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Fleet list

4 modified San Augustine class
DD San Rogue
DD San Luis
DD San Fernando
DD San Pablo

8 modified San Jacinto class
DD San Augustin
DD San Angel
DD San Antero
DD San Rafael
DD San Juan
DD San Andes
DD San Gil
DD San Pedro de Arimena

4 San Jacinto class

DD San Jacinto
DD San Onofre
DD San Marcos
DD San Martin

16 dent class DD's, purchased in 1943

DD La Minas
DD La Sobola
DD La Vega
DD La Selva
DD La Flecha
DD La Serena
DD La Loma
DD La Colonia

DD La Estacia
DD La Cabana
DD La Rada
DD La Ermita
DD La Mara
DD La Mesa
DD La Granja
DD La Ranchila


8 refitted Admiralty type 1's, purchased in 1943
DD Plato
DD Solidad
DD Solano
DD Riohacha
DD Turbaco
DD Monteria
DD Ocana
DD Neiva

8 unrefitted Admiralty type 1's, taken out of service in 1944

DD Caldas (Ex-Ursa, purchased 1932)
DD Antioquia (Ex-Umbra, purchased 1932)
DD Baire (Ex-Underpin, purchased 1932)
DD Evigado (Ex-Unfeeling, purchased 1932)
DD Belio (Ex-Unseen, purchased 1932)
DD Liberatore (Ex-Unmoved, purchased 1932)
DD Corozal (Ex-Underwing, purchased 1933)
DD Cordoba (Ex-Upshur, purchased 1933)

An additional 4 ships of the San Jacinto type have been ordered and Colombia is discussiong plans to aquire the Atlantean K class design blueprints.

Its expected that Colombia will build its next batch of destroyers based on the newest Atlantean class of destroyers.

San Rogue (modified Jan Jacinto) class. Another destroyer class modified on the San Jacinto class, this class of ships uses the new Atlantean 75mm AA guns. The design also has improved anti-sub equipment, electronics and fire direction equipment as well as an improved range.

San Roque class, Colombian Destroyer laid down 1944

San Rogue, San Luis, San Fernando, San Pablo (all ordered 1944)

Displacement:
1,684 t light; 1,790 t standard; 2,028 t normal; 2,218 t full load

Dimensions: Length overall / water x beam x draught
390.94 ft / 378.00 ft x 38.00 ft x 12.20 ft (normal load)
119.16 m / 115.21 m x 11.58 m x 3.72 m

Armament:
6 - 5.10" / 130 mm guns (3x2 guns), 66.33lbs / 30.09kg shells, 1944 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
4 - 2.95" / 75.0 mm guns (2x2 guns), 12.87lbs / 5.84kg shells, 1944 Model
Automatic rapid fire guns in deck mounts with hoists
on side, all amidships, all raised mounts - superfiring
8 - 0.79" / 20.0 mm guns (2x4 guns), 0.24lbs / 0.11kg shells, 1944 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
4 - 0.79" / 20.0 mm guns (1x4 guns), 0.24lbs / 0.11kg shells, 1944 Model
Anti-aircraft guns in deck mount
on centreline aft, all raised guns - superfiring
4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1944 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 453 lbs / 205 kg
Shells per gun, main battery: 250
10 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.79" / 20 mm 0.98" / 25 mm

- Conning tower: 1.58" / 40 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 38,154 shp / 28,463 Kw = 33.75 kts
Range 5,800nm at 15.00 kts
Bunker at max displacement = 427 tons

Complement:
150 - 196

Cost:
£1.535 million / $6.138 million

Distribution of weights at normal displacement:
Armament: 58 tons, 2.9 %
Armour: 24 tons, 1.2 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 19 tons, 0.9 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 5 tons, 0.3 %
Machinery: 861 tons, 42.5 %
Hull, fittings & equipment: 681 tons, 33.6 %
Fuel, ammunition & stores: 344 tons, 17.0 %
Miscellaneous weights: 60 tons, 3.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
703 lbs / 319 Kg = 10.6 x 5.1 " / 130 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.28
Metacentric height 1.8 ft / 0.6 m
Roll period: 11.8 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.53
Seaboat quality (Average = 1.00): 1.01

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.405
Length to Beam Ratio: 9.95 : 1
'Natural speed' for length: 22.48 kts
Power going to wave formation at top speed: 66 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.75 ft / 8.46 m
- Forecastle (20 %): 20.50 ft / 6.25 m
- Mid (40 %): 20.50 ft / 6.25 m (12.00 ft / 3.66 m aft of break)
- Quarterdeck (15 %): 12.00 ft / 3.66 m
- Stern: 12.00 ft / 3.66 m
- Average freeboard: 15.98 ft / 4.87 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 163.7 %
- Above water (accommodation/working, high = better): 88.9 %
Waterplane Area: 9,204 Square feet or 855 Square metres
Displacement factor (Displacement / loading): 81 %
Structure weight / hull surface area: 40 lbs/sq ft or 195 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.81
- Overall: 0.57
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped

20 tons for 10x21" torpedo reloads
16 tons for 40 Type 5 DC's and equipment
1 ton for two 12 round Type 1 spigot mortar mounts (forward)
5 tons for improved fire control equipment
9 tons for Sonar
7 tons for Radars
2 tons for RDF equipment
2 tons for crew comforts

San Augustine (Modified San Jacinto) class

The Colombian navy built a further twelve units of the San Jacinto class in two batches to a modified design using a new 5.1" turret design, increased 20mm armament and slightly modified bridge structure similar to the J class destroyers Atlantis built for Brazil. Four of the twelve ships were ordered in 1944.

San Augustine, Colombian Destroyer laid down 1938/39

Names: San Augustin, San Angel, San Antero, San Rafael, San Juan, San Andes, San Gil, San Pedro de Arimena, (San Rogue, San Luis, San Fernando, San Pablo ordered to modified design).

Displacement:
1,669 t light; 1,767 t standard; 1,997 t normal; 2,181 t full load

Dimensions: Length overall / water x beam x draught
384.67 ft / 375.30 ft x 36.85 ft x 12.48 ft (normal load)
117.25 m / 114.39 m x 11.23 m x 3.80 m

Armament:
6 - 5.10" / 130 mm guns (3x2 guns), 66.33lbs / 30.08kg shells, 1938 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount - superfiring
4 - 1.57" / 40.0 mm guns (2x2 guns), 1.95lbs / 0.89kg shells, 1938 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
8 - 0.79" / 20.0 mm guns (2x4 guns), 0.24lbs / 0.11kg shells, 1938 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
4 - 0.79" / 20.0 mm guns (1x4 guns), 0.24lbs / 0.11kg shells, 1938 Model
Anti-aircraft guns in deck mount
on centreline aft, all raised guns - superfiring
4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1938 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 409 lbs / 185 kg
Shells per gun, main battery: 250
10 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.79" / 20 mm 0.98" / 25 mm

- Conning tower: 1.58" / 40 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 37,205 shp / 27,755 Kw = 33.60 kts
Range 5,400nm at 15.00 kts
Bunker at max displacement = 413 tons

Complement:
149 - 194

Cost:
£1.306 million / $5.224 million

Distribution of weights at normal displacement:
Armament: 51 tons, 2.6 %
Armour: 24 tons, 1.2 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 19 tons, 0.9 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 5 tons, 0.3 %
Machinery: 879 tons, 44.0 %
Hull, fittings & equipment: 660 tons, 33.0 %
Fuel, ammunition & stores: 328 tons, 16.4 %
Miscellaneous weights: 55 tons, 2.8 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
679 lbs / 308 Kg = 10.2 x 5.1 " / 130 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.30
Metacentric height 1.8 ft / 0.5 m
Roll period: 11.6 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.50
Seaboat quality (Average = 1.00): 1.05

