender laid down 1904 (Engine 1905)

Displacement:
   12,000 t light; 12,415 t standard; 19,259 t normal; 24,734 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (557.74 ft / 557.74 ft) x 71.52 ft x (21.65 / 27.22 ft)
   (170.00 m / 170.00 m) x 21.80 m  x (6.60 / 8.30 m)

Armament:
      2 - 5.98" / 152 mm 45.0 cal guns - 108.07lbs / 49.02kg shells, 250 per gun
     Breech loading guns in deck mounts, 1904 Model
     2 x Single mounts on centreline ends, evenly spread
      Weight of broadside 216 lbs / 98 kg

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 15,943 shp / 11,894 Kw = 18.00 kts
   Range 30,000nm at 10.00 kts
   Bunker at max displacement = 12,319 tons (90% coal)

Complement:
   816 - 1,062

Cost:
   £0.614 million / $2.457 million

Distribution of weights at normal displacement:
   Armament: 32 tons, 0.2 %
      - Guns: 32 tons, 0.2 %
   Machinery: 1,315 tons, 6.8 %
   Hull, fittings & equipment: 4,621 tons, 24.0 %
   Fuel, ammunition & stores: 7,259 tons, 37.7 %
   Miscellaneous weights: 6,031 tons, 31.3 %
      - Hull below water: 3,000 tons
      - Hull above water: 3,000 tons
      - On freeboard deck: 31 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     40,058 lbs / 18,170 Kg = 373.8 x 6.0 " / 152 mm shells or 3.8 torpedoes
   Stability (Unstable if below 1.00): 1.72
   Metacentric height 7.4 ft / 2.3 m
   Roll period: 11.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 85 %
         - Recoil effect (Restricted arc if above 1.00): 0.01
   Seaboat quality  (Average = 1.00): 1.71

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.780 / 0.797
   Length to Beam Ratio: 7.80 : 1
   'Natural speed' for length: 23.62 kts
   Power going to wave formation at top speed: 37 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Forward deck:   30.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Aft deck:   35.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Quarter deck:   15.00 %,  16.40 ft / 5.00 m,  16.40 ft / 5.00 m
      - Average freeboard:      16.40 ft / 5.00 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 57.7 %
      - Above water (accommodation/working, high = better): 131.8 %
   Waterplane Area: 34,426 Square feet or 3,198 Square metres
   Displacement factor (Displacement / loading): 220 %
   Structure weight / hull surface area: 100 lbs/sq ft or 486 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.13
      - Longitudinal: 0.95
      - Overall: 1.00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

25t - Long-Range Wireless

Hull below water: 3000t
Hull above water: 3000t
On deck: 6t

In Bunkerage: 6006t (6,313t left as coal)

Total: 12,012t worth of Tender Facilities, enough to undertake refurbishments as well as overhauls, basic refits, and basic repairs.

Can serve as port to 48,048 tons of shipping - larger than a Type 1 Port

[Logi]

Supposing that naval shells are uncapped rather than soft-capped, significant chunks of armor can be dropped - which results in this battlecruise-esque ship.

Katori, Japan Battlecruiser laid down 1903 (Engine 1900)

Displacement:
   15,000 t light; 15,785 t standard; 16,624 t normal; 17,296 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (446.19 ft / 446.19 ft) x 70.21 ft x (29.53 / 30.53 ft)
   (136.00 m / 136.00 m) x 21.40 m  x (9.00 / 9.30 m)

Armament:
      4 - 12.01" / 305 mm 40.0 cal guns - 850.98lbs / 386.00kg shells, 80 per gun
     Breech loading guns in turret on barbette mounts, 1903 Model
     2 x Twin mounts on centreline ends, evenly spread
      8 - 9.84" / 250 mm 45.0 cal guns - 440.92lbs / 200.00kg shells, 80 per gun
     Breech loading guns in turret on barbette mounts, 1903 Model
     4 x Twin mounts on sides, evenly spread
      12 - 5.98" / 152 mm 45.0 cal guns - 108.07lbs / 49.02kg shells, 200 per gun
     Quick firing guns in casemate mounts, 1903 Model
     12 x Single mounts on sides, evenly spread
      12 hull mounts in casemates- Limited use in heavy seas
      Weight of broadside 8,228 lbs / 3,732 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7.99" / 203 mm   446.19 ft / 136.00 m   13.12 ft / 4.00 m
   Upper:   5.00" / 127 mm   446.19 ft / 136.00 m   7.87 ft / 2.40 m
     Main Belt covers 154 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   9.06" / 230 mm   5.00" / 127 mm      7.09" / 180 mm
   2nd:   9.06" / 230 mm   5.00" / 127 mm      7.09" / 180 mm
   3rd:   9.06" / 230 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 2.05" / 52 mm
   Forecastle: 2.05" / 52 mm  Quarter deck: 2.05" / 52 mm

   - Conning towers: Forward 9.06" / 230 mm, Aft 0.00" / 0 mm

Machinery:
   Coal and oil fired boilers, complex reciprocating steam engines,
   Direct drive, 4 shafts, 26,589 ihp / 19,836 Kw = 21.00 kts
   Range 4,500nm at 10.00 kts
   Bunker at max displacement = 1,511 tons (90% coal)

Complement:
   731 - 951

Cost:
   £1.797 million / $7.189 million

Distribution of weights at normal displacement:
   Armament: 1,600 tons, 9.6 %
      - Guns: 1,600 tons, 9.6 %
   Armour: 4,765 tons, 28.7 %
      - Belts: 2,382 tons, 14.3 %
      - Armament: 1,357 tons, 8.2 %
      - Armour Deck: 899 tons, 5.4 %
      - Conning Tower: 127 tons, 0.8 %
   Machinery: 4,113 tons, 24.7 %
   Hull, fittings & equipment: 4,212 tons, 25.3 %
   Fuel, ammunition & stores: 1,624 tons, 9.8 %
   Miscellaneous weights: 310 tons, 1.9 %
      - Hull above water: 60 tons
      - Above deck: 250 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     10,211 lbs / 4,632 Kg = 11.8 x 12.0 " / 305 mm shells or 1.4 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 3.5 ft / 1.1 m
   Roll period: 15.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.89
   Seaboat quality  (Average = 1.00): 1.20

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.629 / 0.633
   Length to Beam Ratio: 6.36 : 1
   'Natural speed' for length: 21.12 kts
   Power going to wave formation at top speed: 53 %
   Trim (Max stability = 0, Max steadiness = 100): 58
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  16.08 ft / 4.90 m,  16.08 ft / 4.90 m
      - Forward deck:   30.00 %,  16.08 ft / 4.90 m,  16.08 ft / 4.90 m
      - Aft deck:   35.00 %,  16.08 ft / 4.90 m,  16.08 ft / 4.90 m
      - Quarter deck:   15.00 %,  16.08 ft / 4.90 m,  16.08 ft / 4.90 m
      - Average freeboard:      16.08 ft / 4.90 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 118.3 %
      - Above water (accommodation/working, high = better): 98.6 %
   Waterplane Area: 23,539 Square feet or 2,187 Square metres
   Displacement factor (Displacement / loading): 83 %
   Structure weight / hull surface area: 140 lbs/sq ft or 681 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.91
      - Longitudinal: 2.14
      - Overall: 1.00
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

[Logi]

Alternatively waiting 1 year for the 1905 engine tech yields this larger and faster battlecruiser which makes use of my Type 3 drydock:

Tsukaba, Japan Battlecruiser laid down 1904 (Engine 1905)

Displacement:
   21,000 t light; 21,877 t standard; 22,890 t normal; 23,701 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (633.20 ft / 633.20 ft) x 64.30 ft x (30.51 / 31.43 ft)
   (193.00 m / 193.00 m) x 19.60 m  x (9.30 / 9.58 m)

Armament:
      6 - 12.01" / 305 mm 40.0 cal guns - 850.98lbs / 386.00kg shells, 80 per gun
     Breech loading guns in turret on barbette mounts, 1904 Model
     3 x Twin mounts on centreline ends, majority aft
      16 - 5.98" / 152 mm 45.0 cal guns - 108.07lbs / 49.02kg shells, 200 per gun
     Quick firing guns in casemate mounts, 1904 Model
     16 x Single mounts on sides, evenly spread
      12 hull mounts in casemates- Limited use in heavy seas
      Weight of broadside 6,835 lbs / 3,100 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   10.0" / 254 mm   633.20 ft / 193.00 m   13.12 ft / 4.00 m
   Upper:   5.00" / 127 mm   633.20 ft / 193.00 m   6.56 ft / 2.00 m
     Main Belt covers 154 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   12.0" / 305 mm   5.00" / 127 mm      7.99" / 203 mm
   3rd:   5.00" / 127 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 2.48" / 63 mm
   Forecastle: 2.48" / 63 mm  Quarter deck: 2.48" / 63 mm

   - Conning towers: Forward 10.00" / 254 mm, Aft 0.00" / 0 mm

Machinery:
   Coal and oil fired boilers, complex reciprocating steam engines,
   Direct drive, 4 shafts, 54,505 ihp / 40,661 Kw = 25.00 kts
   Range 4,500nm at 10.00 kts
   Bunker at max displacement = 1,824 tons (90% coal)

Complement:
   929 - 1,209

Cost:
   £2.325 million / $9.299 million

Distribution of weights at normal displacement:
   Armament: 1,081 tons, 4.7 %
      - Guns: 1,081 tons, 4.7 %
   Armour: 6,330 tons, 27.7 %
      - Belts: 3,843 tons, 16.8 %
      - Armament: 877 tons, 3.8 %
      - Armour Deck: 1,436 tons, 6.3 %
      - Conning Tower: 174 tons, 0.8 %
   Machinery: 7,821 tons, 34.2 %
   Hull, fittings & equipment: 5,486 tons, 24.0 %
   Fuel, ammunition & stores: 1,890 tons, 8.3 %
   Miscellaneous weights: 281 tons, 1.2 %
      - Hull above water: 31 tons
      - Above deck: 250 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     11,282 lbs / 5,118 Kg = 13.0 x 12.0 " / 305 mm shells or 1.2 torpedoes
   Stability (Unstable if below 1.00): 1.09
   Metacentric height 3.0 ft / 0.9 m
   Roll period: 15.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.82
   Seaboat quality  (Average = 1.00): 1.20

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.645 / 0.648
   Length to Beam Ratio: 9.85 : 1
   'Natural speed' for length: 25.16 kts
   Power going to wave formation at top speed: 47 %
   Trim (Max stability = 0, Max steadiness = 100): 58
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  16.08 ft / 4.90 m,  16.08 ft / 4.90 m
      - Forward deck:   30.00 %,  16.08 ft / 4.90 m,  16.08 ft / 4.90 m
      - Aft deck:   35.00 %,  16.08 ft / 4.90 m,  16.08 ft / 4.90 m
      - Quarter deck:   15.00 %,  16.08 ft / 4.90 m,  16.08 ft / 4.90 m
      - Average freeboard:      16.08 ft / 4.90 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 130.8 %
      - Above water (accommodation/working, high = better): 102.3 %
   Waterplane Area: 31,045 Square feet or 2,884 Square metres
   Displacement factor (Displacement / loading): 85 %
   Structure weight / hull surface area: 121 lbs/sq ft or 592 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.99
      - Longitudinal: 1.08
      - Overall: 1.00
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

[Tanthalas]

interesting, Period data shows 9.7" pen @ 3000 yards on the British 12/40 (which is in line with what I am getting using uncapped shells), Soft Capped shows 12" @ 4800 yards but this is only listed on the King Edward VII class which makes me think it is a Later shell.

as to the ships, the first is rather the same place I have ended up, the second is FAR larger than anything I have even considered at this point, Heck its bigger than I was planing for my first "Dreadnought" types.  That isn't to be considered a complaint, I would just be curious to see the IJNs thinking about the type.

Actually truth be told the second proposal makes me wonder what I could do on increased size/tonnage.

[Logi]

Two variants of the Awa capital ship are under consideration. The former has thicker armor on the turrets & deck, 4 more 152mm secondaries, and is 1.5 kn faster. The latter has an extra 12"/40 twin turret.

Awa, Japanese Battleship laid down 1904 (Engine 1905)

Displacement:
   15,700 t light; 16,545 t standard; 17,540 t normal; 18,336 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (492.13 ft / 492.13 ft) x 76.77 ft x (26.41 / 27.40 ft)
   (150.00 m / 150.00 m) x 23.40 m  x (8.05 / 8.35 m)

Armament:
      8 - 12.01" / 305 mm 40.0 cal guns - 850.98lbs / 386.00kg shells, 80 per gun
     Breech loading guns in turret on barbette mounts, 1904 Model
     4 x Twin mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      16 - 5.98" / 152 mm 45.0 cal guns - 108.07lbs / 49.02kg shells, 200 per gun
     Quick firing guns in casemate mounts, 1904 Model
     16 x Single mounts on sides, evenly spread
      Weight of broadside 8,537 lbs / 3,872 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12.0" / 305 mm   492.13 ft / 150.00 m   13.12 ft / 4.00 m
   Upper:   6.10" / 155 mm   328.08 ft / 100.00 m   8.20 ft / 2.50 m
     Main Belt covers 154 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.0" / 330 mm   7.87" / 200 mm      11.0" / 280 mm
   2nd:   6.10" / 155 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 2.95" / 75 mm
   Forecastle: 1.97" / 50 mm  Quarter deck: 1.97" / 50 mm

