WesWorld

Repository for data pertaining to the subject.

(Historical data)

The Peruvian coast is seismically active place, and disasters do happen. Although Peru was intrigued by the new Bharati disaster relief ships, a decision was made to refit into service a new hospital ship.

Misericordia, refitted into service in 1943.

Enter ship name, Enter country Enter ship type laid down 1935

Displacement: 3,996 t light; 4,087 t standard; 4,560 t normal; 4,939 t full load

Dimensions: Length overall / water x beam x draught

312.56 ft / 305.12 ft x 59.06 ft x 14.76 ft (normal load) [95.27 m / 93.00 m x 18.00 m x 4.50 m]

Machinery:

Oil fired boilers, complex reciprocating steam engines, Geared drive, 2 shafts, 6,000 ihp / 4,476 Kw = 16.87 kts
Range 12,000nm at 10.00 kts (Bunkerage = 852 tons)

Complement: 276 - 360

Cost: £0.951 million / $3.805 million

Distribution of weights at normal displacement:

Armament: 0 tons, 0.0 %
Machinery: 336 tons, 7.4 %
Hull, fittings & equipment: 1,310 tons, 28.7 %
Fuel, ammunition & stores: 565 tons, 12.4 %
Miscellaneous weights: 2,350 tons, 51.5 %
-1,050 t: Medical Staff Quarters for 300 @ 3.5 t
-665 t: Patient Beds: 10 recovery, 30 ICU, 50 Serious care, 100 light care): 190 @ 3.5 t
-350 t: Facilities: ~3 operating tables, emergency/trauma center, labs, pharmacy, etc.
-200 t: 2 x LCI, davits, casualty receiving facilities
-70 t: Supplies
-15 t: Weight reserves

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 7,774 lbs / 3,526 Kg = 220.1 x 6 " / 152 mm shells or 1.6 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 2.7 ft / 0.8 m
Roll period: 15.1 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:

Hull has a flush deck
Block coefficient: 0.600
Length to Beam Ratio: 5.17: 1
'Natural speed' for length: 17.47 kts
Power going to wave formation at top speed: 50 %
Trim (Max stability = 0, Max steadiness = 100): 30
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: 23.62 ft / 7.20 m
- Forecastle (20 %): 19.69 ft / 6.00 m
- Mid (50 %): 19.69 ft / 6.00 m
- Quarterdeck (15 %): 19.69 ft / 6.00 m
- Stern: 19.69 ft / 6.00 m
- Average freeboard: 20.00 ft / 6.10 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 80.4 %
- Above water (accommodation/working, high = better): 179.0 %
Waterplane Area: 13,179 Square feet or 1,224 Square meters
Displacement factor (Displacement / loading): 151 %
Structure weight / hull surface area: 67 lbs/sq ft or 325 Kg/sq meter
Hull strength (Relative):
- Cross-sectional: 0.87
- Longitudinal: 3.23
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Excellent seaboat, comfortable, rides out heavy weather easily

(Historical data)

Two commercially owned tugs will be taken into service. They will ensure the Marina can respond to military or civilian emergencies on the high seas.

Consuela, refitted into service 1943
Maria, refitted into service 1943

Consuela, Peruvian Tug laid down 1935

Displacement: 999 t light; 1,027 t standard; 1,231 t normal; 1,394 t full load

Dimensions: Length overall / water x beam x draught
183.03 ft / 175.52 ft x 32.81 ft x 12.47 ft (normal load)
55.79 m / 53.50 m x 10.00 m x 3.80 m

Armament:
2 - 1.46" / 37.0 mm guns in single mounts, 1.55lbs / 0.70kg shells, 1935 Model Breech loading guns in deck mounts on side, evenly spread
2 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1935 Model Breech loading guns in deck mounts on side, evenly spread
Weight of broadside 4 lbs / 2 kg
Shells per gun, main battery: 1,000

Armor:
- Gun armor: Face (max) Other gunhouse (avg) Barbette/hoist (max)
2nd: 0.39" / 10 mm - -
3rd: 0.39" / 10 mm - -

Machinery:
Coal fired boilers, complex reciprocating steam engines,
Geared drive, 2 shafts, 3,000 ihp / 2,238 Kw = 16.47 kts
Range 8,000nm at 10.00 kts (Bunkerage = 366 tons)

Complement: 103 - 135

Cost: £0.312 million / $1.246 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Armor: 1 tons, 0.1 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 1 tons, 0.1 %
- Armor Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 185 tons, 15.0 %
Hull, fittings & equipment: 613 tons, 49.8 %
Fuel, ammunition & stores: 232 tons, 18.8 %
Miscellaneous weights: 200 tons, 16.3 %
-100 t: Towing gear
-50 t: Weight reserves
-40 t: Extra accommodation for 20 @ 2 t (gunners, repair personnel, etc.)
-10 t: Radar

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2,399 lbs / 1,088 Kg = 22.2 x 6 " / 152 mm shells or 1.0 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 1.1 ft / 0.3 m
Roll period: 13.0 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.600
Length to Beam Ratio: 5.35: 1
'Natural speed' for length: 13.25 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 25
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: 23.95 ft / 7.30 m
- Forecastle (20 %): 21.00 ft / 6.40 m
- Mid (50 %): 15.75 ft / 4.80 m (13.12 ft / 4.00 m aft of break)
- Quarterdeck (15 %): 13.12 ft / 4.00 m
- Stern: 13.12 ft / 4.00 m
- Average freeboard: 16.51 ft / 5.03 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 67.8 %
- Above water (accommodation/working, high = better): 121.1 %
Waterplane Area: 4,212 Square feet or 391 Square meters
Displacement factor (Displacement / loading): 215 %
Structure weight / hull surface area: 68 lbs/sq ft or 333 Kg/sq meter
Hull strength (Relative):
- Cross-sectional: 1.32
- Longitudinal: 19.21
- Overall: 1.72
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

Alpamayo, Peruvian Depot Ship laid down 1943

Displacement: 3,956 t light; 4,128 t standard; 7,322 t normal; 9,877 t full load

Dimensions: Length overall / water x beam x draught

362.53 ft / 360.89 ft x 49.21 ft x 19.69 ft (normal load) [110.50 m / 110.00 m x 15.00 m x 6.00 m]

Armament:

2 - 4.13" / 105 mm guns in single mounts, 35.32lbs / 16.02kg shells, 1943 Model Anti-aircraft guns in deck mounts on centerline ends, evenly spread
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.55lbs / 0.70kg shells, 1943 Model Anti-aircraft guns in deck mounts on side, evenly spread
Weight of broadside 83 lbs / 38 kg
Shells per gun, main battery: 500

Machinery:

Diesel Internal combustion motors, Geared drive, 1 shaft, 3,743 shp / 2,792 Kw = 14.00 kts
Range 58,000nm at 12.00 kts
Bunker at max displacement = 5,750 tons

Complement: 395 - 514

Cost: £1.052 million / $4.207 million

Distribution of weights at normal displacement:

Armament: 10 tons, 0.1 %
Machinery: 97 tons, 1.3 %
Hull, fittings & equipment: 2,049 tons, 28.0 %
Fuel, ammunition & stores: 3,366 tons, 46.0 %
Miscellaneous weights: 1,800 tons, 24.6 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 22,416 lbs / 10,168 Kg = 634.6 x 4.1 " / 105 mm shells or 4.5 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 2.1 ft / 0.6 m
Roll period: 14.3 seconds
Steadiness - As gun platform (Average = 50 %): 86 %
- Recoil effect (Restricted arc if above 1.00): 0.02
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:

Hull has a flush deck
Block coefficient: 0.733
Length to Beam Ratio: 7.33: 1
'Natural speed' for length: 19.00 kts
Power going to wave formation at top speed: 36 %
Trim (Max stability = 0, Max steadiness = 100): 43
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 1.64 ft / 0.50 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.33 ft / 6.50 m
- Forecastle (20 %): 19.69 ft / 6.00 m
- Mid (40 %): 16.40 ft / 5.00 m
- Quarterdeck (20 %): 16.40 ft / 5.00 m
- Stern: 18.04 ft / 5.50 m
- Average freeboard: 17.68 ft / 5.39 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 33.8 %
- Above water (accommodation/working, high = better): 119.5 %
Waterplane Area: 14,625 Square feet or 1,359 Square meters
Displacement factor (Displacement / loading): 353 %
Structure weight / hull surface area: 86 lbs/sq ft or 419 Kg/sq meter
Hull strength (Relative):
- Cross-sectional: 1.20
- Longitudinal: 2.74
- Overall: 1.30
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Low stowed cargo simmed as bunkers.

True radius 8,000 nm on bunkers of 472 tons

Additional bunkers used to sim low-stowed cargo of 2,700 tons - Fuel oil 800 tons; Diesel oil 800 tons; Fresh water 500 tons; Dry stores 600 tons; total 2,700 tons

Breakdown of miscellaneous weight:

Cranes and heavy handling equipment: 200 tons
Accommodation for service personnel: 800 tons
Electrical shop: 200 tons
Metalsmithing shop: 200 tons
Engine maintenance shop: 200 tons
Boat maintenance shop: 200 tons

Alpamayo - acquired and converted 1943/1944
Araranca - acquired and converted 1943/1944

Carrasco, Peruvian Destroyer Tender laid down 1948

Displacement: 2,321 t light; 2,409 t standard; 3,253 t normal; 3,929 t full load

Dimensions: Length overall / water x beam x draught

333.02 ft / 327.43 ft x 44.46 ft x 15.19 ft (normal load) [101.51 m / 99.80 m x 13.55 m x 4.63 m]

Armament:

2 - 4.13" / 105 mm guns (1x2 guns), 35.32lbs / 16.02kg shells, 1948 Model Dual purpose guns in deck mount on centerline forward
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1948 Model Anti-aircraft guns in deck mounts on side, all amidships
2 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1948 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 77 lbs / 35 kg
Shells per gun, main battery: 500

Armor:

Gun armor: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.59" / 15 mm 0.59" / 15 mm -
2nd: 0.39" / 10 mm 0.39" / 10 mm -

Conning tower: 0.98" / 25 mm

Machinery:

Diesel Internal combustion motors, Geared drive, 2 shafts, 5,648 shp / 4,214 Kw = 18.00 kts
Range 15,000nm at 15.00 kts
Bunker at max displacement = 1,520 tons

Complement: 215 - 280

Cost: £0.810 million / $3.241 million

Distribution of weights at normal displacement:

Armament: 10 tons, 0.3 %
Armor: 9 tons, 0.3 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 4 tons, 0.1 %
- Armor Deck: 0 tons, 0.0 %
- Conning Tower: 5 tons, 0.1 %
Machinery: 138 tons, 4.2 %
Hull, fittings & equipment: 1,064 tons, 32.7 %
Fuel, ammunition & stores: 932 tons, 28.7 %
Miscellaneous weights: 1,100 tons, 33.8 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 7,995 lbs / 3,627 Kg = 226.4 x 4.1 " / 105 mm shells or 2.1 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 1.8 ft / 0.5 m
Roll period: 14.0 seconds
Steadiness - As gun platform (Average = 50 %): 56 %
- Recoil effect (Restricted arc if above 1.00): 0.03
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:

