Torpederos

[The Rock Doctor]

Natagaima Class



Natagaima, TB-92, laid down 1910
Nuevo Amsterdam, TB-93, laid down 1910
Negril, TB-94, laid down 1910
Nunchia, TB-97, laid down 1910
Nuevo Rocafuerte, TB-98, laid down 1910
Nuevo Chagres, TB-99, laid down 1910
Patia, TB-102, laid down 1911
Periera, TB-103, laid down 1911
Porlamar, TB-104, laid down 1911


N-Class Torpedo-boat, laid down 1909

Displacement:
   750 t light; 776 t standard; 861 t normal; 930 t full load

Dimensions: Length overall / water x beam x draught
   280.48 ft / 278.87 ft x 26.57 ft x 10.17 ft (normal load)
   85.49 m / 85.00 m x 8.10 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, 1 raised mount 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 = 29.67 kts
   Range 3,000nm at 10.00 kts (Bunkerage = 154 tons)

Complement:
   79 - 103

Cost:
   £0.099 million / $0.395 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: 466 tons, 54.1 %
   Hull, fittings & equipment: 242 tons, 28.0 %
   Fuel, ammunition & stores: 111 tons, 12.9 %
   Miscellaneous weights: 26 tons, 3.0 %
     -10/5 t:  Wireless (lead unit/other units)
     -6 t:  Torpedoes
     -10/15 t:  Weight reserve (lead unit/other units)

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     208 lbs / 95 Kg = 15.4 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 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.25
   Seaboat quality  (Average = 1.00): 1.04

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.400
   Length to Beam Ratio: 10.49 : 1
   'Natural speed' for length: 16.70 kts
   Power going to wave formation at top speed: 66 %
   Trim (Max stability = 0, Max steadiness = 100): 67
   Bow angle (Positive = bow angles forward): 5.00 degrees
   Stern overhang: -1.64 ft / -0.50 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      18.37 ft / 5.60 m
      - Forecastle (20 %):   15.75 ft / 4.80 m
      - Mid (45 %):      15.75 ft / 4.80 m (7.87 ft / 2.40 m aft of break)
      - Quarterdeck (15 %):   7.87 ft / 2.40 m
      - Stern:      7.87 ft / 2.40 m
      - Average freeboard:   11.63 ft / 3.54 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 185.8 %
      - Above water (accommodation/working, high = better): 87.2 %
   Waterplane Area: 4,562 Square feet or 424 Square metres
   Displacement factor (Displacement / loading): 46 %
   Structure weight / hull surface area: 26 lbs/sq ft or 127 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.84
      - Overall: 0.57
   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]

Ovejas Class

These dispatch boats have been moved to "Auxiliaries - Services"

[The Rock Doctor]

Quito Class

This is the first thousand tonne torpedo-boat design for Gran Colombia.  Its seakeeping is certainly not great, but the other features are satisfactory.

Of note, the class will be the first to mount depth charges, a dozen being reckoned as more than enough to sink a submarine.  However, you won't see them in the drawing.



TB-105, Quito, laid down 1912
TB-106, Quibdo, laid down 1912
TB-107, Riohacha, laid down 1912
TB-108, Regina, laid down 1913
TB-109, Roseau, laid down 1913
TB-110, Restrepo, laid down 1913


Enter ship name, Enter country Enter ship type laid down 1909 (Engine 1912)

Displacement:
   1,000 t light; 1,038 t standard; 1,189 t normal; 1,309 t full load

Dimensions: Length overall / water x beam x draught
   332.30 ft / 328.08 ft x 31.17 ft x 10.17 ft (normal load)
   101.29 m / 100.00 m x 9.50 m  x 3.10 m

Armament:
      3 - 3.94" / 100 mm guns in single mounts, 30.51lbs / 13.84kg shells, 1909 Model
     Breech loading guns in deck mounts with hoists
     on centreline ends, majority aft, 2 raised mounts - superfiring
      1 - 2.56" / 65.0 mm guns in single mounts, 8.38lbs / 3.80kg shells, 1909 Model
     Breech loading anti-airship gun in deck mount
     on centreline aft, 1 raised gun
      2 - 0.31" / 8.0 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1909 Model
     Breech loading guns in deck mounts
     on side, evenly spread
   Weight of broadside 100 lbs / 45 kg
   Shells per gun, main battery: 250
   6 - 21.0" / 533 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         -               -
   3rd:   0.39" / 10 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 24,000 shp / 17,904 Kw = 30.92 kts
   Range 6,800nm at 10.00 kts (Bunkerage = 271 tons)

