The next Gran Colombian battleship

Started by The Rock Doctor, June 08, 2008, 07:52:18 PM

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The Rock Doctor

...would be in an awkward situation if its engines were to break down without one of these being nearby:



Ocean-going tug, laid down 1913, engine 1912

Displacement:
   721 t light; 743 t standard; 1,062 t normal; 1,318 t full load

Dimensions: Length overall / water x beam x draught
   147.64 ft / 147.64 ft x 29.53 ft x 13.12 ft (normal load)
   45.00 m / 45.00 m x 9.00 m  x 4.00 m

Armament:
      1 - 1.85" / 47.0 mm guns in single mounts, 3.17lbs / 1.44kg shells, 1912 Model
     Quick firing gun in deck mount
     on centreline forward, 1 raised gun
      2 - 0.31" / 8.0 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1912 Model
     Machine guns in deck mounts
     on side, all amidships, all raised mounts - superfiring
   Weight of broadside 3 lbs / 1 kg
   Shells per gun, main battery: 250

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   0.98" / 25 mm     88.58 ft / 27.00 m   9.84 ft / 3.00 m
   Ends:   0.98" / 25 mm     59.02 ft / 17.99 m   9.84 ft / 3.00 m
     Main Belt covers 92 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.98" / 25 mm         -               -
   2nd:   0.39" / 10 mm         -               -

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 1,500 ihp / 1,119 Kw = 13.87 kts
   Range 10,000nm at 10.00 kts (Bunkerage = 575 tons)

Complement:
   92 - 120

Cost:
   £0.039 million / $0.158 million

Distribution of weights at normal displacement:
   Armament: 0 tons, 0.0 %
   Armour: 62 tons, 5.8 %
      - Belts: 61 tons, 5.7 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 1 tons, 0.1 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 99 tons, 9.4 %
   Hull, fittings & equipment: 360 tons, 33.9 %
   Fuel, ammunition & stores: 341 tons, 32.1 %
   Miscellaneous weights: 200 tons, 18.8 %
   -100 t:  Towing rig
   -60 t:  Emergency quarters for thirty (i.e., crew of towed vessel)
   -25 t:  Wireless
   -15 t:  Weight reserve

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     2,417 lbs / 1,097 Kg = 763.1 x 1.9 " / 47 mm shells or 1.2 torpedoes
   Stability (Unstable if below 1.00): 1.13
   Metacentric height 1.0 ft / 0.3 m
   Roll period: 12.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.01
   Seaboat quality  (Average = 1.00): 2.00

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.650
   Length to Beam Ratio: 5.00 : 1
   'Natural speed' for length: 12.15 kts
   Power going to wave formation at top speed: 62 %
   Trim (Max stability = 0, Max steadiness = 100): 25
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: -3.28 ft / -1.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      19.69 ft / 6.00 m
      - Forecastle (25 %):   16.40 ft / 5.00 m
      - Mid (50 %):      13.12 ft / 4.00 m
      - Quarterdeck (15 %):   13.12 ft / 4.00 m
      - Stern:      16.40 ft / 5.00 m
      - Average freeboard:   14.93 ft / 4.55 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 52.3 %
      - Above water (accommodation/working, high = better): 95.5 %
   Waterplane Area: 3,340 Square feet or 310 Square metres
   Displacement factor (Displacement / loading): 229 %
   Structure weight / hull surface area: 50 lbs/sq ft or 244 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.04
      - Longitudinal: 15.94
      - Overall: 1.37
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is adequate
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Borys

They could be called the "Amigo" class :)
Borys
NEDS - Not Enough Deck Space for all those guns and torpedos;
Bambi must DIE!

Sachmle

Perhaps sim it w/ a higher speed to simulate the tremendous HP, but list it at the lower speed and claim transmission gearing for the difference.  Wikipedia (I know, not always accurate) lists larger ocean tugs as having up to 3000hp.
"All treaties between great states cease to be binding when they come in conflict with the struggle for existence."
Otto von Bismarck

"Give me a woman who loves beer and I will conquer the world."
Kaiser Wilhelm

"If stupidity were painfull I would be deaf from all the screaming." Sam A. Grim

P3D

I'd use a destroyer for towing, for the unprobable case when all the two/four turbines fail. It worked in WWII with the Yorktown.
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas

The Rock Doctor

That could be done, but four of these tugs, built to merchant standards, would cost less than a single torpedo-boat.  Their freeboard and range are more suitable to long-range tow/salvage work than a torpedo-boat, too.