Hull has rise forward of midbreak
Block coefficient: 0.515
Length to Beam Ratio: 7.37: 1
'Natural speed' for length: 18.09 kts
Power going to wave formation at top speed: 45 %
Trim (Max stability = 0, Max steadiness = 100): 28
Bow angle (Positive = bow angles forward): 11.00 degrees
Stern overhang: 1.64 ft / 0.50 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 20.34 ft / 6.20 m
- Forecastle (15 %): 19.69 ft / 6.00 m
- Mid (50 %): 19.69 ft / 6.00 m (14.76 ft / 4.50 m aft of break)
- Quarterdeck (30 %): 14.76 ft / 4.50 m
- Stern: 14.76 ft / 4.50 m
- Average freeboard: 17.26 ft / 5.26 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 54.4 %
- Above water (accommodation/working, high = better): 155.9 %
Waterplane Area: 9,833 Square feet or 913 Square meters
Displacement factor (Displacement / loading): 222 %
Structure weight / hull surface area: 61 lbs/sq ft or 299 Kg/sq meter
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 3.23
- Overall: 1.05
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

Low-stowed cargo simmed as additional fuel. Actual range is 5,000 nm with bunkers of 292 tons. (BAM 526). 550 tons of fuel available for transfer

Breakdown of miscellaneous weight:

Provision for navigational radar: 20 tons
Accommodation for additional crew and recreational spaces: 400 tons
Provision for workshop space: 300
Provision for spares storage space: 300 tons
Handling gear for cargo and repairs: 80 tons


Carrasco - Laid down 1 October 1948; Launched 29 March 1949; Completed 20 September 1949

Corongo, Peruvian Small Transport laid down 1948

Displacement: 685 t light; 709 t standard; 1,085 t normal; 1,386 t full load

Dimensions: Length overall / water x beam x draught

196.32 ft / 190.94 ft x 36.09 ft x 9.19 ft (normal load) [59.84 m / 58.20 m x 11.00 m x 2.80 m]

Armament:

2 - 1.46" / 37.0 mm guns (1x2 guns), 1.55lbs / 0.70kg shells, 1948 Model Anti-aircraft guns in deck mount on centerline forward
4 - 0.79" / 20.0 mm guns (2x2 guns), 0.24lbs / 0.11kg shells, 1948 Model Anti-aircraft guns in deck mounts on side, all amidships, all raised mounts - superfiring
Weight of broadside 4 lbs / 2 kg
Shells per gun, main battery: 600

Armor:

Gun armor: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.39" / 10 mm 0.39" / 10 mm -

Conning tower: 0.98" / 25 mm

Machinery:

Diesel Internal combustion motors, Geared drive, 2 shafts, 2,399 shp / 1,790 Kw = 16.00 kts
Range 20,000nm at 12.00 kts
Bunker at max displacement = 678 tons

Complement: 93 - 122

Cost: £0.243 million / $0.973 million

Distribution of weights at normal displacement:

Armament: 1 tons, 0.0 %
Armor: 3 tons, 0.3 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 1 tons, 0.1 %
- Armor Deck: 0 tons, 0.0 %
- Conning Tower: 2 tons, 0.2 %
Machinery: 59 tons, 5.4 %
Hull, fittings & equipment: 373 tons, 34.4 %
Fuel, ammunition & stores: 400 tons, 36.9 %
Miscellaneous weights: 250 tons, 23.0 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 3,143 lbs / 1,426 Kg = 2,033.6 x 1.5 " / 37 mm shells or 1.7 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 1.5 ft / 0.4 m
Roll period: 12.6 seconds
Steadiness - As gun platform (Average = 50 %): 74 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 1.32

Hull form characteristics:

Hull has a flush deck
Block coefficient: 0.600
Length to Beam Ratio: 5.29: 1
'Natural speed' for length: 13.82 kts
Power going to wave formation at top speed: 59 %
Trim (Max stability = 0, Max steadiness = 100): 56
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: 14.76 ft / 4.50 m
- Forecastle (30 %): 12.30 ft / 3.75 m
- Mid (45 %): 9.84 ft / 3.00 m
- Quarterdeck (35 %): 9.84 ft / 3.00 m
- Stern: 9.84 ft / 3.00 m
- Average freeboard: 11.06 ft / 3.37 m
Ship tends to be wet forward

