WesWorld

Quoted

[SIZE=3]Potengi-class, Brazilian Riverine Tanker laid down 1943[/SIZE]

Displacement:
309 t light; 320 t standard; 519 t normal; 679 t full load

Dimensions: Length overall / water x beam x draught
188.30 ft / 180.45 ft x 26.25 ft x 5.91 ft (normal load)
57.39 m / 55.00 m x 8.00 m x 1.80 m

Machinery:
Diesel Internal combustion motors,
Geared drive, 1 shaft, 508 shp / 379 Kw = 12.00 kts
Range 15,500nm at 12.00 kts
Bunker at max displacement = 360 tons

Complement:
53 - 70

Cost:
£0.077 million / $0.306 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 13 tons, 2.5 %
Hull, fittings & equipment: 146 tons, 28.1 %
Fuel, ammunition & stores: 210 tons, 40.5 %
Miscellaneous weights: 150 tons, 28.9 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,458 lbs / 661 Kg = 13.5 x 6 " / 152 mm shells or 1.4 torpedoes
Stability (Unstable if below 1.00): 1.21
Metacentric height 0.9 ft / 0.3 m
Roll period: 11.3 seconds
Steadiness - As gun platform (Average = 50 %): 100 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 2.00

Hull form characteristics:
Hull has raised forecastle, raised quarterdeck
Block coefficient: 0.650
Length to Beam Ratio: 6.88 : 1
'Natural speed' for length: 13.43 kts
Power going to wave formation at top speed: 41 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 5.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 14.76 ft / 4.50 m
- Forecastle (25 %): 13.12 ft / 4.00 m (5.58 ft / 1.70 m aft of break)
- Mid (50 %): 5.58 ft / 1.70 m
- Quarterdeck (15 %): 16.40 ft / 5.00 m (5.58 ft / 1.70 m before break)
- Stern: 16.40 ft / 5.00 m
- Average freeboard: 9.25 ft / 2.82 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 40.9 %
- Above water (accommodation/working, high = better): 71.7 %
Waterplane Area: 3,577 Square feet or 332 Square metres
Displacement factor (Displacement / loading): 295 %
Structure weight / hull surface area: 27 lbs/sq ft or 133 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 1.81
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, rides out heavy weather easily

Quoted

Originally posted by BruceDuncan
I recall that Snip has posited a smaller support tanker design. Were any of them actually laid down? If so, the larger vessel is a good match. If not, perhaps more but smaller vessels would be in order. Depends in large measure on fleet doctrine.

Quoted

[SIZE=3]Caboclo-class, Brazilian Coastal Construction and Survey Tender laid down 1943[/SIZE]

Displacement:
400 t light; 411 t standard; 578 t normal; 711 t full load

Dimensions: Length overall / water x beam x draught
137.80 ft / 134.51 ft x 29.53 ft x 8.53 ft (normal load)
42.00 m / 41.00 m x 9.00 m x 2.60 m

Armament:
1 - 0.31" / 7.9 mm guns in single mounts, 0.02lbs / 0.01kg shells, 1943 Model
Machine gun in deck mount
on centreline forward
Weight of broadside 0 lbs / 0 kg
Shells per gun, main battery: 3,000

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 593 shp / 443 Kw = 12.00 kts
Range 11,000nm at 12.00 kts
Bunker at max displacement = 300 tons

Complement:
58 - 76

Cost:
£0.106 million / $0.423 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 15 tons, 2.7 %
Hull, fittings & equipment: 135 tons, 23.3 %
Fuel, ammunition & stores: 178 tons, 30.8 %
Miscellaneous weights: 250 tons, 43.3 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,047 lbs / 475 Kg = 69,057.7 x 0.3 " / 8 mm shells or 0.9 torpedoes
Stability (Unstable if below 1.00): 1.12
Metacentric height 1.0 ft / 0.3 m
Roll period: 12.5 seconds
Steadiness - As gun platform (Average = 50 %): 63 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 1.81

