Rio Panuco (ex-Henry Hudson), Mexico Training Aircraft Carrier laid down 1910 (converted 1940)
Displacement:
4,402 t light; 4,499 t standard; 4,773 t normal; 4,993 t full load
Dimensions: Length overall / water x beam x draught
450.00 ft / 450.00 ft x 50.00 ft x 13.50 ft (normal load)
137.16 m / 137.16 m x 15.24 m x 4.11 m
Armament:
2 - 1.85" / 47.0 mm guns (1x2 guns), 3.17lbs / 1.44kg shells, 1910 Model
Anti-aircraft guns in deck mounts
on side, all amidships
4 - 0.50" / 12.7 mm guns (2x2 guns), 0.06lbs / 0.03kg shells, 1910 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 13 lbs / 6 kg
Shells per gun, main battery: 150
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm - -
- Armour deck: 0.50" / 13 mm, Conning tower: 1.00" / 25 mm
Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 5,487 ihp / 4,093 Kw = 17.00 kts
Range 3,300nm at 10.00 kts
Bunker at max displacement = 494 tons (100% coal)
Complement:
286 - 373
Cost:
£0.207 million / $0.827 million
Distribution of weights at normal displacement:
Armament: 2 tons, 0.0 %
Armour: 153 tons, 3.2 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 1 tons, 0.0 %
- Armour Deck: 145 tons, 3.0 %
- Conning Tower: 6 tons, 0.1 %
Machinery: 366 tons, 7.7 %
Hull, fittings & equipment: 1,682 tons, 35.2 %
Fuel, ammunition & stores: 371 tons, 7.8 %
Miscellaneous weights: 2,200 tons, 46.1 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
7,870 lbs / 3,570 Kg = 2,484.4 x 1.9 " / 47 mm shells or 1.6 torpedoes
Stability (Unstable if below 1.00): 1.08
Metacentric height 2.0 ft / 0.6 m
Roll period: 14.7 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 1.63
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.550
Length to Beam Ratio: 9.00 : 1
'Natural speed' for length: 21.21 kts
Power going to wave formation at top speed: 32 %
Trim (Max stability = 0, Max steadiness = 100): 31
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: 17.00 ft / 5.18 m
- Forecastle (50 %): 15.00 ft / 4.57 m
- Mid (50 %): 15.00 ft / 4.57 m
- Quarterdeck (15 %): 15.00 ft / 4.57 m
- Stern: 15.00 ft / 4.57 m
- Average freeboard: 15.40 ft / 4.69 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 75.9 %
- Above water (accommodation/working, high = better): 156.9 %
Waterplane Area: 15,703 Square feet or 1,459 Square metres
Displacement factor (Displacement / loading): 154 %
Structure weight / hull surface area: 72 lbs/sq ft or 352 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.13
- Longitudinal: 1.24
- Overall: 1.14
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Excellent seaboat, comfortable, can fire her guns in the heaviest weather