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1

Thursday, July 7th 2005, 3:27am

Ships for NPCs

I've been working on simming some ships of the NPC nations...starting with Brazil.

I'd like to suggest that the WesWorld version of the Minas Gerais-class dreadnoughts be equipped with turbines, instead of the @ VTEs, as I absolutely cannot get proper hull strength - or armour coverage - with the latter.

Here's my proposal for an update of their light cruisers:

Bahia, Brazilian Light Cruiser laid down 1908 (Engine 1926)

Displacement:
2,617 t light; 2,765 t standard; 2,981 t normal; 3,154 t full load

Dimensions: Length overall / water x beam x draught
391.75 ft / 390.00 ft x 39.00 ft x 13.45 ft (normal load)
119.41 m / 118.87 m x 11.89 m x 4.10 m

Armament:
4 - 6.00" / 152 mm guns (2x2 guns), 108.00lbs / 48.99kg shells, 1926 Model
Quick firing guns in deck mounts with hoists
on centreline ends, evenly spread
6 - 4.72" / 120 mm guns in single mounts, 45.00lbs / 20.41kg shells, 1908 Model
Quick firing guns in deck mounts with hoists
on side, evenly spread
2 - 3.00" / 76.2 mm guns in single mounts, 13.00lbs / 5.90kg shells, 1908 Model
Quick firing guns in deck mounts
on side, all amidships
4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1908 Model
Quick firing guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 728 lbs / 330 kg
Shells per gun, main battery: 200
2 - 21.0" / 533.4 mm above water torpedoes

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

- Armour deck: 1.50" / 38 mm, Conning tower: 3.00" / 76 mm

Machinery:
Oil fired boilers, steam turbines,
Direct drive, 3 shafts, 27,862 shp / 20,785 Kw = 28.00 kts
Range 8,000nm at 10.00 kts (Bunkerage = 388 tons)

Complement:
201 - 262

Cost:
£0.298 million / $1.192 million

Distribution of weights at normal displacement:
Armament: 97 tons, 3.3 %
Armour: 352 tons, 11.8 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 55 tons, 1.8 %
- Armour Deck: 284 tons, 9.5 %
- Conning Tower: 13 tons, 0.4 %
Machinery: 892 tons, 29.9 %
Hull, fittings & equipment: 1,226 tons, 41.1 %
Fuel, ammunition & stores: 364 tons, 12.2 %
Miscellaneous weights: 50 tons, 1.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2,234 lbs / 1,013 Kg = 20.7 x 6.0 " / 152 mm shells or 0.6 torpedoes
Stability (Unstable if below 1.00): 1.05
Metacentric height 1.3 ft / 0.4 m
Roll period: 14.2 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.78
Seaboat quality (Average = 1.00): 1.03

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.510
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 19.75 kts
Power going to wave formation at top speed: 60 %
Trim (Max stability = 0, Max steadiness = 100): 68
Bow angle (Positive = bow angles forward): 5.00 degrees
Stern overhang: -2.00 ft / -0.61 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 20.00 ft / 6.10 m
- Forecastle (15 %): 20.00 ft / 6.10 m
- Mid (20 %): 20.00 ft / 6.10 m (13.00 ft / 3.96 m aft of break)
- Quarterdeck (15 %): 13.00 ft / 3.96 m
- Stern: 13.00 ft / 3.96 m
- Average freeboard: 14.40 ft / 4.39 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 124.7 %
- Above water (accommodation/working, high = better): 119.0 %
Waterplane Area: 10,227 Square feet or 950 Square metres
Displacement factor (Displacement / loading): 101 %
Structure weight / hull surface area: 70 lbs/sq ft or 341 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.92
- Longitudinal: 1.77
- Overall: 0.98
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform

2

Thursday, July 7th 2005, 5:21am

So they replaced four of the 4.7s with 6 inch guns and removed two torpedo tubes? (one pair or a tube each side?)

(swapping two 3 pounders for four machine guns I can see).

I'm guessing they are longer then historical by 10 feet (380 feet long and 401.5 feet overall...according to Jane's 1936).

3

Thursday, July 7th 2005, 5:26pm

The ref I had said only two fish...but that's easily fixed.

As for the length, the 380' is "post-to-post" - stem to rudder post. The actual lwl will be a tad longer, so I guesstimated it.

4

Friday, July 8th 2005, 12:24am

Revised:

Bahia, Brazilian Light Cruiser laid down 1908 (Engine 1926)

Displacement:
2,617 t light; 2,765 t standard; 2,981 t normal; 3,154 t full load

Dimensions: Length overall / water x beam x draught
391.75 ft / 390.00 ft x 39.00 ft x 13.45 ft (normal load)
119.41 m / 118.87 m x 11.89 m x 4.10 m

Armament:
4 - 6.00" / 152 mm guns (2x2 guns), 108.00lbs / 48.99kg shells, 1926 Model
Quick firing guns in deck mounts with hoists
on centreline ends, evenly spread
6 - 4.72" / 120 mm guns in single mounts, 45.00lbs / 20.41kg shells, 1908 Model
Quick firing guns in deck mounts
on side ends, evenly spread
2 - 3.00" / 76.2 mm guns in single mounts, 13.00lbs / 5.90kg shells, 1908 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1908 Model
Breech loading guns in deck mounts
on side, evenly spread, all raised mounts

Weight of broadside 728 lbs / 330 kg
Shells per gun, main battery: 200

4 - 21.0" / 533.4 mm above water torpedoes

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

- Armour deck: 1.50" / 38 mm, Conning tower: 3.00" / 76 mm

Machinery:
Oil fired boilers, steam turbines,
Direct drive, 3 shafts, 28,000 shp / 20,888 Kw = 28.03 kts
Range 8,000nm at 10.00 kts (Bunkerage = 388 tons)

Complement:
201 - 262

Cost:
£0.299 million / $1.194 million

Distribution of weights at normal displacement:
Armament: 97 tons, 3.3 %
Armour: 350 tons, 11.8 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 53 tons, 1.8 %
- Armour Deck: 284 tons, 9.5 %
- Conning Tower: 13 tons, 0.4 %
Machinery: 896 tons, 30.1 %
Hull, fittings & equipment: 1,224 tons, 41.1 %
Fuel, ammunition & stores: 364 tons, 12.2 %
Miscellaneous weights: 50 tons, 1.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2,326 lbs / 1,055 Kg = 21.5 x 6.0 " / 152 mm shells or 0.6 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 1.5 ft / 0.4 m
Roll period: 13.5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.61
Seaboat quality (Average = 1.00): 1.06

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.510
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 19.75 kts
Power going to wave formation at top speed: 60 %
Trim (Max stability = 0, Max steadiness = 100): 66
Bow angle (Positive = bow angles forward): 5.00 degrees
Stern overhang: -2.00 ft / -0.61 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 20.00 ft / 6.10 m
- Forecastle (15 %): 20.00 ft / 6.10 m
- Mid (20 %): 20.00 ft / 6.10 m (13.00 ft / 3.96 m aft of break)
- Quarterdeck (20 %): 13.00 ft / 3.96 m
- Stern: 13.00 ft / 3.96 m
- Average freeboard: 14.40 ft / 4.39 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 125.2 %
- Above water (accommodation/working, high = better): 107.4 %
Waterplane Area: 10,227 Square feet or 950 Square metres
Displacement factor (Displacement / loading): 100 %
Structure weight / hull surface area: 70 lbs/sq ft or 340 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.84
- Overall: 1.02
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform


---

And a rebuild for Peru's Almirante Grau-class cruisers, based on historical plans (don't know if they were carried out...)

Almirante Grau, Peruvian Light Cruiser laid down 1905 (Engine 1925)

Displacement:
2,964 t light; 3,077 t standard; 3,220 t normal; 3,334 t full load

Dimensions: Length overall / water x beam x draught
376.88 ft / 375.00 ft x 40.50 ft x 14.00 ft (normal load)
114.87 m / 114.30 m x 12.34 m x 4.27 m

Armament:
4 - 6.00" / 152 mm guns (2x2 guns), 108.00lbs / 48.99kg shells, 1925 Model
Quick firing guns in deck mounts with hoists
on centreline ends, evenly spread
6 - 3.00" / 76.2 mm guns in single mounts, 14.00lbs / 6.35kg shells, 1905 Model
Quick firing guns in deck mounts
on side, evenly spread
8 - 1.18" / 30.0 mm guns in single mounts, 1.00lbs / 0.45kg shells, 1905 Model
Quick firing guns in deck mounts
on side, evenly spread
4 guns in hull casemates - Limited use in all but light seas
1 - 3.00" / 76.2 mm guns in single mounts, 14.00lbs / 6.35kg shells, 1925 Model
Anti-aircraft gun in deck mount
on centreline aft
Weight of broadside 538 lbs / 244 kg
Shells per gun, main battery: 150
2 - 18.0" / 457.2 mm submerged torpedo tubes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.00" / 76 mm - -
2nd: 2.00" / 51 mm - -
4th: 1.00" / 25 mm - -

- Armour deck: 1.50" / 38 mm, Conning tower: 3.00" / 76 mm

Machinery:
Oil fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 22,419 ihp / 16,724 Kw = 26.00 kts
Range 3,700nm at 10.00 kts (Bunkerage = 257 tons)

Complement:
213 - 277

Cost:
£0.336 million / $1.342 million

Distribution of weights at normal displacement:
Armament: 67 tons, 2.1 %
Armour: 358 tons, 11.1 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 55 tons, 1.7 %
- Armour Deck: 289 tons, 9.0 %
- Conning Tower: 14 tons, 0.4 %
Machinery: 1,256 tons, 39.0 %
Hull, fittings & equipment: 1,259 tons, 39.1 %
Fuel, ammunition & stores: 255 tons, 7.9 %
Miscellaneous weights: 25 tons, 0.8 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,842 lbs / 835 Kg = 17.1 x 6.0 " / 152 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.22
Metacentric height 1.9 ft / 0.6 m
Roll period: 12.5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.41
Seaboat quality (Average = 1.00): 1.20

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.530
Length to Beam Ratio: 9.26 : 1
'Natural speed' for length: 19.36 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 58
Bow angle (Positive = bow angles forward): 5.00 degrees
Stern overhang: -2.00 ft / -0.61 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.50 ft / 6.55 m
- Forecastle (10 %): 20.50 ft / 6.25 m
- Mid (20 %): 20.50 ft / 6.25 m (13.50 ft / 4.11 m aft of break)
- Quarterdeck (20 %): 13.50 ft / 4.11 m
- Stern: 13.50 ft / 4.11 m
- Average freeboard: 14.94 ft / 4.55 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 150.2 %
- Above water (accommodation/working, high = better): 134.9 %
Waterplane Area: 10,403 Square feet or 966 Square metres
Displacement factor (Displacement / loading): 92 %
Structure weight / hull surface area: 71 lbs/sq ft or 346 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 2.03
- Overall: 1.06
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
Good seaboat, rides out heavy weather easily

5

Friday, July 8th 2005, 12:58am

Its a little better armed then historical in places, but still quite sinkable....:)