   - Conning towers: Forward 12.01" / 305 mm, Aft 0.00" / 0 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 19,955 shp / 14,887 Kw = 19.50 kts
   Range 4,500nm at 10.00 kts
   Bunker at max displacement = 1,791 tons (90% coal)

Complement:
   761 - 990

Cost:
   £1.412 million / $5.650 million

Distribution of weights at normal displacement:
   Armament: 1,343 tons, 7.7 %
      - Guns: 1,343 tons, 7.7 %
   Armour: 6,959 tons, 39.7 %
      - Belts: 3,584 tons, 20.4 %
      - Armament: 1,753 tons, 10.0 %
      - Armour Deck: 1,447 tons, 8.3 %
      - Conning Tower: 175 tons, 1.0 %
   Machinery: 1,646 tons, 9.4 %
   Hull, fittings & equipment: 5,451 tons, 31.1 %
   Fuel, ammunition & stores: 1,840 tons, 10.5 %
   Miscellaneous weights: 300 tons, 1.7 %
      - Above deck: 300 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     24,332 lbs / 11,037 Kg = 28.1 x 12.0 " / 305 mm shells or 3.2 torpedoes
   Stability (Unstable if below 1.00): 1.09
   Metacentric height 3.9 ft / 1.2 m
   Roll period: 16.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.86
   Seaboat quality  (Average = 1.00): 1.50

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.615 / 0.620
   Length to Beam Ratio: 6.41 : 1
   'Natural speed' for length: 22.18 kts
   Power going to wave formation at top speed: 45 %
   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 (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  20.01 ft / 6.10 m,  18.70 ft / 5.70 m
      - Forward deck:   30.00 %,  18.70 ft / 5.70 m,  18.37 ft / 5.60 m
      - Aft deck:   35.00 %,  13.45 ft / 4.10 m,  13.45 ft / 4.10 m
      - Quarter deck:   15.00 %,  13.45 ft / 4.10 m,  13.78 ft / 4.20 m
      - Average freeboard:      16.16 ft / 4.92 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 64.3 %
      - Above water (accommodation/working, high = better): 110.8 %
   Waterplane Area: 28,028 Square feet or 2,604 Square metres
   Displacement factor (Displacement / loading): 106 %
   Structure weight / hull surface area: 152 lbs/sq ft or 740 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.93
      - Longitudinal: 1.78
      - Overall: 1.00
   Excellent machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Awa, Japanese Battleship laid down 1904 (Engine 1905)

Displacement:
   16,000 t light; 16,881 t standard; 17,894 t normal; 18,705 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (524.93 ft / 524.93 ft) x 80.71 ft x (27.23 / 28.20 ft)
   (160.00 m / 160.00 m) x 24.60 m  x (8.30 / 8.59 m)

Armament:
      10 - 12.01" / 305 mm 40.0 cal guns - 850.98lbs / 386.00kg shells, 80 per gun
     Breech loading guns in turret on barbette mounts, 1904 Model
     5 x Twin mounts on centreline, evenly spread
      2 raised mounts
      12 - 5.98" / 152 mm 45.0 cal guns - 108.07lbs / 49.02kg shells, 200 per gun
     Quick firing guns in casemate mounts, 1904 Model
     12 x Single mounts on sides, evenly spread
      12 hull mounts in casemates- Limited use in heavy seas
      Weight of broadside 9,807 lbs / 4,448 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12.0" / 305 mm   524.93 ft / 160.00 m   13.12 ft / 4.00 m
   Upper:   6.10" / 155 mm   213.25 ft / 65.00 m   8.20 ft / 2.50 m
     Main Belt covers 154 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.0" / 330 mm   3.94" / 100 mm      11.0" / 280 mm
   2nd:   6.10" / 155 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 2.52" / 64 mm
   Forecastle: 1.50" / 38 mm  Quarter deck: 1.50" / 38 mm

   - Conning towers: Forward 12.01" / 305 mm, Aft 0.00" / 0 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 14,484 shp / 10,805 Kw = 18.00 kts
   Range 4,500nm at 10.00 kts
   Bunker at max displacement = 1,824 tons (90% coal)

