Doringsbaai , laid down 1922, sunk 22-05-35 (torpedo)
Saldanha Bay , laid down 1923, refitted 1941
Table Bay , laid down 1923, refitted 1941
Walker Bay , laid down 1924, refitted 1941
Displacement:
6.644 t light; 6.815 t standard; 8.113 t normal; 9.152 t full load
Dimensions: Length overall / water x beam x draught
409,20 ft / 400,26 ft x 63,98 ft x 17,06 ft (normal load)
124,72 m / 122,00 m x 19,50 m x 5,20 m
Armament:
2 - 4,13" / 105 mm guns in single mounts, 35,32lbs / 16,02kg shells, 1922 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread
1 - 3,46" / 88,0 mm guns in single mounts, 20,79lbs / 9,43kg shells, 1922 Model
Breech loading gun in deck mount
on side
2 - 1,57" / 40,0 mm guns (1x2 guns), 1,95lbs / 0,89kg shells, 1922 Model
Breech loading guns in deck mount
on side
2 - 0,79" / 20,0 mm guns in single mounts, 0,24lbs / 0,11kg shells, 1922 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 96 lbs / 43 kg
Shells per gun, main battery: 150
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0,98" / 25 mm - -
3rd: 0,59" / 15 mm - -
4th: 0,59" / 15 mm - -
5th: 0,39" / 10 mm - -
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 16.086 shp / 12.000 Kw = 20,32 kts
Range 10.000nm at 15,00 kts (Bunkerage = 2.336 tons)
Complement:
426 - 555
Cost:
£0,870 million / $3,480 million
Distribution of weights at normal displacement:
Armament: 12 tons, 0,1%
Armour: 6 tons, 0,1%
- Belts: 0 tons, 0,0%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 6 tons, 0,1%
- Armour Deck: 0 tons, 0,0%
- Conning Tower: 0 tons, 0,0%
Machinery: 546 tons, 6,7%
Hull, fittings & equipment: 2.080 tons, 25,6%
Fuel, ammunition & stores: 1.469 tons, 18,1%
Miscellaneous weights: 4.000 tons, 49,3%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
10.928 lbs / 4.957 Kg = 309,4 x 4,1 " / 105 mm shells or 2,0 torpedoes
Stability (Unstable if below 1.00): 1,12
Metacentric height 3,2 ft / 1,0 m
Roll period: 15,1 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0,01
Seaboat quality (Average = 1.00): 1,54
Hull form characteristics:
Hull has raised forecastle, raised quarterdeck
Block coefficient: 0,650
Length to Beam Ratio: 6,26 : 1
'Natural speed' for length: 20,01 kts
Power going to wave formation at top speed: 52 %
Trim (Max stability = 0, Max steadiness = 100): 33
Bow angle (Positive = bow angles forward): 5,00 degrees
Stern overhang: 6,56 ft / 2,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27,10 ft / 8,26 m
- Forecastle (20%): 21,98 ft / 6,70 m (14,01 ft / 4,27 m aft of break)
- Mid (50%): 14,01 ft / 4,27 m
- Quarterdeck (15%): 21,88 ft / 6,67 m (14,01 ft / 4,27 m before break)
- Stern: 21,88 ft / 6,67 m
- Average freeboard: 17,19 ft / 5,24 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 77,2%
- Above water (accommodation/working, high = better): 122,9%
Waterplane Area: 19.617 Square feet or 1.822 Square metres
Displacement factor (Displacement / loading): 156%
Structure weight / hull surface area: 76 lbs/sq ft or 369 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,99
- Longitudinal: 1,60
- Overall: 1,04
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
After refit
Displacement:
6.639 t light; 6.815 t standard; 8.113 t normal; 9.152 t full load
Dimensions: Length overall / water x beam x draught
409,20 ft / 400,26 ft x 63,98 ft x 17,06 ft (normal load)
124,72 m / 122,00 m x 19,50 m x 5,20 m
Armament:
2 - 4,13" / 105 mm guns in single mounts, 35,32lbs / 16,02kg shells, 1922 Model
Dual purpose guns in deck mounts
on centreline ends, evenly spread
8 - 1,57" / 40,0 mm guns (2x4 guns), 1,95lbs / 0,88kg shells, 1922 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
6 - 0,79" / 20,0 mm guns in single mounts, 0,24lbs / 0,11kg shells, 1922 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 88 lbs / 40 kg
Shells per gun, main battery: 250
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1,38" / 35 mm 0,98" / 25 mm -
4th: 0,59" / 15 mm - -
5th: 0,39" / 10 mm - -
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 16.086 shp / 12.000 Kw = 20,32 kts
Range 10.000nm at 15,00 kts
Bunker at max displacement = 2.336 tons
Complement:
426 - 555
Cost:
£0,867 million / $3,469 million
Distribution of weights at normal displacement:
Armament: 11 tons, 0,1%
Armour: 8 tons, 0,1%
- Belts: 0 tons, 0,0%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 8 tons, 0,1%
- Armour Deck: 0 tons, 0,0%
- Conning Tower: 0 tons, 0,0%
Machinery: 546 tons, 6,7%
Hull, fittings & equipment: 2.074 tons, 25,6%
Fuel, ammunition & stores: 1.474 tons, 18,2%
Miscellaneous weights: 4.000 tons, 49,3%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
10.932 lbs / 4.959 Kg = 309,5 x 4,1 " / 105 mm shells or 2,0 torpedoes
Stability (Unstable if below 1.00): 1,12
Metacentric height 3,2 ft / 1,0 m
Roll period: 15,1 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0,01
Seaboat quality (Average = 1.00): 1,54
Hull form characteristics:
Hull has raised forecastle, raised quarterdeck
Block coefficient: 0,650
Length to Beam Ratio: 6,26 : 1
'Natural speed' for length: 20,01 kts
Power going to wave formation at top speed: 52 %
Trim (Max stability = 0, Max steadiness = 100): 33
Bow angle (Positive = bow angles forward): 5,00 degrees
Stern overhang: 6,56 ft / 2,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27,10 ft / 8,26 m
- Forecastle (20%): 21,98 ft / 6,70 m (14,01 ft / 4,27 m aft of break)
- Mid (50%): 14,01 ft / 4,27 m
- Quarterdeck (15%): 21,88 ft / 6,67 m (14,01 ft / 4,27 m before break)
- Stern: 21,88 ft / 6,67 m
- Average freeboard: 17,19 ft / 5,24 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 77,1%
- Above water (accommodation/working, high = better): 122,9%
Waterplane Area: 19.617 Square feet or 1.822 Square metres
Displacement factor (Displacement / loading): 156%
Structure weight / hull surface area: 75 lbs/sq ft or 368 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,99
- Longitudinal: 1,59
- Overall: 1,04
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