Torpederos

[The Rock Doctor]

Caracas Class - 9 units, deleted, 1910

Cumana Class - 4 units, deleted and/or to training, 1910

Barquisimeto Class - 3 units, deleted 1911

Santa Maria Class - 8 units - to Peru 1914

Tucupita Class - 8 units

Tiger Class - 6 units, to New Switzerland 1906

Osprey Class - 3 units, to New Switzerland 1906

Lively Class - 4 units, to New Switzerland 1906

Foresight/Warspite Class - 12 units, deleted 1907

Havoc/Ibex Class - 12 units

Jatibonico Class - 6 units

Lagunillas Class - 6 units

Kuracki Class - 6 units

Monte Patria Class - 4 units

Natagaima Class - 9 units

Quito Class - 6 units

Santa Isabel Class - 18 units

Tulua Class - 6 units

Ustupo Class - 1 unit

Velez Class - 18 units

[The Rock Doctor]

Caracas Class

Caracas, TB-01, laid down 1889; scrapped, 1910
Maturin, TB-02, laid down 1890; scrapped, 1910
Bogota, TB-03, laid down 1890; scrapped, 1910
Buenaventura, TB-04, laid down 1890; scrapped, 1910
Quito, TB-05, laid down 1890; scrapped, 1910
Quibdo, TB-06, laid down 1890; scrapped, 1910
Monteria, TB-07, laid down 1890; scrapped, 1910
Maracaibo, TB-08, laid down 1891; scrapped, 1910
Valencia, TB-09, laid down 1891; scrapped, 1910

Length, 60.0 m x Beam, 6.0 m x Depth, 3.1 m
450 tonnes normal displacement (400 tonnes standard)

Main battery: 1 x 6.5-cm
Secondary battery: 5 x 4.7-cm
QF battery: 2 x 0.8-cm

Weight of broadside: 11 kg

2 TT, 40.6 cm

Hull unarmored

Battery armor:
Main, 2.0 cm shields / secondary, 2.0 cm


Maximum speed for 5004 indicated kw = 24.59 knots
Approximate cruising radius, 1900 nm / 10 knots

Typical complement: 49-64


Estimated cost, $218,000 (£54,000)

Remarks:

Caution: Hull structure is subject to strain in open-sea
conditions.

Caution: Magazines and engineering spaces are very cramped,
and lack adequate watertight subdivision.

Caution: Delicate, lightwight machinery.

Ship has slow, easy roll; a good, steady gun platform.

Good seaboat; rides out heavy weather easily.

Cramped ship; poor crew accommodation, limited working space.

Main deck secondary guns subject to being washed down
in a seaway.


Distribution of weights:
Percent
normal
displacement:

Armament ......................... 3 tonnes = 1 pct
Armor, total ..................... 3 tonnes = 1 pct

Armament 3 tonnes = 1 pct

Machinery ........................ 274 tonnes = 61 pct
Hull and fittings; equipment ..... 109 tonnes = 24 pct
Fuel, ammunition, stores ......... 62 tonnes = 14 pct
Miscellaneous weights ............ 0 tonnes = 0 pct
-----
450 tonnes = 100 pct

Estimated metacentric height, 0.3 m

Displacement summary:

Light ship: 389 tonnes
Standard displacement: 400 tonnes
Normal service: 450 tonnes
Full load: 489 tonnes

Loading submergence 196 tonnes/metre

+++++++++++++++++++++++++


Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.45

Shellfire needed to sink: 40 kg = 10.6 x 6.5-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)

Torpedoes needed to sink: 0.1
(Approximates number of 'typical'
torpedo hits needed to sink ship)

Relative steadiness as gun platform, 70 percent
(50 percent is 'average')

Relative rocking effect from firing to beam, 0.10

Relative quality as a seaboat: 1.38

+++++++++++++++++++++++++


Hull form characteristics:

Block coefficient: 0.40
Sharpness coefficient: 0.30
Hull speed coefficient 'M' = 7.84
'Natural speed' for length = 14.0 knots
Power going to wave formation
at top speed: 65 percent


Estimated hull characteristics and strength:

Relative underwater volume absorbed by
magazines and engineering spaces: 201 percent

Relative accommodation and working space: 64 percent


Displacement factor: 18 percent
(Displacement relative to loading factors)


Relative cross-sectional hull strength: 0.50
(Structure weight per square
metre of hull surface: 110 kg)

Relative longitudinal hull strength: 1.84
(for 3.00 m average freeboard;
freeboard adjustment +0.52 m)

Relative composite hull strength: 0.57

+++++++++++++++++++++++++


[Machine-readable parameters: Spring Style v. 1.2.1]

196.80 x 19.68 x 10.17; 9.84 -- Dimensions
0.40 -- Block coefficient
1889 -- Year laid down
24.59 / 1900 / 10.00; Reciprocating -- Speed / radius / cruise
0 tons -- Miscellaneous weights
++++++++++
1 x 2.56; 0 -- Main battery; turrets
Central positioning of guns
Gun-shields
:
5 x 1.85; 0 -- Secondary battery; turrets
Main deck battery
:
2 x 0.31 -- Tertiary (QF/AA) battery
:
0 -- No fourth (light) battery
2 / 0 / 15.98 -- TT / submerged / size
++++++++++
0.00 -- No belt armor
0.00 / 0.00 -- Deck / CT
0.79 / 0.79 / 0.00 / 0.00 -- Battery armor


(Note: For portability, values are stored in Anglo-American units)


+++++++++++++++++++++++++++++++++++++++++++++++++++++++

[The Rock Doctor]

Cumana Class

Cumana, TB-10, laid down 1893; scrapped, 1910
Cuidad Jorge, TB-11, laid down 1893; scrapped, 1910
Medellin, TB-12, laid down 1893; training ship, 1910; refitted 1911
Cucuta, TB-13, laid down 1893; training ship, 1910; refitted 1911

Cumana, laid down 1893

Length, 61.0 m x Beam, 6.1 m x Depth, 3.1 m
465 tonnes normal displacement (413 tonnes standard)

Main battery: 1 x 6.5-cm
Secondary battery: 5 x 4.7-cm
QF battery: 2 x 0.8-cm

Weight of broadside: 11 kg

2 TT, 45.7 cm

Hull unarmored

Battery armor:
Main, 2.0 cm shields / secondary, 2.0 cm


Maximum speed for 6001 indicated kw = 25.65 knots
Approximate cruising radius, 2000 nm / 10 knots

Typical complement: 50-65


Estimated cost, $227,000 (£57,000)

Remarks:

Caution: Hull structure is subject to strain in open-sea
conditions.

Caution: Magazines and engineering spaces are very cramped,
and lack adequate watertight subdivision.

Caution: Delicate, lightwight machinery.

Ship has slow, easy roll; a good, steady gun platform.

Good seaboat; rides out heavy weather easily.

Cramped ship; poor crew accommodation, limited working space.

Main deck secondary guns subject to being washed down
in a seaway.


Distribution of weights:
Percent
normal
displacement:

Armament ......................... 3 tonnes = 1 pct
Armor, total ..................... 3 tonnes = 1 pct

Armament 3 tonnes = 1 pct

Machinery ........................ 286 tonnes = 62 pct
Hull and fittings; equipment ..... 110 tonnes = 24 pct
Fuel, ammunition, stores ......... 63 tonnes = 14 pct
Miscellaneous weights ............ 0 tonnes = 0 pct
-----
465 tonnes = 100 pct

Estimated metacentric height, 0.2 m

Displacement summary:

Light ship: 402 tonnes
Standard displacement: 413 tonnes
Normal service: 465 tonnes
Full load: 505 tonnes

Loading submergence 203 tonnes/metre

+++++++++++++++++++++++++


Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.41

Shellfire needed to sink: 40 kg = 10.6 x 6.5-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)

Torpedoes needed to sink: 0.1
(Approximates number of 'typical'
torpedo hits needed to sink ship)

Relative steadiness as gun platform, 71 percent
(50 percent is 'average')

Relative rocking effect from firing to beam, 0.11

Relative quality as a seaboat: 1.30

+++++++++++++++++++++++++


Hull form characteristics:

Block coefficient: 0.40
Sharpness coefficient: 0.30
Hull speed coefficient 'M' = 7.89
'Natural speed' for length = 14.1 knots
Power going to wave formation
at top speed: 67 percent


Estimated hull characteristics and strength:

Relative underwater volume absorbed by
magazines and engineering spaces: 203 percent

Relative accommodation and working space: 63 percent


Displacement factor: 16 percent
(Displacement relative to loading factors)


Relative cross-sectional hull strength: 0.50
(Structure weight per square
metre of hull surface: 107 kg)

Relative longitudinal hull strength: 1.87
(for 3.10 m average freeboard;
freeboard adjustment +0.60 m)

Relative composite hull strength: 0.57

+++++++++++++++++++++++++


[Machine-readable parameters: Spring Style v. 1.2.1]

200.08 x 20.01 x 10.17; 10.17 -- Dimensions
0.40 -- Block coefficient
1893 -- Year laid down
25.65 / 2000 / 10.00; Reciprocating -- Speed / radius / cruise
0 tons -- Miscellaneous weights
++++++++++
1 x 2.56; 0 -- Main battery; turrets
Central positioning of guns
Gun-shields
:
5 x 1.85; 0 -- Secondary battery; turrets
Main deck battery
:
2 x 0.31 -- Tertiary (QF/AA) battery
:
0 -- No fourth (light) battery
2 / 0 / 17.99 -- TT / submerged / size
++++++++++
0.00 -- No belt armor
0.00 / 0.00 -- Deck / CT
0.79 / 0.79 / 0.00 / 0.00 -- Battery armor


(Note: For portability, values are stored in Anglo-American units)


+++++++++++++++++++++++++++++++++++++++++++++++++++++++

[The Rock Doctor]

Barquisimeto Class

Barquisimeto, TB-14, laid down 1896, deleted 1911
Coro, TB-15, laid down 1896, deleted 1911
Riohacha, TB-16, laid down 1896, deleted 1911

Length, 61.0 m x Beam, 6.1 m x Depth, 3.1 m
465 tonnes normal displacement (416 tonnes standard)

Main battery: 2 x 6.5-cm
Secondary battery: 4 x 4.7-cm
QF battery: 2 x 0.8-cm

Weight of broadside: 13 kg

2 TT, 45.7 cm

Hull unarmored

Battery armor:
Main, 2.0 cm shields / secondary, 2.0 cm


Maximum speed for 7003 indicated kw = 26.59 knots
Approximate cruising radius, 2000 nm / 10 knots

Typical complement: 50-65


Estimated cost, $231,000 (£58,000)

Remarks:

Caution: Hull structure is subject to strain in open-sea
conditions.

Caution: Magazines and engineering spaces are very cramped,
and lack adequate watertight subdivision.

Caution: Delicate, lightwight machinery.

Ship has slow, easy roll; a good, steady gun platform.

Cramped ship; poor crew accommodation, limited working space.

Main deck secondary guns subject to being washed down
in a seaway.


Distribution of weights:
Percent
normal
displacement:

Armament ......................... 4 tonnes = 1 pct
Armor, total ..................... 3 tonnes = 1 pct

Armament 3 tonnes = 1 pct

Machinery ........................ 290 tonnes = 62 pct
Hull and fittings; equipment ..... 108 tonnes = 23 pct
Fuel, ammunition, stores ......... 61 tonnes = 13 pct
Miscellaneous weights ............ 0 tonnes = 0 pct
-----
465 tonnes = 100 pct

Estimated metacentric height, 0.2 m

Displacement summary:

Light ship: 405 tonnes
Standard displacement: 416 tonnes
Normal service: 465 tonnes
Full load: 502 tonnes

Loading submergence 203 tonnes/metre

+++++++++++++++++++++++++


Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.30

Shellfire needed to sink: 37 kg = 9.7 x 6.5-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)

Torpedoes needed to sink: 0.1
(Approximates number of 'typical'
torpedo hits needed to sink ship)

Relative steadiness as gun platform, 72 percent
(50 percent is 'average')

Relative rocking effect from firing to beam, 0.14

Relative quality as a seaboat: 1.09

+++++++++++++++++++++++++


Hull form characteristics:

Block coefficient: 0.40
Sharpness coefficient: 0.30
Hull speed coefficient 'M' = 7.89
'Natural speed' for length = 14.1 knots
Power going to wave formation
at top speed: 68 percent


Estimated hull characteristics and strength:

Relative underwater volume absorbed by
magazines and engineering spaces: 207 percent

Relative accommodation and working space: 61 percent


Displacement factor: 15 percent
(Displacement relative to loading factors)


Relative cross-sectional hull strength: 0.50
(Structure weight per square
metre of hull surface: 106 kg)

Relative longitudinal hull strength: 1.82
(for 3.00 m average freeboard;
freeboard adjustment +0.50 m)

Relative composite hull strength: 0.57

+++++++++++++++++++++++++


[Machine-readable parameters: Spring Style v. 1.2.1]

200.08 x 20.01 x 10.17; 9.84 -- Dimensions
0.40 -- Block coefficient
1896 -- Year laid down
26.59 / 2000 / 10.00; Reciprocating -- Speed / radius / cruise
0 tons -- Miscellaneous weights
++++++++++
2 x 2.56; 0 -- Main battery; turrets
Central positioning of guns
Gun-shields
:
4 x 1.85; 0 -- Secondary battery; turrets
Main deck battery
:
2 x 0.30 -- Tertiary (QF/AA) battery
:
0 -- No fourth (light) battery
2 / 0 / 17.99 -- TT / submerged / size
++++++++++
0.00 -- No belt armor
0.00 / 0.00 -- Deck / CT
0.79 / 0.79 / 0.00 / 0.00 -- Battery armor


(Note: For portability, values are stored in Anglo-American units)


+++++++++++++++++++++++++++++++++++++++++++++++++++++++

[The Rock Doctor]

Santa Maria Class

Santa Maria, TB-17, laid down 1899, to Peru 1914
Cartagena, TB-18, laid down 1899, to Peru 1914
Esmeraldas, TB-19, laid down 1899, to Peru 1914
Guayaquil, TB-20, laid down 1899, to Peru 1914
La Guaira, TB-21, laid down 1899, to Peru 1914
David, TB-22, laid down 1900, to Peru 1914
Cali, TB-23, laid down 1900, to Peru 1914
Barranquilla, TB-24, laid down 1900, to Peru 1914

Length, 61.0 m x Beam, 6.1 m x Depth, 3.1 m
465 tonnes normal displacement (419 tonnes standard)

Main battery: 2 x 6.5-cm
Secondary battery: 4 x 4.7-cm
QF battery: 2 x 0.8-cm

Weight of broadside: 13 kg

3 TT, 45.7 cm

Hull unarmored

Battery armor:
Main, 2.0 cm shields / secondary, 2.0 cm


Maximum speed for 7500 indicated kw = 27.02 knots
Approximate cruising radius, 2000 nm / 10 knots

Typical complement: 50-65


Estimated cost, $232,000 (£58,000)

Remarks:

Caution: Hull structure is subject to strain in open-sea
conditions.

Caution: Magazines and engineering spaces are very cramped,
and lack adequate watertight subdivision.

Caution: Delicate, lightwight machinery.

Ship has slow, easy roll; a good, steady gun platform.

Cramped ship; poor crew accommodation, limited working space.

Main deck secondary guns subject to being washed down
in a seaway.


Distribution of weights:
Percent
normal
displacement:

Armament ......................... 4 tonnes = 1 pct
Armor, total ..................... 3 tonnes = 1 pct

Armament 3 tonnes = 1 pct

Machinery ........................ 290 tonnes = 62 pct
Hull and fittings; equipment ..... 110 tonnes = 24 pct
Fuel, ammunition, stores ......... 58 tonnes = 13 pct
Miscellaneous weights ............ 0 tonnes = 0 pct
-----
465 tonnes = 100 pct

Estimated metacentric height, 0.2 m

Displacement summary:

Light ship: 407 tonnes
Standard displacement: 419 tonnes
Normal service: 465 tonnes
Full load: 500 tonnes

Loading submergence 203 tonnes/metre

+++++++++++++++++++++++++


Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.22

Shellfire needed to sink: 37 kg = 9.7 x 6.5-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)

Torpedoes needed to sink: 0.1
(Approximates number of 'typical'
torpedo hits needed to sink ship)

Relative steadiness as gun platform, 71 percent
(50 percent is 'average')

Relative rocking effect from firing to beam, 0.15

Relative quality as a seaboat: 1.09

+++++++++++++++++++++++++


Hull form characteristics:

Block coefficient: 0.40
Sharpness coefficient: 0.30
Hull speed coefficient 'M' = 7.89
'Natural speed' for length = 14.1 knots
Power going to wave formation
at top speed: 69 percent


Estimated hull characteristics and strength:

Relative underwater volume absorbed by
magazines and engineering spaces: 207 percent

Relative accommodation and working space: 52 percent


Displacement factor: 14 percent
(Displacement relative to loading factors)


Relative cross-sectional hull strength: 0.50
(Structure weight per square
metre of hull surface: 107 kg)

Relative longitudinal hull strength: 1.97
(for 3.10 m average freeboard;
freeboard adjustment +0.60 m)

Relative composite hull strength: 0.58

+++++++++++++++++++++++++


[Machine-readable parameters: Spring Style v. 1.2.1]

200.08 x 20.01 x 10.17; 10.17 -- Dimensions
0.40 -- Block coefficient
1899 -- Year laid down
27.02 / 2000 / 10.00; Reciprocating -- Speed / radius / cruise
0 tons -- Miscellaneous weights
++++++++++
2 x 2.56; 0 -- Main battery; turrets
Central positioning of guns
Gun-shields
:
4 x 1.85; 0 -- Secondary battery; turrets
Main deck battery
:
2 x 0.31 -- Tertiary (QF/AA) battery
:
0 -- No fourth (light) battery
3 / 0 / 17.99 -- TT / submerged / size
++++++++++
0.00 -- No belt armor
0.00 / 0.00 -- Deck / CT
0.79 / 0.79 / 0.00 / 0.00 -- Battery armor


(Note: For portability, values are stored in Anglo-American units)


+++++++++++++++++++++++++++++++++++++++++++++++++++++++

[The Rock Doctor]

Tucupita Class

The Tucupita class torpedoboats were the last such ships to be built with reciprocating engines rather than turbines.  Now on the verge of obsolesence, it's been decided to undertake a very modest refit to extend their lives and make them capable of retaining a basic harbour defence function.

Apart from the basic refit, the changes are limited to replacement of the armament:  the eight (!) guns of three different calibers are replaced by a single 76.2 mm and two newer-model 47mm QF guns.  The two single 457mm torpedo tubes are replaced by a new triple 533mm carriage.  Aft, the weight/space savings resulting from the downsized armament is used to install two racks of six depth charges.

The class was refitted in the first half of 1913, and is expected to be in service for several years to come.

Top view is as completed; bottom view is as refitted.  Sim is as refitted.

(Note that the class was original design for N2 in Springstyle, hence the odd choice of engine power)



Tucupita, TBD-25, laid down 1902
Puerto Ayacucho, TBD-26, laid down 1902
Ibaque, TBD-27, laid down 1902
Pasto, TBD-28, laid down 1902
Havana, TBD-29, laid down 1903
Holguin, TBD-30, laid down 1903
Armenia, TBD-31, laid down 1903
Tachira, TBD-32, laid down 1903

Tucupita, laid down 1902, refitted 1913

Displacement:
   592 t light; 609 t standard; 692 t normal; 759 t full load

Dimensions: Length overall / water x beam x draught
   229.66 ft / 229.66 ft x 22.97 ft x 11.48 ft (normal load)
   70.00 m / 70.00 m x 7.00 m  x 3.50 m

Armament:
      1 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1902 Model
     Breech loading gun in deck mounts
     on centreline ends, evenly spread
      2 - 1.85" / 47.0 mm guns in single mounts, 3.17lbs / 1.44kg shells, 1902 Model
     Quick firing guns in deck mounts
     on side, all amidships
      2 - 0.31" / 8.0 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1902 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 20 lbs / 9 kg
   Shells per gun, main battery: 200
   3 - 21.0" / 533 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.98" / 25 mm         -               -
   3rd:   0.08" / 2 mm         -               -

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 10,709 ihp / 7,989 Kw = 26.35 kts
   Range 3,000nm at 10.00 kts (Bunkerage = 150 tons)
     Caution: Delicate, lightweight machinery

Complement:
   66 - 87

Cost:
   £0.082 million / $0.329 million

Distribution of weights at normal displacement:
   Armament: 2 tons, 0.4 %
   Armour: 2 tons, 0.3 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 2 tons, 0.3 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 425 tons, 61.4 %
   Hull, fittings & equipment: 155 tons, 22.4 %
   Fuel, ammunition & stores: 100 tons, 14.4 %
   Miscellaneous weights: 8 tons, 1.2 %
-4 t: Depth Charges
-3 t:  Torpedos
-1 t:  Weight Reserve

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     135 lbs / 61 Kg = 10.0 x 3.0 " / 76 mm shells or 0.1 torpedoes
   Stability (Unstable if below 1.00): 1.36
   Metacentric height 0.9 ft / 0.3 m
   Roll period: 9.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.05
   Seaboat quality  (Average = 1.00): 1.08

