If tech, whatnot is OK with mods
San Martin, USA Armoured Cruiser laid down 1891
Displacement:
5,560 t light; 5,808 t standard; 7,000 t normal; 7,953 t full load
Dimensions: Length overall / water x beam x draught
320.00 ft / 320.00 ft x 56.00 ft x 24.50 ft (normal load)
97.54 m / 97.54 m x 17.07 m x 7.47 m
Armament:
4 - 7.50" / 191 mm guns in single mounts, 210.94lbs / 95.68kg shells, 1891 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
8 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1891 Model
Breech loading guns in casemate mounts
on side, evenly spread
8 guns in hull casemates - Limited use in all but light seas
6 - 2.36" / 60.0 mm guns in single mounts, 6.59lbs / 2.99kg shells, 1891 Model
Quick firing guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
8 - 1.85" / 47.0 mm guns in single mounts, 3.17lbs / 1.44kg shells, 1891 Model
Quick firing guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 1,773 lbs / 804 kg
Shells per gun, main battery: 100
4 - 18.0" / 457.2 mm above water torpedoes, 2 - 18.0" / 457.2 mm submerged torpedo tubes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 8.00" / 203 mm 195.00 ft / 59.44 m 9.00 ft / 2.74 m
Ends: 3.00" / 76 mm 125.00 ft / 38.10 m 7.00 ft / 2.13 m
Upper: 4.00" / 102 mm 195.00 ft / 59.44 m 6.00 ft / 1.83 m
Main Belt covers 94 % of normal length
Main belt does not fully cover magazines and engineering spaces
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 8.00" / 203 mm 6.00" / 152 mm 8.00" / 203 mm
2nd: 2.00" / 51 mm - 4.00" / 102 mm
3rd: 1.00" / 25 mm - -
4th: 1.00" / 25 mm - -
- Armour deck: 2.00" / 51 mm, Conning tower: 10.00" / 254 mm
Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 8,000 ihp / 5,968 Kw = 17.25 kts
Range 9,500nm at 10.00 kts
Bunker at max displacement = 2,145 tons (100% coal)
Complement:
382 - 497
Cost:
£0.584 million / $2.337 million
Distribution of weights at normal displacement:
Armament: 222 tons, 3.2 %
Armour: 1,899 tons, 27.1 %
- Belts: 938 tons, 13.4 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 416 tons, 5.9 %
- Armour Deck: 466 tons, 6.7 %
- Conning Tower: 79 tons, 1.1 %
Machinery: 1,455 tons, 20.8 %
Hull, fittings & equipment: 1,934 tons, 27.6 %
Fuel, ammunition & stores: 1,440 tons, 20.6 %
Miscellaneous weights: 50 tons, 0.7 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
7,034 lbs / 3,190 Kg = 33.3 x 7.5 " / 191 mm shells or 1.3 torpedoes
Stability (Unstable if below 1.00): 1.34
Metacentric height 3.5 ft / 1.1 m
Roll period: 12.5 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.26
Seaboat quality (Average = 1.00): 1.53
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.558
Length to Beam Ratio: 5.71 : 1
'Natural speed' for length: 17.89 kts
Power going to wave formation at top speed: 50 %
Trim (Max stability = 0, Max steadiness = 100): 33
Bow angle (Positive = bow angles forward): -14.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 19.00 ft / 5.79 m
- Forecastle (20 %): 13.00 ft / 3.96 m
- Mid (50 %): 13.00 ft / 3.96 m
- Quarterdeck (18 %): 13.00 ft / 3.96 m
- Stern: 13.00 ft / 3.96 m
- Average freeboard: 13.48 ft / 4.11 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 96.3 %
- Above water (accommodation/working, high = better): 72.4 %
Waterplane Area: 12,600 Square feet or 1,171 Square metres
Displacement factor (Displacement / loading): 106 %
Structure weight / hull surface area: 97 lbs/sq ft or 475 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.90
- Longitudinal: 2.61
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is cramped
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
San Martin, USA Armoured Cruiser laid down 1891
Displacement:
5,560 t light; 5,808 t standard; 7,000 t normal; 7,953 t full load
Dimensions: Length overall / water x beam x draught