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.405
Length to Beam Ratio: 10.18 : 1
'Natural speed' for length: 22.36 kts
Power going to wave formation at top speed: 65 %
Trim (Max stability = 0, Max steadiness = 100): 48
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: 25.75 ft / 7.85 m
- Forecastle (20 %): 20.50 ft / 6.25 m
- Mid (40 %): 20.50 ft / 6.25 m (12.00 ft / 3.66 m aft of break)
- Quarterdeck (15 %): 12.00 ft / 3.66 m
- Stern: 12.00 ft / 3.66 m
- Average freeboard: 15.82 ft / 4.82 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 166.1 %
- Above water (accommodation/working, high = better): 83.1 %
Waterplane Area: 8,861 Square feet or 823 Square metres
Displacement factor (Displacement / loading): 80 %
Structure weight / hull surface area: 39 lbs/sq ft or 191 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.51
- Longitudinal: 1.89
- Overall: 0.58
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped

20 tons for 10x21" torpedo reloads
15 tons for 40 type 4/5 DC's and equipment
9 tons for Sonar
7 tons for Radars
2 tons for RDF equipment
2 tons for crew comforts

San Jacinto class destroyer
(Atlantean J class Destroyer, 1932 design)

San Jacinto, San Onofre, San Marcos, San Martin

Displacement:
1,583 t light; 1,667 t standard; 1,906 t normal; 2,096 t full load

Dimensions: Length overall / water x beam x draught
384.37 ft / 375.00 ft x 36.00 ft x 12.20 ft (normal load)
117.16 m / 114.30 m x 10.97 m x 3.72 m

Armament:
6 - 5.10" / 130 mm guns (3x2 guns), 66.33lbs / 30.09kg shells, 1932 Model
Dual purpose guns in deck mounts
on centreline ends, majority forward, 1 raised mount - superfiring
4 - 1.58" / 40.0 mm guns (2x2 guns), 1.95lbs / 0.88kg shells, 1932 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
6 - 0.79" / 20.0 mm guns (3x2 guns), 0.24lbs / 0.11kg shells, 1932 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
6 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1932 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 408 lbs / 185 kg
Shells per gun, main battery: 200
10 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm 1.00" / 25 mm -

- Conning tower: 1.57" / 40 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 36,776 shp / 27,435 Kw = 33.75 kts
Range 5,400nm at 15.00 kts
Bunker at max displacement = 429 tons

Complement:
143 - 187

Cost:
£1.010 million / $4.039 million

Distribution of weights at normal displacement:
Armament: 51 tons, 2.7 %
Armour: 26 tons, 1.4 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 21 tons, 1.1 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 5 tons, 0.3 %
Machinery: 885 tons, 46.4 %
Hull, fittings & equipment: 576 tons, 30.2 %
Fuel, ammunition & stores: 323 tons, 16.9 %
Miscellaneous weights: 45 tons, 2.4 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
652 lbs / 296 Kg = 9.8 x 5.1 " / 130 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.53
Metacentric height 2.2 ft / 0.7 m
Roll period: 10.2 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.23
Seaboat quality (Average = 1.00): 1.17

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.405
Length to Beam Ratio: 10.42 : 1
'Natural speed' for length: 22.31 kts
Power going to wave formation at top speed: 65 %
Trim (Max stability = 0, Max steadiness = 100): 42
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: 25.75 ft / 7.85 m
- Forecastle (20 %): 20.50 ft / 6.25 m
- Mid (40 %): 20.50 ft / 6.25 m (12.00 ft / 3.66 m aft of break)
- Quarterdeck (15 %): 12.00 ft / 3.66 m
- Stern: 12.00 ft / 3.66 m
- Average freeboard: 15.82 ft / 4.82 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 173.6 %
- Above water (accommodation/working, high = better): 82.4 %
Waterplane Area: 8,650 Square feet or 804 Square metres
Displacement factor (Displacement / loading): 72 %
Structure weight / hull surface area: 34 lbs/sq ft or 168 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.97
- Overall: 0.58
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped

9 tons for sonar
20 tons for 10x21" torpedo's
14 tons for 46 type 3 DC's (later 37 newer type 4/5's)
2 tons for ASW equipment

Dent class 1919/20


16 ships
Names:
Basilone, Furse, Borum, Avarice, partially reconstructed 1933 after engagement with Pirate ship SS Intrepida, Basilone damaged in resulting battle. All ships of the class sold in 1943 to Colombia and renamed
La Minas, La Sobola, La Vega, La Selva
Foss, Cofer, Bull, Muir - renamed La Flecha, La Serena, La Loma, La Colonia
Tyrant, Isla, Ault, Dent - renamed La Estacia, La Cabana, La Rada, La Ermita
Gore, Torch, Sylph, Expunge -renamed La Mara, La Mesa, La Granja, La Ranchila


Basilone, Furse, Borum, Avarice after 1933 rebuilds
Dent repaired and refitted to same standards in 1936 along with rest of class
Basilone, Atlantean Destroyer laid down 1919 (Engine 1933)

Displacement:
1,214 t light; 1,268 t standard; 1,348 t normal; 1,412 t full load

Dimensions: Length overall / water x beam x draught
337.99 ft / 325.00 ft x 32.00 ft x 10.75 ft (normal load)
103.02 m / 99.06 m x 9.75 m x 3.28 m

Armament:
4 - 4.50" / 114 mm guns (2x2 guns), 45.56lbs / 20.67kg shells, 1919 Model
Breech loading guns in deck mounts with hoists
on centreline ends, evenly spread
4 - 1.58" / 40.0 mm guns (2x2 guns), 1.95lbs / 0.88kg shells, 1919 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
8 - 0.79" / 20.0 mm guns (2x4 guns), 0.24lbs / 0.11kg shells, 1919 Model
Breech loading guns in deck mounts
on side, evenly spread
8 - 0.50" / 12.7 mm guns (4x2 guns), 0.06lbs / 0.03kg shells, 1919 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 192 lbs / 87 kg
Shells per gun, main battery: 250
6 - 21.0" / 533.4 mm above water torpedoes

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 40,000 shp / 29,840 Kw = 33.98 kts
Range 5,000nm at 10.00 kts
Bunker at max displacement = 143 tons

Complement:
110 - 144

Cost:
£0.361 million / $1.443 million

Distribution of weights at normal displacement:
Armament: 24 tons, 1.8 %
Machinery: 733 tons, 54.4 %
Hull, fittings & equipment: 437 tons, 32.4 %
Fuel, ammunition & stores: 134 tons, 10.0 %
Miscellaneous weights: 20 tons, 1.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
308 lbs / 140 Kg = 6.8 x 4.5 " / 114 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.21
Metacentric height 1.3 ft / 0.4 m
Roll period: 11.8 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.34
Seaboat quality (Average = 1.00): 0.88

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.422
Length to Beam Ratio: 10.16 : 1
'Natural speed' for length: 18.03 kts
Power going to wave formation at top speed: 70 %
Trim (Max stability = 0, Max steadiness = 100): 68
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22.50 ft / 6.86 m
- Forecastle (30 %): 20.00 ft / 6.10 m
- Mid (40 %): 20.00 ft / 6.10 m (10.00 ft / 3.05 m aft of break)
- Quarterdeck (10 %): 10.00 ft / 3.05 m
- Stern: 10.00 ft / 3.05 m
- Average freeboard: 14.30 ft / 4.36 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 191.6 %
- Above water (accommodation/working, high = better): 79.0 %
Waterplane Area: 6,493 Square feet or 603 Square metres
Displacement factor (Displacement / loading): 53 %
Structure weight / hull surface area: 33 lbs/sq ft or 163 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.51
- Longitudinal: 2.19
- Overall: 0.59
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


Orriginal configuration

Basilone, Atlantis Destroyer laid down 1919

Displacement:
1,223 t light; 1,259 t standard; 1,348 t normal; 1,420 t full load

Dimensions: Length overall / water x beam x draught
330.63 ft / 325.00 ft x 32.00 ft x 10.75 ft (normal load)
100.78 m / 99.06 m x 9.75 m x 3.28 m

Armament:
3 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1919 Model
Breech loading guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount
4 - 1.00" / 25.4 mm guns in single mounts, 0.50lbs / 0.23kg shells, 1919 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 98 lbs / 44 kg
Shells per gun, main battery: 150
6 - 21.0" / 533.4 mm above water torpedoes

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 45,514 shp / 33,953 Kw = 35.00 kts
Range 4,800nm at 10.00 kts
Bunker at max displacement = 161 tons

Complement:
110 - 144

Cost:
£0.370 million / $1.479 million

Distribution of weights at normal displacement:
Armament: 12 tons, 0.9 %
Machinery: 831 tons, 61.7 %
Hull, fittings & equipment: 360 tons, 26.7 %
Fuel, ammunition & stores: 125 tons, 9.3 %
Miscellaneous weights: 20 tons, 1.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
232 lbs / 105 Kg = 7.3 x 4.0 " / 102 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.29
Metacentric height 1.4 ft / 0.4 m
Roll period: 11.2 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.18
Seaboat quality (Average = 1.00): 0.82

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.422
Length to Beam Ratio: 10.16 : 1
'Natural speed' for length: 18.03 kts
Power going to wave formation at top speed: 71 %
Trim (Max stability = 0, Max steadiness = 100): 73
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.00 ft / 6.40 m
- Forecastle (30 %): 20.00 ft / 6.10 m
- Mid (40 %): 20.00 ft / 6.10 m (10.00 ft / 3.05 m aft of break)
- Quarterdeck (10 %): 10.00 ft / 3.05 m
- Stern: 10.00 ft / 3.05 m
- Average freeboard: 14.12 ft / 4.30 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 207.3 %
- Above water (accommodation/working, high = better): 79.0 %
Waterplane Area: 6,493 Square feet or 603 Square metres
Displacement factor (Displacement / loading): 40 %
Structure weight / hull surface area: 28 lbs/sq ft or 136 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.43
- Longitudinal: 1.78
- Overall: 0.50
Hull space for machinery, storage, compartmentation is extremely poor
Room for accommodation and workspaces is cramped
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

Admiralty class DD, Atlantis Destroyer laid down 1916

Refitted ships

Uproar, Upstart, Upstage, Unruly, Uncouth, Unorthodox, Unity and Underhand all rebuilt in 1926, sold to Colombia in 1943
all renamed Plato, Solidad, Solano, Riohacha, Turbaco, Monteria, Ocana, Neiva

Admiralty class DD Refit, Atlantis Destroyer laid down 1916 (Engine 1926)

Displacement:
1,130 t light; 1,171 t standard; 1,244 t normal; 1,303 t full load

Dimensions: Length overall / water x beam x draught
313.53 ft / 310.00 ft x 30.00 ft x 10.50 ft (normal load)
95.56 m / 94.49 m x 9.14 m x 3.20 m

Armament:
4 - 4.50" / 114 mm guns (2x2 guns), 45.56lbs / 20.67kg shells, 1926 Model
Quick firing guns in deck mounts with hoists
on centreline ends, evenly spread
2 - 1.57" / 39.9 mm guns (1x2 guns), 1.93lbs / 0.88kg shells, 1926 Model
Anti-aircraft guns in deck mount
on centreline amidships
8 - 1.00" / 25.4 mm guns (4x2 guns), 0.50lbs / 0.23kg shells, 1926 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 190 lbs / 86 kg
Shells per gun, main battery: 150
6 - 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, 30,570 shp / 22,805 Kw = 32.00 kts
Range 4,500nm at 10.00 kts
Bunker at max displacement = 131 tons

Complement:
104 - 136

Cost:
£0.245 million / $0.979 million

Distribution of weights at normal displacement:
Armament: 24 tons, 1.9 %
Armour: 9 tons, 0.7 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 9 tons, 0.7 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 643 tons, 51.7 %
Hull, fittings & equipment: 435 tons, 34.9 %
Fuel, ammunition & stores: 114 tons, 9.2 %
Miscellaneous weights: 20 tons, 1.6 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
330 lbs / 150 Kg = 7.2 x 4.5 " / 114 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.02
Metacentric height 0.9 ft / 0.3 m
Roll period: 13.6 seconds
Steadiness - As gun platform (Average = 50 %): 65 %
- Recoil effect (Restricted arc if above 1.00): 0.49
Seaboat quality (Average = 1.00): 0.78