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.400
   Length to Beam Ratio: 10.00 : 1
   'Natural speed' for length: 15.15 kts
   Power going to wave formation at top speed: 65 %
   Trim (Max stability = 0, Max steadiness = 100): 65
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: -3.28 ft / -1.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      9.84 ft / 3.00 m
      - Forecastle (20 %):   9.84 ft / 3.00 m
      - Mid (50 %):      9.84 ft / 3.00 m
      - Quarterdeck (15 %):   9.84 ft / 3.00 m
      - Stern:      9.84 ft / 3.00 m
      - Average freeboard:   9.84 ft / 3.00 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 202.3 %
      - Above water (accommodation/working, high = better): 56.1 %
   Waterplane Area: 3,247 Square feet or 302 Square metres
   Displacement factor (Displacement / loading): 21 %
   Structure weight / hull surface area: 22 lbs/sq ft or 108 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.51
      - Longitudinal: 2.10
      - Overall: 0.59
   Hull space for machinery, storage, compartmentation is extremely poor
   Room for accommodation and workspaces is cramped
   Ship has slow, easy roll, a good, steady gun platform



As Originally Built, 1902

Length, 70.0 m x Beam, 7.0 m x Depth, 3.5 m
692 tonnes normal displacement (607 tonnes standard)

Main battery: 2 x 10.0-cm
Secondary battery: 2 x 6.5-cm
QF battery: 4 x 4.7-cm
Light battery: 2 x 0.8-cm

Weight of broadside: 41 kg

2 TT, 45.7 cm

Hull unarmored

Battery armor:
Main, 3.0 cm shields / secondary, 2.0 cm
QF, 2.0 cm shields

Maximum speed for 8005 indicated kw = 26.35 knots
Approximate cruising radius, 3000 nm / 10 knots

Typical complement: 67-88


Estimated cost, $354,000 (£88,000)

Remarks:

Caution: Hull structure is subject to strain in open-sea
conditions.

Caution: Magazines and engineering spaces are very cramped,
and lack adequate watertight subdivision.

Caution: Delicate, lightwight machinery.

Ship has slow, easy roll; a good, steady gun platform.

Cramped ship; poor crew accommodation, limited working space.

Main deck secondary guns subject to being washed down
in a seaway.


Distribution of weights:
Percent
normal
displacement:

Armament ......................... 11 tonnes = 2 pct
Armor, total ..................... 6 tonnes = 1 pct

Armament 6 tonnes = 1 pct

Machinery ........................ 417 tonnes = 60 pct
Hull and fittings; equipment ..... 150 tonnes = 22 pct
Fuel, ammunition, stores ......... 106 tonnes = 15 pct
Miscellaneous weights ............ 0 tonnes = 0 pct
-----
692 tonnes = 100 pct

Estimated metacentric height, 0.3 m

Displacement summary:

Light ship: 585 tonnes
Standard displacement: 607 tonnes
Normal service: 692 tonnes
Full load: 757 tonnes

Loading submergence 267 tonnes/metre

+++++++++++++++++++++++++


Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.34

Shellfire needed to sink: 52 kg = 3.8 x 10.0-cm shells
(Approximates weight of penetrating
shell hits needed to sink ship,
not counting critical hits)

Torpedoes needed to sink: 0.1
(Approximates number of 'typical'
torpedo hits needed to sink ship)

Relative steadiness as gun platform, 71 percent
(50 percent is 'average')

Relative rocking effect from firing to beam, 0.23

Relative quality as a seaboat: 1.05

+++++++++++++++++++++++++


Hull form characteristics:

Block coefficient: 0.40
Sharpness coefficient: 0.30
Hull speed coefficient 'M' = 7.93
'Natural speed' for length = 15.2 knots
Power going to wave formation
at top speed: 65 percent


Estimated hull characteristics and strength:

Relative underwater volume absorbed by
magazines and engineering spaces: 207 percent

Relative accommodation and working space: 64 percent


Displacement factor: 21 percent
(Displacement relative to loading factors)


Relative cross-sectional hull strength: 0.51
(Structure weight per square
metre of hull surface: 118 kg)

Relative longitudinal hull strength: 1.48
(for 3.00 m average freeboard;
freeboard adjustment +0.29 m)

Relative composite hull strength: 0.57

+++++++++++++++++++++++++


[Machine-readable parameters: Spring Style v. 1.2.1]

229.60 x 22.96 x 11.48; 9.84 -- Dimensions
0.40 -- Block coefficient
1902 -- Year laid down
26.35 / 3000 / 10.00; Reciprocating -- Speed / radius / cruise
0 tons -- Miscellaneous weights
++++++++++
2 x 3.94; 0 -- Main battery; turrets
Central positioning of guns
Gun-shields
:
2 x 2.56; 0 -- Secondary battery; turrets
Main deck battery
:
4 x 1.85 -- Tertiary (QF/AA) battery
Gun-shields
:
2 x 0.31 -- Fourth (light) battery
2 / 0 / 17.99 -- TT / submerged / size
++++++++++
0.00 -- No belt armor
0.00 / 0.00 -- Deck / CT
1.18 / 0.79 / 0.79 / 0.00 -- Battery armor


(Note: For portability, values are stored in Anglo-American units)


+++++++++++++++++++++++++++++++++++++++++++++++++++++++

[The Rock Doctor]

Tiger Class

All units transferred to New Switzerland, 1906

Tiger, TBD-33, laid down 1891
Lion, TBD-34, laid down 1891
Wolfhound, TBD-35, laid down 1891
White Bear, TBD-36, laid down 1892
Ferret, TBD-37, laid down 1892
Serpent, TBD-38, laid down 1892

Displacement:
307 t light; 316 t standard; 350 t normal; 377 t full load

Dimensions: Length overall / water x beam x draught
170.00 ft / 170.00 ft x 17.00 ft x 8.00 ft (normal load)
51.82 m / 51.82 m x 5.18 m x 2.44 m

Armament:
2 - 3.00" / 76.2 mm guns in single mounts, 13.00lbs / 5.90kg shells, 1891 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread, 1 raised mount
Weight of broadside 26 lbs / 12 kg
Shells per gun, main battery: 150
2 - 16.0" / 406.4 mm above water torpedoes

Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 1 shaft, 7,162 ihp / 5,343 Kw = 25.00 kts
Range 1,500nm at 10.00 kts
Bunker at max displacement = 61 tons (100% coal)
Caution: Delicate, lightweight machinery

Complement:
39 - 52

Cost:
£0.044 million / $0.178 million

Distribution of weights at normal displacement:
Armament: 3 tons, 1.0 %
Machinery: 221 tons, 63.0 %
Hull, fittings & equipment: 83 tons, 23.8 %
Fuel, ammunition & stores: 43 tons, 12.2 %
Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
61 lbs / 27 Kg = 4.5 x 3.0 " / 76 mm shells or 0.1 torpedoes
Stability (Unstable if below 1.00): 1.40
Metacentric height 0.6 ft / 0.2 m
Roll period: 9.0 seconds
Steadiness - As gun platform (Average = 50 %): 54 %
- Recoil effect (Restricted arc if above 1.00): 0.19
Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.530
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 13.04 kts
Power going to wave formation at top speed: 74 %
Trim (Max stability = 0, Max steadiness = 100): 54
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: 11.00 ft / 3.35 m
- Forecastle (20 %): 11.00 ft / 3.35 m (9.50 ft / 2.90 m aft of break)
- Mid (50 %): 9.50 ft / 2.90 m
- Quarterdeck (15 %): 9.50 ft / 2.90 m
- Stern: 9.50 ft / 2.90 m
- Average freeboard: 9.80 ft / 2.99 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 210.5 %
- Above water (accommodation/working, high = better): 66.4 %
Waterplane Area: 1,979 Square feet or 184 Square metres
Displacement factor (Displacement / loading): 13 %
Structure weight / hull surface area: 16 lbs/sq ft or 79 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.41
- Longitudinal: 3.94
- Overall: 0.51
Hull space for machinery, storage, compartmentation is extremely poor
Room for accommodation and workspaces is cramped

[The Rock Doctor]

Osprey Class

All units transferred to New Switzerland, 1906

Osprey, TBD-39, laid down 1893
Peregrine, TBD-40, laid down 1893
Sphinx, TBD-41, laid down 1894

Displacement:
331 t light; 341 t standard; 375 t normal; 402 t full load

Dimensions: Length overall / water x beam x draught
180.00 ft / 180.00 ft x 18.00 ft x 8.50 ft (normal load)
54.86 m / 54.86 m x 5.49 m x 2.59 m

Armament:
2 - 3.00" / 76.2 mm guns in single mounts, 13.00lbs / 5.90kg shells, 1893 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread, 1 raised mount
Weight of broadside 27 lbs / 12 kg
Shells per gun, main battery: 150
2 - 18.0" / 457.2 mm above water torpedoes

Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 1 shaft, 8,293 ihp / 6,187 Kw = 26.00 kts
Range 1,500nm at 10.00 kts
Bunker at max displacement = 61 tons (100% coal)
Caution: Delicate, lightweight machinery

Complement:
42 - 55

Cost:
£0.048 million / $0.191 million

Distribution of weights at normal displacement:
Armament: 3 tons, 0.9 %
Machinery: 238 tons, 63.4 %
Hull, fittings & equipment: 90 tons, 24.1 %
Fuel, ammunition & stores: 44 tons, 11.6 %
Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
64 lbs / 29 Kg = 4.7 x 3.0 " / 76 mm shells or 0.1 torpedoes
Stability (Unstable if below 1.00): 1.40
Metacentric height 0.7 ft / 0.2 m
Roll period: 9.1 seconds
Steadiness - As gun platform (Average = 50 %): 54 %
- Recoil effect (Restricted arc if above 1.00): 0.16
Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.477
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 13.42 kts
Power going to wave formation at top speed: 73 %
Trim (Max stability = 0, Max steadiness = 100): 54
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: 11.25 ft / 3.43 m
- Forecastle (20 %): 11.25 ft / 3.43 m (9.50 ft / 2.90 m aft of break)
- Mid (50 %): 9.50 ft / 2.90 m
- Quarterdeck (15 %): 9.50 ft / 2.90 m
- Stern: 9.50 ft / 2.90 m
- Average freeboard: 9.85 ft / 3.00 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 211.3 %
- Above water (accommodation/working, high = better): 62.6 %
Waterplane Area: 2,114 Square feet or 196 Square metres
Displacement factor (Displacement / loading): 13 %
Structure weight / hull surface area: 17 lbs/sq ft or 82 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.41
- Longitudinal: 3.55
- Overall: 0.51
Hull space for machinery, storage, compartmentation is extremely poor
Room for accommodation and workspaces is cramped

[The Rock Doctor]

Lively Class

All units transferred to New Switzerland, 1906

Lively, TBD-42, laid down 1895
Surprise, TBD-43, laid down 1895
Fortitude, TBD-44, laid down 1895
Eclipse, TBD-45, laid down 1896

Displacement:
356 t light; 366 t standard; 400 t normal; 427 t full load

Dimensions: Length overall / water x beam x draught
190.00 ft / 190.00 ft x 19.00 ft x 9.00 ft (normal load)
57.91 m / 57.91 m x 5.79 m x 2.74 m

Armament:
2 - 3.00" / 76.2 mm guns in single mounts, 13.00lbs / 5.90kg shells, 1895 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread, 1 raised mount
Weight of broadside 27 lbs / 12 kg
Shells per gun, main battery: 150
2 - 18.0" / 457.2 mm above water torpedoes

Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 1 shaft, 9,560 ihp / 7,132 Kw = 27.00 kts
Range 1,500nm at 10.00 kts
Bunker at max displacement = 61 tons (100% coal)
Caution: Delicate, lightweight machinery

Complement:
44 - 58

Cost:
£0.051 million / $0.204 million

Distribution of weights at normal displacement:
Armament: 3 tons, 0.8 %
Machinery: 255 tons, 63.8 %
Hull, fittings & equipment: 97 tons, 24.3 %
Fuel, ammunition & stores: 44 tons, 11.1 %
Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
69 lbs / 31 Kg = 5.1 x 3.0 " / 76 mm shells or 0.1 torpedoes
Stability (Unstable if below 1.00): 1.45
Metacentric height 0.8 ft / 0.2 m
Roll period: 9.0 seconds
Steadiness - As gun platform (Average = 50 %): 54 %
- Recoil effect (Restricted arc if above 1.00): 0.13
Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.431
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 13.78 kts
Power going to wave formation at top speed: 72 %
Trim (Max stability = 0, Max steadiness = 100): 54
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: 11.25 ft / 3.43 m
- Forecastle (20 %): 11.25 ft / 3.43 m (9.50 ft / 2.90 m aft of break)
- Mid (50 %): 9.50 ft / 2.90 m
- Quarterdeck (15 %): 9.50 ft / 2.90 m
- Stern: 9.50 ft / 2.90 m
- Average freeboard: 9.85 ft / 3.00 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 212.1 %
- Above water (accommodation/working, high = better): 67.1 %
Waterplane Area: 2,268 Square feet or 211 Square metres
Displacement factor (Displacement / loading): 12 %
Structure weight / hull surface area: 17 lbs/sq ft or 85 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.41
- Longitudinal: 3.20
- Overall: 0.51
Hull space for machinery, storage, compartmentation is extremely poor
Room for accommodation and workspaces is cramped

[The Rock Doctor]

Foresight/Warspite Class

All units deleted from service, 1907

Foresight, TBD-46, laid down 1897
Gallant, TBD-47, laid down 1897
Onslaught, TBD-48, laid down 1897
Wrathful, TBD-49, laid down 1898
Vanguard, TBD-50, laid down 1898
Daring, TBD-51, laid down 1898
Warspite, TBD-52, laid down 1899
Dauntless, TBD-53, laid down 1899
Defiant, TBD-54, laid down 1899
Defender, TBD-55, laid down 1900
Reliant, TBD-56, laid down 1900
Electra, TBD-57, laid down 1900

Displacement:
357 t light; 367 t standard; 400 t normal; 426 t full load

Dimensions: Length overall / water x beam x draught
190.00 ft / 190.00 ft x 19.00 ft x 9.00 ft (normal load)
57.91 m / 57.91 m x 5.79 m x 2.74 m

Armament:
2 - 3.00" / 76.2 mm guns in single mounts, 13.00lbs / 5.90kg shells, 1897 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread, 1 raised mount
Weight of broadside 26 lbs / 12 kg
Shells per gun, main battery: 150
4 - 18.0" / 457.2 mm above water torpedoes

Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 1 shaft, 9,560 ihp / 7,132 Kw = 27.00 kts
Range 1,500nm at 10.00 kts
Bunker at max displacement = 59 tons (100% coal)
Caution: Delicate, lightweight machinery

Complement:
44 - 58

Cost:
£0.051 million / $0.204 million

Distribution of weights at normal displacement:
Armament: 3 tons, 0.8 %
Machinery: 254 tons, 63.5 %
Hull, fittings & equipment: 99 tons, 24.9 %
Fuel, ammunition & stores: 43 tons, 10.8 %
Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
67 lbs / 30 Kg = 5.0 x 3.0 " / 76 mm shells or 0.1 torpedoes
Stability (Unstable if below 1.00): 1.25
Metacentric height 0.6 ft / 0.2 m
Roll period: 10.1 seconds
Steadiness - As gun platform (Average = 50 %): 54 %
- Recoil effect (Restricted arc if above 1.00): 0.15
Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.431
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 13.78 kts
Power going to wave formation at top speed: 72 %
Trim (Max stability = 0, Max steadiness = 100): 54
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: 11.40 ft / 3.47 m
- Forecastle (20 %): 11.40 ft / 3.47 m (9.70 ft / 2.96 m aft of break)
- Mid (50 %): 9.70 ft / 2.96 m
- Quarterdeck (15 %): 9.70 ft / 2.96 m
- Stern: 9.70 ft / 2.96 m
- Average freeboard: 10.04 ft / 3.06 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 211.2 %
- Above water (accommodation/working, high = better): 41.8 %
Waterplane Area: 2,268 Square feet or 211 Square metres
Displacement factor (Displacement / loading): 13 %
Structure weight / hull surface area: 17 lbs/sq ft or 85 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.42
- Longitudinal: 3.51
- Overall: 0.52
Hull space for machinery, storage, compartmentation is extremely poor
Room for accommodation and workspaces is extremely poor

[The Rock Doctor]

Havoc Class

The design history is a bit quaint; it was originally a GC design intended to supplement the Battle Fleet's torpedo forces.  However, the priority for torpedo forces is now to replace the earliest, small and somewhat flimsy IC-era torpedo-boats retained in post-amalgamation service.  Jamaican naval shipwrights have analyzed the design, and made the modifications necessary for domestic production. 

Whereas the Gran Colombian design would have fielded a pair of 100 mm and three 65 mm guns, this design features five 76.2 mm guns, plus two banks of torpedoes.  One gun is forward, two abreast the funnels, one aft of the funnels, and one at the stern.  The torpedoes sit between the midships and aft guns.

Havoc and Ibex differ slightly from their sisters in that the midships 76.2 mm gun has been omitted in favor of a wireless shack to allow better coordination with larger fleet units and shore commands.  Havoc's design thus adds 5 t of miscelleaneous weight, 0.01 seakeeping, and is $0.1 less expensive than her sisters.

The design posted below is for the standard units; Havoc and Ibex can be posted separately if requested.

Note:  the class is somewhat based on American "Flivver" type destroyers of ~1909.  Thus I'm happy that the armament and three screws can fit on the hull.


Hurricane and sisters as built; Havoc has radio shack in place of midships gun...

Havoc, TB-58, laid down 1906 (Engine 1905)
Hurricane, TB-59, laid down 1906 (Engine 1905)
Harrier, TB-60, laid down 1906 (Engine 1905)
Harvester, TB-61, laid down 1906 (Engine 1905)
Hummingbird, TB-62, laid down 1906 (Engine 1905)
Hector, TB-63, laid down 1906 (Engine 1905)
Ibex, TB-64, laid down 1906 (Engine 1905)
Icarus, TB-65, laid down 1906 (Engine 1905)
Illustrious, TB-66, laid down 1906 (Engine 1905)
Indefatigable, TB-67, laid down 1906 (Engine 1905)
Imperator, TB-68, laid down 1906 (Engine 1905)
Intrepid, TB-69, laid down 1906 (Engine 1905)


Displacement:
   699 t light; 723 t standard; 814 t normal; 886 t full load

Dimensions: Length overall / water x beam x draught
   276.51 ft / 275.59 ft x 26.25 ft x 9.84 ft (normal load)
   84.28 m / 84.00 m x 8.00 m  x 3.00 m

Armament:
      3 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1906 Model
     Breech loading guns in deck mounts with hoists
     on centreline ends, majority aft
      2 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1906 Model
     Quick firing guns in deck mounts with hoists
     on side, all amidships
      2 - 0.31" / 8.0 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1906 Model
     Machine guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 68 lbs / 31 kg
   Shells per gun, main battery: 200
   4 - 18.0" / 457 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.18" / 30 mm   0.79" / 20 mm      1.18" / 30 mm
   2nd:   1.18" / 30 mm   0.79" / 20 mm      1.18" / 30 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 3 shafts, 13,500 shp / 10,071 Kw = 27.91 kts
   Range 2,500nm at 10.00 kts (Bunkerage = 162 tons)

Complement:
   76 - 99

Cost:
   £0.097 million / $0.386 million

Distribution of weights at normal displacement:
   Armament: 8 tons, 1.0 %
   Armour: 10 tons, 1.3 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 10 tons, 1.3 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 465 tons, 57.1 %
   Hull, fittings & equipment: 203 tons, 25.0 %
   Fuel, ammunition & stores: 115 tons, 14.1 %
   Miscellaneous weights: 12 tons, 1.5 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     179 lbs / 81 Kg = 13.3 x 3.0 " / 76 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.36
   Metacentric height 1.2 ft / 0.4 m
   Roll period: 10.2 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.22
   Seaboat quality  (Average = 1.00): 1.01

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.400
   Length to Beam Ratio: 10.50 : 1
   'Natural speed' for length: 16.60 kts
   Power going to wave formation at top speed: 63 %
   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:      10.50 ft / 3.20 m
      - Forecastle (20 %):   10.50 ft / 3.20 m
      - Mid (50 %):      10.50 ft / 3.20 m (10.17 ft / 3.10 m aft of break)
      - Quarterdeck (15 %):   10.17 ft / 3.10 m
      - Stern:      10.17 ft / 3.10 m
      - Average freeboard:   10.33 ft / 3.15 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 194.1 %
      - Above water (accommodation/working, high = better): 83.0 %
   Waterplane Area: 4,453 Square feet or 414 Square metres
   Displacement factor (Displacement / loading): 35 %
   Structure weight / hull surface area: 24 lbs/sq ft or 119 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.25
      - Overall: 0.54
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is cramped
   Ship has slow, easy roll, a good, steady gun platform

[The Rock Doctor]

Jatibonico Class

Improved versions of the Havoc class, with Jatibonico sacrificing a gun for a five tonne wireless shack, as seen in Havoc and Ibex above.