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 44.4 %
- Above water (accommodation/working, high = better): 107.0 %
Waterplane Area: 5,040 Square feet or 468 Square meters
Displacement factor (Displacement / loading): 290 %
Structure weight / hull surface area: 51 lbs/sq ft or 249 Kg/sq meter
Hull strength (Relative):
- Cross-sectional: 1.12
- Longitudinal: 3.29
- Overall: 1.25
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

Low-stowed cargo simmed as additional bunkers - true radius 9,000 nm on bunkers of 172 tons (BAM 310)

Breakdown of miscellaneous weight:

Provision for cargo handling gear (cranes): 50 tons
Provision for up to 100 troops over short distances: 200 tons

Low stowed cargo - 390 tons


Corongo - Laid down 1 October 1948; Launched 29 January 1949; Completed 19 July 1949
Parcartambo - Laid down 1 October 1948; Launched 29 January 1949; Completed 19 July 1949
Bambas - Laid down 1 March 1949; Launched 29 June 1949; Completed 17 December 1949
Matagaga - Laid down 1 March 1949; Launched 29 June 1949; Completed 17 December 1949

Pacamayo, Peruvian Logistics Support Vessel; laid down 1949

Displacement: 1,760 t light; 1,820 t standard; 1,910 t normal; 1,982 t full load

Dimensions: Length overall / water x beam x draught

332.98 ft / 328.08 ft x 49.21 ft x 6.56 ft (normal load) [101.49 m / 100.00 m x 15.00 m x 2.00 m]

Armament:

8 - 1.46" / 37.0 mm guns (2x4 guns), 1.55lbs / 0.70kg shells, 1949 Model Anti-aircraft guns in deck mounts on centerline ends, evenly spread
8 - 0.79" / 20.0 mm guns (4x2 guns), 0.24lbs / 0.11kg shells, 1949 Model Anti-aircraft guns in deck mounts on side, all aft
Weight of broadside 14 lbs / 6 kg
Shells per gun, main battery: 2,400

Machinery:


Diesel Internal combustion motors, Geared drive, 2 shafts, 2,425 shp / 1,809 Kw = 15.00 kts
Range 3,000nm at 12.00 kts
Bunker at max displacement = 161 tons

Complement: 143 - 187

Cost: £0.544 million / $2.178 million

Distribution of weights at normal displacement:

Armament: 2 tons, 0.1 %
Machinery: 59 tons, 3.1 %
Hull, fittings & equipment: 799 tons, 41.9 %
Fuel, ammunition & stores: 150 tons, 7.9 %
Miscellaneous weights: 900 tons, 47.1 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 4,375 lbs / 1,985 Kg = 2,831.0 x 1.5 " / 37 mm shells or 1.6 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 2.1 ft / 0.6 m
Roll period: 14.3 seconds
Steadiness - As gun platform (Average = 50 %): 73 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 1.09

Hull form characteristics:

Hull has raised quarterdeck
Block coefficient: 0.631
Length to Beam Ratio: 6.67: 1
'Natural speed' for length: 18.11 kts
Power going to wave formation at top speed: 34 %
Trim (Max stability = 0, Max steadiness = 100): 67
Bow angle (Positive = bow angles forward): 8.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 11.48 ft / 3.50 m
- Forecastle (20 %): 9.84 ft / 3.00 m
- Mid (50 %): 9.84 ft / 3.00 m
- Quarterdeck (30 %): 11.48 ft / 3.50 m (9.84 ft / 3.00 m before break)
- Stern: 11.48 ft / 3.50 m
- Average freeboard: 10.47 ft / 3.19 m
Ship tends to be wet forward