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.446
Length to Beam Ratio: 10.33 : 1
'Natural speed' for length: 17.61 kts
Power going to wave formation at top speed: 69 %
Trim (Max stability = 0, Max steadiness = 100): 83
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 20.00 ft / 6.10 m
- Forecastle (20 %): 18.00 ft / 5.49 m
- Mid (40 %): 10.00 ft / 3.05 m
- Quarterdeck (15 %): 10.00 ft / 3.05 m
- Stern: 10.00 ft / 3.05 m
- Average freeboard: 12.56 ft / 3.83 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 183.2 %
- Above water (accommodation/working, high = better): 67.6 %
Waterplane Area: 5,913 Square feet or 549 Square metres
Displacement factor (Displacement / loading): 57 %
Structure weight / hull surface area: 38 lbs/sq ft or 187 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.62
- Longitudinal: 1.95
- Overall: 0.70
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

Unmodified boats (all taken out of service in 1944)

DD Caldas (Ex-Ursa, purchased 1932)
DD Antioquia (Ex-Umbra, purchased 1932)
DD Baire (Ex-Underpin, purchased 1932)
DD Evigado (Ex-Unfeeling, purchased 1932)
DD Belio (Ex-Unseen, purchased 1932)
DD Liberatore (Ex-Unmoved, purchased 1932)
DD Corozal (Ex-Underwing, purchased 1933)
DD Cordoba (Ex-Upshur, purchased 1933)

Displacement:
1,123 t light; 1,156 t standard; 1,244 t normal; 1,315 t full load

Dimensions: Length overall / water x beam x draught
310.00 ft / 310.00 ft x 30.00 ft x 10.50 ft (normal load)
94.49 m / 94.49 m x 9.14 m x 3.20 m

Armament:
3 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1916 Model
Breech loading guns in deck mounts
on centreline ends, majority aft
2 - 1.00" / 25.4 mm guns in single mounts, 0.50lbs / 0.23kg shells, 1916 Model
Anti-aircraft guns in deck mounts
on side, all amidships
Weight of broadside 97 lbs / 44 kg
Shells per gun, main battery: 150
4 - 18.0" / 457.2 mm above water torpedoes

Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 39,799 shp / 29,690 Kw = 34.00 kts
Range 4,500nm at 10.00 kts
Bunker at max displacement = 159 tons

Complement:
104 - 136

Cost:
£0.253 million / $1.011 million

Distribution of weights at normal displacement:
Armament: 12 tons, 1.0 %
Machinery: 750 tons, 60.3 %
Hull, fittings & equipment: 341 tons, 27.4 %
Fuel, ammunition & stores: 121 tons, 9.7 %
Miscellaneous weights: 20 tons, 1.6 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
249 lbs / 113 Kg = 7.8 x 4.0 " / 102 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.27
Metacentric height 1.3 ft / 0.4 m
Roll period: 11.2 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.10
Seaboat quality (Average = 1.00): 0.72

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.446
Length to Beam Ratio: 10.33 : 1
'Natural speed' for length: 17.61 kts
Power going to wave formation at top speed: 71 %
Trim (Max stability = 0, Max steadiness = 100): 83
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: 20.00 ft / 6.10 m
- Forecastle (20 %): 18.00 ft / 5.49 m
- Mid (40 %): 10.00 ft / 3.05 m
- Quarterdeck (15 %): 10.00 ft / 3.05 m
- Stern: 10.00 ft / 3.05 m
- Average freeboard: 12.56 ft / 3.83 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 203.6 %
- Above water (accommodation/working, high = better): 95.1 %
Waterplane Area: 5,913 Square feet or 549 Square metres
Displacement factor (Displacement / loading): 40 %
Structure weight / hull surface area: 30 lbs/sq ft or 147 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.52
- Longitudinal: 1.67
- Overall: 0.58
Hull space for machinery, storage, compartmentation is extremely poor
Room for accommodation and workspaces is adequate
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather