Gran Colombia - 1905 Construction

[The Rock Doctor]

Three classes proposed, for moderator review given that it's our "skip year".

Invencible Class Battleship x 2

Puerto Espana Class Cruiser x 1

Pescador Class Monitor x 1

[The Rock Doctor]

Invencible Class Battleships

Two units to be laid down on 1 July 1905, Invencible and Irresistible.  They represent the cutting edge of Gran Colombian battleship technology, such as it is.



Invencible, laid down 1905

Displacement:
   16,053 t light; 17,036 t standard; 18,937 t normal; 20,457 t full load

Dimensions: Length overall / water x beam x draught
   557.74 ft / 557.74 ft x 82.02 ft x 24.15 ft (normal load)
   170.00 m / 170.00 m x 25.00 m  x 7.36 m

Armament:
      6 - 12.01" / 305 mm guns (3x2 guns), 865.70lbs / 392.67kg shells, 1905 Model
     Breech loading guns in turrets (on barbettes)
     on centreline, evenly spread
     Aft Main mounts separated by engine room
      16 - 5.51" / 140 mm guns in single mounts, 83.72lbs / 37.97kg shells, 1905 Model
     Breech loading guns in casemate mounts
     on side, all amidships
     16 guns in hull casemates - Limited use in heavy seas
      8 - 3.94" / 100 mm guns in single mounts, 30.51lbs / 13.84kg shells, 1905 Model
     Breech loading guns in casemate mounts
     on side, all amidships
      3 - 3.94" / 100 mm guns in single mounts, 30.51lbs / 13.84kg shells, 1905 Model
     Breech loading guns in deck mounts
     on side, all aft, all raised mounts - superfiring
      12 - 1.85" / 47.0 mm guns in single mounts, 3.17lbs / 1.44kg shells, 1905 Model
     Breech loading guns in deck mounts
     on side, evenly spread, 8 raised mounts
   Weight of broadside 6,907 lbs / 3,133 kg
   Shells per gun, main battery: 150

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.0" / 330 mm   362.53 ft / 110.50 m   10.86 ft / 3.31 m
   Ends:   4.33" / 110 mm   195.18 ft / 59.49 m   10.86 ft / 3.31 m
   Upper:   6.50" / 165 mm   362.53 ft / 110.50 m   8.01 ft / 2.44 m
     Main Belt covers 100 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   13.0" / 330 mm   6.50" / 165 mm      13.0" / 330 mm
   2nd:   6.50" / 165 mm         -               -
   3rd:   1.30" / 33 mm         -               -
   4th:   1.30" / 33 mm         -               -
   5th:   0.87" / 22 mm         -               -

   - Armour deck: 2.36" / 60 mm, Conning tower: 12.99" / 330 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 4 shafts, 20,000 shp / 14,920 Kw = 19.43 kts
   Range 8,000nm at 10.00 kts (Bunkerage = 3,421 tons)

Complement:
   806 - 1,049

Cost:
   £1.520 million / $6.082 million

Distribution of weights at normal displacement:
   Armament: 863 tons, 4.6 %
   Armour: 6,859 tons, 36.2 %
      - Belts: 3,383 tons, 17.9 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 1,815 tons, 9.6 %
      - Armour Deck: 1,462 tons, 7.7 %
      - Conning Tower: 199 tons, 1.1 %
   Machinery: 1,667 tons, 8.8 %
   Hull, fittings & equipment: 6,614 tons, 34.9 %
   Fuel, ammunition & stores: 2,884 tons, 15.2 %
   Miscellaneous weights: 50 tons, 0.3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     32,408 lbs / 14,700 Kg = 37.4 x 12.0 " / 305 mm shells or 3.6 torpedoes
   Stability (Unstable if below 1.00): 1.26
   Metacentric height 5.6 ft / 1.7 m
   Roll period: 14.5 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.47
   Seaboat quality  (Average = 1.00): 1.72

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.600
   Length to Beam Ratio: 6.80 : 1
   'Natural speed' for length: 23.62 kts
   Power going to wave formation at top speed: 39 %
   Trim (Max stability = 0, Max steadiness = 100): 41
   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:      26.25 ft / 8.00 m
      - Forecastle (20 %):   19.69 ft / 6.00 m
      - Mid (50 %):      19.69 ft / 6.00 m
      - Quarterdeck (15 %):   19.69 ft / 6.00 m
      - Stern:      19.69 ft / 6.00 m
      - Average freeboard:   20.21 ft / 6.16 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 64.9 %
      - Above water (accommodation/working, high = better): 155.6 %
   Waterplane Area: 33,458 Square feet or 3,108 Square metres
   Displacement factor (Displacement / loading): 110 %
   Structure weight / hull surface area: 139 lbs/sq ft or 680 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.55
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather


Note:  edited to correct casemate locations, and to increase machinery to 5,000 hp per shaft per new rules.

