Japanese Design Concepts

[Desertfox]

Dedicated fire support ship for the army.

Tora class, Japan Army Gunfire Support Ship laid down 1916

Displacement:
   13,502 t light; 14,576 t standard; 15,200 t normal; 15,699 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (493.53 ft / 490.00 ft) x 94.00 ft x (21.00 / 21.54 ft)
   (150.43 m / 149.35 m) x 28.65 m  x (6.40 / 6.57 m)

Armament:
      6 - 14.00" / 356 mm 45.0 cal guns - 1,383.70lbs / 627.63kg shells, 142 per gun
     Breech loading guns in turret on barbette mounts, 1916 Model
     3 x Twin mounts on centreline, forward evenly spread
      1 raised mount
      12 - 6.00" / 152 mm 45.0 cal guns - 108.92lbs / 49.41kg shells, 150 per gun
     Quick firing guns in deck mounts, 1916 Model
     12 x Single mounts on sides, evenly spread
      12 - 2.00" / 50.8 mm 45.0 cal guns - 4.03lbs / 1.83kg shells, 250 per gun
     Quick firing guns in deck mounts, 1916 Model
     4 x Triple mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 9,658 lbs / 4,381 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   10.0" / 254 mm   270.00 ft / 82.30 m   14.00 ft / 4.27 m
   Ends:   Unarmoured
     Main Belt covers 85 % of normal length

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      1.00" / 25 mm   270.00 ft / 82.30 m   24.00 ft / 7.32 m
   Beam between torpedo bulkheads 70.00 ft / 21.34 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   10.0" / 254 mm   7.00" / 178 mm      10.0" / 254 mm
   2nd:   1.00" / 25 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 3.00" / 76 mm

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

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 11,220 shp / 8,370 Kw = 17.00 kts
   Range 5,000nm at 10.00 kts
   Bunker at max displacement = 1,122 tons (90% coal)

Complement:
   683 - 889

Cost:
   £2.250 million / $9.000 million

Distribution of weights at normal displacement:
   Armament: 1,641 tons, 10.8 %
      - Guns: 1,641 tons, 10.8 %
   Armour: 4,760 tons, 31.3 %
      - Belts: 1,781 tons, 11.7 %
      - Torpedo bulkhead: 240 tons, 1.6 %
      - Armament: 1,208 tons, 7.9 %
      - Armour Deck: 1,399 tons, 9.2 %
      - Conning Tower: 132 tons, 0.9 %
   Machinery: 455 tons, 3.0 %
   Hull, fittings & equipment: 6,375 tons, 41.9 %
   Fuel, ammunition & stores: 1,698 tons, 11.2 %
   Miscellaneous weights: 270 tons, 1.8 %
      - On freeboard deck: 100 tons
      - Above deck: 170 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     25,978 lbs / 11,783 Kg = 18.9 x 14.0 " / 356 mm shells or 5.5 torpedoes
   Stability (Unstable if below 1.00): 1.31
   Metacentric height 7.4 ft / 2.2 m
   Roll period: 14.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.41
   Seaboat quality  (Average = 1.00): 1.27

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.550 / 0.554
   Length to Beam Ratio: 5.21 : 1
   'Natural speed' for length: 22.14 kts
   Power going to wave formation at top speed: 37 %
   Trim (Max stability = 0, Max steadiness = 100): 55
   Bow angle (Positive = bow angles forward): 10.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   25.00 %,  20.00 ft / 6.10 m,  14.00 ft / 4.27 m
      - Forward deck:   20.00 %,  14.00 ft / 4.27 m,  14.00 ft / 4.27 m
      - Aft deck:   40.00 %,  14.00 ft / 4.27 m,  14.00 ft / 4.27 m
      - Quarter deck:   15.00 %,  14.00 ft / 4.27 m,  14.00 ft / 4.27 m
      - Average freeboard:      14.60 ft / 4.45 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 83.0 %
      - Above water (accommodation/working, high = better): 125.5 %
   Waterplane Area: 32,145 Square feet or 2,986 Square metres
   Displacement factor (Displacement / loading): 109 %
   Structure weight / hull surface area: 176 lbs/sq ft or 860 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.70
      - Overall: 1.00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

170t for 1908  FC
100t for Long-range wireless and flagship facilities

[Desertfox]

But its too expensive so maybe the army gets this one instead.

