Aviso Saranda Class

[Jefgte]

 

For Epire Fleet, an Aviso with 4 MTB102
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Main characs :
- in service : from 1930 to 1937, 4 ships,
- D = 3000 tstd,
- S = 25-30 nds, correct range,
- propulsion : turbines or diesels ?
- Armament : 4x140, 2 DP >100 mm, 4 AA x 40mm, no TLT.
Specifications  : 600 marines, & or 100 mines, & or 4 MTB 102.
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[size=12]Saranda, Epire Aviso laid down 1930


Displacement:

2 886 t light; 3 000 t standard; 3 556 t normal; 4 001 t full load

Dimensions: Length overall / water x beam x draught

450.73 ft / 446.19 ft x 49.87 ft x 12.60 ft (normal load)

137.38 m / 136.00 m x 15.20 m x 3.84 m

Armament:

4 - 5.51" / 140 mm guns (2x2 guns), 83.72lbs / 37.97kg shells, 1930 Model

Breech loading guns in turrets (on barbettes)

on centreline, all forward, 1 raised mount - superfiring

4 - 3.94" / 100 mm guns (2x2 guns), 30.51lbs / 13.84kg shells, 1930 Model

Anti-aircraft guns in deck mounts

on centreline ends, evenly spread, 1 raised mount - superfiring

8 - 1.57" / 40.0 mm guns in single mounts, 1.95lbs / 0.88kg shells, 1930 Model

Anti-aircraft guns in deck mounts

on side, evenly spread, 4 raised mounts

Weight of broadside 473 lbs / 214 kg

Shells per gun, main battery: 150

Armour:

- Belts: Width (max) Length (avg) Height (avg)

Main: 1.18" / 30 mm 239.50 ft / 73.00 m 9.45 ft / 2.88 m

Ends: 1.18" / 30 mm 183.73 ft / 56.00 m 8.01 ft / 2.44 m

22.97 ft / 7.00 m Unarmoured ends

Main Belt covers 83 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)

Main: 1.18" / 30 mm 0.39" / 10 mm 1.18" / 30 mm

- Armour deck: 0.87" / 22 mm

Machinery:

Diesel Internal combustion motors,

Geared drive, 2 shafts, 18 000 shp / 13 428 Kw = 25.72 kts

Range 10 000nm at 14.00 kts

Bunker at max displacement = 1 001 tons

Complement:

229 - 299

Cost:

£0.949 million / $3.797 million

Distribution of weights at normal displacement:

Armament: 59 tons, 1.7 %

Armour: 447 tons, 12.6 %

- Belts: 180 tons, 5.1 %

- Torpedo bulkhead: 0 tons, 0.0 %

- Armament: 31 tons, 0.9 %

- Armour Deck: 235 tons, 6.6 %

- Conning Tower: 0 tons, 0.0 %

Machinery: 545 tons, 15.3 %

Hull, fittings & equipment: 1 575 tons, 44.3 %

Fuel, ammunition & stores: 670 tons, 18.8 %

Miscellaneous weights: 260 tons, 7.3 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship):

7 852 lbs / 3 562 Kg = 93.8 x 5.5 " / 140 mm shells or 1.7 torpedoes

Stability (Unstable if below 1.00): 1.22

Metacentric height 2.5 ft / 0.8 m

Roll period: 13.2 seconds

Steadiness - As gun platform (Average = 50 %): 70 %

- Recoil effect (Restricted arc if above 1.00): 0.24

Seaboat quality (Average = 1.00): 1.19

Hull form characteristics:

Hull has a flush deck

and transom stern

Block coefficient: 0.444

Length to Beam Ratio: 8.95 : 1

'Natural speed' for length: 24.50 kts

Power going to wave formation at speed: 50 %

Trim (Max stability = 0, Max steadiness = 100): 59

Bow angle (Positive = bow angles forward): 12.00 degrees

Stern overhang: 0.00 ft / 0.00 m

Freeboard (% = measuring location as a percentage of overall length):

- Stem: 21.33 ft / 6.50 m

- Forecastle (20 %): 18.04 ft / 5.50 m

- Mid (50 %): 14.76 ft / 4.50 m

- Quarterdeck (31 %): 14.76 ft / 4.50 m

- Stern: 0.00 ft / 0.00 m

- Average freeboard: 13.89 ft / 4.23 m

Ship tends to be wet forward

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 71.4 %

- Above water (accommodation/working, high = better): 192.4 %

Waterplane Area: 14 670 Square feet or 1 363 Square metres

Displacement factor (Displacement / loading): 157 %

Structure weight / hull surface area: 76 lbs/sq ft or 370 Kg/sq metre

Hull strength (Relative):

- Cross-sectional: 0.98

- Longitudinal: 1.22

- Overall: 1.00

Hull space for machinery, storage, compartmentation is excellent

Room for accommodation and workspaces is excellent

Ship has slow, easy roll, a good, steady gun platform[/size]



light





internal





All







Jef 

[Jefgte]

 

Slight improvements:

-- better partitioning from the bow to A turret.
-- Removal of the weakness of the structure at section 120
-- Replacing turrets on barbette by light turrets & hoists.
The weight saving can be achieved to uniform height belt on the hull and increase the thickness of the armoured deck.
-- Capacity increased rear for the stores (section 86 to 120)
-- Rail facilities for handling the MTB or mines & representation of the aft door.
-- Positioning of the catapult (option)






Jef   

[Jefgte]

 


Update

Installation of the cata & a floatplane
I switch 2 MTB & draw "minen".




Jef