320.00 ft / 320.00 ft x 56.00 ft x 24.50 ft (normal load)
97.54 m / 97.54 m x 17.07 m x 7.47 m
Armament:
4 - 7.50" / 191 mm guns in single mounts, 210.94lbs / 95.68kg shells, 1891 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
8 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1891 Model
Breech loading guns in casemate mounts
on side, evenly spread
8 guns in hull casemates - Limited use in all but light seas
6 - 2.36" / 60.0 mm guns in single mounts, 6.59lbs / 2.99kg shells, 1891 Model
Quick firing guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
8 - 1.85" / 47.0 mm guns in single mounts, 3.17lbs / 1.44kg shells, 1891 Model
Quick firing guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 1,773 lbs / 804 kg
Shells per gun, main battery: 100
4 - 18.0" / 457.2 mm above water torpedoes, 2 - 18.0" / 457.2 mm submerged torpedo tubes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 8.00" / 203 mm 195.00 ft / 59.44 m 9.00 ft / 2.74 m
Ends: 3.00" / 76 mm 125.00 ft / 38.10 m 7.00 ft / 2.13 m
Upper: 4.00" / 102 mm 195.00 ft / 59.44 m 6.00 ft / 1.83 m
Main Belt covers 94 % of normal length
Main belt does not fully cover magazines and engineering spaces
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 8.00" / 203 mm 6.00" / 152 mm 8.00" / 203 mm
2nd: 2.00" / 51 mm - 4.00" / 102 mm
3rd: 1.00" / 25 mm - -
4th: 1.00" / 25 mm - -
- Armour deck: 2.00" / 51 mm, Conning tower: 10.00" / 254 mm
Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 8,000 ihp / 5,968 Kw = 17.25 kts
Range 9,500nm at 10.00 kts
Bunker at max displacement = 2,145 tons (100% coal)
Complement:
382 - 497
Cost:
£0.584 million / $2.337 million
Distribution of weights at normal displacement:
Armament: 222 tons, 3.2 %
Armour: 1,899 tons, 27.1 %
- Belts: 938 tons, 13.4 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 416 tons, 5.9 %
- Armour Deck: 466 tons, 6.7 %
- Conning Tower: 79 tons, 1.1 %
Machinery: 1,455 tons, 20.8 %
Hull, fittings & equipment: 1,934 tons, 27.6 %
Fuel, ammunition & stores: 1,440 tons, 20.6 %
Miscellaneous weights: 50 tons, 0.7 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
7,034 lbs / 3,190 Kg = 33.3 x 7.5 " / 191 mm shells or 1.3 torpedoes
Stability (Unstable if below 1.00): 1.34
Metacentric height 3.5 ft / 1.1 m
Roll period: 12.5 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.26
Seaboat quality (Average = 1.00): 1.53
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.558
Length to Beam Ratio: 5.71 : 1
'Natural speed' for length: 17.89 kts
Power going to wave formation at top speed: 50 %
Trim (Max stability = 0, Max steadiness = 100): 33
Bow angle (Positive = bow angles forward): -14.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 19.00 ft / 5.79 m
- Forecastle (20 %): 13.00 ft / 3.96 m
- Mid (50 %): 13.00 ft / 3.96 m
- Quarterdeck (18 %): 13.00 ft / 3.96 m
- Stern: 13.00 ft / 3.96 m
- Average freeboard: 13.48 ft / 4.11 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 96.3 %
- Above water (accommodation/working, high = better): 72.4 %
Waterplane Area: 12,600 Square feet or 1,171 Square metres
Displacement factor (Displacement / loading): 106 %
Structure weight / hull surface area: 97 lbs/sq ft or 475 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.90
- Longitudinal: 2.61
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is cramped
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
Aside from needing the armored belt to be a tad bit longer to cover all the engineering and magazine spaces, this vessel is likely fine. I was going to question the logic of some many types of arms that are close to each other in size, but then remembered that it was sort of common in those years. Even the mix of roughly 6 pounders and 3 pounders is not unheard of on a cruiser in the 1890s, nor is a mix of 6 inch and 7.5 inch guns.
