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Wednesday, February 4th 2009, 12:28am

CNS Almirante Uribe

I have discovered that the Chilean schoolship, Almirante Uribe, lacks a Springsharp design; the ship appears by all accounts to be the historical schoolship General Baquedano by a different name (General Baquedano being a name previously assigned to a Chilean predreadnought battleship).

Using the statistics of the historical General Baquedano, I have drawn up a design of the WW Almirante Uribe. As nearly as I can tell, the WW Uribe was refitted in 1924, so I simmed her engines and machine-guns from that date.

Keep in mind that this vessel is a part-steam, part-sail vessel. I added the miscellaneous weight mostly to cover her rigging.

Quoted

[SIZE=3]CNS Almirante Uribe, Chilean School Ship laid down 1898 (Engine 1924)[/SIZE]

Displacement:
1,410 t light; 1,485 t standard; 2,500 t normal; 3,312 t full load

Dimensions: Length overall / water x beam x draught
296.59 ft / 239.99 ft x 36.09 ft x 17.98 ft (normal load)
90.40 m / 73.15 m x 11.00 m x 5.48 m

Armament:
4 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.92kg shells, 1898 Model
Breech loading guns in deck mounts
on side ends, evenly spread
2 - 2.24" / 57.0 mm guns in single mounts, 5.65lbs / 2.56kg shells, 1898 Model
Breech loading guns in deck mounts
on centreline, all amidships
2 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1924 Model
Breech loading guns in deck mounts
on side, all amidships
Weight of broadside 223 lbs / 101 kg
Shells per gun, main battery: 200

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2.95" / 75 mm 156.00 ft / 47.55 m 7.22 ft / 2.20 m
Ends: Unarmoured
Main Belt covers 100 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.95" / 75 mm - -

- Conning tower: 3.54" / 90 mm

Machinery:
Oil fired boilers, complex reciprocating steam engines,
Geared drive, 2 shafts, 1,953 ihp / 1,457 Kw = 13.80 kts
Range 15,000nm at 13.80 kts
Bunker at max displacement = 1,827 tons

Three masts, barque-rigged

Complement:
176 - 229

Cost:
£0.089 million / $0.354 million

Distribution of weights at normal displacement:
Armament: 28 tons, 1.1 %
Armour: 190 tons, 7.6 %
- Belts: 145 tons, 5.8 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 31 tons, 1.2 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 14 tons, 0.6 %
Machinery: 113 tons, 4.5 %
Hull, fittings & equipment: 679 tons, 27.2 %
Fuel, ammunition & stores: 1,090 tons, 43.6 %
Miscellaneous weights: 400 tons, 16.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
6,230 lbs / 2,826 Kg = 118.2 x 4.7 " / 120 mm shells or 2.2 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 1.5 ft / 0.4 m
Roll period: 12.5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.15
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.562
Length to Beam Ratio: 6.65 : 1
'Natural speed' for length: 15.49 kts
Power going to wave formation at top speed: 43 %
Trim (Max stability = 0, Max steadiness = 100): 35
Bow angle (Positive = bow angles forward): 45.00 degrees
Stern overhang: 39.37 ft / 12.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 17.22 ft / 5.25 m
- Forecastle (20 %): 14.76 ft / 4.50 m
- Mid (50 %): 13.12 ft / 4.00 m
- Quarterdeck (15 %): 13.12 ft / 4.00 m
- Stern: 13.12 ft / 4.00 m
- Average freeboard: 13.89 ft / 4.24 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 42.2 %
- Above water (accommodation/working, high = better): 89.3 %
Waterplane Area: 6,112 Square feet or 568 Square metres
Displacement factor (Displacement / loading): 241 %
Structure weight / hull surface area: 58 lbs/sq ft or 285 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 4.55
- Overall: 1.12
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

2

Wednesday, February 4th 2009, 5:26pm

So, no comments? She's okay to post then?

3

Wednesday, February 4th 2009, 6:34pm

It should be.

4

Wednesday, February 4th 2009, 6:37pm

I have no idea how much sails weigh so it's difficult to give any useful input.