Complement:
   773 - 1,005

Cost:
   £1.477 million / $5.908 million

Distribution of weights at normal displacement:
   Armament: 1,532 tons, 8.6 %
      - Guns: 1,532 tons, 8.6 %
   Armour: 6,877 tons, 38.4 %
      - Belts: 3,583 tons, 20.0 %
      - Armament: 1,841 tons, 10.3 %
      - Armour Deck: 1,276 tons, 7.1 %
      - Conning Tower: 177 tons, 1.0 %
   Machinery: 1,195 tons, 6.7 %
   Hull, fittings & equipment: 6,092 tons, 34.0 %
   Fuel, ammunition & stores: 1,894 tons, 10.6 %
   Miscellaneous weights: 305 tons, 1.7 %
      - Hull above water: 5 tons
      - Above deck: 300 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     27,426 lbs / 12,440 Kg = 31.7 x 12.0 " / 305 mm shells or 3.7 torpedoes
   Stability (Unstable if below 1.00): 1.09
   Metacentric height 4.3 ft / 1.3 m
   Roll period: 16.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.87
   Seaboat quality  (Average = 1.00): 1.51

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.543 / 0.548
   Length to Beam Ratio: 6.50 : 1
   'Natural speed' for length: 22.91 kts
   Power going to wave formation at top speed: 37 %
   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 (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  17.72 ft / 5.40 m,  17.06 ft / 5.20 m
      - Forward deck:   30.00 %,  17.06 ft / 5.20 m,  16.73 ft / 5.10 m
      - Aft deck:   35.00 %,  16.73 ft / 5.10 m,  16.73 ft / 5.10 m
      - Quarter deck:   15.00 %,  16.73 ft / 5.10 m,  16.73 ft / 5.10 m
      - Average freeboard:      16.90 ft / 5.15 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 60.5 %
      - Above water (accommodation/working, high = better): 121.6 %
   Waterplane Area: 29,370 Square feet or 2,729 Square metres
   Displacement factor (Displacement / loading): 107 %
   Structure weight / hull surface area: 160 lbs/sq ft or 780 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.93
      - Longitudinal: 1.86
      - Overall: 1.00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[Logi]

Alternatively, a battlecruiser can be laid down in 1904

Tsukaba, Japanese Battlecruiser laid down 1904 (Engine 1905)

Displacement:
   17,500 t light; 18,248 t standard; 18,864 t normal; 19,356 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (557.74 ft / 557.74 ft) x 68.57 ft x (29.86 / 30.48 ft)
   (170.00 m / 170.00 m) x 20.90 m  x (9.10 / 9.29 m)

Armament:
      6 - 12.01" / 305 mm 40.0 cal guns - 850.98lbs / 386.00kg shells, 80 per gun
     Breech loading guns in turret on barbette mounts, 1898 Model
     3 x Twin mounts on centreline ends, majority forward
      1 raised mount - superfiring
      12 - 5.98" / 152 mm 45.0 cal guns - 108.07lbs / 49.02kg shells, 200 per gun
     Quick firing guns in casemate mounts, 1904 Model
     12 x Single mounts on sides, evenly spread
      Weight of broadside 6,403 lbs / 2,904 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   9.06" / 230 mm   557.74 ft / 170.00 m   9.84 ft / 3.00 m
   Upper:   3.94" / 100 mm   262.47 ft / 80.00 m   4.92 ft / 1.50 m
     Main Belt covers 154 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   12.0" / 305 mm   2.52" / 64 mm      4.92" / 125 mm
   3rd:   4.92" / 125 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 2.52" / 64 mm
   Forecastle: 1.50" / 38 mm  Quarter deck: 1.50" / 38 mm

   - Conning towers: Forward 9.06" / 230 mm, Aft 0.00" / 0 mm

Machinery:
   Coal and oil fired boilers, complex reciprocating steam engines,
   Direct drive, 4 shafts, 50,427 ihp / 37,619 Kw = 25.00 kts
   Range 3,000nm at 10.00 kts
   Bunker at max displacement = 1,108 tons (90% coal)

Complement:
   804 - 1,046

Cost:
   £2.100 million / $8.399 million

Distribution of weights at normal displacement:
   Armament: 1,007 tons, 5.3 %
      - Guns: 1,007 tons, 5.3 %
   Armour: 3,973 tons, 21.1 %
      - Belts: 2,068 tons, 11.0 %
      - Armament: 576 tons, 3.1 %
      - Armour Deck: 1,191 tons, 6.3 %
      - Conning Tower: 138 tons, 0.7 %
   Machinery: 7,236 tons, 38.4 %
   Hull, fittings & equipment: 4,984 tons, 26.4 %
   Fuel, ammunition & stores: 1,364 tons, 7.2 %
   Miscellaneous weights: 300 tons, 1.6 %
      - Above deck: 300 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     7,189 lbs / 3,261 Kg = 8.3 x 12.0 " / 305 mm shells or 1.0 torpedoes
   Stability (Unstable if below 1.00): 1.09
   Metacentric height 3.3 ft / 1.0 m
   Roll period: 15.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.72
   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): 0.578 / 0.581
   Length to Beam Ratio: 8.13 : 1
   'Natural speed' for length: 23.62 kts
   Power going to wave formation at top speed: 51 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  16.73 ft / 5.10 m,  15.42 ft / 4.70 m
      - Forward deck:   30.00 %,  15.42 ft / 4.70 m,  14.11 ft / 4.30 m
      - Aft deck:   35.00 %,  14.11 ft / 4.30 m,  13.12 ft / 4.00 m
      - Quarter deck:   15.00 %,  13.12 ft / 4.00 m,  13.45 ft / 4.10 m
      - Average freeboard:      14.38 ft / 4.38 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 147.0 %
      - Above water (accommodation/working, high = better): 91.8 %
   Waterplane Area: 27,407 Square feet or 2,546 Square metres
   Displacement factor (Displacement / loading): 81 %
   Structure weight / hull surface area: 130 lbs/sq ft or 632 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.97
      - Longitudinal: 1.29
      - Overall: 1.00
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

[Tanthalas]

Would it be worth waiting until Japan has the 12/45? I only ask cause the 12/40 is a bit long in the tooth already as the rest of us laying down BBs are using the L45 version of our mains.  I found myself in a bit of the opposite situation... I developed the 11/45 and then realized I had nothing worth putting it on LOL.

[Logi]

Japan will skip the 12"/45 for the 12"/50 since Japan had been developing the 8"/50. The 8"/50 will be ready by 1904/H1, so the earliest a 12"/50 gun will be ready is 1906/H1. Since the ship will be laid down in 1904/H2, that's an addition waiting period of 1.5 years. Contrast that with the build time of the ships of 2 to 2.5 years.

In addition, given that Japan will likely start the 1905 Naval Propulsion and 1905 BB/AC Architecture tech straight away so they will likely be done come 1906/H2. So at that point the new gun and new techs coincide for a new class of ships.

PS: The research budget for 1903 was maxed anyways so I can't even fit a 12"/45 gun to be researched earlier.

[Tanthalas]

Outside the gun consideration (and I cant argue with your logic on the guns just remember the L50 requires the 1905 gun tech as well), I would say Awa Version 1 was the best bet (best combination of speed/firepower/protection of the 3).  Alternatively you could drop a knot off the  Tsukaba proposal and proly get a fourth MB turret, I played around with something similar using VDT as my base.  24 knots would still make it the fastest "Capital Ship" out there (of the Current proposals my 21 and change is), and 8 guns vs the current 6 would proly be worth it, I wonder if the unarmoured ends would be legal however (looks like what I always considerd AoN)

[Jefgte]

Tsukaba - 17500T - 25kts
I note the very heavy weignt for the machinery
=> 7000t for 25kts.
IMO, too early for that high speed.

With 18kts & 19.5kts, the 2 Awa are too slow, 21kts is probably better in 1904

For all, ranges are short for Pacific operations

Jef  ;)

[Logi]

@Jeftge
Japan will have 12 Colliers by 1904/H1 and likely 20 by 1906/H1 and will also have two huge (16,000t) tenders by roughly 1906/H2, so large bunkers aren't considered necessary in the IJN. I tried to give the Awa ships 21 kn speed, but steam turbines don't provide enough power for that - it exceeds the 20,000 hp limit.

Besides, the Japanese battle line has a uniform speed of 18 kn. The fast wing is the one with 21 kn speed.
As for the 25 kn, with the main battle line's speed naturally increasing, I'm inclined to believe 21 kn is no longer enough for a fast wing. In addition, Japan has 6 battleships (abet pre-Dreadnought) but only 2 fast wing heavy cruisers. So a new pair of fast wing ship will have to be laid down soon.

25 kn also gives a 19% speed advantage as compared with 21 kn ships and a 16% speed disadvantage as compared with the IJN's 29kn destroyers. In other words, 25kn is almost smack dab in the middle.