Ahoj!
Yup. Nice.
Borys
This ship is slow coastal defence ship. Armored Cruisers need at least 20 knots speed, and twin 7.5" is a bit anachronistic for the date. They just don't have the punch to be justified over the secondary 6"s. Single 9-10" guns like the UK Armored Cruisers, perhaps?
Actually the ship is roughly correct for the historical San Martin. The designed speed was 18.5 knots at 8,600 hp, forced 13,000 hp got the ship up to 20 knots, though even trails speed wasn't up to 20 knots (19.8)/ Her main guns were 8" rather than 7.5" (Italian Garibaldi types) or two 10" guns (or like the Japanese, mix them). Using a Rohirrim style gun whould be either 7.5" or 9", however there are lots of nations that build guns (including Italy oddly enough)
Well I went with 21 kts on my cruisers but they are realy over grown light cruisers...
You have quite heavy armor there, reducing it especially the deck armor can get you some more speed. I would suggest reducing deck to 1", and belt to 7", using the weight saved to push speed up to 18.5kts, and possibly the heavier more common 8" guns, or even 9" guns.
I prefer belt armour >= the main calibre, but I did increase speed by lowering the deck armour. I had to increase disp a little, but I think it works,
San Martin, USA Armoured Cruiser laid down 1891
Displacement:
5,920 t light; 6,168 t standard; 7,400 t normal; 8,386 t full load
Dimensions: Length overall / water x beam x draught
320.00 ft / 320.00 ft x 57.25 ft x 26.00 ft (normal load)
97.54 m / 97.54 m x 17.45 m x 7.92 m
Armament:
4 - 8.00" / 203 mm guns in single mounts, 250.00lbs / 113.40kg shells, 1891 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
6 - 5.00" / 127 mm guns in single mounts, 60.00lbs / 27.22kg shells, 1891 Model
Breech loading guns in casemate mounts
on side, evenly spread
6 guns in hull casemates - Limited use in all but light seas
4 - 5.00" / 127 mm guns in single mounts, 60.00lbs / 27.22kg shells, 1891 Model
Quick firing guns in deck mounts
on side ends, evenly spread
10 - 2.36" / 60.0 mm guns in single mounts, 6.00lbs / 2.72kg shells, 1891 Model
Quick firing guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 1,660 lbs / 753 kg
Shells per gun, main battery: 100
4 - 18.0" / 457.2 mm above water torpedoes, 2 - 18.0" / 457.2 mm submerged torpedo tubes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 8.25" / 210 mm 239.50 ft / 73.00 m 8.00 ft / 2.44 m
Ends: 3.00" / 76 mm 80.50 ft / 24.54 m 6.00 ft / 1.83 m
Upper: 4.00" / 102 mm 239.50 ft / 73.00 m 6.00 ft / 1.83 m
Main Belt covers 115 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 8.00" / 203 mm 6.00" / 152 mm 8.00" / 203 mm
2nd: 2.00" / 51 mm - 4.00" / 102 mm
3rd: 2.00" / 51 mm - -
4th: 1.00" / 25 mm - -
- Armour deck: 1.00" / 25 mm, Conning tower: 8.00" / 203 mm
Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 10,895 ihp / 8,127 Kw = 18.50 kts
Range 9,500nm at 10.00 kts
Bunker at max displacement = 2,218 tons (100% coal)
Complement:
398 - 518
Cost:
£0.665 million / $2.658 million
Distribution of weights at normal displacement:
Armament: 214 tons, 2.9 %
Armour: 1,699 tons, 23.0 %
- Belts: 972 tons, 13.1 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 426 tons, 5.8 %
- Armour Deck: 235 tons, 3.2 %
- Conning Tower: 65 tons, 0.9 %
Machinery: 1,981 tons, 26.8 %
Hull, fittings & equipment: 1,975 tons, 26.7 %
Fuel, ammunition & stores: 1,480 tons, 20.0 %
Miscellaneous weights: 50 tons, 0.7 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
5,027 lbs / 2,280 Kg = 19.6 x 8.0 " / 203 mm shells or 1.0 torpedoes
Stability (Unstable if below 1.00): 1.24
Metacentric height 3.2 ft / 1.0 m
Roll period: 13.4 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.26
Seaboat quality (Average = 1.00): 1.31
Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.544
Length to Beam Ratio: 5.59 : 1
'Natural speed' for length: 17.89 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 46
