WesWorld

Split off from the Auxiliaries thread.

Ships and Equipment:
Parinacota-class Attack Transports
- Parinacota (TDT-1) - 1916/1936
- Copahue (TDT-2) - 1916/1936
- Tronador (TDT-3) - 1916/1936
- Lascar (TDT-4) - 1916/1936

Pisagua-class Dock Landing Ship
- Disembarkment of Pisagua

Valdivia-class Vehicle Landing Ship
- Valdivia (LSV-01)

Pisco-class Beach Discharge Lighter
- Pisco (BDL-01)

Rancagua-class Tank Landing Ship
- Rancagua (LST-01) - 1940
- Chacabuco (LST-02) - 1941

Almirante José Toribio Merino Saavedra-class Infantry Landing Ship
- Almirante José Toribio Merino Saavedra (MOA-01) - 1940

Elicura class Mechanized Landing Ship
- Elicura (LSM-01) - 1942
- Orompello (LSM-02) - 1943

Almirante José Toribio Merino Saavedra-class Infantry Landing Ship
- Almirante José Toribio Merino Saavedra (MOA-01) - 1940
- Ministro Zentento (MOA-02) - 1941
- Presidente Errazuriz (MOA-03) - 1941

Summary:
The Chilean amphibious assault doctrine stems from a long history of naval landings stemming back to the wars for independence. Prior to 1937, it was believed specialized equipment was unnecessary except during wartime; however, the experience of trying to manage coastal raids against defended targets indicated the necessity of acquiring ships and equipment prior to the start of a conflict. Despite the lack of equipment the Chilean Navy and Marines managed to launch a major raid on the Peruvian port of Pisco, and was in the planning stages for a major descent on Mollendo when the Peruvian Civil War ended.

General doctrine now calls for the capability to land one to two Marine battalions, with associated gear and vehicles, with further troops to be transported by hired civilian transports.

Image by thesmilingassassin and modified by me (Brockpaine)

Parinacota-class, Atlantean-built Chilean Attack Transport laid down 1916 (Engine 1936)

Displacement:
1,170 t light; 1,209 t standard; 1,283 t normal; 1,343 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:
2 - 4.33" / 110 mm guns (1x2 guns), 40.61lbs / 18.42kg shells, 1936 Model
Dual purpose guns in deck mount
on centreline forward
4 - 1.57" / 40.0 mm guns (2x2 guns), 1.95lbs / 0.88kg shells, 1936 Model
Anti-aircraft guns in deck mounts
on side, all amidships
4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1916 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 89 lbs / 40 kg
Shells per gun, main battery: 250

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 20,647 shp / 15,403 Kw = 29.00 kts
Range 5,000nm at 10.00 kts
Bunker at max displacement = 134 tons

Complement:
106 - 139

Cost:
£0.195 million / $0.780 million

Distribution of weights at normal displacement:
Armament: 11 tons, 0.9 %
Machinery: 492 tons, 38.4 %
Hull, fittings & equipment: 317 tons, 24.7 %
Fuel, ammunition & stores: 113 tons, 8.8 %
Miscellaneous weights: 350 tons, 27.3 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
389 lbs / 176 Kg = 9.6 x 4.3 " / 110 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 1.0 ft / 0.3 m
Roll period: 12.6 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.10
Seaboat quality (Average = 1.00): 1.21

Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.460
Length to Beam Ratio: 10.33 : 1
'Natural speed' for length: 17.61 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 42
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 %): 20.00 ft / 6.10 m (12.00 ft / 3.66 m aft of break)
- Mid (40 %): 12.00 ft / 3.66 m
- Quarterdeck (15 %): 12.00 ft / 3.66 m
- Stern: 12.00 ft / 3.66 m
- Average freeboard: 13.60 ft / 4.15 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 160.6 %
- Above water (accommodation/working, high = better): 129.0 %
Waterplane Area: 5,982 Square feet or 556 Square metres
Displacement factor (Displacement / loading): 80 %
Structure weight / hull surface area: 26 lbs/sq ft or 127 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.83
- Overall: 0.57
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily

Breakdown of Miscellaneous Weights:
50 tons for raiding boats
300 tons for Marines and equipment

Ships in Class:
- Parinacota (TDT-1)
- Copahue (TDT-2)
- Tronador (TDT-3)
- Lascar (TDT-4)

Named after volcanoes.

Valdivia, Chilean LSV laid down 1940

Displacement:
12,495 t light; 12,929 t standard; 18,000 t normal; 22,057 t full load

Dimensions: Length overall / water x beam x draught
511.52 ft / 492.13 ft x 78.74 ft x 26.90 ft (normal load)
155.91 m / 150.00 m x 24.00 m x 8.20 m

Armament:
8 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1940 Model
Dual purpose guns in deck mounts
on side, evenly spread
8 - 1.57" / 40.0 mm guns (4x2 guns), 1.95lbs / 0.88kg shells, 1940 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 124 lbs / 56 kg
Shells per gun, main battery: 1,000

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.79" / 20 mm 0.39" / 10 mm -
2nd: 0.39" / 10 mm - -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 23,330 shp / 17,404 Kw = 21.00 kts
Range 14,500nm at 21.00 kts
Bunker at max displacement = 9,128 tons

Complement:
776 - 1,010

Cost:
£3.226 million / $12.903 million

Distribution of weights at normal displacement:
Armament: 15 tons, 0.1 %
Armour: 10 tons, 0.1 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 10 tons, 0.1 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 624 tons, 3.5 %
Hull, fittings & equipment: 3,996 tons, 22.2 %
Fuel, ammunition & stores: 5,505 tons, 30.6 %
Miscellaneous weights: 7,850 tons, 43.6 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
28,623 lbs / 12,983 Kg = 2,120.2 x 3.0 " / 76 mm shells or 3.6 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 4.2 ft / 1.3 m
Roll period: 16.1 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.01
Seaboat quality (Average = 1.00): 1.70

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.604
Length to Beam Ratio: 6.25 : 1
'Natural speed' for length: 26.02 kts
Power going to wave formation at top speed: 49 %
Trim (Max stability = 0, Max steadiness = 100): 30
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 9.84 ft / 3.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26.25 ft / 8.00 m
- Forecastle (20 %): 21.33 ft / 6.50 m
- Mid (50 %): 16.40 ft / 5.00 m
- Quarterdeck (15 %): 17.22 ft / 5.25 m
- Stern: 18.04 ft / 5.50 m
- Average freeboard: 18.85 ft / 5.75 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 60.6 %
- Above water (accommodation/working, high = better): 129.3 %
Waterplane Area: 29,660 Square feet or 2,755 Square metres
Displacement factor (Displacement / loading): 195 %
Structure weight / hull surface area: 95 lbs/sq ft or 464 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.63
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Breakdown of Miscellaneous Weights:
- 100 tons for stern Ramp
- 600 tons for six large cranes (100t each)
- 120 tons for four small cranes (30t each)
- 546 tons for 42x Tortuga amphibious carriers (13t each)
- 52 tons for 4x Tortuga amphitanks (13t each)
- 112 tons for 32x medium trucks (3.5t each)
- 2,436 tons for 1218 men (1 MDIM + 1 DIM)
- 134 tons for dradis and electronic gear
- 150 tons for C3I Facilities and Equipment
- 210 tons for 6x LCM-35s (35t each)
- 75 tons for 6x LCA-12s (12.5t each)
- 200 tons for vehicle workshop
- 100 tons for vehicle fuel
- 100 tons for vehicle ammo supply
- 1,800 tons for troop supplies
- 1115 tons for other gear
7,850 tons total

Ships in Class:
- Valdivia (LSV-01) - 1940

Notes:
- 5,020 tons of bunker fuel simmed as deep cargo. Range is actually 15,000nm at 15.00 kts; Bunker at max displacement = 4,108 tons.

Disembarkment of Pisco, Chilean Beach Discharge Lighter laid down 1940

Displacement:
1,923 t light; 1,970 t standard; 2,125 t normal; 2,248 t full load

Dimensions: Length overall / water x beam x draught
355.55 ft / 338.00 ft x 50.00 ft x 8.00 ft (normal load)
108.37 m / 103.02 m x 15.24 m x 2.44 m

Armament:
4 - 1.57" / 40.0 mm guns in single mounts, 1.95lbs / 0.89kg shells, 1940 Model
Anti-aircraft guns in deck mounts
on centreline ends, evenly spread
Weight of broadside 8 lbs / 4 kg
Shells per gun, main battery: 1,000

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 1,116 shp / 832 Kw = 12.00 kts
Range 5,000nm at 12.00 kts
Bunker at max displacement = 278 tons

