Uranus , laid down 1929, sold to Mexico 1943
Saturn , laid down 1929, sold to Mexico 1943
Venus , laid down 1929, sold to Mexico 1943
Mercury , laid down 1929, sold to Mexico 1943
Jupiter , laid down 1929, sold to Mexico 1943
Mars , laid down 1929, sold to Mexico 1943
Neptune , laid down 1930, sold to Mexico 1943
Pluto , laid down 1930, sold to Mexico 1943
Displacement:
576 t light; 607 t standard; 678 t normal; 735 t full load
Dimensions: Length overall / water x beam x draught
229,66 ft / 223,10 ft x 25,10 ft x 10,60 ft (normal load)
70,00 m / 68,00 m x 7,65 m x 3,23 m
Armament:
4 - 4,13" / 105 mm guns (2x2 guns), 35,32lbs / 16,02kg shells, 1929 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread
4 - 1,57" / 40,0 mm guns (2x2 guns), 1,95lbs / 0,89kg shells, 1929 Model
Breech loading guns in deck mounts
on side, evenly spread
4 - 0,79" / 20,0 mm guns in single mounts, 0,24lbs / 0,11kg shells, 1929 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 150 lbs / 68 kg
Shells per gun, main battery: 200
4 - 21,0" / 533 mm above water torpedoes
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0,79" / 20 mm 0,59" / 15 mm -
3rd: 0,59" / 15 mm - -
4th: 0,39" / 10 mm - -
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 18.766 shp / 14.000 Kw = 31,40 kts
Range 4.800nm at 12,00 kts
Bunker at max displacement = 127 tons
Complement:
66 - 86
Cost:
£0,325 million / $1,300 million
Distribution of weights at normal displacement:
Armament: 19 tons, 2,8%
Armour: 9 tons, 1,3%
- Belts: 0 tons, 0,0%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 9 tons, 1,3%
- Armour Deck: 0 tons, 0,0%
- Conning Tower: 0 tons, 0,0%
Machinery: 324 tons, 47,7%
Hull, fittings & equipment: 215 tons, 31,7%
Fuel, ammunition & stores: 102 tons, 15,0%
Miscellaneous weights: 10 tons, 1,5%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
198 lbs / 90 Kg = 5,6 x 4,1 " / 105 mm shells or 0,2 torpedoes
Stability (Unstable if below 1.00): 1,19
Metacentric height 0,9 ft / 0,3 m
Roll period: 11,4 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0,33
Seaboat quality (Average = 1.00): 0,75
Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0,400
Length to Beam Ratio: 8,89 : 1
'Natural speed' for length: 17,45 kts
Power going to wave formation at top speed: 75 %
Trim (Max stability = 0, Max steadiness = 100): 67
Bow angle (Positive = bow angles forward): 20,00 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 18,04 ft / 5,50 m
- Forecastle (20%): 16,08 ft / 4,90 m
- Mid (48%): 16,08 ft / 4,90 m (8,20 ft / 2,50 m aft of break)
- Quarterdeck (15%): 8,20 ft / 2,50 m
- Stern: 8,20 ft / 2,50 m
- Average freeboard: 12,14 ft / 3,70 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 177,6%
- Above water (accommodation/working, high = better): 60,9%
Waterplane Area: 3.577 Square feet or 332 Square metres
Displacement factor (Displacement / loading): 51%
Structure weight / hull surface area: 27 lbs/sq ft or 133 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,50
- Longitudinal: 4,31
- Overall: 0,62
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather