Testing your Repulse

[Jefgte]

Interresting Challenge,
SS a Repulse for your Fleet with minor modifs.


http://www.youtube.com/watch?v=qhUByERf7iE&feature=related


Here is Peruvian Repulse for a 220m dry dock with 3T2x340 - LD in 1918 - 30kts - protection against 12" shells.

Peruvian Repulse, Peru BC laid down 1918 (Engine 1916)

Displacement:
   21 850 t light; 22 864 t standard; 24 130 t normal; 25 144 t full load

Dimensions: Length overall / water x beam x draught
   721.61 ft / 718.50 ft x 85.30 ft x 27.56 ft (normal load)
   219.95 m / 219.00 m x 26.00 m  x 8.40 m

Armament:
      6 - 13.39" / 340 mm guns (3x2 guns), 1 199.24lbs / 543.97kg shells, 1918 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread, 1 raised mount
     Aft Main mounts separated by engine room
      12 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.91kg shells, 1918 Model
     Breech loading guns in casemate mounts
     on side, evenly spread
      8 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1918 Model
     Quick firing guns in deck mounts
     on side, evenly spread, all raised mounts
      4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1918 Model
     Machine guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 7 936 lbs / 3 600 kg
   Shells per gun, main battery: 118

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   9.06" / 230 mm   531.50 ft / 162.00 m   12.73 ft / 3.88 m
   Ends:   3.15" / 80 mm   170.60 ft / 52.00 m   10.17 ft / 3.10 m
     16.40 ft / 5.00 m Unarmoured ends
     Main Belt covers 114 % of normal length
     Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead:
      1.57" / 40 mm   531.50 ft / 162.00 m   27.43 ft / 8.36 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   9.06" / 230 mm   4.72" / 120 mm      9.06" / 230 mm
   2nd:   0.79" / 20 mm         -               -
   3rd:   0.79" / 20 mm         -               -
   4th:   0.50" / 13 mm         -               -

   - Armour deck: 2.56" / 65 mm, Conning tower: 9.06" / 230 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 4 shafts, 107 975 shp / 80 549 Kw = 30.10 kts
   Range 7 000nm at 12.00 kts
   Bunker at max displacement = 2 280 tons

Complement:
   967 - 1 258

Cost:
   £4.323 million / $17.290 million

Distribution of weights at normal displacement:
   Armament: 992 tons, 4.1 %
   Armour: 6 947 tons, 28.8 %
      - Belts: 2 733 tons, 11.3 %
      - Torpedo bulkhead: 849 tons, 3.5 %
      - Armament: 1 269 tons, 5.3 %
      - Armour Deck: 1 933 tons, 8.0 %
      - Conning Tower: 163 tons, 0.7 %
   Machinery: 4 023 tons, 16.7 %
   Hull, fittings & equipment: 9 557 tons, 39.6 %
   Fuel, ammunition & stores: 2 281 tons, 9.5 %
   Miscellaneous weights: 330 tons, 1.4 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     28 203 lbs / 12 793 Kg = 23.5 x 13.4 " / 340 mm shells or 4.1 torpedoes
   Stability (Unstable if below 1.00): 1.09
   Metacentric height 4.6 ft / 1.4 m
   Roll period: 16.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.62
   Seaboat quality  (Average = 1.00): 1.16

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.500
   Length to Beam Ratio: 8.42 : 1
   'Natural speed' for length: 26.80 kts
   Power going to wave formation at top speed: 51 %
   Trim (Max stability = 0, Max steadiness = 100): 60
   Bow angle (Positive = bow angles forward): 6.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      29.53 ft / 9.00 m
      - Forecastle (20 %):   22.64 ft / 6.90 m
      - Mid (50 %):      18.77 ft / 5.72 m
      - Quarterdeck (18 %):   18.77 ft / 5.72 m
      - Stern:      18.77 ft / 5.72 m
      - Average freeboard:   20.67 ft / 6.30 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 113.8 %
      - Above water (accommodation/working, high = better): 158.5 %
   Waterplane Area: 40 836 Square feet or 3 794 Square metres
   Displacement factor (Displacement / loading): 104 %
   Structure weight / hull surface area: 159 lbs/sq ft or 775 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.98
      - Longitudinal: 1.21
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform

[mentat]

Nicely shoehorned in.

Thanks for vid clip of Repulse - hadn't seen that one before - she looks great blasting away, splendid WW2 propaganda stuff - but seems to sit a bit low in the heavy swell

On the design - (main belt doesn't fully cover, bit of unarmoured end) are the belt lengths as intended?

[Walter]

Not sure if I will build such a vessel here. One of the versions of the Ise that I have features a Repulse layout. It lacks Repulse speed and has a lot of armor.

Here is the IJN version of Repulse which I designed back in 2006 for Wesworld. Maybe I should recycle this one for Navalism. :)
(three ships were constructed and they were completed in 1936)

Tachibana, Japan Battle Cruiser laid down 1933

Displacement:
33,460 t light; 35,130 t standard; 38,183 t normal; 40,624 t full load

Dimensions: Length overall / water x beam x draught
822.30 ft / 800.00 ft x 90.00 ft x 32.00 ft (normal load)
250.64 m / 243.84 m x 27.43 m x 9.75 m

Armament:
6 - 14.96" / 380 mm guns (3x2 guns), 2,000.00lbs / 907.18kg shells, 1933 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
22 - 5.00" / 127 mm guns (11x2 guns), 55.12lbs / 25.00kg shells, 1930 Model
Dual purpose guns in deck mounts with hoists
on side, all amidships, 7 raised mounts - superfiring
32 - 1.57" / 40.0 mm guns (4x8 guns), 2.00lbs / 0.91kg shells, 1923 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
30 - 0.98" / 25.0 mm guns (10x3 guns), 0.57lbs / 0.26kg shells, 1933 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 4 raised mounts
32 - 0.52" / 13.2 mm guns (8x4 guns), 0.09lbs / 0.04kg shells, 1930 Model
Machine guns in deck mounts
on side, evenly spread, 4 raised mounts
Weight of broadside 13,296 lbs / 6,031 kg
Shells per gun, main battery: 120

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 13.0" / 330 mm 508.53 ft / 155.00 m 13.78 ft / 4.20 m
Ends: Unarmoured
Main Belt covers 98% of normal length

- Torpedo Bulkhead:
1.77" / 45 mm 508.53 ft / 155.00 m 29.86 ft / 9.10 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 14.2" / 360 mm 6.69" / 170 mm 13.4" / 340 mm
2nd: 3.00" / 76 mm 1.00" / 25 mm 2.00" / 51 mm
3rd: 1.00" / 25 mm 1.00" / 25 mm -
4th: 1.00" / 25 mm 1.00" / 25 mm -
5th: 0.50" / 13 mm 0.50" / 13 mm -

- Armour deck: 4.33" / 110 mm, Conning tower: 2.76" / 70 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 177,466 shp / 132,389 Kw = 33.00 kts
Range 7,550nm at 18.00 kts
Bunker at max displacement = 5,494 tons

Complement:
1,365 - 1,775

Cost:
£14.666 million / $58.665 million

Distribution of weights at normal displacement:
Armament: 1,437 tons, 3.8%
Armour: 11,731 tons, 30.7%
- Belts: 3,859 tons, 10.1%
- Torpedo bulkhead: 995 tons, 2.6%
- Armament: 2,496 tons, 6.5%
- Armour Deck: 4,314 tons, 11.3%
- Conning Tower: 67 tons, 0.2%
Machinery: 5,171 tons, 13.5%
Hull, fittings & equipment: 14,321 tons, 37.5%
Fuel, ammunition & stores: 4,723 tons, 12.4%
Miscellaneous weights: 800 tons, 2.1%

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
51,077 lbs / 23,168 Kg = 30.5 x 15.0 " / 380 mm shells or 6.7 torpedoes
Stability (Unstable if below 1.00): 1.08
Metacentric height 5.0 ft / 1.5 m
Roll period: 17.0 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.82
Seaboat quality (Average = 1.00): 1.01

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.580
Length to Beam Ratio: 8.89 : 1
'Natural speed' for length: 32.29 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 4.00 ft / 1.22 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 31.70 ft / 9.66 m
- Forecastle (20%): 23.70 ft / 7.22 m
- Mid (75%): 23.70 ft / 7.22 m
- Quarterdeck (15%): 21.70 ft / 6.61 m
- Stern: 21.70 ft / 6.61 m
- Average freeboard: 23.94 ft / 7.30 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 97.4%
- Above water (accommodation/working, high = better): 176.9%
Waterplane Area: 53,843 Square feet or 5,002 Square metres
Displacement factor (Displacement / loading): 111%
Structure weight / hull surface area: 181 lbs/sq ft or 883 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.26
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

[Jefgte]

On the design - (main belt doesn't fully cover, bit of unarmoured end) are the belt lengths as intended?

A little SS mistake... not a problem, I could increase the lenght of the belt to 164m.


;)

[1Big Rich]

Excellent video, Jef!  Is this the start of Peru's BC squadron?

[Logi]

Bomb their docks first thing!!!!! ;D

Edit: Just noticed Walter

Hull form characteristics:
Hull has a flush deck
and transom stern

It has a transom stern on it, couldn't build it here even if you wanted to.

[Logi]

My Take

Repair, RRC Battlecruiser laid down 1918 (Engine 1916)

Displacement:
   31,476 t light; 32,761 t standard; 34,367 t normal; 35,652 t full load

Dimensions: Length overall / water x beam x draught
   810.00 ft / 810.00 ft x 90.00 ft x 30.00 ft (normal load)
   246.89 m / 246.89 m x 27.43 m  x 9.14 m

Armament:
      6 - 14.00" / 356 mm guns (3x2 guns), 1,650.00lbs / 748.43kg shells, 1918 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, majority forward, 1 raised mount - superfiring
      16 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1918 Model
     Quick firing guns in casemate mounts
     on side, all amidships
      8 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1918 Model
     Anti-aircraft guns in deck mounts
     on side, all amidships
      8 - 0.98" / 25.0 mm guns in single mounts, 0.48lbs / 0.22kg shells, 1918 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 10,577 lbs / 4,798 kg
   Shells per gun, main battery: 100
   8 - 21.0" / 533.4 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   12.0" / 305 mm   500.00 ft / 152.40 m   15.00 ft / 4.57 m
   Ends:   6.00" / 152 mm   310.00 ft / 94.49 m   25.00 ft / 7.62 m
   Upper:   4.00" / 102 mm   500.00 ft / 152.40 m   10.00 ft / 3.05 m
     Main Belt covers 95 % of normal length

   - Torpedo Bulkhead:
      2.00" / 51 mm   500.00 ft / 152.40 m   25.00 ft / 7.62 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   12.0" / 305 mm   6.00" / 152 mm      10.0" / 254 mm
   2nd:   2.00" / 51 mm   1.00" / 25 mm      1.00" / 25 mm
   3rd:   1.00" / 25 mm         -               -
   4th:   1.00" / 25 mm         -               -

   - Armour deck: 3.00" / 76 mm, Conning tower: 10.00" / 254 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 128,821 shp / 96,100 Kw = 30.00 kts
   Range 7,000nm at 12.00 kts
   Bunker at max displacement = 2,892 tons

Complement:
   1,261 - 1,640

Cost:
   £5.418 million / $21.672 million

Distribution of weights at normal displacement:
   Armament: 1,114 tons, 3.2 %
   Armour: 12,034 tons, 35.0 %
      - Belts: 6,394 tons, 18.6 %
      - Torpedo bulkhead: 925 tons, 2.7 %
      - Armament: 1,664 tons, 4.8 %
      - Armour Deck: 2,824 tons, 8.2 %
      - Conning Tower: 228 tons, 0.7 %
   Machinery: 4,800 tons, 14.0 %
   Hull, fittings & equipment: 13,138 tons, 38.2 %
   Fuel, ammunition & stores: 2,891 tons, 8.4 %
   Miscellaneous weights: 390 tons, 1.1 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     46,952 lbs / 21,297 Kg = 34.2 x 14.0 " / 356 mm shells or 6.7 torpedoes
   Stability (Unstable if below 1.00): 1.12
   Metacentric height 5.3 ft / 1.6 m
   Roll period: 16.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 60 %
         - Recoil effect (Restricted arc if above 1.00): 0.59
   Seaboat quality  (Average = 1.00): 1.08

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.550
   Length to Beam Ratio: 9.00 : 1
   'Natural speed' for length: 28.46 kts
   Power going to wave formation at top speed: 48 %
   Trim (Max stability = 0, Max steadiness = 100): 55
   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:      25.00 ft / 7.62 m
      - Forecastle (20 %):   22.00 ft / 6.71 m
      - Mid (50 %):      20.00 ft / 6.10 m
      - Quarterdeck (15 %):   20.00 ft / 6.10 m
      - Stern:      20.00 ft / 6.10 m
      - Average freeboard:   20.94 ft / 6.38 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 92.3 %
      - Above water (accommodation/working, high = better): 145.4 %
   Waterplane Area: 50,876 Square feet or 4,727 Square metres
   Displacement factor (Displacement / loading): 111 %
   Structure weight / hull surface area: 177 lbs/sq ft or 865 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.06
      - Longitudinal: 0.97
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent

[Walter]

It has a transom stern on it, couldn't build it here even if you wanted to.

A) It is a 1933 design.
B) Transom stern is there for the Hain Mat System for the recovery of float planes while the ship is moving.

[maddox]

A tad bigger than the IRL version, but that can be see as the result of the added bulges during the first refit in 1921.
I must say , I like her. But the larger Montmedy fills the role better for Nverse France.

Échec, France croiseur de bataille laid down 1918 (Engine 1916)

Displacement:
   30.646 t light; 32.395 t standard; 34.889 t normal; 36.884 t full load

Dimensions: Length overall / water x beam x draught
   790,68 ft / 787,40 ft x 90,22 ft (Bulges 98,43 ft) x 27,89 ft (normal load)
   241,00 m / 240,00 m x 27,50 m (Bulges 30,00 m)  x 8,50 m

Armament:
      6 - 14,96" / 380 mm guns (3x2 guns), 1.807,79lbs / 820,00kg shells, 1918 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, majority forward, 1 raised mount - superfiring
      16 - 5,51" / 140 mm guns (8x2 guns), 92,59lbs / 42,00kg shells, 1918 Model
     Quick firing guns in deck mounts with hoists
     on side, all amidships, 2 raised mounts - superfiring
      6 - 1,46" / 37,0 mm guns in single mounts, 1,55lbs / 0,70kg shells, 1918 Model
     Anti-aircraft guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 12.338 lbs / 5.596 kg
   Shells per gun, main battery: 150

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   9,50" / 241 mm   519,69 ft / 158,40 m   17,00 ft / 5,18 m
   Ends:   Unarmoured
     Main Belt covers 102% of normal length
     Main belt does not fully cover magazines and engineering spaces

   - Torpedo Bulkhead and Bulges:
      2,00" / 51 mm   519,69 ft / 158,40 m   26,20 ft / 7,99 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   12,0" / 305 mm   7,00" / 178 mm      12,0" / 305 mm
   2nd:   2,00" / 51 mm   1,00" / 25 mm      3,00" / 76 mm

   - Armour deck: 3,00" / 76 mm, Conning tower: 12,00" / 305 mm

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 4 shafts, 134.483 shp / 100.324 Kw = 30,00 kts
   Range 6.000nm at 16,00 kts
   Bunker at max displacement = 4.489 tons

Complement:
   1.276 - 1.659

Cost:
   £5,941 million / $23,764 million

Distribution of weights at normal displacement:
   Armament: 1.424 tons, 4,1%
   Armour: 9.821 tons, 28,1%
      - Belts: 3.539 tons, 10,1%
      - Torpedo bulkhead: 1.008 tons, 2,9%
      - Armament: 2.208 tons, 6,3%
      - Armour Deck: 2.791 tons, 8,0%
      - Conning Tower: 276 tons, 0,8%
   Machinery: 5.011 tons, 14,4%
   Hull, fittings & equipment: 13.790 tons, 39,5%
   Fuel, ammunition & stores: 4.243 tons, 12,2%
   Miscellaneous weights: 600 tons, 1,7%

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     44.313 lbs / 20.100 Kg = 26,5 x 15,0 " / 380 mm shells or 6,4 torpedoes
   Stability (Unstable if below 1.00): 1,11
   Metacentric height 5,3 ft / 1,6 m
   Roll period: 18,0 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0,66
   Seaboat quality  (Average = 1.00): 1,23

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,565
   Length to Beam Ratio: 8,00 : 1
   'Natural speed' for length: 28,06 kts
   Power going to wave formation at top speed: 50 %
   Trim (Max stability = 0, Max steadiness = 100): 58
   Bow angle (Positive = bow angles forward): -5,00 degrees
   Stern overhang: 3,28 ft / 1,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      34,45 ft / 10,50 m
      - Forecastle (19%):   22,97 ft / 7,00 m
      - Mid (50%):      22,97 ft / 7,00 m
      - Quarterdeck (15%):   22,97 ft / 7,00 m
      - Stern:      22,97 ft / 7,00 m
      - Average freeboard:   23,84 ft / 7,27 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 103,8%
      - Above water (accommodation/working, high = better): 172,4%
   Waterplane Area: 50.282 Square feet or 4.671 Square metres
   Displacement factor (Displacement / loading): 110%
   Structure weight / hull surface area: 183 lbs/sq ft or 893 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,99
      - Longitudinal: 1,15
      - 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

[mentat]

Nice - I like Echec

Wouldn't she be great to police the Colonies - show the flag - put down the natives (can still say that in 1916?!)

And to trump her the opponent has to really show their hand ...

- or am I mixing up chess with card games? :D

[Jefgte]

...Is this the start of Peru's BC squadron?

With 220m dry docks & slipways, Peru couldn't built 28000t BC but 30-32kts ACs or 24-27kts ECs.


;)