Complement:
   100 - 131

Cost:
   £0.134 million / $0.535 million

Distribution of weights at normal displacement:
   Armament: 12 tons, 1.1 %
   Armour: 8 tons, 0.7 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 8 tons, 0.7 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 630 tons, 53.0 %
   Hull, fittings & equipment: 315 tons, 26.5 %
   Fuel, ammunition & stores: 189 tons, 15.9 %
   Miscellaneous weights: 34 tons, 2.9 %
-14 t:  Weight reserve
-10 t:  Wireless
-6 t:  Torpedos
-4 t:  2x6 250 kg depth charges on rails aft

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     319 lbs / 145 Kg = 10.5 x 3.9 " / 100 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.49
   Metacentric height 1.7 ft / 0.5 m
   Roll period: 10.0 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.17
   Seaboat quality  (Average = 1.00): 0.93

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.400
   Length to Beam Ratio: 10.53 : 1
   'Natural speed' for length: 18.11 kts
   Power going to wave formation at top speed: 64 %
   Trim (Max stability = 0, Max steadiness = 100): 54
   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:      15.75 ft / 4.80 m
      - Forecastle (20 %):   15.75 ft / 4.80 m
      - Mid (50 %):      15.75 ft / 4.80 m (7.87 ft / 2.40 m aft of break)
      - Quarterdeck (15 %):   7.87 ft / 2.40 m
      - Stern:      7.87 ft / 2.40 m
      - Average freeboard:   11.81 ft / 3.60 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 182.8 %
      - Above water (accommodation/working, high = better): 82.3 %
   Waterplane Area: 6,295 Square feet or 585 Square metres
   Displacement factor (Displacement / loading): 58 %
   Structure weight / hull surface area: 28 lbs/sq ft or 139 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 1.08
      - 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

[The Rock Doctor]

Santa Isabel Class

The S-Class torpedo-boats are improvements to the Q/R class boats built in late 1912 and earlier in the present year.

The hull is longer, and the stern more rounded, making it easier to roll ordnance off the end of the ship.  This is no small concern since the class is fitted not only with depth charges but also a modest mine-laying capability.

The increased length also allows for increased bunkerage, while retaining the same speed on the same powerplant. 

Above-decks, an increase in deck space and a deletion of the hoists used in for the previous class' main battery (belatedly deemed unnecessary for the size of gun) allows a fourth gun to be fitted, in the place of the anti-airship gun.  This, in turn, has been relocated to a position between the second and third funnels, on an elevated platform. 

Other features include simplification of the midships deck break, elevation of the first pair of boats to the forecastle, and movement of the second pair of boats slightly inboard - the latter two measures being taken to protect the boats from waves.  Fire control and a short-range wireless are built into the ship.

Barring abrupt changes to shipbuilding philosophy, it is expected that this will be a standard model for GC TB construction until the next generation of turbines is available.

(Yes, the sim says laid down 1909.  It changes nothing; ignore it)



TB-111, Santa Isabel, laid down 1913
TB-112, Sona, laid down 1913
TB-113, San Carlos, laid down 1913
TB-114, Sinnamary, laid down 1914
TB-115, Suarez, laid down 1914
TB-116, Saldana, laid down 1914
TB-117, Santa Cruz, laid down 1914
TB-118, San Bernardo, laid down 1914
TB-119, San Sylvestre, laid down 1914
TB-120, Sainte-Anne, laid down 1915
TB-121, Salinas, laid down 1915
TB-122, Santa Maria, laid down 1915
TB-123, Sauriwaunawa, laid down 1915
TB-124, Samaca, laid down 1915
TB-125, Sogamoso, laid down 1915
TB-126, Samariapo, laid down 1916
TB-127, Sardinata, laid down 1916
TB-128, Sincelejo, laid down 1916

Enter ship name, Enter country Enter ship type laid down 1909 (Engine 1912)

Displacement:
   1,000 t light; 1,039 t standard; 1,218 t normal; 1,362 t full load

Dimensions: Length overall / water x beam x draught
   341.03 ft / 336.29 ft x 31.17 ft x 10.17 ft (normal load)
   103.95 m / 102.50 m x 9.50 m  x 3.10 m

Armament:
      4 - 3.94" / 100 mm guns in single mounts, 30.51lbs / 13.84kg shells, 1909 Model
     Breech loading guns in deck mounts
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      1 - 2.56" / 65.0 mm guns in single mounts, 8.38lbs / 3.80kg shells, 1909 Model
     Breech loading anti-airship gun in deck mount
     on centreline amidships, 1 raised gun
      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 130 lbs / 59 kg
   Shells per gun, main battery: 200
   6 - 21.0" / 533 mm above water torpedoes

