Thanks Blackbuck
.
Now, for the moment I've been waiting for *drumroll*
It's the Denton Navy's first 'battleship,' the DNS St. Catherine BM-1. While it's technically a monitor, it is still considered a 'battleship.' It is designated either way, BM-1 or BB-1.
Laid Down: August 9th, 1881
Launched: August 21st, 1883
Overall, it is similar to the BM-2 Amphitrite class Monitors, but has a shallower draft and wider beam.
Oh, and no, it wasn't built in Denton. It was built in Delaware by William Cramp & Sons, and then it was transported to Denton (I almost typed in 'via the Panama Canal'...).
A quick style note, the ends of the main structure in the middle is not angled, but actually curves from the turrets towards the middle. With the shading I did, does it look like that?
DNS St. Catherine, Denton Breastwork Monitor laid down 1881
Displacement:
3,200 t light; 3,428 t standard; 3,998 t normal; 4,453 t full load
Dimensions: Length overall / water x beam x draught
262.00 ft / 258.00 ft x 58.25 ft x 14.00 ft (normal load)
79.86 m / 78.64 m x 17.75 m x 4.27 m
Armament:
4 - 10.00" / 254 mm guns (2x2 guns), 432.50lbs / 196.18kg shells, 1881 Model
Breech loading guns in Coles/Ericsson turrets
on centreline ends, evenly spread
6 - 2.25" / 57.2 mm guns in single mounts, 6.00lbs / 2.72kg shells, 1881 Model
Quick firing guns in deck mounts
on side, all amidships, all raised mounts - superfiring
4 - 0.45" / 11.4 mm guns in single mounts, 0.04lbs / 0.02kg shells, 1881 Model
Machine guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 1,766 lbs / 801 kg
Shells per gun, main battery: 150
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 9.00" / 229 mm 142.00 ft / 43.28 m 6.00 ft / 1.83 m
Ends: 5.00" / 127 mm 116.00 ft / 35.36 m 6.00 ft / 1.83 m
Main Belt covers 85 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 10.0" / 254 mm 4.00" / 102 mm -
- Armour deck: 1.00" / 25 mm, Conning tower: 6.00" / 152 mm
Machinery:
Coal fired boilers, simple reciprocating steam engines,
Direct drive, 2 shafts, 2,292 ihp / 1,710 Kw = 12.80 kts
Range 3,400nm at 11.00 kts
Bunker at max displacement = 1,025 tons (100% coal)
Complement:
250 - 326
Cost:
£0.362 million / $1.449 million
Distribution of weights at normal displacement:
Armament: 220 tons, 5.5 %
Armour: 989 tons, 24.7 %
- Belts: 501 tons, 12.5 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 239 tons, 6.0 %
- Armour Deck: 216 tons, 5.4 %
- Conning Tower: 33 tons, 0.8 %
Machinery: 467 tons, 11.7 %
Hull, fittings & equipment: 1,524 tons, 38.1 %
Fuel, ammunition & stores: 798 tons, 20.0 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
3,527 lbs / 1,600 Kg = 8.2 x 10.0 " / 254 mm shells or 1.1 torpedoes
Stability (Unstable if below 1.00): 1.53
Metacentric height 4.6 ft / 1.4 m
Roll period: 11.4 seconds
Steadiness - As gun platform (Average = 50 %): 29 %
- Recoil effect (Restricted arc if above 1.00): 0.08
Seaboat quality (Average = 1.00): 0.33
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.665
Length to Beam Ratio: 4.43 : 1
'Natural speed' for length: 16.06 kts
Power going to wave formation at top speed: 43 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 4.00 ft / 1.22 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 4.00 ft / 1.22 m
- Forecastle (20 %): 4.00 ft / 1.22 m
- Mid (50 %): 4.00 ft / 1.22 m
- Quarterdeck (15 %): 4.00 ft / 1.22 m
- Stern: 4.00 ft / 1.22 m
- Average freeboard: 4.00 ft / 1.22 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 80.8 %
- Above water (accommodation/working, high = better): 35.6 %
Waterplane Area: 11,672 Square feet or 1,084 Square metres
Displacement factor (Displacement / loading): 109 %
Structure weight / hull surface area: 114 lbs/sq ft or 558 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.03
- Longitudinal: 1.00
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is extremely poor
Ship has quick, lively roll, not a steady gun platform
Caution: Lacks seaworthiness - very limited seakeeping ability
Note: In the SS report it lists the ship as having 250 - 326 crew, however, the actual number would be around 160-170.
If you see any other glaring issues with the SS report, let me know.
-EZ