Even if I dont take over Mexico, I still feel the Mexican navy needs a major upgrade.
Here is a gunboat design based on the American Tillmans. Carries one floatplane.
General Alvaro Obregon, Mexico Gunboat laid down 1930
Displacement:
1,471 t light; 1,540 t standard; 1,872 t normal; 2,138 t full load
Dimensions: Length overall / water x beam x draught
320.00 ft / 320.00 ft x 35.00 ft x 13.00 ft (normal load)
97.54 m / 97.54 m x 10.67 m x 3.96 m
Armament:
6 - 5.00" / 127 mm guns (3x2 guns), 62.50lbs / 28.35kg shells, 1930 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
4 - 1.10" / 27.9 mm guns (1x4 guns), 0.67lbs / 0.30kg shells, 1930 Model
Anti-aircraft guns in deck mount
on centreline amidships, all raised guns - superfiring
Weight of broadside 378 lbs / 171 kg
Shells per gun, main battery: 150
4 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm - -
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 14,084 shp / 10,507 Kw = 25.00 kts
Range 7,000nm at 15.00 kts
Bunker at max displacement = 598 tons
Complement:
141 - 184
Cost:
£0.631 million / $2.524 million
Distribution of weights at normal displacement:
Armament: 47 tons, 2.5 %
Armour: 14 tons, 0.8 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 14 tons, 0.8 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 427 tons, 22.8 %
Hull, fittings & equipment: 882 tons, 47.1 %
Fuel, ammunition & stores: 401 tons, 21.4 %
Miscellaneous weights: 100 tons, 5.3 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2,676 lbs / 1,214 Kg = 42.8 x 5.0 " / 127 mm shells or 0.8 torpedoes
Stability (Unstable if below 1.00): 1.14
Metacentric height 1.3 ft / 0.4 m
Roll period: 12.8 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.77
Seaboat quality (Average = 1.00): 1.71
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.450
Length to Beam Ratio: 9.14 : 1
'Natural speed' for length: 17.89 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 41
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: 19.00 ft / 5.79 m
- Forecastle (15 %): 17.00 ft / 5.18 m
- Mid (40 %): 15.00 ft / 4.57 m
- Quarterdeck (11 %): 15.00 ft / 4.57 m
- Stern: 15.00 ft / 4.57 m
- Average freeboard: 15.67 ft / 4.78 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 99.5 %
- Above water (accommodation/working, high = better): 111.6 %
Waterplane Area: 7,144 Square feet or 664 Square metres
Displacement factor (Displacement / loading): 139 %
Structure weight / hull surface area: 60 lbs/sq ft or 295 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.85
- Longitudinal: 4.21
- 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