Hull form characteristics:
Hull has raised forecastle, raised quarterdeck
Block coefficient: 0.597
Length to Beam Ratio: 4.56 : 1
'Natural speed' for length: 11.60 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 35
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: 13.12 ft / 4.00 m
- Forecastle (20 %): 13.12 ft / 4.00 m (6.56 ft / 2.00 m aft of break)
- Mid (50 %): 6.56 ft / 2.00 m
- Quarterdeck (20 %): 13.12 ft / 4.00 m (6.56 ft / 2.00 m before break)
- Stern: 13.12 ft / 4.00 m
- Average freeboard: 9.19 ft / 2.80 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 56.6 %
- Above water (accommodation/working, high = better): 62.4 %
Waterplane Area: 2,897 Square feet or 269 Square metres
Displacement factor (Displacement / loading): 206 %
Structure weight / hull surface area: 31 lbs/sq ft or 152 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.87
- Longitudinal: 3.43
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is cramped
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Breakdown of Miscellaneous Weights:
- 20 tons for work crane
- 80 tons for metal/welding and woodworking shop
- 150 tons for cargo

Notes:
- Bunker simmed partially as cargo. Actual range is 2,500nm @ 12 knots.

Quoted

- Bunker simmed partially as cargo. Actual range is 2,500nm @ 12 knots.

Quoted

Originally posted by Rooijen10

Quoted

- Bunker simmed partially as cargo. Actual range is 2,500nm @ 12 knots.

... which is how much?

Quoted

Originally posted by BruceDuncan
So, for that matter, would some pontoons.

Quoted

Originally posted by Brockpaine
Sure, could be useful.

Quoted

Bahia (ex-Biliran), Brazilian (ex-Philippine) Destroyer Leader & Anti-Aircraft Cruiser (ex-Light Cruiser) laid down 1933 (Engine 1943)

Displacement:
3,160 t light; 3,335 t standard; 3,948 t normal; 4,439 t full load

Dimensions: Length overall / water x beam x draught
439.62 ft / 433.07 ft x 41.01 ft x 17.29 ft (normal load)
134.00 m / 132.00 m x 12.50 m x 5.27 m

Armament:
8 - 4.72" / 120 mm guns (4x2 guns), 52.91lbs / 24.00kg shells, 1942 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread, 2 raised mounts - superfiring
16 - 1.46" / 37.0 mm guns (4x4 guns), 1.55lbs / 0.70kg shells, 1943 Model
Anti-aircraft guns in deck mounts
on side, 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, all raised mounts
8 - 0.79" / 20.0 mm guns (4x2 guns), 0.24lbs / 0.11kg shells, 1943 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
6 - 0.54" / 13.7 mm guns in single mounts, 0.08lbs / 0.04kg shells, 1933 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 463 lbs / 210 kg
Shells per gun, main battery: 350
10 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 1.57" / 40 mm 433.07 ft / 132.00 m 11.48 ft / 3.50 m
Ends: Unarmoured
Main Belt covers 154 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.59" / 15 mm 1.97" / 50 mm
2nd: 0.59" / 15 mm - -
3rd: 0.59" / 15 mm - -
4th: 0.39" / 10 mm - -
5th: 0.39" / 10 mm - -

- Armour deck: 0.79" / 20 mm, Conning tower: 1.97" / 50 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 48,200 shp / 35,958 Kw = 32.51 kts
Range 10,000nm at 15.00 kts
Bunker at max displacement = 1,104 tons

