UNK Designs

[hooper82]

With some very dodgy advice *looks at Tanthalas and Sachmle =)*, I've decided to lay down run of 1 (at this stage anyway) BC, the HMS Hood, Pride of the UNK Fleet.

Thoughts?

Hood, UNK Battlecruiser laid down 1917 (Engine 1916) - REVISION 1.4

Displacement:
   38,983 t light; 40,960 t standard; 45,555 t normal; 49,231 t full load

Dimensions: Length overall / water x beam x draught
   871.59 ft / 856.00 ft x 107.00 ft x 32.00 ft (normal load)
   265.66 m / 260.91 m x 32.61 m  x 9.75 m

Armament:
      8 - 16.00" / 406 mm guns (4x2 guns), 2,200.00lbs / 997.90kg shells, 1915 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      16 - 5.50" / 140 mm guns (8x2 guns), 82.00lbs / 37.19kg shells, 1912 Model
     Breech loading guns in deck mounts with hoists
     on side, all amidships, 2 raised mounts - superfiring
      8 - 1.57" / 40.0 mm guns (2x4 guns), 2.00lbs / 0.91kg shells, 1917 Model
     Anti-aircraft guns in deck mounts
     on side, evenly spread, all raised mounts
      8 - 1.00" / 25.4 mm guns (4x2 guns), 0.50lbs / 0.23kg shells, 1917 Model
     Anti-aircraft guns in deck mounts
     on side, evenly spread
   Weight of broadside 18,932 lbs / 8,587 kg
   Shells per gun, main battery: 100

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12.0" / 305 mm   556.00 ft / 169.47 m   16.00 ft / 4.88 m
   Ends:   3.00" / 76 mm   300.00 ft / 91.44 m   14.00 ft / 4.27 m
     Main Belt covers 100 % of normal length

   - Torpedo Bulkhead:
      1.50" / 38 mm   556.00 ft / 169.47 m   32.00 ft / 9.75 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   12.0" / 305 mm   6.00" / 152 mm      12.0" / 305 mm
   2nd:   2.00" / 51 mm   1.00" / 25 mm      2.00" / 51 mm
   4th:   0.50" / 13 mm         -               -

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 134,000 shp / 99,964 Kw = 29.02 kts
   Range 18,000nm at 12.00 kts
   Bunker at max displacement = 8,271 tons

Complement:
   1,558 - 2,026

Cost:
   £7.137 million / $28.549 million

Distribution of weights at normal displacement:
   Armament: 2,217 tons, 4.9 %
   Armour: 12,738 tons, 28.0 %
      - Belts: 5,013 tons, 11.0 %
      - Torpedo bulkhead: 987 tons, 2.2 %
      - Armament: 2,880 tons, 6.3 %
      - Armour Deck: 3,528 tons, 7.7 %
      - Conning Tower: 330 tons, 0.7 %
   Machinery: 4,993 tons, 11.0 %
   Hull, fittings & equipment: 18,236 tons, 40.0 %
   Fuel, ammunition & stores: 6,572 tons, 14.4 %
   Miscellaneous weights: 800 tons, 1.8 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     60,209 lbs / 27,310 Kg = 29.4 x 16.0 " / 406 mm shells or 8.6 torpedoes
   Stability (Unstable if below 1.00): 1.10
   Metacentric height 6.6 ft / 2.0 m
   Roll period: 17.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.73
   Seaboat quality  (Average = 1.00): 1.23

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.544
   Length to Beam Ratio: 8.00 : 1
   'Natural speed' for length: 29.26 kts
   Power going to wave formation at top speed: 46 %
   Trim (Max stability = 0, Max steadiness = 100): 57
   Bow angle (Positive = bow angles forward): 30.00 degrees
   Stern overhang: -6.00 ft / -1.83 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      27.00 ft / 8.23 m
      - Forecastle (20 %):   24.00 ft / 7.32 m
      - Mid (70 %):      24.00 ft / 7.32 m (16.00 ft / 4.88 m aft of break)
      - Quarterdeck (15 %):   16.00 ft / 4.88 m
      - Stern:      16.00 ft / 4.88 m
      - Average freeboard:   21.84 ft / 6.66 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 91.7 %
      - Above water (accommodation/working, high = better): 172.2 %
   Waterplane Area: 63,563 Square feet or 5,905 Square metres
   Displacement factor (Displacement / loading): 110 %
   Structure weight / hull surface area: 207 lbs/sq ft or 1,011 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.00
      - Longitudinal: 1.04
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

500t 2xFire Control
50t 2xLong Range Wireless
50t 2xRadar
100t Flag Bridge
100t Building Reserve

Main belt at a 8 Degree Slope

Range (8,300 tons Fuel Oil)
18,000nm @ 12 kts
7,400nm @ 18 kts
2,400nm @ 28 kts

Thanks to Tanthalas, Sachmle & Maddox for design assistance.

[mentat]

  Any Ship called Hood - gets my vote   ;D

But - dare I say it - would prefer a bit more armour round the Magazines - esp. vs. 14" gunned opposition upwards

If size + cost are at a max. - maybe scope to shave off a bit freeboard/seaboat qlty ( I think is least critical parameter for Big Ship) or range ?

Whatever you decide to do - can we have a picture - PLEASE  ;D  :P

[Jefgte]

Yes, a picture please for the UNK Hood ...


Jef  ;)

[hooper82]

Ok ok, I'm sensing a theme here...Lemy get up to speed on my reports, and I'll get a picky done.

[hooper82]

The Royal Navy currently has no Battlecruisers, and this is seen as a major deficiency.  Its current plans are to lay down the Hood, along with several smaller, lighter BC's.  The RN is planning to lay down no less than 4 (and up to 8 ) of these between 1917 and 1919.

Lion, UNK Battlecruiser laid down 1917 (Engine 1916) - REVISION 1.2

Displacement:
   24,629 t light; 25,814 t standard; 28,834 t normal; 31,251 t full load

Dimensions: Length overall / water x beam x draught
   719.01 ft / 704.00 ft x 88.00 ft x 30.00 ft (normal load)
   219.15 m / 214.58 m x 26.82 m  x 9.14 m

Armament:
      6 - 14.00" / 356 mm guns (2x3 guns), 1,649.00lbs / 747.97kg shells, 1910 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread
      16 - 4.72" / 120 mm guns (8x2 guns), 52.72lbs / 23.91kg shells, 1916 Model
     Breech loading guns in deck mounts with hoists
     on side, all amidships, 2 raised mounts - superfiring
      8 - 1.57" / 40.0 mm guns (2x4 guns), 1.95lbs / 0.88kg shells, 1917 Model
     Anti-aircraft guns in deck mounts
     on centreline ends, evenly spread, all raised mounts
      4 - 1.00" / 25.4 mm guns in single mounts, 0.50lbs / 0.23kg shells, 1916 Model
     Anti-aircraft guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 10,755 lbs / 4,878 kg
   Shells per gun, main battery: 100

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12.0" / 305 mm   454.00 ft / 138.38 m   16.00 ft / 4.88 m
   Ends:   3.00" / 76 mm   250.00 ft / 76.20 m   14.00 ft / 4.27 m
     Main Belt covers 99 % of normal length

   - Torpedo Bulkhead:
      1.50" / 38 mm   454.00 ft / 138.38 m   28.00 ft / 8.53 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   12.0" / 305 mm   6.00" / 152 mm      12.0" / 305 mm
   2nd:   2.00" / 51 mm   1.00" / 25 mm      2.00" / 51 mm

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

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 96,008 shp / 71,622 Kw = 28.20 kts
   Range 16,000nm at 12.00 kts
   Bunker at max displacement = 5,437 tons

Complement:
   1,106 - 1,438

Cost:
   £4.214 million / $16.855 million

Distribution of weights at normal displacement:
   Armament: 1,137 tons, 3.9 %
   Armour: 8,798 tons, 30.5 %
      - Belts: 4,106 tons, 14.2 %
      - Torpedo bulkhead: 706 tons, 2.4 %
      - Armament: 1,359 tons, 4.7 %
      - Armour Deck: 2,384 tons, 8.3 %
      - Conning Tower: 243 tons, 0.8 %
   Machinery: 3,577 tons, 12.4 %
   Hull, fittings & equipment: 10,718 tons, 37.2 %
   Fuel, ammunition & stores: 4,205 tons, 14.6 %
   Miscellaneous weights: 400 tons, 1.4 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     39,843 lbs / 18,072 Kg = 29.0 x 14.0 " / 356 mm shells or 5.8 torpedoes
   Stability (Unstable if below 1.00): 1.12
   Metacentric height 5.2 ft / 1.6 m
   Roll period: 16.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.70
   Seaboat quality  (Average = 1.00): 1.21

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.543
   Length to Beam Ratio: 8.00 : 1
   'Natural speed' for length: 26.53 kts
   Power going to wave formation at top speed: 50 %
   Trim (Max stability = 0, Max steadiness = 100): 58
   Bow angle (Positive = bow angles forward): 30.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      26.00 ft / 7.92 m
      - Forecastle (20 %):   23.00 ft / 7.01 m
      - Mid (70 %):      23.00 ft / 7.01 m (14.00 ft / 4.27 m aft of break)
      - Quarterdeck (15 %):   14.00 ft / 4.27 m
      - Stern:      14.00 ft / 4.27 m
      - Average freeboard:   20.54 ft / 6.26 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 93.5 %
      - Above water (accommodation/working, high = better): 154.8 %
   Waterplane Area: 42,953 Square feet or 3,990 Square metres
   Displacement factor (Displacement / loading): 113 %
   Structure weight / hull surface area: 170 lbs/sq ft or 829 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.35
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

250t Fire Control
25t Long Range Wireless
25t Radar
100t Building Reserve

Main belt at a 8 Degree Slope

Range (5,478 tons Fuel Oil)
16,000nm @ 12 kts
6,400nm @ 18 kts
2,000nm @ 28kts

14"/52, Mark 2 (1910), 1,649lb Shell, ROF 2
4.72"/50, Mark 6 (1916), 57lb Shell, ROF 8-10
1.57"/50, Mark 1 (1917), 2lb Shell, QF, AA, ROF 100
1"/50, Mark 1 (1916), 0.5lb Shell, QF, AA, ROF 300

[mentat]

interesting - what are the smaller BCs for - type of role and likely opposition

i'm thinking the opposition is getting bigger and just as fast - Mondedor etc

   the Lion is reasonably priced - but it lacks ROAR  ;) - in fact - more like a domestic pussy :( .  ....


an alternative would be 3 Hoods with 14" armour    mmmm yummy .....

[Borys]

Ahoj!
Mentat rises a good point - could a 4x2x15" HMS Hood carrry a 13" (or better) belt?
Then I'd call it a day and build four.

Borys

[Walter]

could a 4x2x15" HMS Hood carrry a 13" (or better) belt?

Considering that I have a 27 knot design that is like HMS Hood, but has thicker armor and is some 6000 tons lighter than Hooper's Hood, I would say that that is certainly possible.

[hooper82]

Revised it a little, just some tweaks (Thanks Tan!).  I can get better armor, but she's a battlecruiser, not a battleship.  I Want to get it to 30 knots, but its just not possible with 16" guns.  Going to try a 15" design...

[Walter]

If you want 30 knots, you really should go for 15"... or a bigger boat. :)

[Tanthalas]

If you want 30 knots, you really should go for 15"... or a bigger boat. :)

Cant do it with 15" guns either its the weight necessary on the ship, the SHP restrictions bite you off at about 29.5 even for asfolath without making massive cuts to say main gun numbers

[mentat]

i'm guessing 41k tons (full Hood size ;D) 8 x 15" and 30 knots and still decent armour (armour could be +1" for Mags) should be possible .... hope so ... this is a critical project  ;)

[Tanthalas]

i'm guessing 41k tons (full Hood size ;D) 8 x 15" and 30 knots and still decent armour (armour could be +1" for Mags) should be possible .... hope so ... this is a critical project  ;)

well it kind of depends on who is building said BB... the reality like it or not is you cant build the OTL Hood on 35K SHP.  so your looking at like 1920 before she can be layed down.

The final version Hooper posted is about the closest you can get (admitedly the 16" is a deviation but its still close)

[hooper82]

i'm guessing 41k tons (full Hood size ;D) 8 x 15" and 30 knots and still decent armour (armour could be +1" for Mags) should be possible .... hope so ... this is a critical project  ;)

I tried, I really did...but like Tan said, you just can't get 30knots out of 35k SHP per shaft.  Need more power captain!!!  It should be possible 1920...expect an engine upgrade =)  To get those 30 knots (in 1917 with SS2), it has to be smaller, and throw any idea of "balanced design" out the window.

[hooper82]

My last 1kton Destroyers.  Laid down in 1916/HY2, I couldn't find a design for them, so -

N Class, UNK Destroyer laid down 1916 - REVISION 1.21

Displacement:
   1,000 t light; 1,045 t standard; 1,295 t normal; 1,494 t full load

Dimensions: Length overall / water x beam x draught
   380.66 ft / 372.00 ft x 31.00 ft x 10.00 ft (normal load)
   116.03 m / 113.39 m x 9.45 m  x 3.05 m

Armament:
      4 - 4.72" / 120 mm guns in single mounts, 57.00lbs / 25.85kg shells, 1916 Model
     Breech loading guns in deck mounts
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      2 - 1.57" / 40.0 mm guns (1x2 guns), 2.00lbs / 0.91kg shells, 1917 Model
     Anti-aircraft guns in deck mount
     on centreline aft, all raised guns - superfiring
      2 - 1.00" / 25.4 mm guns (1x2 guns), 0.50lbs / 0.23kg shells, 1916 Model
     Anti-aircraft guns in deck mount
     on centreline forward, all raised guns - superfiring
   Weight of broadside 233 lbs / 106 kg
   Shells per gun, main battery: 150
   6 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.00" / 25 mm   0.50" / 13 mm            -
   4th:   0.50" / 13 mm         -               -
   5th:   0.50" / 13 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 20,584 shp / 15,356 Kw = 30.01 kts
   Range 8,500nm at 12.00 kts
   Bunker at max displacement = 449 tons

Complement:
   107 - 140

Cost:
   £0.230 million / $0.921 million

Distribution of weights at normal displacement:
   Armament: 27 tons, 2.1 %
   Armour: 10 tons, 0.8 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 10 tons, 0.8 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 594 tons, 45.9 %
   Hull, fittings & equipment: 299 tons, 23.1 %
   Fuel, ammunition & stores: 295 tons, 22.8 %
   Miscellaneous weights: 70 tons, 5.4 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     346 lbs / 157 Kg = 6.6 x 4.7 " / 120 mm shells or 0.3 torpedoes
   Stability (Unstable if below 1.00): 1.44
   Metacentric height 1.6 ft / 0.5 m
   Roll period: 10.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.21
   Seaboat quality  (Average = 1.00): 1.00

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.393
   Length to Beam Ratio: 12.00 : 1
   'Natural speed' for length: 19.29 kts
   Power going to wave formation at top speed: 57 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   Bow angle (Positive = bow angles forward): 30.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      15.00 ft / 4.57 m
      - Forecastle (20 %):   12.00 ft / 3.66 m
      - Mid (40 %):      12.00 ft / 3.66 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:   10.44 ft / 3.18 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 170.0 %
      - Above water (accommodation/working, high = better): 80.1 %
   Waterplane Area: 7,072 Square feet or 657 Square metres
   Displacement factor (Displacement / loading): 71 %
   Structure weight / hull surface area: 26 lbs/sq ft or 127 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 0.59
      - Overall: 0.50
   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

15t ASW - 45 Depth Charges, 2 Rails (1910 Tech)
25t Long Range Wireless
24t 6+6 Torpedoes (1913 Tech)
6t Builders Reserve

Range (449t Fuel Oil)
8,500nm @ 12 kts
3,330nm @ 18 kts
1,000nm @ 28 kts

4.72"/50, Mark 6 (1916), 57lb Shell, ROF 8-10
1.57"/50, Mark 1 (1917), 2lb Shell, QF, AA, ROF 100
1"/50, Mark 1 (1916), 0.5lb Shell, QF, AA, ROF 300