This sloop will eat up two year's military funding available. Build from Orange-supplied materials, a 'fat' ship, to fit in the available facilities. Top quality turbines are unavailable due to Orange export control restrictions. But the Sultan loves his navy, so they will be built.
Sultan Al Busaid, Omani sloop laid down 1912 (Engine 09)
Displacement:
1,300 t light; 1,352 t standard; 1,577 t normal; 1,757 t full load
Dimensions: Length overall / water x beam x draught
229.00 ft / 229.00 ft x 33.00 ft x 12.00 ft (normal load)
69.80 m / 69.80 m x 10.06 m x 3.66 m
Armament:
2 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1909 Model
Breech loading guns in deck mounts with hoists
on centreline ends, evenly spread
2 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1909 Model
Breech loading guns in deck mounts with hoists
on centreline ends, evenly spread, all raised mounts
2 - 0.40" / 10.2 mm guns in single mounts, 0.03lbs / 0.01kg shells, 1909 Model
Quick firing guns in deck mounts
on side, all amidships
Weight of broadside 243 lbs / 110 kg
Shells per gun, main battery: 150
4 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 1.00" / 25 mm 170.00 ft / 51.82 m 10.00 ft / 3.05 m
Ends: Unarmoured
Main Belt covers 114 % of normal length
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm - -
2nd: 1.00" / 25 mm - -
- Armour deck: 1.00" / 25 mm, Conning tower: 2.00" / 51 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 9,997 shp / 7,458 Kw = 22.00 kts
Range 800nm at 22.00 kts
Bunker at max displacement = 405 tons
Complement:
124 - 162
Cost:
£0.135 million / $0.539 million
Distribution of weights at normal displacement:
Armament: 30 tons, 1.9 %
Armour: 191 tons, 12.1 %
- Belts: 72 tons, 4.6 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 10 tons, 0.6 %
- Armour Deck: 103 tons, 6.5 %
- Conning Tower: 6 tons, 0.4 %
Machinery: 454 tons, 28.8 %
Hull, fittings & equipment: 569 tons, 36.1 %
Fuel, ammunition & stores: 277 tons, 17.6 %
Miscellaneous weights: 55 tons, 3.5 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,664 lbs / 755 Kg = 15.4 x 6.0 " / 152 mm shells or 0.6 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 1.3 ft / 0.4 m
Roll period: 12.3 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.51
Seaboat quality (Average = 1.00): 1.28
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.609
Length to Beam Ratio: 6.94 : 1
'Natural speed' for length: 15.13 kts
Power going to wave formation at top speed: 68 %
Trim (Max stability = 0, Max steadiness = 100): 47
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: 19.00 ft / 5.79 m
- Forecastle (20 %): 20.00 ft / 6.10 m
- Mid (40 %): 20.00 ft / 6.10 m (12.00 ft / 3.66 m aft of break)
- Quarterdeck (15 %): 12.00 ft / 3.66 m
- Stern: 12.00 ft / 3.66 m
- Average freeboard: 15.12 ft / 4.61 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 112.3 %
- Above water (accommodation/working, high = better): 78.6 %
Waterplane Area: 5,572 Square feet or 518 Square metres
Displacement factor (Displacement / loading): 113 %
Structure weight / hull surface area: 52 lbs/sq ft or 255 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.82
- Longitudinal: 5.91
- 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
Oman can build a destroyer per year from Orange steel. Selling the two old sloops for scrapping after the new one is in service would finance this destroyer partially.
Omani Destroyer laid down 1913 (engine 1909)
Displacement:
640 t light; 664 t standard; 791 t normal; 893 t full load
Dimensions: Length overall / water x beam x draught
229.00 ft / 229.00 ft x 23.00 ft x 10.00 ft (normal load)
69.80 m / 69.80 m x 7.01 m x 3.05 m
Armament:
3 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1909 Model
Quick firing guns in deck mounts
on centreline ends, majority aft, 1 raised mount aft
4 - 0.40" / 10.2 mm guns in single mounts, 0.03lbs / 0.01kg shells, 1909 Model
Machine guns in deck mounts
on centreline, all amidships
Weight of broadside 96 lbs / 44 kg
Shells per gun, main battery: 150
4 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.50" / 13 mm - -
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 13,950 shp / 10,407 Kw = 27.00 kts
Range 400nm at 27.00 kts
Bunker at max displacement = 229 tons
Complement:
73 - 96
Cost:
£0.088 million / $0.350 million
Distribution of weights at normal displacement:
Armament: 12 tons, 1.5 %
Armour: 3 tons, 0.4 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 3 tons, 0.4 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 393 tons, 49.7 %
Hull, fittings & equipment: 204 tons, 25.8 %
Fuel, ammunition & stores: 151 tons, 19.1 %
Miscellaneous weights: 27 tons, 3.4 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
221 lbs / 100 Kg = 6.9 x 4.0 " / 102 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.25
Metacentric height 0.8 ft / 0.3 m
Roll period: 10.6 seconds
Steadiness - As gun platform (Average = 50 %): 61 %
- Recoil effect (Restricted arc if above 1.00): 0.30
Seaboat quality (Average = 1.00): 1.17
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.526
Length to Beam Ratio: 9.96 : 1
'Natural speed' for length: 15.13 kts
Power going to wave formation at top speed: 71 %
Trim (Max stability = 0, Max steadiness = 100): 52
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: 18.00 ft / 5.49 m
- Forecastle (20 %): 17.50 ft / 5.33 m
- Mid (35 %): 17.50 ft / 5.33 m (10.00 ft / 3.05 m aft of break)
- Quarterdeck (15 %): 10.00 ft / 3.05 m
- Stern: 10.00 ft / 3.05 m
- Average freeboard: 12.67 ft / 3.86 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 175.9 %
- Above water (accommodation/working, high = better): 52.4 %
Waterplane Area: 3,593 Square feet or 334 Square metres
Displacement factor (Displacement / loading): 57 %
Structure weight / hull surface area: 23 lbs/sq ft or 113 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 3.97
- Overall: 0.61
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Omani patrol boat laid down 1912
Two 460HP diesels are driving two shafts. If it fits in the civilian rules, cost is
$0.12/0.04BP, otherwise the full $0.16. Affordable either way.