Tora class, Japan Army Gunfire Support Ship laid down 1916

Displacement:
   5,701 t light; 6,142 t standard; 6,506 t normal; 6,797 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (403.53 ft / 400.00 ft) x 69.00 ft x (15.00 / 15.53 ft)
   (122.99 m / 121.92 m) x 21.03 m  x (4.57 / 4.73 m)

Armament:
      6 - 10.00" / 254 mm 45.0 cal guns - 504.26lbs / 228.73kg shells, 147 per gun
     Breech loading guns in turret on barbette mounts, 1916 Model
     3 x Twin mounts on centreline, forward evenly spread
      1 raised mount
      2 - 8.00" / 203 mm 45.0 cal guns - 258.18lbs / 117.11kg shells, 150 per gun
     Breech loading guns in turret on barbette mounts, 1916 Model
     2 x Single mounts on centreline, aft evenly spread
      12 - 3.00" / 76.2 mm 45.0 cal guns - 13.62lbs / 6.18kg shells, 150 per gun
     Quick firing guns in deck mounts, 1916 Model
     12 x Single mounts on sides, evenly spread
      12 - 2.00" / 50.8 mm 45.0 cal guns - 4.03lbs / 1.83kg shells, 250 per gun
     Quick firing guns in deck mounts, 1916 Model
     4 x Triple mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 3,754 lbs / 1,703 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   7.00" / 178 mm   170.00 ft / 51.82 m   12.00 ft / 3.66 m
   Ends:   1.00" / 25 mm   230.00 ft / 70.10 m   12.00 ft / 3.66 m
     Main Belt covers 65 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   7.00" / 178 mm   3.00" / 76 mm      7.00" / 178 mm
   2nd:   1.00" / 25 mm   1.00" / 25 mm      1.00" / 25 mm
   3rd:   1.00" / 25 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 1.50" / 38 mm

   - Conning towers: Forward 7.00" / 178 mm, Aft 0.00" / 0 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 6,978 shp / 5,205 Kw = 17.00 kts
   Range 5,000nm at 10.00 kts
   Bunker at max displacement = 655 tons (90% coal)

Complement:
   361 - 470

Cost:
   £0.951 million / $3.805 million

Distribution of weights at normal displacement:
   Armament: 856 tons, 13.2 %
      - Guns: 856 tons, 13.2 %
   Armour: 1,705 tons, 26.2 %
      - Belts: 812 tons, 12.5 %
      - Armament: 467 tons, 7.2 %
      - Armour Deck: 374 tons, 5.8 %
      - Conning Tower: 53 tons, 0.8 %
   Machinery: 283 tons, 4.4 %
   Hull, fittings & equipment: 2,667 tons, 41.0 %
   Fuel, ammunition & stores: 804 tons, 12.4 %
   Miscellaneous weights: 190 tons, 2.9 %
      - On freeboard deck: 90 tons
      - Above deck: 100 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     10,839 lbs / 4,917 Kg = 21.7 x 10.0 " / 254 mm shells or 2.5 torpedoes
   Stability (Unstable if below 1.00): 1.22
   Metacentric height 4.1 ft / 1.3 m
   Roll period: 14.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.47
   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): 0.550 / 0.555
   Length to Beam Ratio: 5.80 : 1
   'Natural speed' for length: 20.00 kts
   Power going to wave formation at top speed: 40 %
   Trim (Max stability = 0, Max steadiness = 100): 58
   Bow angle (Positive = bow angles forward): 10.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   35.00 %,  20.00 ft / 6.10 m,  11.00 ft / 3.35 m
      - Forward deck:   20.00 %,  11.00 ft / 3.35 m,  11.00 ft / 3.35 m
      - Aft deck:   30.00 %,  11.00 ft / 3.35 m,  11.00 ft / 3.35 m
      - Quarter deck:   15.00 %,  11.00 ft / 3.35 m,  11.00 ft / 3.35 m
      - Average freeboard:      12.26 ft / 3.74 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 63.7 %
      - Above water (accommodation/working, high = better): 111.8 %
   Waterplane Area: 19,262 Square feet or 1,789 Square metres
   Displacement factor (Displacement / loading): 114 %
   Structure weight / hull surface area: 128 lbs/sq ft or 626 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.57
      - Overall: 1.00
   Excellent 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

100t for 1908  FC
90t for Long-range wireless and flagship facilities

[snip]

Seems far worse than just retasking an old predread to do the job

[Desertfox]

I don't really have any old predreads to spare, plus the army wants their own ship. They don't want to depend on the Navy for help.