Complement:
156 - 203

Cost:
£0.434 million / $1.736 million

Distribution of weights at normal displacement:
Armament: 1 tons, 0.0 %
Machinery: 30 tons, 1.4 %
Hull, fittings & equipment: 803 tons, 37.8 %
Fuel, ammunition & stores: 201 tons, 9.5 %
Miscellaneous weights: 1,090 tons, 51.3 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
5,335 lbs / 2,420 Kg = 2,732.1 x 1.6 " / 40 mm shells or 1.8 torpedoes
Stability (Unstable if below 1.00): 1.14
Metacentric height 2.3 ft / 0.7 m
Roll period: 14.0 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 1.50

Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.550
Length to Beam Ratio: 6.76 : 1
'Natural speed' for length: 18.38 kts
Power going to wave formation at top speed: 23 %
Trim (Max stability = 0, Max steadiness = 100): 47
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 6.00 ft / 1.83 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 20.00 ft / 6.10 m
- Forecastle (20 %): 20.00 ft / 6.10 m (12.00 ft / 3.66 m aft of break)
- Mid (50 %): 12.00 ft / 3.66 m
- Quarterdeck (15 %): 12.00 ft / 3.66 m
- Stern: 12.00 ft / 3.66 m
- Average freeboard: 13.60 ft / 4.15 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 61.7 %
- Above water (accommodation/working, high = better): 172.8 %
Waterplane Area: 11,794 Square feet or 1,096 Square metres
Displacement factor (Displacement / loading): 184 %
Structure weight / hull surface area: 52 lbs/sq ft or 252 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.31
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

Specifications also listed HERE as Submarine Support Vessel.

Almirante José Toribio Merino Saavedra-class, Chilean Multipurpose Auxiliary laid down 1940
These three vessels are designed as "multi-purpose" support ships, and can be quickly converted to serve as submarine motherships, minelayers, infantry landing ships, seaplane tenders, or other various roles. This depends almost completely on the general stores they carry, and the ships are visually identical. The lead vessel, Almirante José Toribio Merino Saavedra, will be assigned as a submarine mothership, while Ministro Zentento and Presidente Errazuriz will be assigned as infantry landing ships.

Displacement:
2,650 t light; 2,759 t standard; 3,500 t normal; 4,093 t full load

Dimensions: Length overall / water x beam x draught
352.25 ft / 344.49 ft x 48.23 ft x 13.12 ft (normal load)
107.37 m / 105.00 m x 14.70 m x 4.00 m

Armament:
4 - 4.33" / 110 mm guns in single mounts, 40.61lbs / 18.42kg shells, 1940 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread, 2 raised mounts - superfiring
4 - 1.57" / 40.0 mm guns (2x2 guns), 1.95lbs / 0.88kg shells, 1940 Model
Anti-aircraft guns in deck mounts
on centreline, all aft, all raised mounts - superfiring
6 - 0.79" / 20.0 mm guns (2x3 guns), 0.24lbs / 0.11kg shells, 1940 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 172 lbs / 78 kg
Shells per gun, main battery: 400

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.18" / 30 mm 0.79" / 20 mm 0.79" / 20 mm
2nd: 0.79" / 20 mm 0.39" / 10 mm -
3rd: 0.59" / 15 mm 0.39" / 10 mm -

- Conning tower: 1.18" / 30 mm

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 3,857 shp / 2,878 Kw = 16.00 kts
Range 11,500nm at 15.00 kts
Bunker at max displacement = 1,333 tons

Complement:
226 - 295

Cost:
£0.751 million / $3.005 million

Distribution of weights at normal displacement:
Armament: 21 tons, 0.6 %
Armour: 21 tons, 0.6 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 15 tons, 0.4 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 6 tons, 0.2 %
Machinery: 103 tons, 2.9 %
Hull, fittings & equipment: 1,104 tons, 31.5 %
Fuel, ammunition & stores: 850 tons, 24.3 %
Miscellaneous weights: 1,400 tons, 40.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
7,705 lbs / 3,495 Kg = 189.7 x 4.3 " / 110 mm shells or 2.0 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 2.0 ft / 0.6 m
Roll period: 14.2 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.11
Seaboat quality (Average = 1.00): 1.94