TB-70, Jatibonico, laid down 1908
TB-71, Jiguani, laid down 1908
TB-72, Jaguey Grande, laid down 1908
TB-73, Jovellanos, laid down 1908
TB-74, Juangriego, laid down 1908
TB-75, Johi, laid down 1908

Enter ship name, Enter country Enter ship type laid down 1908 (Engine 1909)

Displacement:
   717 t light; 742 t standard; 814 t normal; 871 t full load

Dimensions: Length overall / water x beam x draught
   276.68 ft / 275.59 ft x 26.25 ft x 9.84 ft (normal load)
   84.33 m / 84.00 m x 8.00 m  x 3.00 m

Armament:
      3 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1908 Model
     Breech loading guns in deck mounts with hoists
     on centreline ends, majority aft
      2 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1908 Model
     Quick firing guns in deck mounts with hoists
     on side, all amidships
      2 - 0.31" / 8.0 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1908 Model
     Machine guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 68 lbs / 31 kg
   Shells per gun, main battery: 200
   4 - 18.0" / 457 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
   2nd:   0.98" / 25 mm   0.79" / 20 mm      0.98" / 25 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 3 shafts, 15,000 shp / 11,190 Kw = 28.62 kts
   Range 2,500nm at 10.00 kts (Bunkerage = 130 tons)

Complement:
   76 - 99

Cost:
   £0.092 million / $0.368 million

Distribution of weights at normal displacement:
   Armament: 8 tons, 1.0 %
   Armour: 10 tons, 1.2 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 10 tons, 1.2 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 427 tons, 52.4 %
   Hull, fittings & equipment: 253 tons, 31.1 %
   Fuel, ammunition & stores: 97 tons, 11.9 %
   Miscellaneous weights: 19 tons, 2.3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     246 lbs / 112 Kg = 18.2 x 3.0 " / 76 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.30
   Metacentric height 1.1 ft / 0.3 m
   Roll period: 10.6 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.28
   Seaboat quality  (Average = 1.00): 1.30

Hull form characteristics:
   Hull has rise forward of midbreak, low quarterdeck
   Block coefficient: 0.400
   Length to Beam Ratio: 10.50 : 1
   'Natural speed' for length: 16.60 kts
   Power going to wave formation at top speed: 64 %
   Trim (Max stability = 0, Max steadiness = 100): 54
   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:      12.47 ft / 3.80 m
      - Forecastle (20 %):   12.47 ft / 3.80 m
      - Mid (50 %):      12.47 ft / 3.80 m (12.14 ft / 3.70 m aft of break)
      - Quarterdeck (15 %):   12.14 ft / 3.70 m (12.70 ft / 3.87 m before break)
      - Stern:      12.14 ft / 3.70 m
      - Average freeboard:   12.40 ft / 3.78 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 180.1 %
      - Above water (accommodation/working, high = better): 100.0 %
   Waterplane Area: 4,453 Square feet or 414 Square metres
   Displacement factor (Displacement / loading): 51 %
   Structure weight / hull surface area: 26 lbs/sq ft or 128 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 2.42
      - Overall: 0.58
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

[The Rock Doctor]

Lagunillas Class

A slightly larger version of the J/I/H class torpedo-boats, and close enough in appearance that I didn't bother with a drawing.

Unlike previous classes, all are fitted with wireless; the lead unit happens to ship a longer-ranged set.

Lagunillas, TB-76, laid down 1909
Lorica, TB-77, laid down 1909
Labranzagrande, TB-78, laid down 1909
Linstead, TB-82, laid down 1909
Lionel Town, TB-83, laid down 1909
Lucea, TB-84, laid down 1909



Lagunillas, laid down 1909

Displacement:
   737 t light; 762 t standard; 841 t normal; 904 t full load

Dimensions: Length overall / water x beam x draught
   276.62 ft / 275.59 ft x 26.25 ft x 10.17 ft (normal load)
   84.31 m / 84.00 m x 8.00 m  x 3.10 m

Armament:
      3 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1909 Model
     Breech loading guns in deck mounts with hoists
     on centreline ends, majority aft
      2 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1909 Model
     Quick firing guns in deck mounts with hoists
     on side, all amidships
      2 - 0.31" / 8.0 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1909 Model
     Machine guns in deck mounts
     on side, evenly spread, all raised mounts
   Weight of broadside 68 lbs / 31 kg
   Shells per gun, main battery: 200
   4 - 18.0" / 457 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.98" / 25 mm         -         0.98" / 25 mm
   2nd:   0.98" / 25 mm         -         0.98" / 25 mm

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 18,000 shp / 13,428 Kw = 29.73 kts
   Range 2,800nm at 10.00 kts (Bunkerage = 142 tons)

Complement:
   77 - 101

Cost:
   £0.097 million / $0.387 million

Distribution of weights at normal displacement:
   Armament: 8 tons, 1.0 %
   Armour: 8 tons, 0.9 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 8 tons, 0.9 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 457 tons, 54.3 %
   Hull, fittings & equipment: 243 tons, 28.9 %
   Fuel, ammunition & stores: 104 tons, 12.4 %
   Miscellaneous weights: 21 tons, 2.5 %
     -10/5 t:  Wireless (lead unit/other units)
     -6 t:  Torpedoes
     -5 t/10 t:  Weight reserve (lead unit/other units)

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     213 lbs / 97 Kg = 15.8 x 3.0 " / 76 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.24
   Metacentric height 1.0 ft / 0.3 m
   Roll period: 11.1 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0.27
   Seaboat quality  (Average = 1.00): 1.04

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.400
   Length to Beam Ratio: 10.50 : 1
   'Natural speed' for length: 16.60 kts
   Power going to wave formation at top speed: 66 %
   Trim (Max stability = 0, Max steadiness = 100): 68
   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:      11.81 ft / 3.60 m
      - Forecastle (20 %):   11.81 ft / 3.60 m
      - Mid (50 %):      11.81 ft / 3.60 m (11.48 ft / 3.50 m aft of break)
      - Quarterdeck (15 %):   11.48 ft / 3.50 m
      - Stern:      11.48 ft / 3.50 m
      - Average freeboard:   11.65 ft / 3.55 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 186.0 %
      - Above water (accommodation/working, high = better): 92.3 %
   Waterplane Area: 4,453 Square feet or 414 Square metres
   Displacement factor (Displacement / loading): 45 %
   Structure weight / hull surface area: 26 lbs/sq ft or 128 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.99
      - Overall: 0.57
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform

[The Rock Doctor]

Kuracki Class

Small torpedo craft intended for riverine operations.

Kuracki, TB-79, laid down 1909
Kurupukari, TB-80, laid down 1909
Kamarang, TB-81, laid down 1909
Kuyuwini, TB-85, laid down 1909
Kourou, TB-86, laid down 1909
Kaw, TB-87, laid down 1909



Kuracki, laid down 1909

Displacement:
   236 t light; 242 t standard; 256 t normal; 268 t full load

Dimensions: Length overall / water x beam x draught
   214.82 ft / 213.25 ft x 20.34 ft x 4.92 ft (normal load)
   65.48 m / 65.00 m x 6.20 m  x 1.50 m

Armament:
      1 - 2.56" / 65.0 mm guns in single mounts, 8.38lbs / 3.80kg shells, 1909 Model
     Breech loading gun in a deck mount with hoist
     on centreline forward
      2 - 1.85" / 47.0 mm guns in single mounts, 3.17lbs / 1.44kg shells, 1909 Model
     Breech loading guns in deck mounts
     on side, all amidships
      2 - 0.31" / 8.0 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1909 Model
     Machine guns in deck mounts
     on side, evenly spread
   Weight of broadside 15 lbs / 7 kg
   Shells per gun, main battery: 100
   4 - 16.0" / 406 mm above water torpedoes (two fixed forward on the bow, one twin carriage aft)

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

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 5,200 shp / 3,879 Kw = 25.53 kts
   Range 1,000nm at 10.00 kts (Bunkerage = 26 tons)

Complement:
   31 - 41

Cost:
   £0.028 million / $0.114 million

Distribution of weights at normal displacement:
   Armament: 2 tons, 0.7 %
   Armour: 1 tons, 0.5 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 1 tons, 0.5 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 133 tons, 52.1 %
   Hull, fittings & equipment: 89 tons, 34.8 %
   Fuel, ammunition & stores: 21 tons, 8.0 %
   Miscellaneous weights: 10 tons, 3.9 %
   -2 t:  torpedos
   -5 t:  wireless
   -3 t:  weight reserve

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     92 lbs / 42 Kg = 10.9 x 2.6 " / 65 mm shells or 0.1 torpedoes
   Stability (Unstable if below 1.00): 1.19
   Metacentric height 0.6 ft / 0.2 m
   Roll period: 10.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.13
   Seaboat quality  (Average = 1.00): 1.00

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.420
   Length to Beam Ratio: 10.48 : 1
   'Natural speed' for length: 14.60 kts
   Power going to wave formation at top speed: 64 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   Bow angle (Positive = bow angles forward): 10.00 degrees
   Stern overhang: -3.28 ft / -1.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      8.86 ft / 2.70 m
      - Forecastle (20 %):   8.86 ft / 2.70 m
      - Mid (50 %):      8.86 ft / 2.70 m
      - Quarterdeck (15 %):   8.86 ft / 2.70 m
      - Stern:      8.86 ft / 2.70 m
      - Average freeboard:   8.86 ft / 2.70 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 177.8 %
      - Above water (accommodation/working, high = better): 93.0 %
   Waterplane Area: 2,704 Square feet or 251 Square metres
   Displacement factor (Displacement / loading): 47 %
   Structure weight / hull surface area: 18 lbs/sq ft or 87 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.72
      - Overall: 0.56
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform

[The Rock Doctor]

Monte Patria Class

The precise circumstances leading to the construction of this quartet of vessels by the CSA for Gran Colombia are unclear.  What is known is that the Assistant Naval Attache at the Colombian embassy in Richmond received an unexpected promotion within days of the contract signing, and found himself with a swank new torpedo-boat command in the Pacific.

As the Kuracki class torpedo-boats are already on the way for riverine operations, the destination of the boats is not yet certain.  Speculation is that they will deploy to Coquimbo, with three boats used operationally and the fourth as a training vessel for local recruits.

The class is likely to be re-armed with 76.2 and 47 mm guns and 457 mm torpedoes upon receipt in the latter half of 1909.  A re-sim will be posted at that time.

Credit for the drawing and design go to Carthaginian, and no, that's not the GC naval jack in the illustration.

Monte Patria, TB-88, laid down 1909
Maipu, TB-89, laid down 1909
Melipilla, TB-90, laid down 1909
Molina, TB-91, laid down 1909

Displacement:
  250 t light; 263 t standard; 295 t normal; 321 t full load

Dimensions: Length overall / water x beam x draught
  215.00 ft / 215.00 ft x 18.00 ft x 6.00 ft (normal load)
  65.53 m / 65.53 m x 5.49 m  x 1.83 m

Armament:
     2 - 3.50" / 88.9 mm guns in single mounts, 25.00lbs / 11.34kg shells, 1909 Model
    Quick firing guns in deck mounts
    on centreline ends, evenly spread
     4 - 1.00" / 25.4 mm guns in single mounts, 0.50lbs / 0.23kg shells, 1909 Model
    Machine guns in deck mounts
    on side, all amidships
  Weight of broadside 52 lbs / 24 kg
  Shells per gun, main battery: 250
  2 - 20.0" / 508 mm above water torpedoes

Armour:
  - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
  Main:   0.50" / 13 mm         -               -

Machinery:
  Coal fired boilers, steam turbines,
  Direct drive, 2 shafts, 8,000 shp / 5,968 Kw = 27.75 kts
  Range 1,900nm at 10.39 kts
  Bunker at max displacement = 58 tons (100% coal)
    Caution: Delicate, lightweight machinery

Complement:
  35 - 46

Cost:
  £0.036 million / $0.142 million

Distribution of weights at normal displacement:
  Armament: 6 tons, 1.9 %
  Armour: 2 tons, 0.6 %
     - Belts: 0 tons, 0.0 %
     - Torpedo bulkhead: 0 tons, 0.0 %
     - Armament: 2 tons, 0.6 %
     - Armour Deck: 0 tons, 0.0 %
     - Conning Tower: 0 tons, 0.0 %
  Machinery: 158 tons, 53.4 %
  Hull, fittings & equipment: 81 tons, 27.6 %
  Fuel, ammunition & stores: 45 tons, 15.4 %
  Miscellaneous weights: 3 tons, 1.0 %

Overall survivability and seakeeping ability:
  Survivability (Non-critical penetrating hits needed to sink ship):
    73 lbs / 33 Kg = 3.4 x 3.5 " / 89 mm shells or 0.1 torpedoes
  Stability (Unstable if below 1.00): 1.38
  Metacentric height 0.7 ft / 0.2 m
  Roll period: 9.2 seconds
  Steadiness   - As gun platform (Average = 50 %): 50 %
        - Recoil effect (Restricted arc if above 1.00): 0.23
  Seaboat quality  (Average = 1.00): 0.73

Hull form characteristics:
  Hull has a flush deck
  Block coefficient: 0.445
  Length to Beam Ratio: 11.94 : 1
  'Natural speed' for length: 14.66 kts
  Power going to wave formation at top speed: 68 %
  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:      6.00 ft / 1.83 m
     - Forecastle (20 %):   9.00 ft / 2.74 m
     - Mid (50 %):      7.00 ft / 2.13 m
     - Quarterdeck (15 %):   7.00 ft / 2.13 m
     - Stern:      7.00 ft / 2.13 m
     - Average freeboard:   7.46 ft / 2.27 m
  Ship tends to be wet forward

Ship space, strength and comments:
  Space   - Hull below water (magazines/engines, low = better): 189.4 %
     - Above water (accommodation/working, high = better): 67.6 %
  Waterplane Area: 2,458 Square feet or 228 Square metres
  Displacement factor (Displacement / loading): 35 %
  Structure weight / hull surface area: 18 lbs/sq ft or 86 Kg/sq metre
  Hull strength (Relative):
     - Cross-sectional: 0.50
     - Longitudinal: 1.18
     - Overall: 0.54
  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