An update of the Imperito class, the Triumphus represents the pinnacle of pre-ABG Roman Battleships.
Ships in Class: Two
--IRS Triumphus
--IRS Insuadibilis
QuoteTriumphus, 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
In 1914H1 both ships were refit with Fire Control.
QuoteTriumphus, 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
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.