Bow angle (Positive = bow angles forward): -14.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 19.00 ft / 5.79 m
- Forecastle (20 %): 19.00 ft / 5.79 m (12.00 ft / 3.66 m aft of break)
- Mid (50 %): 12.00 ft / 3.66 m
- Quarterdeck (18 %): 12.00 ft / 3.66 m
- Stern: 12.00 ft / 3.66 m
- Average freeboard: 13.40 ft / 4.08 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 113.9 %
- Above water (accommodation/working, high = better): 64.9 %
Waterplane Area: 12,711 Square feet or 1,181 Square metres
Displacement factor (Displacement / loading): 100 %
Structure weight / hull surface area: 97 lbs/sq ft or 476 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.89
- Longitudinal: 2.69
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Good seaboat, rides out heavy weather easily
The counterpart PC(Maybe)
San Luis, USA Protected Cruiser laid down 1890
Displacement:
3,130 t light; 3,235 t standard; 4,200 t normal; 4,973 t full load
Dimensions: Length overall / water x beam x draught
225.00 ft / 225.00 ft x 48.00 ft x 22.50 ft (normal load)
68.58 m / 68.58 m x 14.63 m x 6.86 m
Armament:
2 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1890 Model
Quick firing guns in deck mounts
on centreline ends, evenly spread
4 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1890 Model
Quick firing guns in deck mounts
on side, evenly spread
4 - 2.00" / 50.8 mm guns in single mounts, 4.00lbs / 1.81kg shells, 1890 Model
Quick firing guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 208 lbs / 94 kg
Shells per gun, main battery: 150
2 - 18.0" / 457.2 mm above water torpedoes, 2 - 18.0" / 457.2 mm submerged torpedo tubes
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm - -
2nd: 1.00" / 25 mm - -
3rd: 0.50" / 13 mm - -
- Armour deck: 2.50" / 64 mm, Conning tower: 6.50" / 165 mm
Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 9,547 ihp / 7,122 Kw = 18.50 kts
Range 10,000nm at 10.00 kts
Bunker at max displacement = 1,738 tons (100% coal)
Complement:
260 - 339
Cost:
£0.379 million / $1.515 million
Distribution of weights at normal displacement:
Armament: 26 tons, 0.6 %
Armour: 418 tons, 10.0 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 15 tons, 0.4 %
- Armour Deck: 367 tons, 8.7 %
- Conning Tower: 36 tons, 0.9 %
Machinery: 1,767 tons, 42.1 %
Hull, fittings & equipment: 859 tons, 20.5 %
Fuel, ammunition & stores: 1,070 tons, 25.5 %
Miscellaneous weights: 60 tons, 1.4 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,451 lbs / 658 Kg = 45.3 x 4.0 " / 102 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.06
Metacentric height 1.9 ft / 0.6 m
Roll period: 14.8 seconds
Steadiness - As gun platform (Average = 50 %): 92 %
- Recoil effect (Restricted arc if above 1.00): 0.05
Seaboat quality (Average = 1.00): 0.92
Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.605
Length to Beam Ratio: 4.69 : 1
'Natural speed' for length: 15.00 kts
Power going to wave formation at top speed: 67 %
Trim (Max stability = 0, Max steadiness = 100): 100
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: 16.50 ft / 5.03 m
- Forecastle (25 %): 16.50 ft / 5.03 m (10.50 ft / 3.20 m aft of break)
- Mid (50 %): 10.50 ft / 3.20 m
- Quarterdeck (15 %): 10.50 ft / 3.20 m
- Stern: 10.50 ft / 3.20 m
- Average freeboard: 12.00 ft / 3.66 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 152.8 %
- Above water (accommodation/working, high = better): 55.3 %
Waterplane Area: 7,936 Square feet or 737 Square metres
Displacement factor (Displacement / loading): 99 %
Structure weight / hull surface area: 68 lbs/sq ft or 330 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.87
- Longitudinal: 3.68
- Overall: 1.00
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
But I -as Nverse France- would build her as a Protected cruiser of 6 Ktons light. With single 195's and a load of 140mm guns.