Displacement:
160 t light; 165 t standard; 191 t normal; 211 t full load
Dimensions: Length overall / water x beam x draught
130.00 ft / 130.00 ft x 18.00 ft x 5.00 ft (normal load)
39.62 m / 39.62 m x 5.49 m x 1.52 m
Armament:
1 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1908 Model
Breech loading gun in deck mount
on centreline forward
2 - 0.40" / 10.2 mm guns in single mounts, 0.03lbs / 0.01kg shells, 1908 Model
Breech loading guns in deck mounts
on centreline, evenly spread, 1 raised mount
Weight of broadside 14 lbs / 6 kg
Shells per gun, main battery: 200
Machinery:
Diesel Internal combustion motors,
Direct drive, 2 shafts, 912 shp / 680 Kw = 16.00 kts
Range 2,000nm at 12.00 kts
Bunker at max displacement = 46 tons
Complement:
25 - 33
Cost:
£0.012 million / $0.048 million
Distribution of weights at normal displacement:
Armament: 2 tons, 0.9 %
Machinery: 36 tons, 19.0 %
Hull, fittings & equipment: 85 tons, 44.6 %
Fuel, ammunition & stores: 31 tons, 16.2 %
Miscellaneous weights: 37 tons, 19.4 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
362 lbs / 164 Kg = 26.8 x 3.0 " / 76 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.03
Metacentric height 0.4 ft / 0.1 m
Roll period: 11.9 seconds
Steadiness - As gun platform (Average = 50 %): 80 %
- Recoil effect (Restricted arc if above 1.00): 0.15
Seaboat quality (Average = 1.00): 2.00
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.571
Length to Beam Ratio: 7.22 : 1
'Natural speed' for length: 11.40 kts
Power going to wave formation at top speed: 63 %
Trim (Max stability = 0, Max steadiness = 100): 40
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: 14.00 ft / 4.27 m
- Forecastle (20 %): 14.00 ft / 4.27 m
- Mid (44 %): 14.00 ft / 4.27 m (7.00 ft / 2.13 m aft of break)
- Quarterdeck (15 %): 7.00 ft / 2.13 m
- Stern: 7.00 ft / 2.13 m
- Average freeboard: 10.08 ft / 3.07 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 90.4 %
- Above water (accommodation/working, high = better): 121.7 %
Waterplane Area: 1,666 Square feet or 155 Square metres
Displacement factor (Displacement / loading): 155 %
Structure weight / hull surface area: 22 lbs/sq ft or 109 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.77
- Longitudinal: 10.71
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
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
Ahoj!
I think the hoists for the 3" guns canbe dispensed with, unless it is "gilting" of the navy's flagship.
What's the range at a sensible speed of 10-12 knots?
Would the locals cope with turbines, and oil fired at that? Wouldn't a coal fired VTE be more in order?
Of course, the Aden base can fix it :)
Borys
I assumed there was a naval base in Muscat and a harbor - otherwise it would've been impossible to maintain the fleet they had.
Turbines are IMO easier to maintain than large VTEs. About oil, it can be imported from just across the Gulf. Unlike coal.
Actually wouldn't a VTE engine be easier to maintain at this point since there would be more trained engineers on that type of engine? Also wouldn't the VTE engine still be more reliable for foreign sales. at least on the sloop. You'll have a hard time finding a destroyer design that isn't going to turbines and oil in 1911.
Why would a VTE engine that has three times the moving parts and ten times the vibration be more reliable than a steam turbine?
Coarser minimum tolerances. Also, it's a more mature, better understood technology.
I have a feeling the difference could be summed up as:
VTE:breaks more often, but smaller breaks that is easier to fix
Turbines: Breaks seldome, but when they break, they break.