Hull form characteristics:
Hull has low forecastle, low quarterdeck
Block coefficient: 0.562
Length to Beam Ratio: 7.14 : 1
'Natural speed' for length: 18.56 kts
Power going to wave formation at top speed: 39 %
Trim (Max stability = 0, Max steadiness = 100): 36
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: 21.33 ft / 6.50 m
- Forecastle (20 %): 12.37 ft / 3.77 m (18.04 ft / 5.50 m aft of break)
- Mid (50 %): 14.76 ft / 4.50 m
- Quarterdeck (15 %): 8.20 ft / 2.50 m (14.76 ft / 4.50 m before break)
- Stern: 9.02 ft / 2.75 m
- Average freeboard: 14.57 ft / 4.44 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 59.5 %
- Above water (accommodation/working, high = better): 153.4 %
Waterplane Area: 11,724 Square feet or 1,089 Square metres
Displacement factor (Displacement / loading): 195 %
Structure weight / hull surface area: 64 lbs/sq ft or 311 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.71
- Overall: 1.01
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Breakdown of Miscellaneous Weights (as BDI):
- 75 tons for 6 Landing Craft Assault (12.5 tons each)
- 70 tons for 2 Landing Craft Mechanized (35 tons each)
- 876 tons for 438 troops
- 50 tons for working crane
- 329 tons for associated gear
(Note 1: as LSI(M), ship is not intended to beach during assault operations.)

Breakdown of Miscellaneous Weights (as BMS):
- 462 tons for spare crew quarters and recreational areas
- 200 tons for engineering workshop
- 200 tons for torpedo workshop
- 50 tons for working crane
- 488 for spare ammo and torpedoes

Breakdown of Miscellaneous Weights (as Seaplane Tender):
- 462 tons for spare crew quarters and recreational areas
- 200 tons for engineering workshop
- 200 tons for aircraft workshop
- 50 tons for working crane
- 488 for spare ammo, parts, bombs and torpedoes

Breakdown of Miscellaneous Weights (as Minelayer):
- 1200 tons for mines
- 150 tons for mine-launching rails
- 50 tons for working crane

Notes:
Ship was designed with canoe stern to serve better as minelayer.

Ships in Class:
- Almirante José Toribio Merino Saavedra (Submarine Mothership) - 1940
- Ministro Zentento (Landing Ship Infantry (Medium)) - 1941
- Presidente Errazuriz (Landing Ship Infantry (Medium)) - 1941

Ship design started out as a 'backsim' of the Swedish ship Visborg.

Rancagua-class, Chilean Landing Ship laid down 1940

Displacement:
1,464 t light; 1,510 t standard; 1,731 t normal; 1,909 t full load

Dimensions: Length overall / water x beam x draught
275.60 ft / 262.47 ft x 42.65 ft x 9.84 ft (normal load)
84.00 m / 80.00 m x 13.00 m x 3.00 m

Armament:
1 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1940 Model
Dual purpose gun in deck mount
on centreline forward
4 - 1.57" / 40.0 mm guns (2x2 guns), 1.95lbs / 0.89kg shells, 1940 Model
Dual purpose guns in deck mounts
on side, all amidships
Weight of broadside 21 lbs / 10 kg
Shells per gun, main battery: 750

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm 0.75" / 19 mm -
2nd: 0.75" / 19 mm - -

- Conning tower: 1.00" / 25 mm

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 2,377 shp / 1,773 Kw = 16.00 kts
Range 5,500nm at 15.00 kts
Bunker at max displacement = 399 tons

Complement:
133 - 174

Cost:
£0.374 million / $1.497 million

Distribution of weights at normal displacement:
Armament: 3 tons, 0.2 %
Armour: 7 tons, 0.4 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 4 tons, 0.2 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 3 tons, 0.2 %
Machinery: 64 tons, 3.7 %
Hull, fittings & equipment: 541 tons, 31.2 %
Fuel, ammunition & stores: 267 tons, 15.4 %
Miscellaneous weights: 850 tons, 49.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
3,413 lbs / 1,548 Kg = 252.8 x 3.0 " / 76 mm shells or 1.3 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 1.7 ft / 0.5 m
Roll period: 13.8 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.01
Seaboat quality (Average = 1.00): 1.89

Hull form characteristics:
Hull has raised forecastle
and transom stern
Block coefficient: 0.550
Length to Beam Ratio: 6.15 : 1
'Natural speed' for length: 19.16 kts
Power going to wave formation at top speed: 47 %
Trim (Max stability = 0, Max steadiness = 100): 37
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 18.04 ft / 5.50 m
- Forecastle (20 %): 18.04 ft / 5.50 m (11.48 ft / 3.50 m aft of break)
- Mid (50 %): 11.48 ft / 3.50 m
- Quarterdeck (15 %): 11.48 ft / 3.50 m
- Stern: 11.48 ft / 3.50 m
- Average freeboard: 12.80 ft / 3.90 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 67.8 %
- Above water (accommodation/working, high = better): 133.8 %
Waterplane Area: 8,134 Square feet or 756 Square metres
Displacement factor (Displacement / loading): 172 %
Structure weight / hull surface area: 48 lbs/sq ft or 233 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 1.98
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Ships in Class:
Fitted as LST:
- Rancagua: Laid down 1940
- Corral: 1941 (formerly named Chacabuco - renamed 1947)

Breakdown of Miscellaneous Weights:
(as LST)
- 224 tons for 8x AT36/75 medium tanks
- 64 tons for tank crew accomodations
- 30 tons for four 7.5 ton Saurer 8x8 heavy trucks (armoured repair and supply platoon)
- 48 tons for ARS Platoon crew accomodations
- 134 tons for ARS Platoon equipment and mobile workshop
- 35 tons for one 1 Landing Craft Mechanized or 2 Landing Craft Assault (12.5 tons each)
Total: 535 tons used, 315 tons remaining

(as LSM)
- 104 tons for eight Tortuga amphibious trucks or tanks
- 208 tons for crew and troop accomodations (8 Tortuga infantry carriers with 64 marines and 24 crew)
- 28 tons for eight 3.5 ton Saurer 8x8 medium trucks (deck load)
- 160 tons for crew and troop accomodations for trucks (80 men)
- 35 tons for one 1 Landing Craft Mechanized or 2 Landing Craft Assault (12.5 tons each)
Total: 535 tons used, 315 tons remaining

(both types)
- 75 tons for 50-ton rated crane (LCM + cargo)
- 200 tons for ballasting system for raising bow draft
- 40 tons for forward doors and unfolding landing ramp

LCA-12, Chilean 12-ton Landing Craft Assault of the 1939 Type
Lanchas de desembarco, Asalto

- Length: 42.65 feet overall
- Beam: 10 feet
- Draft: 1.75 feet loaded (forward), 2.25 feet loaded aft
- Displacement: 12.5 tons
- Capacity: 36 men or 900 pounds cargo
- Speed: 10 knots

Two prototypes built in October 1939. Total of 54 LCA-12s built by the time production ended in 1940.
Specs from British LCA.

LCM-35, Chilean 35-ton Landing Craft Mechanized of the 1939 Type
Lanchas de desembarco, Mecanizado

- Length: 13.6 m / 44.6 feet overall
- Beam: 4.26 m / 14 feet
- Draft: 1.2 m / 4 feet loaded
- Displacement: 35 tons
- Capacity: 100 men, or 27 tons cargo
- Speed: 7 knots

One prototype built in October 1939. Total of eleven LCM-35s built by the time production ended in 1940.
Specs from LCM Type-1.

Elicura, Chilean Barcaza laid down 1942

Displacement:
722 t light; 753 t standard; 1,035 t normal; 1,260 t full load

Dimensions: Length overall / water x beam x draught
189.31 ft / 182.74 ft x 33.79 ft x 9.02 ft (normal load)
57.70 m / 55.70 m x 10.30 m x 2.75 m

Armament:
4 - 1.57" / 40.0 mm guns (2x2 guns), 1.95lbs / 0.88kg shells, 1942 Model
Anti-aircraft guns in deck mounts
on side, all aft
4 - 1.10" / 27.9 mm guns (1x4 guns), 0.67lbs / 0.30kg shells, 1942 Model
Anti-aircraft guns in deck mount
on centreline aft, all raised guns - superfiring
Weight of broadside 10 lbs / 5 kg
Shells per gun, main battery: 1,500

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 2,422 shp / 1,807 Kw = 16.00 kts
Range 7,350nm at 15.00 kts
Bunker at max displacement = 507 tons

Complement:
90 - 118

Cost:
£0.224 million / $0.896 million

Distribution of weights at normal displacement:
Armament: 1 tons, 0.1 %
Machinery: 63 tons, 6.1 %
Hull, fittings & equipment: 257 tons, 24.9 %
Fuel, ammunition & stores: 313 tons, 30.2 %
Miscellaneous weights: 400 tons, 38.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,736 lbs / 788 Kg = 889.2 x 1.6 " / 40 mm shells or 1.0 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 1.2 ft / 0.4 m
Roll period: 13.0 seconds
Steadiness - As gun platform (Average = 50 %): 56 %
- Recoil effect (Restricted arc if above 1.00): 0.01
Seaboat quality (Average = 1.00): 1.19

Hull form characteristics:
Hull has raised forecastle, raised quarterdeck
Block coefficient: 0.650
Length to Beam Ratio: 5.41 : 1
'Natural speed' for length: 13.52 kts
Power going to wave formation at top speed: 61 %
Trim (Max stability = 0, Max steadiness = 100): 47
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 3.67 ft / 1.12 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 16.40 ft / 5.00 m
- Forecastle (15 %): 13.12 ft / 4.00 m (8.20 ft / 2.50 m aft of break)
- Mid (50 %): 8.20 ft / 2.50 m
- Quarterdeck (20 %): 15.09 ft / 4.60 m (8.20 ft / 2.50 m before break)
- Stern: 15.09 ft / 4.60 m
- Average freeboard: 10.52 ft / 3.21 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 64.7 %
- Above water (accommodation/working, high = better): 82.1 %
Waterplane Area: 4,731 Square feet or 439 Square metres
Displacement factor (Displacement / loading): 193 %
Structure weight / hull surface area: 37 lbs/sq ft or 183 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.90
- Longitudinal: 2.41
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is cramped

Breakdown of Miscellaneous Weights:
- 5 tons for Suite-42b electronics
- 240 tons for up to six tanks, trucks, vehicles, or deck cargo
- 15 tons for crew comforts (HVAC, etc)
- 140 tons for vehicle crews

Electronics:
- Type 103 "Nalca" navigational surface and air search radar (1 radar, 2 tons)
- Roth-389b backup diesel generator set (3 tons)

Ships in Class:
- Elicura (LSM-01) - 1942
- Orompello (LSM-02) - 1943

Barcaza M300, Chilean Landing Craft laid down 1944

Displacement:
260 t light; 266 t standard; 270 t normal; 273 t full load

Dimensions: Length overall / water x beam x draught
121.36 ft / 118.11 ft x 32.81 ft x 3.28 ft (normal load)
36.99 m / 36.00 m x 10.00 m x 1.00 m

Armament:
2 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1944 Model
Machine guns in deck mounts
on centreline ends, evenly spread
Weight of broadside 0 lbs / 0 kg
Shells per gun, main battery: 1,500

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Ends: 0.79" / 20 mm 52.49 ft / 16.00 m 9.84 ft / 3.00 m
65.62 ft / 20.00 m Unarmoured ends

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

- Conning tower: 0.79" / 20 mm

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 105 shp / 78 Kw = 8.00 kts
Range 700nm at 8.00 kts
Bunker at max displacement = 7 tons

Complement:
33 - 43

Cost:
£0.064 million / $0.256 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Armour: 16 tons, 5.9 %
- Belts: 15 tons, 5.6 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 0 tons, 0.1 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 1 tons, 0.3 %
Machinery: 3 tons, 1.0 %
Hull, fittings & equipment: 111 tons, 41.3 %
Fuel, ammunition & stores: 10 tons, 3.7 %
Miscellaneous weights: 130 tons, 48.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
950 lbs / 431 Kg = 3,892.6 x 0.8 " / 20 mm shells or 0.9 torpedoes
Stability (Unstable if below 1.00): 1.25
Metacentric height 1.4 ft / 0.4 m
Roll period: 11.6 seconds
Steadiness - As gun platform (Average = 50 %): 81 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 1.62

Hull form characteristics:
Hull has raised forecastle, raised quarterdeck
Block coefficient: 0.743
Length to Beam Ratio: 3.60 : 1
'Natural speed' for length: 10.87 kts
Power going to wave formation at top speed: 34 %
Trim (Max stability = 0, Max steadiness = 100): 50
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: 12.14 ft / 3.70 m
- Forecastle (20 %): 11.48 ft / 3.50 m (7.55 ft / 2.30 m aft of break)
- Mid (50 %): 7.55 ft / 2.30 m
- Quarterdeck (15 %): 11.15 ft / 3.40 m (7.55 ft / 2.30 m before break)
- Stern: 11.15 ft / 3.40 m
- Average freeboard: 8.93 ft / 2.72 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 56.8 %
- Above water (accommodation/working, high = better): 140.5 %
Waterplane Area: 3,227 Square feet or 300 Square metres
Displacement factor (Displacement / loading): 178 %
Structure weight / hull surface area: 28 lbs/sq ft or 137 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.89
- Longitudinal: 3.21
- Overall: 1.01
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Ships in Class:
- B1 - laid down October 1944
- B2 - laid down October 1945