QuoteMartino, French export- UdSA First rate Cruiser laid down 1891
Displacement:
6.006 t light; 6.269 t standard; 6.926 t normal; 7.451 t full load
Dimensions: Length overall / water x beam x draught
396,98 ft / 393,70 ft x 72,18 ft x 16,40 ft (normal load)
121,00 m / 120,00 m x 22,00 m x 5,00 m
Armament:
4 - 7,68" / 195 mm guns in single mounts, 226,24lbs / 102,62kg shells, 1891 Model
Breech loading guns in turrets (on barbettes)
on centreline, evenly spread
Aft Main mounts separated by engine room
8 - 5,51" / 140 mm guns in single mounts, 83,72lbs / 37,98kg shells, 1891 Model
Breech loading guns in casemate mounts
on side, evenly spread
12 - 2,76" / 70,0 mm guns (6x2 guns), 10,47lbs / 4,75kg shells, 1891 Model
Quick firing guns in deck mounts
on side, evenly spread
Weight of broadside 1.700 lbs / 771 kg
Shells per gun, main battery: 120
4 - 16,0" / 406,4 mm submerged torpedo tubes
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 5,50" / 140 mm 2,50" / 64 mm 5,00" / 127 mm
2nd: 3,00" / 76 mm - -
- Armour deck: 3,00" / 76 mm
Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 9.876 ihp / 7.367 Kw = 18,50 kts
Range 8.000nm at 8,00 kts
Bunker at max displacement = 1.181 tons (100% coal)
Complement:
379 - 493
Cost:
£0,640 million / $2,561 million
Distribution of weights at normal displacement:
Armament: 213 tons, 3,1%
Armour: 1.357 tons, 19,6%
- Belts: 0 tons, 0,0%
- Torpedo bulkhead: 0 tons, 0,0%
- Armament: 286 tons, 4,1%
- Armour Deck: 1.070 tons, 15,5%
- Conning Tower: 0 tons, 0,0%
Machinery: 1.796 tons, 25,9%
Hull, fittings & equipment: 2.602 tons, 37,6%
Fuel, ammunition & stores: 919 tons, 13,3%
Miscellaneous weights: 40 tons, 0,6%
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
7.168 lbs / 3.251 Kg = 31,7 x 7,7 " / 195 mm shells or 1,4 torpedoes
Stability (Unstable if below 1.00): 1,58
Metacentric height 6,7 ft / 2,0 m
Roll period: 11,8 seconds
Steadiness - As gun platform (Average = 50 %): 85 %
- Recoil effect (Restricted arc if above 1.00): 0,14
Seaboat quality (Average = 1.00): 1,70
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,520
Length to Beam Ratio: 5,45 : 1
'Natural speed' for length: 19,84 kts
Power going to wave formation at top speed: 45 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): -5,00 degrees
Stern overhang: 3,28 ft / 1,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22,97 ft / 7,00 m
- Forecastle (20%): 17,39 ft / 5,30 m
- Mid (50%): 13,12 ft / 4,00 m
- Quarterdeck (15%): 13,12 ft / 4,00 m
- Stern: 13,12 ft / 4,00 m
- Average freeboard: 15,06 ft / 4,59 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 113,4%
- Above water (accommodation/working, high = better): 136,7%
Waterplane Area: 19.284 Square feet or 1.792 Square metres
Displacement factor (Displacement / loading): 104%
Structure weight / hull surface area: 102 lbs/sq ft or 500 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,94
- Longitudinal: 1,64
- Overall: 1,00
Hull space for machinery, storage, compartmentation is cramped
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
Slight adjustment to my AC
San Martin, USA Armoured Cruiser laid down 1891
Displacement:
5,920 t light; 6,168 t standard; 7,400 t normal; 8,386 t full load
Dimensions: Length overall / water x beam x draught
320.00 ft / 320.00 ft x 57.25 ft x 26.00 ft (normal load)
97.54 m / 97.54 m x 17.45 m x 7.92 m
Armament:
4 - 8.00" / 203 mm guns in single mounts, 250.00lbs / 113.40kg shells, 1891 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
6 - 5.00" / 127 mm guns in single mounts, 60.00lbs / 27.22kg shells, 1891 Model
Breech loading guns in casemate mounts
on side, evenly spread
6 guns in hull casemates - Limited use in all but light seas
4 - 5.00" / 127 mm guns in single mounts, 60.00lbs / 27.22kg shells, 1891 Model
Quick firing guns in deck mounts
on side ends, evenly spread
10 - 2.36" / 60.0 mm guns in single mounts, 6.00lbs / 2.72kg shells, 1891 Model
Quick firing guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 1,660 lbs / 753 kg
Shells per gun, main battery: 100
4 - 18.0" / 457.2 mm above water torpedoes, 2 - 18.0" / 457.2 mm submerged torpedo tubes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 8.25" / 210 mm 239.50 ft / 73.00 m 8.00 ft / 2.44 m
Ends: 3.00" / 76 mm 80.50 ft / 24.54 m 6.00 ft / 1.83 m
Upper: 4.00" / 102 mm 239.50 ft / 73.00 m 6.00 ft / 1.83 m
Main Belt covers 115 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 8.00" / 203 mm 6.00" / 152 mm 8.00" / 203 mm
2nd: 2.00" / 51 mm - 4.00" / 102 mm
3rd: 2.00" / 51 mm - -
4th: 1.00" / 25 mm - -
- Armour deck: 1.00" / 25 mm, Conning tower: 8.00" / 203 mm
Machinery:
Coal fired boilers, complex reciprocating steam engines,
Direct drive, 2 shafts, 10,896 ihp / 8,128 Kw = 18.50 kts
Range 9,500nm at 10.00 kts
Bunker at max displacement = 2,218 tons (100% coal)
Complement:
398 - 518
Cost:
£0.665 million / $2.658 million
Distribution of weights at normal displacement:
Armament: 214 tons, 2.9 %
Armour: 1,699 tons, 23.0 %
- Belts: 972 tons, 13.1 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 426 tons, 5.8 %
- Armour Deck: 235 tons, 3.2 %
- Conning Tower: 65 tons, 0.9 %
Machinery: 1,981 tons, 26.8 %
Hull, fittings & equipment: 1,975 tons, 26.7 %
Fuel, ammunition & stores: 1,480 tons, 20.0 %
Miscellaneous weights: 50 tons, 0.7 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
4,860 lbs / 2,204 Kg = 19.0 x 8.0 " / 203 mm shells or 1.0 torpedoes
Stability (Unstable if below 1.00): 1.16
Metacentric height 2.9 ft / 0.9 m
Roll period: 14.2 seconds
Steadiness - As gun platform (Average = 50 %): 73 %
- Recoil effect (Restricted arc if above 1.00): 0.30
Seaboat quality (Average = 1.00): 1.31
Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.544
Length to Beam Ratio: 5.59 : 1
'Natural speed' for length: 17.89 kts
Power going to wave formation at top speed: 54 %
Trim (Max stability = 0, Max steadiness = 100): 56
Bow angle (Positive = bow angles forward): -14.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 19.00 ft / 5.79 m
- Forecastle (20 %): 19.00 ft / 5.79 m (12.00 ft / 3.66 m aft of break)
- Mid (50 %): 12.00 ft / 3.66 m
- Quarterdeck (18 %): 12.00 ft / 3.66 m
- Stern: 12.00 ft / 3.66 m
- Average freeboard: 13.40 ft / 4.08 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 113.9 %
- Above water (accommodation/working, high = better): 64.9 %
Waterplane Area: 12,711 Square feet or 1,181 Square metres
Displacement factor (Displacement / loading): 100 %
Structure weight / hull surface area: 97 lbs/sq ft or 476 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.89
- Longitudinal: 2.69
- Overall: 1.00
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
Good seaboat, rides out heavy weather easily