[TacCovert4]

I don't really have any old predreads to spare, plus the army wants their own ship. They don't want to depend on the Navy for help.

As something for actual combat use......I'd call bs. 

As a Fire Support Ship within the Imperial Japanese Army 'Maritime Service'.....makes perfect sense. 

And makes perfect since in the idiom of the IJA and IJN getting along almost as well as Aztecs and Mayans. 

Thinking within the idiom, here's my opinion:

1)   The Navy will absolutely veto, throw a fit, and threaten to torpedo any 'Army' ship with 14in guns.  Those guns are reserved for navy use.  The 10in 'gunboat' will receive very tacit approval.

2)  6 gun main battery is excessive, and again the Navy is going to lose their collective poo about the Army getting a pocket dreadnought. 

3)  The Armor is excessive, and again the Navy is going to lose their collective poo.

4)  Conversely the TDS is rather minimal, which is going to hurt survivability more than anything else, especially considering how their theaters of operations trend towards MTB, TB, and U-boat hell....


In short, I think that the IJN will be pushing for nothing, but would grudgingly, very very grudgingly accept something like the following (sorry, not at my PC so I don't have SS access at the moment to whip it up):

1)  Range and speed and propulsion is fine as is on the 2nd monitor plan.

2)  Make it shorter and beamier with either bulges or otherwise a deep TDS.

3)  Reduce the 10in battery to preferably a single twin, alternatively two twins, maximum.

4)  If only a single twin, toss on a pair of single 6in guns or somesuch, if two twins, then no intermediate battery.

5)  Anti TB mounts (I'm presuming they'd later be AA mounts) look good actually.  Though if cutting the 3in guns down to 8 or 10 will let you cut noticeable weight, then do it.

6)  38mm deck is fine, honestly I'd raise it to 50mm given that a monitor will be more likely to take fire from heavy field batteries than from warships.  The 178mm belt is REALLY high though, you're full on resisting some serious fires with that.  Cut that to more like 100-130mm, and bump the end belts up to 60mm.  That way your armor will keep out anything a DD or TB can throw at you, and your main belt will resist even the heaviest field guns, but you're not dumping BC levels of armor onto a gunboat.

7)  Chop as MUCH weight as you can.  If you want to use 6000t worth of IC and BP on it, better to make a 2 monitor class of 3000t vessels than a single ship anyway.  And I think you could reasonably get a pair of these for under 5000t, which would alleviate much Navy screaming.  The seakeeping is probably a bit excessive, 1.20 would be doing crossings of the Pacific in Typhoon season, you can easily have a very seaworthy ship for this role at 1.10, or even 1.05.

6)  Chop as much weight as you possibly

[TacCovert4]

Truthfully, I'd do this instead:

https://en.wikipedia.org/wiki/M15-class_monitor

This is something along the lines of partial inspiration for classes like my Landing Support Ships.  Commercial built transports, armed with 1-3 guns that are suitable for providing fire support for the Marines that they are bringing to the fight.  Built with the guns forward in splinter protected mounts, and some splinter protection forward to protect the Marines who are loading onto boats Aft for the landing assault. 

Keep in mind that at this time IRL, one of the best field artillery pieces on earth is a 3in gun.  And the best heavy field artillery is running from 105 to 155mm, with only a mere handful of 7 and 8 inch guns worldwide.  A 3in gun is basically the smallest 'functional' naval rifle, conversely....and a 100mm gun is about the smallest gun you'll see on a secondary of a major warship in construction.  And Naval guns fire faster and with more reliable ammunition feed and a larger gun crew than field artillery....they're also more accurate due to far better fire control. 

For example, my LSP-A class has a pair of 100mm guns.  These are IMHO equivalent to having a 4-6 gun 105mm battery due to the inherent advantages that a ship gets out of its artillery.  They're popguns by naval standards.....but they're the ideal gun type by land warfare standards.  The two things that you really get out of a big gun on a monitor are range and anti-fortification.  And if there are major coastal forts, then you steam up with a couple of dreadnoughts and pour AP into them to crack them wide open....or you go around.  If there aren't then the only thing you're really getting is range.....you don't want to do danger-close arty strikes with even an 8in gun. 

Hence my argument that 2 x 10in, 4 max, is more than sufficient, and put the rest of the tonnage into torpedo defense for such a slow vessel operating inshore day and night where it's most vulnerable to MTB and submarine attack......and have a 'self defense battery' of a number of 3in guns and your 2in gatlings.

[Jefgte]

Byzantine troops in the colonies do not need an "army ship".

The Byzantine Navy assigned to amphibious operations and colonies has the primary mission of supporting land troops.
Many actions have shown that the marine artillery perfectly supported the army in battles.
The most important was undoubtedly the battle of Mahanoro, supported by the cruiser Arkoudi, followed by the massacre of Salehi supported by the TGB49 & TGB50

=> Generally speaking, there is always at least one Byzantine ship in a colonial harbor.

[maddox]

Removed, reworked in a newsroom topic.

[The Rock Doctor]

I like the idea that the Japanese army wants its own ships.

[Desertfox]

Lets see how many MTBs can we stuff into a ship...

Nisshin Maru, Japan Torpedo Boat Carrier laid down 1915

Displacement:
   3,999 t light; 4,117 t standard; 5,091 t normal; 5,871 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (400.00 ft / 400.00 ft) x 54.00 ft x (15.00 / 16.81 ft)
   (121.92 m / 121.92 m) x 16.46 m  x (4.57 / 5.12 m)

Armament:
      2 - 5.00" / 127 mm 45.0 cal guns - 63.03lbs / 28.59kg shells, 150 per gun
     Breech loading guns in deck mounts, 1915 Model
     2 x Single mounts on centreline, forward deck forward
      12 - 2.00" / 50.8 mm 45.0 cal guns - 4.03lbs / 1.83kg shells, 200 per gun
     Breech loading guns in deck mounts, 1915 Model
     4 x Triple mounts on sides, evenly spread
      Weight of broadside 174 lbs / 79 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Ends:   Unarmoured

   - Torpedo Bulkhead - Additional damage containing bulkheads:
      0.50" / 13 mm   400.00 ft / 121.92 m   10.00 ft / 3.05 m
   Beam between torpedo bulkheads 40.00 ft / 12.19 m

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

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 10,694 shp / 7,977 Kw = 20.00 kts
   Range 10,000nm at 14.00 kts
   Bunker at max displacement = 1,754 tons

Complement:
   300 - 391

Cost:
   £0.299 million / $1.195 million

Distribution of weights at normal displacement:
   Armament: 27 tons, 0.5 %
      - Guns: 27 tons, 0.5 %
   Armour: 88 tons, 1.7 %
      - Torpedo bulkhead: 74 tons, 1.5 %
      - Armament: 14 tons, 0.3 %
   Machinery: 405 tons, 8.0 %
   Hull, fittings & equipment: 1,454 tons, 28.6 %
   Fuel, ammunition & stores: 1,092 tons, 21.4 %
   Miscellaneous weights: 2,025 tons, 39.8 %
      - Hull below water: 400 tons
      - Hull above water: 800 tons
      - On freeboard deck: 800 tons
      - Above deck: 25 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     12,320 lbs / 5,588 Kg = 197.1 x 5.0 " / 127 mm shells or 3.0 torpedoes
   Stability (Unstable if below 1.00): 1.35
   Metacentric height 3.4 ft / 1.0 m
   Roll period: 12.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.03
   Seaboat quality  (Average = 1.00): 1.84

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.550 / 0.566
   Length to Beam Ratio: 7.41 : 1
   'Natural speed' for length: 20.00 kts
   Power going to wave formation at top speed: 46 %
   Trim (Max stability = 0, Max steadiness = 100): 38
   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 %,  17.00 ft / 5.18 m,  15.00 ft / 4.57 m
      - Forward deck:   30.00 %,  15.00 ft / 4.57 m,  15.00 ft / 4.57 m
      - Aft deck:   35.00 %,  15.00 ft / 4.57 m,  15.00 ft / 4.57 m
      - Quarter deck:   15.00 %,  15.00 ft / 4.57 m,  15.00 ft / 4.57 m
      - Average freeboard:      15.16 ft / 4.62 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 73.3 %
      - Above water (accommodation/working, high = better): 143.6 %
   Waterplane Area: 15,074 Square feet or 1,400 Square metres
   Displacement factor (Displacement / loading): 169 %
   Structure weight / hull surface area: 67 lbs/sq ft or 326 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.39
      - 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 - LR Wireless
1600t - Accomodations for 40 x 20t MTBs
400t - Spare/Other MTB stuff

[Desertfox]

And a fast one

Jingei class, Japan Torpedo Boat Carrier laid down 1915

Displacement:
   1,724 t light; 1,788 t standard; 1,920 t normal; 2,025 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (400.00 ft / 400.00 ft) x 34.00 ft x (13.00 / 13.45 ft)
   (121.92 m / 121.92 m) x 10.36 m  x (3.96 / 4.10 m)

Armament:
      2 - 5.00" / 127 mm 45.0 cal guns - 63.03lbs / 28.59kg shells, 250 per gun
     Breech loading guns in deck mounts, 1915 Model
     2 x Single mounts on centreline ends, evenly spread
      12 - 2.00" / 50.8 mm 45.0 cal guns - 4.03lbs / 1.83kg shells, 300 per gun
     Breech loading guns in deck mounts, 1915 Model
     4 x Triple mounts on sides, evenly spread
      Weight of broadside 174 lbs / 79 kg

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 16,768 shp / 12,509 Kw = 27.00 kts
   Range 2,300nm at 14.00 kts
   Bunker at max displacement = 237 tons

Complement:
   144 - 188

Cost:
   £0.230 million / $0.919 million

Distribution of weights at normal displacement:
   Armament: 27 tons, 1.4 %
      - Guns: 27 tons, 1.4 %
   Machinery: 635 tons, 33.1 %
   Hull, fittings & equipment: 632 tons, 32.9 %
   Fuel, ammunition & stores: 196 tons, 10.2 %
   Miscellaneous weights: 430 tons, 22.4 %
      - On freeboard deck: 400 tons
      - Above deck: 30 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     1,544 lbs / 701 Kg = 24.7 x 5.0 " / 127 mm shells or 0.6 torpedoes
   Stability (Unstable if below 1.00): 1.04
   Metacentric height 1.1 ft / 0.3 m
   Roll period: 13.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 52 %
         - Recoil effect (Restricted arc if above 1.00): 0.11
   Seaboat quality  (Average = 1.00): 1.17

Hull form characteristics:
   Hull has raised forecastle,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0.380 / 0.388
   Length to Beam Ratio: 11.76 : 1
   'Natural speed' for length: 20.00 kts
   Power going to wave formation at top speed: 49 %
   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 (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   25.00 %,  14.00 ft / 4.27 m,  14.00 ft / 4.27 m
      - Forward deck:   30.00 %,  10.00 ft / 3.05 m,  10.00 ft / 3.05 m
      - Aft deck:   20.00 %,  10.00 ft / 3.05 m,  10.00 ft / 3.05 m
      - Quarter deck:   25.00 %,  10.00 ft / 3.05 m,  10.00 ft / 3.05 m
      - Average freeboard:      11.00 ft / 3.35 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 112.8 %
      - Above water (accommodation/working, high = better): 109.3 %
   Waterplane Area: 8,261 Square feet or 767 Square metres
   Displacement factor (Displacement / loading): 108 %
   Structure weight / hull surface area: 47 lbs/sq ft or 228 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.89
      - Longitudinal: 1.03
      - Overall: 0.90
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room

30t - LR wireless + FC
400t - Cranes and space for 10 x 20t TB

[The Rock Doctor]

The weight might work but does the deck space?

[Desertfox]

[Jefgte]

400t - Cranes and space for 10 x 20t TB

I'm ok with Rocky
122mx10.3m
with bridge, stacks, cranes...

[The Rock Doctor]

BUT BUT BUT THAT'S THE 1919 TECH LEVEL