Disembarkment of Pisagua, Chilean Landing Ship Dock laid down 1945

Displacement:
5,250 t light; 5,477 t standard; 7,871 t normal; 9,786 t full load

Dimensions: Length overall / water x beam x draught
473.17 ft / 459.32 ft x 72.18 ft x 15.09 ft (normal load)
144.22 m / 140.00 m x 22.00 m x 4.60 m

Armament:
4 - 5.12" / 130 mm guns (2x2 guns), 67.03lbs / 30.41kg shells, 1945 Model
Dual purpose guns in deck mounts
on centreline, all forward, 1 raised mount - superfiring
8 - 1.57" / 40.0 mm guns (4x2 guns), 1.95lbs / 0.89kg shells, 1945 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
16 - 1.10" / 27.9 mm guns (4x4 guns), 0.67lbs / 0.30kg shells, 1945 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 294 lbs / 134 kg
Shells per gun, main battery: 400

Machinery:
Diesel Internal combustion motors,
Geared drive, 4 shafts, 4,506 shp / 3,361 Kw = 15.00 kts
Range 26,500nm at 15.00 kts
Bunker at max displacement = 4,309 tons

Complement:
417 - 543

Cost:
£1.593 million / $6.373 million

Distribution of weights at normal displacement:
Armament: 37 tons, 0.5 %
Machinery: 114 tons, 1.4 %
Hull, fittings & equipment: 2,500 tons, 31.8 %
Fuel, ammunition & stores: 2,621 tons, 33.3 %
Miscellaneous weights: 2,600 tons, 33.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
24,004 lbs / 10,888 Kg = 358.1 x 5.1 " / 130 mm shells or 4.3 torpedoes
Stability (Unstable if below 1.00): 1.32
Metacentric height 5.0 ft / 1.5 m
Roll period: 13.5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.02
Seaboat quality (Average = 1.00): 1.72

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.551
Length to Beam Ratio: 6.36 : 1
'Natural speed' for length: 25.26 kts
Power going to wave formation at top speed: 29 %
Trim (Max stability = 0, Max steadiness = 100): 41
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: 24.00 ft / 7.32 m
- Forecastle (20 %): 18.00 ft / 5.49 m
- Mid (50 %): 16.00 ft / 4.88 m
- Quarterdeck (15 %): 16.00 ft / 4.88 m
- Stern: 16.00 ft / 4.88 m
- Average freeboard: 17.18 ft / 5.24 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 46.0 %
- Above water (accommodation/working, high = better): 181.2 %
Waterplane Area: 24,102 Square feet or 2,239 Square metres
Displacement factor (Displacement / loading): 252 %
Structure weight / hull surface area: 80 lbs/sq ft or 391 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.98
- Longitudinal: 1.33
- Overall: 1.01
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Breakdown of Miscellaneous Weights:
- 260t for 1x Barcaza M300 (Tank Landing Craft)
- 150t for tanks or supplies embarked aboard M300
- 280t for 8x LCM-35 landing craft (35t each)
- 216t for supplies or vehicles embarked for LCM-35s
- 1360t for 680 troops
- 25t for radar and electronics
- 9t for climatization
- 300t for all other supplies
2,600 tons total

Notes:
- 2,879 tons for water in well deck simmed as fuel; range is actually 8,500nm at 15 knots (1,430 tons of fuel)
- Well deck is 67m long by 15.5m wide by 2.75 meters deep, with total water weight of 2,877.2 tons
- Instead of Barcaza M300 + 8x LCM-35, well deck can carry up to 906 tons of amphibious vehicles; exact loadout depends upon mission requirements and can be changed in the field.

Organization of the Well Deck:
- 1x 36x10m Barcaza (Tank Landing Craft Mk.6)
- 2x 13.6x4.26m LCM-35 (mechanized landing craft) beside it.
- 3x 13.6x4.26m LCM-35 (mechanized landing craft) ahead of it.
- 3x 13.6x4.26m LCM-35 (mechanized landing craft) ahead of those.
Max load of 1x Barcaza and 8x LCM-35

Ships in Class:
- Disembarkment of Pisagua: laid down 1945, completed 1946