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

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 24,000 shp / 17,904 Kw = 30.93 kts
   Range 8,000nm at 10.00 kts (Bunkerage = 323 tons)

Complement:
   103 - 134

Cost:
   £0.137 million / $0.549 million

Distribution of weights at normal displacement:
   Armament: 16 tons, 1.3 %
   Armour: 10 tons, 0.8 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 10 tons, 0.8 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 633 tons, 51.9 %
   Hull, fittings & equipment: 289 tons, 23.7 %
   Fuel, ammunition & stores: 219 tons, 18.0 %
   Miscellaneous weights: 52 tons, 4.3 %
-25 t:  Fire Control
-6 t:  Torpedoes
-4 t:   12 Depth Charges on dual rails aft
-16 t:  16 Mines
-1 t:  Weight Reserve

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     284 lbs / 129 Kg = 9.3 x 3.9 " / 100 mm shells or 0.2 torpedoes
   Stability (Unstable if below 1.00): 1.35
   Metacentric height 1.5 ft / 0.4 m
   Roll period: 10.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.13
   Seaboat quality  (Average = 1.00): 0.91

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.400
   Length to Beam Ratio: 10.79 : 1
   'Natural speed' for length: 18.34 kts
   Power going to wave formation at top speed: 63 %
   Trim (Max stability = 0, Max steadiness = 100): 77
   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:      17.72 ft / 5.40 m
      - Forecastle (20 %):   15.75 ft / 4.80 m
      - Mid (40 %):      15.75 ft / 4.80 m (7.87 ft / 2.40 m aft of break)
      - Quarterdeck (15 %):   7.87 ft / 2.40 m
      - Stern:      7.87 ft / 2.40 m
      - Average freeboard:   11.18 ft / 3.41 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 182.8 %
      - Above water (accommodation/working, high = better): 74.5 %
   Waterplane Area: 6,452 Square feet or 599 Square metres
   Displacement factor (Displacement / loading): 58 %
   Structure weight / hull surface area: 26 lbs/sq ft or 129 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 0.87
      - Overall: 0.52
   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
   Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

[The Rock Doctor]

Tulua Class

The T-class torpedo-boats will, eventually, operate as a squadron.  For now, however, their intended purpose is to function as a leader of other, older torpedo-boats, in the place of the older protected cruisers that are due to be retired.  To this end, they have long-range wireless and limited flag facilities.  

Construction will be limited to one unit per half-year for the moment, as the big capital ships are sucking up the majority of the Armada's budget.



TB-129, Tulua, laid down 1916
TB-131, Tierralta, laid down 1916
TB-132, Toledo, laid down 1917
TB-133, Tamara, laid down 1917
TB-137, Tunapuna, laid down 1918
TB-147, Tello, laid down 1918

Enter ship name, Enter country Enter ship type laid down 1916

Displacement:
   1,482 t light; 1,541 t standard; 1,784 t normal; 1,979 t full load

Dimensions: Length overall / water x beam x draught
   389.07 ft / 385.83 ft x 33.79 ft x 11.98 ft (normal load)
   118.59 m / 117.60 m x 10.30 m  x 3.65 m

Armament:
     5 - 3.94" / 100 mm guns in single mounts, 30.51lbs / 13.84kg shells, 1916 Model
     Breech loading guns in deck mounts
     on centreline ends, majority aft, 3 raised mounts - superfiring
     1 - 2.56" / 65.0 mm guns in single mounts, 8.38lbs / 3.80kg shells, 1916 Model
     Breech loading gun in deck mount
     on centreline aft, 1 raised gun
     2 - 0.31" / 8.0 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1916 Model
     Breech loading guns in deck mounts
     on side, evenly spread
   Weight of broadside 161 lbs / 73 kg
   Shells per gun, main battery: 250
   6 - 21.0" / 533 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         -               -
   3rd:   0.39" / 10 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 34,000 shp / 25,364 Kw = 32.33 kts
   Range 10,000nm at 10.00 kts (Bunkerage = 439 tons)

Complement:
   136 - 178

Cost:
   £0.330 million / $1.319 million

Distribution of weights at normal displacement:
   Armament: 20 tons, 1.1 %
   Armour: 16 tons, 0.9 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 16 tons, 0.9 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 948 tons, 53.1 %
   Hull, fittings & equipment: 407 tons, 22.8 %
   Fuel, ammunition & stores: 302 tons, 16.9 %
   Miscellaneous weights: 91 tons, 5.1 %
   -25 t:  Long-Range Wireless
   -25 t:  Fire Control
   -15 t:  Flag facilities
   -12 t:  Torpedoes
   -10 t:  Weight Reserve
   -4 t:  12 Depth Charges

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     395 lbs / 179 Kg = 12.9 x 3.9 " / 100 mm shells or 0.3 torpedoes
   Stability (Unstable if below 1.00): 1.40
   Metacentric height 1.8 ft / 0.5 m
   Roll period: 10.7 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.12
   Seaboat quality  (Average = 1.00): 0.97

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.400
   Length to Beam Ratio: 11.42 : 1
   'Natural speed' for length: 19.64 kts
   Power going to wave formation at top speed: 61 %
   Trim (Max stability = 0, Max steadiness = 100): 72
   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:      18.37 ft / 5.60 m
      - Forecastle (20 %):   16.40 ft / 5.00 m
      - Mid (45 %):      16.40 ft / 5.00 m (8.53 ft / 2.60 m aft of break)
      - Quarterdeck (15 %):   8.53 ft / 2.60 m
      - Stern:      8.53 ft / 2.60 m
      - Average freeboard:   12.23 ft / 3.73 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 186.1 %
      - Above water (accommodation/working, high = better): 88.8 %
   Waterplane Area: 8,026 Square feet or 746 Square metres
   Displacement factor (Displacement / loading): 64 %
   Structure weight / hull surface area: 29 lbs/sq ft or 142 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 0.82
      - Overall: 0.52
   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
   Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

[The Rock Doctor]

Ustupo Class

The Colombians haven't built any coastal torpedo boats in several years; they've generally taken the view that old torpedo-boats can do the coastal defense job that smaller new ones can.

Geopolitical considerations are now causing the Colombians to reconsider their position.  Smaller, more effective boats might be more appropriate to certain environments.  Therefore, a single U-class boat will be constructed and used for trials and training, at least until such time as any additional orders might be made.



TB-130, Ustupa, laid down 1916

Displacement:
   396 t light; 409 t standard; 451 t normal; 485 t full load

Dimensions: Length overall / water x beam x draught
   229.44 ft / 226.38 ft x 19.69 ft x 8.86 ft (normal load)
   69.93 m / 69.00 m x 6.00 m  x 2.70 m

Armament:
      2 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1916 Model
     Breech loading guns in deck mounts
     on centreline ends, evenly spread
      2 - 0.31" / 8.0 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1916 Model
     Breech loading guns in deck mounts
     on side, all amidships, all raised mounts - superfiring
   Weight of broadside 27 lbs / 12 kg
   Shells per gun, main battery: 250
   3 - 21.0" / 533 mm above water torpedoes

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

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 14,000 shp / 10,444 Kw = 30.02 kts
   Range 4,000nm at 10.00 kts (Bunkerage = 76 tons)

Complement:
   48 - 63

Cost:
   £0.083 million / $0.330 million

Distribution of weights at normal displacement:
   Armament: 3 tons, 0.7 %
   Armour: 3 tons, 0.7 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 3 tons, 0.7 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 241 tons, 53.4 %
   Hull, fittings & equipment: 137 tons, 30.5 %
   Fuel, ammunition & stores: 55 tons, 12.2 %
   Miscellaneous weights: 11 tons, 2.4 %
-6 t:  Three big fish
-4 t:  12 depth charges
-1 t:  Weight reserve

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     115 lbs / 52 Kg = 8.6 x 3.0 " / 76 mm shells or 0.1 torpedoes
   Stability (Unstable if below 1.00): 1.23
   Metacentric height 0.6 ft / 0.2 m
   Roll period: 10.4 seconds
   Steadiness   - As gun platform (Average = 50 %): 50 %
         - Recoil effect (Restricted arc if above 1.00): 0.11
   Seaboat quality  (Average = 1.00): 0.94

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.400
   Length to Beam Ratio: 11.50 : 1
   'Natural speed' for length: 15.05 kts
   Power going to wave formation at top speed: 69 %
   Trim (Max stability = 0, Max steadiness = 100): 53
   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:      17.39 ft / 5.30 m
      - Forecastle (20 %):   14.44 ft / 4.40 m
      - Mid (40 %):      14.44 ft / 4.40 m (6.56 ft / 2.00 m aft of break)
      - Quarterdeck (15 %):   6.56 ft / 2.00 m
      - Stern:      6.56 ft / 2.00 m
      - Average freeboard:   9.95 ft / 3.03 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 181.3 %
      - Above water (accommodation/working, high = better): 52.5 %
   Waterplane Area: 2,743 Square feet or 255 Square metres
   Displacement factor (Displacement / loading): 42 %
   Structure weight / hull surface area: 21 lbs/sq ft or 102 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 2.89
      - 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

[The Rock Doctor]

Velez Class

An improvement on the S-class boats, intended primarily to screen the Armada's armored cruisers.

TB-134, Velez, laid down 1917
TB-135, Volcan, laid down 1917
TB-136, Valera, laid down 1917
TB-138, Vielle Case, laid down 1918
TB-139, Villavicencio, laid down 1918
TB-140, Valledupar, laid down 1918
TB-141, Yopal, laid down 1918
TB-142, Yumare, laid down 1918
TB-143, Yaguachi, laid down 1918
TB-144, Yarumal, laid down 1918
TB-145, Yaritagua, laid down 1918
TB-146, Yahuma, laid down 1918
TB-148, Ziraquira, laid down 1919
TB-149, Zarzal, laid down 1919
TB-150, Zambrano, laid down 1919
TB-151, Zaragosa, laid down 1919
TB-152, Zaruma, laid down 1919
TB-153, Zuata, laid down 1919

Enter ship name, Enter country Enter ship type laid down 1909 (Engine 1916)

Displacement:
   1,217 t light; 1,264 t standard; 1,456 t normal; 1,610 t full load

Dimensions: Length overall / water x beam x draught
   365.90 ft / 360.89 ft x 32.81 ft x 10.50 ft (normal load)
   111.53 m / 110.00 m x 10.00 m  x 3.20 m

Armament:
     4 - 3.94" / 100 mm guns in single mounts, 30.51lbs / 13.84kg shells, 1909 Model
     Breech loading guns in deck mounts
     on centreline ends, evenly spread, 2 raised mounts - superfiring
     2 - 1.46" / 37.0 mm guns in single mounts, 1.55lbs / 0.70kg shells, 1909 Model
     Breech loading guns in deck mounts
     on centreline, all amidships, all raised mounts - superfiring
     2 - 0.31" / 8.0 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1909 Model
     Breech loading guns in deck mounts
     on side, evenly spread
   Weight of broadside 125 lbs / 57 kg
   Shells per gun, main battery: 250
   6 - 21.0" / 533 mm above water torpedoes

Armour:
  - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.98" / 25 mm         -               -
   2nd:   0.39" / 10 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 30,000 shp / 22,380 Kw = 32.01 kts
   Range 9,000nm at 10.00 kts (Bunkerage = 346 tons)

Complement:
   117 - 153

Cost:
   £0.164 million / $0.658 million

Distribution of weights at normal displacement:
   Armament: 16 tons, 1.1 %
   Armour: 9 tons, 0.6 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 9 tons, 0.6 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 777 tons, 53.3 %
   Hull, fittings & equipment: 351 tons, 24.1 %
   Fuel, ammunition & stores: 239 tons, 16.4 %
   Miscellaneous weights: 65 tons, 4.5 %
-25 t:  Fire Control
-16 t:  16 Mines
-12 t:  Torpedoes
-6 t:  Weight reserve
-6 t:   18 Depth Charges on dual rails aft

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     341 lbs / 155 Kg = 11.2 x 3.9 " / 100 mm shells or 0.3 torpedoes
   Stability (Unstable if below 1.00): 1.36
   Metacentric height 1.6 ft / 0.5 m
   Roll period: 10.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.11
   Seaboat quality  (Average = 1.00): 0.90

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.410
   Length to Beam Ratio: 11.00 : 1
   'Natural speed' for length: 19.00 kts
   Power going to wave formation at top speed: 63 %
   Trim (Max stability = 0, Max steadiness = 100): 78
   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:      18.70 ft / 5.70 m
      - Forecastle (20 %):   15.75 ft / 4.80 m
      - Mid (47 %):      15.75 ft / 4.80 m (7.87 ft / 2.40 m aft of break)
      - Quarterdeck (15 %):   7.87 ft / 2.40 m
      - Stern:      7.87 ft / 2.40 m
      - Average freeboard:   11.81 ft / 3.60 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 185.7 %
      - Above water (accommodation/working, high = better): 86.7 %
   Waterplane Area: 7,333 Square feet or 681 Square metres
   Displacement factor (Displacement / loading): 60 %
   Structure weight / hull surface area: 28 lbs/sq ft or 138 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.51
      - Longitudinal: 0.84
      - Overall: 0.53
   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
   Poor seaboat, wet and uncomfortable, reduced performance in heavy weather