[Ithekro]

Pretty

[The Rock Doctor]

The funnel stripes, or the whole thing?

Second class is the Puerta Espana class belted cruiser.  This is not necessarily the best thought-out design Gran Colombia's put out.  Speed, armor, and range are all "okay" but the design as a whole is not really optimized either for trade protection or anti-destroyer ops.  It'll be a learning experience.

Puerta Espana, laid down 1905

Displacement:
   3,064 t light; 3,200 t standard; 3,738 t normal; 4,168 t full load

Dimensions: Length overall / water x beam x draught
   425.92 ft / 423.88 ft x 44.29 ft x 15.49 ft (normal load)
   129.82 m / 129.20 m x 13.50 m  x 4.72 m

Armament:
      4 - 5.51" / 140 mm guns in single mounts, 83.72lbs / 37.97kg shells, 1905 Model
     Breech loading guns in deck mounts with hoists
     on centreline ends, evenly spread, 1 raised mount
      2 - 5.51" / 140 mm guns in single mounts, 83.72lbs / 37.97kg shells, 1905 Model
     Breech loading guns in deck mounts with hoists
     on side, all amidships
      4 - 1.85" / 47.0 mm guns in single mounts, 3.17lbs / 1.44kg shells, 1905 Model
     Quick firing guns in deck mounts
     on side, evenly spread, 2 raised mounts
      4 - 0.31" / 8.0 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1905 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 515 lbs / 234 kg
   Shells per gun, main battery: 200
   4 - 18.0" / 457 mm above water torpedoes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   2.36" / 60 mm   282.15 ft / 86.00 m   7.97 ft / 2.43 m
   Ends:   1.18" / 30 mm   141.70 ft / 43.19 m   7.97 ft / 2.43 m
     Main Belt covers 102 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.18" / 30 mm   1.18" / 30 mm      1.18" / 30 mm
   2nd:   1.18" / 30 mm   1.18" / 30 mm      1.18" / 30 mm
   3rd:   1.18" / 30 mm         -               -
   4th:   0.47" / 12 mm         -               -

   - Armour deck: 1.18" / 30 mm, Conning tower: 2.36" / 60 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 3 shafts, 12,000 shp / 8,952 Kw = 22.12 kts
   Range 6,000nm at 10.00 kts (Bunkerage = 969 tons)

Complement:
   238 - 310

Cost:
   £0.301 million / $1.205 million

Distribution of weights at normal displacement:
   Armament: 64 tons, 1.7 %
   Armour: 581 tons, 15.6 %
      - Belts: 270 tons, 7.2 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 37 tons, 1.0 %
      - Armour Deck: 262 tons, 7.0 %
      - Conning Tower: 12 tons, 0.3 %
   Machinery: 1,000 tons, 26.8 %
   Hull, fittings & equipment: 1,388 tons, 37.1 %
   Fuel, ammunition & stores: 674 tons, 18.0 %
   Miscellaneous weights: 30 tons, 0.8 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     4,840 lbs / 2,196 Kg = 57.8 x 5.5 " / 140 mm shells or 1.0 torpedoes
   Stability (Unstable if below 1.00): 1.40
   Metacentric height 2.6 ft / 0.8 m
   Roll period: 11.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.28
   Seaboat quality  (Average = 1.00): 1.75

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.450
   Length to Beam Ratio: 9.57 : 1
   'Natural speed' for length: 20.59 kts
   Power going to wave formation at top speed: 43 %
   Trim (Max stability = 0, Max steadiness = 100): 40
   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:      23.29 ft / 7.10 m
      - Forecastle (20 %):   19.36 ft / 5.90 m
      - Mid (40 %):      19.36 ft / 5.90 m (11.48 ft / 3.50 m aft of break)
      - Quarterdeck (15 %):   11.48 ft / 3.50 m
      - Stern:      11.48 ft / 3.50 m
      - Average freeboard:   14.95 ft / 4.56 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 101.8 %
      - Above water (accommodation/working, high = better): 118.9 %
   Waterplane Area: 11,976 Square feet or 1,113 Square metres
   Displacement factor (Displacement / loading): 120 %
   Structure weight / hull surface area: 70 lbs/sq ft or 342 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.96
      - Longitudinal: 1.50
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[The Rock Doctor]

...and a river monitor for service in the Amazon.  She's got one big gun for shore bombardment work, a bit of armor, and some light guns to deal with war canoes and gunboats.  With a March '05 lay-down, she'd be completed just as the sim starts.   She'll also fit in the Type 0 drydock that will be built at Manaus sooner or later...