--------

@Tan
I don't understand what you mean by unarmored ends. The main belt extends through the whole length of the ship - it is 170m long for a 170m long ship.

[Logi]

Like Tan suggested, I've dropped 1kn in exchange for 1 extra 12"/40 turret. I also thickened the upper belt armor by 1.5" (100mm -> 140mm) and the casemate armor by 0.5" (125mm->140mm)

Tsukaba, Japanese Battlecruiser laid down 1904 (Engine 1905)

Displacement:
   18,000 t light; 18,861 t standard; 19,487 t normal; 19,988 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (557.74 ft / 557.74 ft) x 77.76 ft x (29.86 / 30.45 ft)
   (170.00 m / 170.00 m) x 23.70 m  x (9.10 / 9.28 m)

Armament:
      8 - 12.01" / 305 mm 40.0 cal guns - 850.98lbs / 386.00kg shells, 80 per gun
     Breech loading guns in turret on barbette mounts, 1898 Model
     4 x Twin mounts on centreline ends, evenly spread
      2 raised mounts - superfiring
      14 - 5.98" / 152 mm 45.0 cal guns - 108.07lbs / 49.02kg shells, 200 per gun
     Quick firing guns in casemate mounts, 1904 Model
     14 x Single mounts on sides, evenly spread
      Weight of broadside 8,321 lbs / 3,774 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   9.06" / 230 mm   557.74 ft / 170.00 m   9.84 ft / 3.00 m
   Upper:   5.51" / 140 mm   262.47 ft / 80.00 m   4.92 ft / 1.50 m
     Main Belt covers 154 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   12.0" / 305 mm   2.52" / 64 mm      4.92" / 125 mm
   3rd:   5.51" / 140 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 2.52" / 64 mm
   Forecastle: 1.50" / 38 mm  Quarter deck: 1.50" / 38 mm

   - Conning towers: Forward 9.06" / 230 mm, Aft 0.00" / 0 mm

Machinery:
   Coal and oil fired boilers, complex reciprocating steam engines,
   Direct drive, 4 shafts, 43,664 ihp / 32,573 Kw = 24.00 kts
   Range 3,000nm at 10.00 kts
   Bunker at max displacement = 1,127 tons (90% coal)

Complement:
   824 - 1,072

Cost:
   £2.129 million / $8.518 million

Distribution of weights at normal displacement:
   Armament: 1,306 tons, 6.7 %
      - Guns: 1,306 tons, 6.7 %
   Armour: 4,362 tons, 22.4 %
      - Belts: 2,166 tons, 11.1 %
      - Armament: 767 tons, 3.9 %
      - Armour Deck: 1,287 tons, 6.6 %
      - Conning Tower: 141 tons, 0.7 %
   Machinery: 6,265 tons, 32.2 %
   Hull, fittings & equipment: 5,761 tons, 29.6 %
   Fuel, ammunition & stores: 1,487 tons, 7.6 %
   Miscellaneous weights: 306 tons, 1.6 %
      - Above deck: 306 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     8,995 lbs / 4,080 Kg = 10.4 x 12.0 " / 305 mm shells or 1.3 torpedoes
   Stability (Unstable if below 1.00): 1.09
   Metacentric height 4.0 ft / 1.2 m
   Roll period: 16.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.66
   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): 0.527 / 0.530
   Length to Beam Ratio: 7.17 : 1
   'Natural speed' for length: 23.62 kts
   Power going to wave formation at top speed: 49 %
   Trim (Max stability = 0, Max steadiness = 100): 69
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  15.75 ft / 4.80 m,  13.78 ft / 4.20 m
      - Forward deck:   30.00 %,  13.78 ft / 4.20 m,  13.12 ft / 4.00 m
      - Aft deck:   35.00 %,  13.12 ft / 4.00 m,  13.12 ft / 4.00 m
      - Quarter deck:   15.00 %,  13.12 ft / 4.00 m,  13.12 ft / 4.00 m
      - Average freeboard:      13.51 ft / 4.12 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 133.2 %
      - Above water (accommodation/working, high = better): 90.9 %
   Waterplane Area: 29,616 Square feet or 2,751 Square metres
   Displacement factor (Displacement / loading): 84 %
   Structure weight / hull surface area: 148 lbs/sq ft or 722 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.33
      - Overall: 1.00
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

[Tanthalas]

I hadn't looked just that it didn't list an end belt.  What you have now is more or less exactly what I ended up with trying for a VTE BC.  I decided it wasn't worth it for me, but I still think it is a solid ship.

[Logi]

Here's a cruiser design in addition. It'll replace the Takasogo and Naniwa light cruisers and retain the heavy firepower of those ships.
Cruiser speeds increased (17.5 & 18.5kn -> 23kn)
Range reduced (9000nm@10kn -> 6000nm@10kn) - but this is offset by the large number of colliers.
The ship is larger (3,500t & 3,000t -> 6,000t) but slightly better protected (12% & 15.3% Armor -> 19% Armor) and shifted from Protected to Armored scheme.

Tenryuu, Japanese Light Cruiser laid down 1904 (Engine 1905)

Displacement:
   6,000 t light; 6,305 t standard; 7,077 t normal; 7,695 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (501.97 ft / 501.97 ft) x 51.84 ft x (18.70 / 19.94 ft)
   (153.00 m / 153.00 m) x 15.80 m  x (5.70 / 6.08 m)

Armament:
      6 - 7.99" / 203 mm 50.0 cal guns - 275.58lbs / 125.00kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1904 Model
     3 x Twin mounts on centreline ends, majority forward
      1 raised mount - superfiring
      6 - 5.98" / 152 mm 45.0 cal guns - 108.07lbs / 49.02kg shells, 200 per gun
     Breech loading guns in deck and hoist mounts, 1904 Model
     6 x Twin mounts on sides, evenly spread
      Weight of broadside 2,302 lbs / 1,044 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   3.15" / 80 mm   501.97 ft / 153.00 m   9.84 ft / 3.00 m
     Main Belt covers 154 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   6.10" / 155 mm   1.50" / 38 mm      3.94" / 100 mm
   2nd:   1.97" / 50 mm   0.98" / 25 mm      0.98" / 25 mm

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

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

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 19,980 shp / 14,905 Kw = 23.00 kts
   Range 6,000nm at 10.00 kts
   Bunker at max displacement = 1,390 tons (90% coal)

Complement:
   385 - 501

Cost:
   £0.671 million / $2.684 million

Distribution of weights at normal displacement:
   Armament: 542 tons, 7.7 %
      - Guns: 542 tons, 7.7 %
   Armour: 1,347 tons, 19.0 %
      - Belts: 576 tons, 8.1 %
      - Armament: 262 tons, 3.7 %
      - Armour Deck: 478 tons, 6.7 %
      - Conning Tower: 31 tons, 0.4 %
   Machinery: 1,649 tons, 23.3 %
   Hull, fittings & equipment: 2,392 tons, 33.8 %
   Fuel, ammunition & stores: 1,077 tons, 15.2 %
   Miscellaneous weights: 70 tons, 1.0 %
      - Hull above water: 50 tons
      - On freeboard deck: 20 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     6,203 lbs / 2,814 Kg = 24.3 x 8.0 " / 203 mm shells or 1.1 torpedoes
   Stability (Unstable if below 1.00): 1.09
   Metacentric height 2.2 ft / 0.7 m
   Roll period: 14.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.83
   Seaboat quality  (Average = 1.00): 1.22

Hull form characteristics:
   Hull has rise forward of midbreak,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.509 / 0.519
   Length to Beam Ratio: 9.68 : 1
   'Natural speed' for length: 22.40 kts
   Power going to wave formation at top speed: 43 %
   Trim (Max stability = 0, Max steadiness = 100): 57
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  16.08 ft / 4.90 m,  16.08 ft / 4.90 m
      - Forward deck:   30.00 %,  16.08 ft / 4.90 m,  16.08 ft / 4.90 m
      - Aft deck:   35.00 %,  9.84 ft / 3.00 m,  9.84 ft / 3.00 m
      - Quarter deck:   15.00 %,  9.84 ft / 3.00 m,  9.84 ft / 3.00 m
      - Average freeboard:      12.96 ft / 3.95 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 106.1 %
      - Above water (accommodation/working, high = better): 110.0 %
   Waterplane Area: 17,481 Square feet or 1,624 Square metres
   Displacement factor (Displacement / loading): 102 %
   Structure weight / hull surface area: 100 lbs/sq ft or 487 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.99
      - Longitudinal: 1.06
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

Hull Above Water: 50 t
- 25t, Long-Range Wireless
- 25t, Reserve Weight

On Deck: 20 t
- 12t, 4 x 45cm single side TTs with two reloads each
- 8t, Reserve Weight

[Jefgte]

Why not identical speed whith BC Tsukaba ; 24kts ?