Omani Ships

[P3D]

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

[P3D]

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

[P3D]

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

[Borys]

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

[P3D]

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.

[Ithekro]

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.

[P3D]

Why would a VTE engine that has three times the moving parts and ten times the vibration be  more reliable than a steam turbine?

[Valles]

Coarser minimum tolerances. Also, it's a more mature, better understood technology.

[Korpen]

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.