Complement:
248 - 323

Cost:
£1.576 million / $6.303 million

Distribution of weights at normal displacement:
Armament: 58 tons, 1.5 %
Armour: 495 tons, 12.5 %
- Belts: 290 tons, 7.3 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 24 tons, 0.6 %
- Armour Deck: 171 tons, 4.3 %
- Conning Tower: 11 tons, 0.3 %
Machinery: 1,245 tons, 31.5 %
Hull, fittings & equipment: 1,163 tons, 29.4 %
Fuel, ammunition & stores: 788 tons, 20.0 %
Miscellaneous weights: 200 tons, 5.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
2,469 lbs / 1,120 Kg = 46.8 x 4.7 " / 120 mm shells or 0.7 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 1.6 ft / 0.5 m
Roll period: 13.7 seconds
Steadiness - As gun platform (Average = 50 %): 67 %
- Recoil effect (Restricted arc if above 1.00): 0.46
Seaboat quality (Average = 1.00): 1.03

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.450
Length to Beam Ratio: 10.56 : 1
'Natural speed' for length: 23.79 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 65
Bow angle (Positive = bow angles forward): 16.60 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 21.98 ft / 6.70 m
- Forecastle (20 %): 15.42 ft / 4.70 m
- Mid (60 %): 15.42 ft / 4.70 m
- Quarterdeck (15 %): 15.42 ft / 4.70 m
- Stern: 15.42 ft / 4.70 m
- Average freeboard: 15.94 ft / 4.86 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 120.7 %
- Above water (accommodation/working, high = better): 85.3 %
Waterplane Area: 11,768 Square feet or 1,093 Square metres
Displacement factor (Displacement / loading): 108 %
Structure weight / hull surface area: 54 lbs/sq ft or 262 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.69
- Longitudinal: 1.62
- Overall: 0.75
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped

Quoted

[SIZE=3]Paraguassú, Brazilian Motochata Fuvial laid down 1929[/SIZE]

Displacement:
600 t light; 616 t standard; 801 t normal; 949 t full load

Dimensions: Length overall / water x beam x draught
231.39 ft / 229.66 ft x 29.53 ft x 5.91 ft (normal load)
70.53 m / 70.00 m x 9.00 m x 1.80 m

Armament:
1 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1929 Model
Machine gun in deck mount
on centreline forward
Weight of broadside 0 lbs / 0 kg
Shells per gun, main battery: 1,500

Machinery:
Oil fired boilers, simple reciprocating steam engines,
Direct drive, 1 shaft, 650 ihp / 485 Kw = 12.00 kts
Range 7,500nm at 12.00 kts
Bunker at max displacement = 333 tons

Complement:
74 - 97

Cost:
£0.131 million / $0.523 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 83 tons, 10.4 %
Hull, fittings & equipment: 246 tons, 30.8 %
Fuel, ammunition & stores: 201 tons, 25.1 %
Miscellaneous weights: 270 tons, 33.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,408 lbs / 639 Kg = 5,768.2 x 0.8 " / 20 mm shells or 0.8 torpedoes
Stability (Unstable if below 1.00): 1.22
Metacentric height 1.2 ft / 0.4 m
Roll period: 11.5 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 1.36

Hull form characteristics:
Hull has raised quarterdeck
Block coefficient: 0.700
Length to Beam Ratio: 7.78 : 1
'Natural speed' for length: 15.15 kts
Power going to wave formation at top speed: 33 %
Trim (Max stability = 0, Max steadiness = 100): 51
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: 9.84 ft / 3.00 m
- Forecastle (10 %): 6.56 ft / 2.00 m
- Mid (50 %): 6.56 ft / 2.00 m
- Quarterdeck (15 %): 16.40 ft / 5.00 m (6.56 ft / 2.00 m before break)
- Stern: 16.40 ft / 5.00 m
- Average freeboard: 8.17 ft / 2.49 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 71.2 %
- Above water (accommodation/working, high = better): 91.2 %
Waterplane Area: 5,399 Square feet or 502 Square metres
Displacement factor (Displacement / loading): 183 %
Structure weight / hull surface area: 34 lbs/sq ft or 166 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.06
- Longitudinal: 0.98
- Overall: 1.00
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

Quoted

Originally posted by Hood
The Caboclo looks just like the sort of thing Argentina should probably build for the Rio Paraguay too.