Pescador, laid down 1905

Displacement:
   812 t light; 844 t standard; 918 t normal; 977 t full load

Dimensions: Length overall / water x beam x draught
   239.50 ft / 229.66 ft x 32.81 ft x 6.56 ft (normal load)
   73.00 m / 70.00 m x 10.00 m  x 2.00 m

Armament:
      1 - 7.64" / 194 mm guns in single mounts, 222.78lbs / 101.05kg shells, 1905 Model
     Breech loading gun in a turret (on a barbette)
     on centreline forward, 1 raised gun
      4 - 1.85" / 47.0 mm guns in single mounts, 3.17lbs / 1.44kg shells, 1905 Model
     Quick firing guns in deck mounts
     on side, all amidships
      4 - 0.31" / 8.0 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1905 Model
     Machine guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 236 lbs / 107 kg
   Shells per gun, main battery: 100

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   2.17" / 55 mm   149.28 ft / 45.50 m   6.89 ft / 2.10 m
   Ends:   Unarmoured
     Main Belt covers 100 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   2.17" / 55 mm   0.87" / 22 mm      2.17" / 55 mm
   2nd:   0.87" / 22 mm         -               -

   - Armour deck: 1.18" / 30 mm, Conning tower: 2.17" / 55 mm

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 536 ihp / 400 Kw = 11.15 kts
   Range 2,200nm at 10.00 kts (Bunkerage = 133 tons)

Complement:
   83 - 108

Cost:
   £0.064 million / $0.256 million

Distribution of weights at normal displacement:
   Armament: 29 tons, 3.2 %
   Armour: 250 tons, 27.3 %
      - Belts: 97 tons, 10.5 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 23 tons, 2.5 %
      - Armour Deck: 126 tons, 13.7 %
      - Conning Tower: 4 tons, 0.5 %
   Machinery: 78 tons, 8.5 %
   Hull, fittings & equipment: 435 tons, 47.4 %
   Fuel, ammunition & stores: 106 tons, 11.5 %
   Miscellaneous weights: 20 tons, 2.2 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     2,569 lbs / 1,165 Kg = 11.5 x 7.6 " / 194 mm shells or 1.3 torpedoes
   Stability (Unstable if below 1.00): 1.23
   Metacentric height 1.4 ft / 0.4 m
   Roll period: 11.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.49
   Seaboat quality  (Average = 1.00): 1.29

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.650
   Length to Beam Ratio: 7.00 : 1
   'Natural speed' for length: 15.15 kts
   Power going to wave formation at top speed: 30 %
   Trim (Max stability = 0, Max steadiness = 100): 54
   Bow angle (Positive = bow angles forward): 5.00 degrees
   Stern overhang: 9.84 ft / 3.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      0.00 ft / 0.00 m
      - Forecastle (20 %):   9.84 ft / 3.00 m
      - Mid (50 %):      9.84 ft / 3.00 m
      - Quarterdeck (15 %):   9.84 ft / 3.00 m
      - Stern:      0.00 ft / 0.00 m
      - Average freeboard:   8.32 ft / 2.54 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 54.8 %
      - Above water (accommodation/working, high = better): 130.4 %
   Waterplane Area: 5,772 Square feet or 536 Square metres
   Displacement factor (Displacement / loading): 139 %
   Structure weight / hull surface area: 57 lbs/sq ft or 279 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.95
      - Longitudinal: 1.55
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

[Ithekro]

Whole thing

[Borys]

Ahoj!
Posting from web-cafe :)
The Invencible, going by the drawing, is wrong. The 6 inchers should be marked as "below main deck", while the 4 inchers are on the main deck, they are not "raised".
Borys

[The Rock Doctor]

Yes...you're right.  Well, that's one more ship designer off to spend quality time at the Pimichin Canal.

I'll edit later - don't imagine it'll change the rest of the design much.

[Desertfox]

I like em, but I would call the Invencibles BBs not BCs, as they have more armor and less speed than my own United States.

[The Rock Doctor]

I agree...which is why I've consistently referred to them as battleships.

[Desertfox]

How in the world did I read battlecruisers??? Must have been spring break!

[The Rock Doctor]

Pescador (a little homely, I grant you):



and Puerta Espana: