WesWorld

First, apologies to any Oromo speakers for that bad translation of "To Sea My Brother." If that gave it away, this will be where some designs for the expanding East African State Navy will be tossed about. The current EAS Navy is sort of a rustbucket affair, its time for that to change. Designs below.

A possible reconstruction of the current flagship of the EAN, the Ras Dejen.

Ras Dejen, East African Cruiser laid down 1928 (Engine 1945)

Displacement:
5,270 t light; 5,651 t standard; 7,101 t normal; 8,261 t full load

Dimensions: Length overall / water x beam x draught
505.25 ft / 492.13 ft x 55.77 ft x 19.69 ft (normal load)
154.00 m / 150.00 m x 17.00 m x 6.00 m

Armament:
5 - 5.98" / 152 mm guns in single mounts, 99.21lbs / 45.00kg shells, 1945 Model
Dual purpose guns in deck mounts with hoists
on centreline, evenly spread, 2 raised mounts
8 - 2.99" / 76.0 mm guns (4x2 guns), 13.39lbs / 6.08kg shells, 1945 Model
Automatic rapid fire guns in deck mounts with hoists
on side, all amidships
24 - 1.46" / 37.0 mm guns (12x2 guns), 1.55lbs / 0.70kg shells, 1928 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 4 raised mounts
16 - 0.98" / 25.0 mm guns (8x2 guns), 0.48lbs / 0.22kg shells, 1928 Model
Breech loading guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 648 lbs / 294 kg
Shells per gun, main battery: 600
8 - 23.6" / 600 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2.76" / 70 mm 319.88 ft / 97.50 m 8.20 ft / 2.50 m
Ends: Unarmoured
Main Belt covers 100 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.97" / 50 mm 1.18" / 30 mm 0.79" / 20 mm
2nd: 1.18" / 30 mm 0.79" / 20 mm 0.79" / 20 mm
3rd: 0.39" / 10 mm 0.39" / 10 mm -
4th: 0.39" / 10 mm - -

- Armour deck: 0.98" / 25 mm, Conning tower: 2.76" / 70 mm

Machinery:
Oil fired boilers, steam turbines plus diesel motors,
Electric motors, 2 shafts, 71,600 shp / 53,414 Kw = 31.75 kts
Range 8,030nm at 20.00 kts
Bunker at max displacement = 2,610 tons

Complement:
386 - 502

Cost:
£1.955 million / $7.820 million

Distribution of weights at normal displacement:
Armament: 89 tons, 1.2 %
Armour: 707 tons, 10.0 %
- Belts: 304 tons, 4.3 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 60 tons, 0.8 %
- Armour Deck: 321 tons, 4.5 %
- Conning Tower: 22 tons, 0.3 %
Machinery: 1,808 tons, 25.5 %
Hull, fittings & equipment: 2,527 tons, 35.6 %
Fuel, ammunition & stores: 1,831 tons, 25.8 %
Miscellaneous weights: 140 tons, 2.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
9,079 lbs / 4,118 Kg = 84.7 x 6.0 " / 152 mm shells or 1.4 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 2.9 ft / 0.9 m
Roll period: 13.8 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.22
Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
Hull has rise forward of midbreak, raised quarterdeck
Block coefficient: 0.460
Length to Beam Ratio: 8.82 : 1
'Natural speed' for length: 22.18 kts
Power going to wave formation at top speed: 61 %
Trim (Max stability = 0, Max steadiness = 100): 69
Bow angle (Positive = bow angles forward): 21.80 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 24.61 ft / 7.50 m
- Forecastle (20 %): 21.33 ft / 6.50 m
- Mid (60 %): 21.33 ft / 6.50 m (13.12 ft / 4.00 m aft of break)
- Quarterdeck (15 %): 14.76 ft / 4.50 m (13.12 ft / 4.00 m before break)
- Stern: 14.76 ft / 4.50 m
- Average freeboard: 18.55 ft / 5.66 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 97.6 %
- Above water (accommodation/working, high = better): 118.1 %
Waterplane Area: 17,654 Square feet or 1,640 Square metres
Displacement factor (Displacement / loading): 137 %
Structure weight / hull surface area: 87 lbs/sq ft or 425 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.75
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform

A reconstruction of the CDS's Asmara and Massawwa


Asmara, East African Coastal Defence Ship laid down 1925 (Engine 1945)

Displacement:
1,941 t light; 2,053 t standard; 2,227 t normal; 2,367 t full load

Dimensions: Length overall / water x beam x draught
242.77 ft / 229.66 ft x 45.93 ft x 11.38 ft (normal load)
74.00 m / 70.00 m x 14.00 m x 3.47 m

Armament:
4 - 7.99" / 203 mm guns (2x2 guns), 276.24lbs / 125.30kg shells, 1925 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
4 - 2.99" / 76.0 mm guns in single mounts, 14.26lbs / 6.47kg shells, 1945 Model
Automatic rapid fire guns in deck mounts with hoists
on side, all amidships
8 - 1.46" / 37.0 mm guns in single mounts, 1.55lbs / 0.70kg shells, 1945 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
16 - 0.79" / 20.0 mm guns (1x16 guns), 0.24lbs / 0.11kg shells, 1925 Model
Breech loading guns in deck mount
on side
Weight of broadside 1,178 lbs / 534 kg
Shells per gun, main battery: 100
5 - 23.6" / 600 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.94" / 100 mm 110.24 ft / 33.60 m 8.14 ft / 2.48 m
Ends: 0.79" / 20 mm 119.39 ft / 36.39 m 8.14 ft / 2.48 m
Upper: 0.79" / 20 mm 110.24 ft / 33.60 m 8.01 ft / 2.44 m
Main Belt covers 74 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.94" / 100 mm 2.76" / 70 mm 2.76" / 70 mm
2nd: 1.18" / 30 mm 0.79" / 20 mm 0.79" / 20 mm
3rd: 0.39" / 10 mm 0.39" / 10 mm -
4th: 0.39" / 10 mm - -

- Armour deck: 1.57" / 40 mm, Conning tower: 2.76" / 70 mm

Machinery:
Diesel Internal combustion generators,
Electric motors, 2 shafts, 5,800 shp / 4,327 Kw = 18.00 kts
Range 3,000nm at 15.00 kts
Bunker at max displacement = 314 tons

Complement:
161 - 210

Cost:
£0.668 million / $2.672 million

Distribution of weights at normal displacement:
Armament: 138 tons, 6.2 %
Armour: 628 tons, 28.2 %
- Belts: 238 tons, 10.7 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 145 tons, 6.5 %
- Armour Deck: 235 tons, 10.6 %
- Conning Tower: 10 tons, 0.5 %
Machinery: 146 tons, 6.6 %
Hull, fittings & equipment: 1,004 tons, 45.1 %
Fuel, ammunition & stores: 286 tons, 12.9 %
Miscellaneous weights: 25 tons, 1.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
4,106 lbs / 1,862 Kg = 16.1 x 8.0 " / 203 mm shells or 1.3 torpedoes
Stability (Unstable if below 1.00): 1.13
Metacentric height 1.9 ft / 0.6 m
Roll period: 13.8 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.71
Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.649
Length to Beam Ratio: 5.00 : 1
'Natural speed' for length: 15.15 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 49
Bow angle (Positive = bow angles forward): 23.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 15.42 ft / 4.70 m
- Forecastle (26 %): 13.78 ft / 4.20 m
- Mid (50 %): 13.78 ft / 4.20 m
- Quarterdeck (26 %): 13.78 ft / 4.20 m
- Stern: 13.78 ft / 4.20 m
- Average freeboard: 13.95 ft / 4.25 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 69.6 %
- Above water (accommodation/working, high = better): 77.2 %
Waterplane Area: 8,074 Square feet or 750 Square metres
Displacement factor (Displacement / loading): 109 %
Structure weight / hull surface area: 87 lbs/sq ft or 426 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.86
- Longitudinal: 3.85
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is cramped

What is this coast defense ship doing with torpedoes? That's an odd design choice.

Quoted from "Brockpaine"

What is this coast defense ship doing with torpedoes? That's an odd design choice.

The original mounted torpedoes, so Im assuming the goal of such was to allow for disruption of larger ships in the semi-confined waters in the Red Sea and specifically the area around Birim Island where the Red Sea meets the Gulf of Aden. I can see how a leader in a third-rate navy would want to maximize the firepower of every ship, hence the inclusion of the quintuple 600mm tube on the fantail. They are weapons of last resort to try and disable a larger ship. Note OOC I dont think this works on a 18knt ship, so this is a IC decision.

Quoted from "snip"

Quoted from "Brockpaine"

What is this coast defense ship doing with torpedoes? That's an odd design choice.

The original mounted torpedoes, so Im assuming the goal of such was to allow for disruption of larger ships in the semi-confined waters in the Red Sea and specifically the area around Birim Island where the Red Sea meets the Gulf of Aden. I can see how a leader in a third-rate navy would want to maximize the firepower of every ship, hence the inclusion of the quintuple 600mm tube on the fantail. They are weapons of last resort to try and disable a larger ship. Note OOC I dont think this works on a 18knt ship, so this is a IC decision.

I can sort of see this in what essentially was a Great War vintage vessel - torpedoes were stuck on everything. But if the ships is to be refitted to this extent, I would have expected them to be removed. One hit aft which detonates the torpedoes will blow the entire stern off. The risk is bad enough on a destroyer, which is much more maneuverable. With craft like these, making 18 knots at best, it is a dangerous combination.

As I said, OOC I dont like it, but its a interesting IC thing. Thinking "Well, the EAS likes torpedoes on everything" makes it different then what I have done with the Italian Navy, which is cut down on the number of torps,