CTB1 - 1915H1
CTB2 -
CTB3 -
CTB4 -
CTB5 -
CTB6 -
200t, Peru CTB laid down 1915 (Engine 1912)
Displacement:
200 t light; 206 t standard; 234 t normal; 255 t full load
Dimensions: Length overall / water x beam x draught
178.31 ft / 177.17 ft x 16.88 ft x 6.92 ft (normal load)
54.35 m / 54.00 m x 5.15 m x 2.11 m
Armament:
1 - 3.54" / 90.0 mm guns in single mounts, 22.24lbs / 10.09kg shells, 1915 Model
Quick firing gun in deck mount
on centreline
2 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1915 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 22 lbs / 10 kg
Shells per gun, main battery: 175
3 - 18.0" / 457.2 mm above water torpedoes
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.79" / 20 mm - -
2nd: 0.50" / 13 mm - -
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 7 000 shp / 5 222 Kw = 27.16 kts
Range 200nm at 27.00 kts
2150nm at 12kts
Bunker at max displacement = 49 tons
Complement:
29 - 38
Cost:
£0.039 million / $0.155 million
Distribution of weights at normal displacement:
Armament: 3 tons, 1.2 %
Armour: 2 tons, 0.7 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 2 tons, 0.7 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 124 tons, 53.0 %
Hull, fittings & equipment: 65 tons, 28.0 %
Fuel, ammunition & stores: 34 tons, 14.6 %
Miscellaneous weights: 6 tons, 2.6 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
54 lbs / 25 Kg = 2.4 x 3.5 " / 90 mm shells or 0.1 torpedoes
Stability (Unstable if below 1.00): 1.14
Metacentric height 0.4 ft / 0.1 m
Roll period: 10.6 seconds
Steadiness - As gun platform (Average = 50 %): 48 %
- Recoil effect (Restricted arc if above 1.00): 0.14
Seaboat quality (Average = 1.00): 0.65
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.395
Length to Beam Ratio: 10.50 : 1
'Natural speed' for length: 13.31 kts
Power going to wave formation at top speed: 71 %
Trim (Max stability = 0, Max steadiness = 100): 69
Bow angle (Positive = bow angles forward): 5.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 13.12 ft / 4.00 m
- Forecastle (18 %): 9.84 ft / 3.00 m
- Mid (50 %): 5.91 ft / 1.80 m
- Quarterdeck (15 %): 5.91 ft / 1.80 m
- Stern: 5.25 ft / 1.60 m
- Average freeboard: 7.43 ft / 2.27 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 183.2 %
- Above water (accommodation/working, high = better): 40.6 %
Waterplane Area: 1 836 Square feet or 171 Square metres
Displacement factor (Displacement / loading): 40 %
Structure weight / hull surface area: 17 lbs/sq ft or 83 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.12
- Overall: 0.57
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is extremely poor
Caution: Lacks seaworthiness - very limited seakeeping ability
These torpedo boats receive in july 1914 from GC were adapted in Paracas Shipsyards, near Pisco, to standard Peruvian armament.
They receive the TB Mancora class guns, GC torpedoes tubes were also adapted.
2 weeks of work on each TB.
Maria, august 1914
Cartagena, august 1914
Esmeraldas, sept 1914
Guayaquil, sept 1914
La Guaira, oct 1914
David, oct 1914
Cali, nov 1914
Barranquilla, nov 1914
All are affected to coastal bases protection in january 1915
410t - Maria class, From GC to Peru Coastal TB laid down 1899 (Engine 1900)
Displacement:
408 t light; 420 t standard; 466 t normal; 502 t full load
Dimensions: Length overall / water x beam x draught
200.13 ft / 200.13 ft x 20.01 ft x 10.17 ft (normal load)
61.00 m / 61.00 m x 6.10 m x 3.10 m
Armament:
2 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1899 Model
Quick firing guns in deck mounts
on centreline, evenly spread
2 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1899 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 27 lbs / 12 kg
Shells per gun, main battery: 200
3 - 18.0" / 457 mm above water torpedoes
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.79" / 20 mm - -
2nd: 0.79" / 20 mm - -
Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 10 000 ihp / 7 460 Kw = 26.99 kts
Range 2 000nm at 10.00 kts
Bunker at max displacement = 82 tons (100% coal)
Caution: Delicate, lightweight machinery
Complement:
49 - 65
Cost:
£0.058 million / $0.231 million
Distribution of weights at normal displacement:
Armament: 3 tons, 0.7 %
Armour: 3 tons, 0.5 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 3 tons, 0.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 290 tons, 62.2 %
Hull, fittings & equipment: 108 tons, 23.2 %
Fuel, ammunition & stores: 58 tons, 12.5 %
Miscellaneous weights: 4 tons, 0.9 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
78 lbs / 35 Kg = 5.8 x 3.0 " / 76 mm shells or 0.1 torpedoes
Stability (Unstable if below 1.00): 1.24
Metacentric height 0.7 ft / 0.2 m
Roll period: 10.3 seconds
Steadiness - As gun platform (Average = 50 %): 57 %
- Recoil effect (Restricted arc if above 1.00): 0.10
Seaboat quality (Average = 1.00): 0.83
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.400
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 14.15 kts
Power going to wave formation at top speed: 69 %
Trim (Max stability = 0, Max steadiness = 100): 69
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: 11.48 ft / 3.50 m
- Forecastle (19 %): 13.12 ft / 4.00 m
- Mid (50 %): 6.56 ft / 2.00 m
- Quarterdeck (18 %): 6.56 ft / 2.00 m
- Stern: 6.56 ft / 2.00 m
- Average freeboard: 8.70 ft / 2.65 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 207.3 %
- Above water (accommodation/working, high = better): 48.7 %
Waterplane Area: 2 465 Square feet or 229 Square metres
Displacement factor (Displacement / loading): 15 %
Structure weight / hull surface area: 20 lbs/sq ft or 98 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.25
- Overall: 0.58
Hull space for machinery, storage, compartmentation is extremely poor
Room for accommodation and workspaces is extremely poor
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather