Triumphus class Battleship

[snip]

An update of the Imperito class, the Triumphus represents the pinnacle of pre-ABG Roman Battleships.

Ships in Class: Two
--IRS Triumphus
--IRS Insuadibilis

Triumphus, Imperial Roman Republic Battleship laid down 1901

Displacement:
   14,500 t light; 15,158 t standard; 16,173 t normal; 16,985 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (433.07 ft / 426.51 ft) x 78.74 ft x (26.25 / 27.36 ft)
   (132.00 m / 130.00 m) x 24.00 m  x (8.00 / 8.34 m)

Armament:
      4 - 13.39" / 340 mm 35.0 cal guns - 1,124.36lbs / 510.00kg shells, 70 per gun
     Breech loading guns in turret on barbette mounts, 1893 Model
     2 x Twin mounts on centreline ends, evenly spread
      4 - 8.27" / 210 mm 40.0 cal guns - 270.82lbs / 122.84kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1893 Model
     4 x Single mounts on sides, evenly spread
      10 - 5.51" / 140 mm 45.0 cal guns - 79.37lbs / 36.00kg shells, 175 per gun
     Quick firing guns in casemate mounts, 1897 Model
     10 x Single mounts on sides, evenly spread
      10 hull mounts in casemates- Limited use in heavy seas
      12 - 2.95" / 75.0 mm 45.0 cal guns - 13.23lbs / 6.00kg shells, 250 per gun
     Quick firing guns in deck mounts, 1897 Model
     12 x Single mounts on sides, evenly spread
      6 raised mounts
      Weight of broadside 6,533 lbs / 2,963 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   11.8" / 300 mm   247.38 ft / 75.40 m   18.04 ft / 5.50 m
   Ends:   4.72" / 120 mm   179.10 ft / 54.59 m   9.84 ft / 3.00 m
   Upper:   4.72" / 120 mm   247.38 ft / 75.40 m   9.02 ft / 2.75 m
     Main Belt covers 89 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15.0" / 380 mm   9.84" / 250 mm      15.0" / 380 mm
   2nd:   5.91" / 150 mm   3.94" / 100 mm      5.91" / 150 mm
   3rd:   3.94" / 100 mm   0.98" / 25 mm      3.94" / 100 mm
   4th:   0.59" / 15 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 2.95" / 75 mm
   Forecastle: 0.98" / 25 mm  Quarter deck: 0.98" / 25 mm

   - Conning towers: Forward 9.84" / 250 mm, Aft 0.00" / 0 mm

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 15,000 ihp / 11,190 Kw = 18.02 kts
   Range 5,500nm at 10.00 kts
   Bunker at max displacement = 1,827 tons (100% coal)

Complement:
   716 - 932

Cost:
   £1.295 million / $5.180 million

Distribution of weights at normal displacement:
   Armament: 1,047 tons, 6.5 %
      - Guns: 1,047 tons, 6.5 %
   Armour: 6,208 tons, 38.4 %
      - Belts: 3,254 tons, 20.1 %
      - Armament: 1,644 tons, 10.2 %
      - Armour Deck: 1,174 tons, 7.3 %
      - Conning Tower: 136 tons, 0.8 %
   Machinery: 2,308 tons, 14.3 %
   Hull, fittings & equipment: 4,671 tons, 28.9 %
   Fuel, ammunition & stores: 1,673 tons, 10.3 %
   Miscellaneous weights: 267 tons, 1.7 %
      - Hull below water: 27 tons
      - Hull above water: 100 tons
      - On freeboard deck: 100 tons
      - Above deck: 40 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     23,282 lbs / 10,561 Kg = 19.4 x 13.4 " / 340 mm shells or 2.8 torpedoes
   Stability (Unstable if below 1.00): 1.32
   Metacentric height 5.8 ft / 1.8 m
   Roll period: 13.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.51
   Seaboat quality  (Average = 1.00): 1.63

Hull form characteristics:
   Hull has low quarterdeck ,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.642 / 0.647
   Length to Beam Ratio: 5.42 : 1
   'Natural speed' for length: 20.65 kts
   Power going to wave formation at top speed: 47 %
   Trim (Max stability = 0, Max steadiness = 100): 43
   Bow angle (Positive = bow angles forward): -5.00 degrees
   Stern overhang: -4.92 ft / -1.50 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Forward deck:   30.00 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Aft deck:   28.00 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Quarter deck:   22.00 %,  9.84 ft / 3.00 m,  9.84 ft / 3.00 m
      - Average freeboard:      16.88 ft / 5.15 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 74.0 %
      - Above water (accommodation/working, high = better): 128.2 %
   Waterplane Area: 25,543 Square feet or 2,373 Square metres
   Displacement factor (Displacement / loading): 104 %
   Structure weight / hull surface area: 144 lbs/sq ft or 701 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.92
      - Longitudinal: 2.26
      - Overall: 1.00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Misc Distribution
--Below Water (27t)
----18t 12x450mm Torpedo (45 Pattern A)
----2t Additional Torpedo handling equipment
----5t Additional Pumps
--Above Water (100t)
----30t Flag Facilities
----30t Additional Troop Accommodations
----20t Improved Officer Accommodations
----20t Improved Crew Accommodations
----10t Short-Range Wireless
--On Deck (100t)
----30t Flad Facilities
----20t Admiralty Accommodations
----50t Construction Reserve
--Above Deck (40t)
----20t Improved Aquisition Structures
----10t Additional Searchlights
----10t Improved Signaling Equipment

[snip]

In 1914H1 both ships were refit with Fire Control.

Triumphus, Imperial Roman Republic Battleship laid down 1901

Displacement:
   14,500 t light; 15,158 t standard; 16,173 t normal; 16,985 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (433.07 ft / 426.51 ft) x 78.74 ft x (26.25 / 27.36 ft)
   (132.00 m / 130.00 m) x 24.00 m  x (8.00 / 8.34 m)

Armament:
      4 - 13.39" / 340 mm 35.0 cal guns - 1,124.36lbs / 510.00kg shells, 70 per gun
     Breech loading guns in turret on barbette mounts, 1893 Model
     2 x Twin mounts on centreline ends, evenly spread
      4 - 8.27" / 210 mm 40.0 cal guns - 270.82lbs / 122.84kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1893 Model
     4 x Single mounts on sides, evenly spread
      10 - 5.51" / 140 mm 45.0 cal guns - 79.37lbs / 36.00kg shells, 175 per gun
     Quick firing guns in casemate mounts, 1897 Model
     10 x Single mounts on sides, evenly spread
      10 hull mounts in casemates- Limited use in heavy seas
      12 - 2.95" / 75.0 mm 45.0 cal guns - 13.23lbs / 6.00kg shells, 250 per gun
     Quick firing guns in deck mounts, 1897 Model
     12 x Single mounts on sides, evenly spread
      6 raised mounts
      Weight of broadside 6,533 lbs / 2,963 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   11.8" / 300 mm   247.38 ft / 75.40 m   18.04 ft / 5.50 m
   Ends:   4.72" / 120 mm   179.10 ft / 54.59 m   9.84 ft / 3.00 m
   Upper:   4.72" / 120 mm   247.38 ft / 75.40 m   9.02 ft / 2.75 m
     Main Belt covers 89 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   15.0" / 380 mm   9.84" / 250 mm      15.0" / 380 mm
   2nd:   5.91" / 150 mm   3.94" / 100 mm      5.91" / 150 mm
   3rd:   3.94" / 100 mm   0.98" / 25 mm      3.94" / 100 mm
   4th:   0.59" / 15 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 2.95" / 75 mm
   Forecastle: 0.98" / 25 mm  Quarter deck: 0.98" / 25 mm

   - Conning towers: Forward 9.84" / 250 mm, Aft 0.00" / 0 mm

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 15,000 ihp / 11,190 Kw = 18.02 kts
   Range 5,500nm at 10.00 kts
   Bunker at max displacement = 1,827 tons (100% coal)

Complement:
   716 - 932

Cost:
   £1.295 million / $5.180 million

Distribution of weights at normal displacement:
   Armament: 1,047 tons, 6.5 %
      - Guns: 1,047 tons, 6.5 %
   Armour: 6,208 tons, 38.4 %
      - Belts: 3,254 tons, 20.1 %
      - Armament: 1,644 tons, 10.2 %
      - Armour Deck: 1,174 tons, 7.3 %
      - Conning Tower: 136 tons, 0.8 %
   Machinery: 2,308 tons, 14.3 %
   Hull, fittings & equipment: 4,671 tons, 28.9 %
   Fuel, ammunition & stores: 1,673 tons, 10.3 %
   Miscellaneous weights: 267 tons, 1.7 %
      - Hull below water: 27 tons
      - Hull above water: 100 tons
      - On freeboard deck: 100 tons
      - Above deck: 40 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     23,282 lbs / 10,561 Kg = 19.4 x 13.4 " / 340 mm shells or 2.8 torpedoes
   Stability (Unstable if below 1.00): 1.32
   Metacentric height 5.8 ft / 1.8 m
   Roll period: 13.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.51
   Seaboat quality  (Average = 1.00): 1.63

Hull form characteristics:
   Hull has low quarterdeck ,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.642 / 0.647
   Length to Beam Ratio: 5.42 : 1
   'Natural speed' for length: 20.65 kts
   Power going to wave formation at top speed: 47 %
   Trim (Max stability = 0, Max steadiness = 100): 43
   Bow angle (Positive = bow angles forward): -5.00 degrees
   Stern overhang: -4.92 ft / -1.50 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Forward deck:   30.00 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Aft deck:   28.00 %,  18.86 ft / 5.75 m,  18.86 ft / 5.75 m
      - Quarter deck:   22.00 %,  9.84 ft / 3.00 m,  9.84 ft / 3.00 m
      - Average freeboard:      16.88 ft / 5.15 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 74.0 %
      - Above water (accommodation/working, high = better): 128.2 %
   Waterplane Area: 25,543 Square feet or 2,373 Square metres
   Displacement factor (Displacement / loading): 104 %
   Structure weight / hull surface area: 144 lbs/sq ft or 701 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.92
      - Longitudinal: 2.26
      - Overall: 1.00
   Excellent machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Misc Distribution
--Below Water (27t)
----18t 12x450mm Torpedo (45 Pattern A)
----2t Additional Torpedo handling equipment
----5t Additional Pumps
--Above Water (100t)
----30t Flag Facilities
----35t 1912 Fire Control
----20t Improved Officer Accommodations
----15t Improved Crew Accommodations
----10t Short-Range Wireless
--On Deck (100t)
----30t Flag Facilities
----70t 1912 Fire Control
--Above Deck (40t)
----20t Improved Aquisition Structures
----10t Additional Searchlights
----10t Improved Signaling Equipment

[snip]

In 1927H2, both ships of this class were scapped; Triumphus due to deterioration related to battle damage from Ironclad Bay, Insuadibilis after one of her engines self-destructed.