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 63.9 %
- Above water (accommodation/working, high = better): 159.3 %
Waterplane Area: 12,154 Square feet or 1,129 Square meters
Displacement factor (Displacement / loading): 185 %
Structure weight / hull surface area: 54 lbs/sq ft or 266 Kg/sq meter
Hull strength (Relative):
- Cross-sectional: 1.13
- Longitudinal: 0.96
- 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

Breakdown of Miscellaneous Weight

Provision for bow doors and ramp - 20 tons
Provision for electronics - 20 tons
Cargo - 860 tons, including vehicles

Constructed under LST rules - Cost = 1760 tons - (Misc weight/2) 450 tons = 1310 tons

Pacamayo – Laid down 1 January 1949; Launched 9 June 1949; Completed 6 November 1949
Alcamarina - Laid down 1 July 1949; Launched 21 December 1949

Morales, Peruvian Salvage Tug laid down 1949

Displacement: 1,075 t light; 1,113 t standard; 1,840 t normal; 2,421 t full load

Dimensions: Length overall / water x beam x draught

218.73 ft / 213.25 ft x 39.37 ft x 13.94 ft (normal load) [66.67 m / 65.00 m x 12.00 m x 4.25 m]

Armament:

2 - 1.46" / 37.0 mm guns (1x2 guns), 1.55lbs / 0.70kg shells, 1949 Model Anti-aircraft guns in deck mount on centerline forward
2 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1949 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 4 lbs / 2 kg
Shells per gun, main battery: 500

Machinery:

Diesel Internal combustion motors, Geared drive, 2 shafts, 7,732 shp / 5,768 Kw = 20.00 kts
Range 16,000nm at 15.00 kts
Bunker at max displacement = 1,309 tons

Complement: 139 - 182

Cost: £0.490 million / $1.960 million

Distribution of weights at normal displacement:

Armament: 0 tons, 0.0 %
Machinery: 187 tons, 10.2 %
Hull, fittings & equipment: 667 tons, 36.3 %
Fuel, ammunition & stores: 765 tons, 41.6 %
Miscellaneous weights: 220 tons, 12.0 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 5,327 lbs / 2,416 Kg = 3,446.9 x 1.5 " / 37 mm shells or 1.9 torpedoes
Stability (Unstable if below 1.00): 1.15
Metacentric height 1.6 ft / 0.5 m
Roll period: 13.1 seconds
Steadiness - As gun platform (Average = 50 %): 68 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 1.09

Hull form characteristics: Hull has rise forward of midbreak
Block coefficient: 0.550
Length to Beam Ratio: 5.42: 1
'Natural speed' for length: 14.60 kts
Power going to wave formation at top speed: 67 %
Trim (Max stability = 0, Max steadiness = 100): 62
Bow angle (Positive = bow angles forward): 12.00 degrees
Stern overhang: 1.64 ft / 0.50 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 18.04 ft / 5.50 m
- Forecastle (20 %): 17.22 ft / 5.25 m
- Mid (50 %): 17.22 ft / 5.25 m (10.66 ft / 3.25 m aft of break)
- Quarterdeck (50 %): 10.66 ft / 3.25 m
- Stern: 10.66 ft / 3.25 m
- Average freeboard: 14.01 ft / 4.27 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 47.5 %
- Above water (accommodation/working, high = better): 138.3 %
Waterplane Area: 5,859 Square feet or 544 Square meters
Displacement factor (Displacement / loading): 308 %
Structure weight / hull surface area: 68 lbs/sq ft or 333 Kg/sq meter
Hull strength (Relative):
- Cross-sectional: 1.12
- Longitudinal: 5.66
- Overall: 1.32
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent

Breakdown of Miscellaneous Weight

Subsidiary low-speed towing diesel - 40 tons
Towing equipment - 80 tons
Salvage crane - 30 tons
High-capacity pumps - 40 tons
Submarine rescue apparatus/chamber - 30 tons

Morales – Laid down 1 July 1949; Launched 15 November 1949