WesWorld

Greece has elected to refit the 1923 scout cruisers. The refit includes new DP turrets and guns, new engine and boilers. Power has been boosted slightly pushing speed from 29kts to 30.3 knts while the CT, 3" aa guns and triple banks of torpedo tubes have been landed and two new quad banks of tubes added.

It is hoped that these ships can fill an escort role with a useful DP armament.



Original Design


RHN C-8 Eurybiades Class, Greek Light Cruiser laid down 1923 (Engine 1934)

Displacement:
4,529 t light; 4,670 t standard; 4,926 t normal; 5,131 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(430.00 ft / 430.00 ft) x 47.00 ft x (16.50 / 17.02 ft)
(131.06 m / 131.06 m) x 14.33 m x (5.03 / 5.19 m)

Armament:
8 - 5.00" / 127 mm 40.0 cal guns - 59.90lbs / 27.17kg shells, 150 per gun
Breech loading guns in turret on barbette mounts , 1934 Model
4 x Twin mounts on centreline ends, evenly spread
12 - 1.57" / 40.0 mm 45.0 cal guns - 1.97lbs / 0.89kg shells, 150 per gun
Breech loading guns in deck mounts , 1934 Model
6 x twin mounts on sides, evenly spread
12 - 0.79" / 20.0 mm 45.0 cal guns - 0.25lbs / 0.11kg shells, 150 per gun
Breech loading guns in deck mounts , 1923 Model
6 x twin mounts on sides, evenly spread
Weight of broadside 506 lbs / 506 kg
8 - 21.0" / 533 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.00" / 102 mm 300.00 ft / 91.44 m 8.50 ft / 2.59 m
Ends: Unarmoured
Main Belt covers 107 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm 1.00" / 25 mm 1.00" / 25 mm

- Armour deck: 2.50" / 64 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 51,392 shp / 38,338 Kw = 30.30 kts
Range 5,000nm at 12.00 kts
Bunker at max displacement = 461 tons

Complement:
293 - 382

Cost:
£1.187 million / $4.747 million

Distribution of weights at normal displacement:
Armament: 129 tons, 2.6 %
Armour: 1,120 tons, 22.7 %
- Belts: 423 tons, 8.6 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 64 tons, 1.3 %
- Armour Deck: 633 tons, 12.8 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 1,478 tons, 30.0 %
Hull, fittings & equipment: 1,835 tons, 37.3 %
Fuel, ammunition & stores: 397 tons, 8.1 %
Miscellaneous weights: 45 tons, 0.9 %
- Hull below water: 45 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
5,815 lbs / 2,638 Kg = 93.0 x 5.0 " / 127 mm shells or 1.0 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 2.3 ft / 0.7 m
Roll period: 13.1 seconds
Steadiness - As gun platform (Average = 50 %): 56 %
- Recoil effect (Restricted arc if above 1.00): 0.28
Seaboat quality (Average = 1.00): 1.12

Hull form characteristics:
Hull has a flush deck,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.517 / 0.522
Length to Beam Ratio: 9.15 : 1
'Natural speed' for length: 20.74 kts
Power going to wave formation at top speed: 63 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 20.50 ft / 6.25 m, 19.50 ft / 5.94 m
- Forward deck: 30.00 %, 19.50 ft / 5.94 m, 18.50 ft / 5.64 m
- Aft deck: 35.00 %, 18.50 ft / 5.64 m, 17.00 ft / 5.18 m
- Quarter deck: 15.00 %, 17.00 ft / 5.18 m, 15.50 ft / 4.72 m
- Average freeboard: 18.33 ft / 5.59 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 106.8 %
- Above water (accommodation/working, high = better): 118.5 %
Waterplane Area: 13,677 Square feet or 1,271 Square metres
Displacement factor (Displacement / loading): 109 %
Structure weight / hull surface area: 75 lbs/sq ft or 367 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.91
- Longitudinal: 2.35
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is adequate

Nice diagrams.

I expect you've already got well considered answers to these, but hey, may as well ask :

I'm unclear why you are moving the boats forward and striking the forward TT tubes. While you install quads aft,there does not seem to be any gain.

Also, on the original you have some deck guns bracketing the forward funnel, and they are stricken on the rebuild. Why not replace them with 40mms like you did on the aft superstructure?

Nice one!

Question: Isn´t her main gun armor a bit weak? Even for DP-mounts that shouldn´t be too heavy?

though she'll run out of 40mm and 20mm ammo in 5 minutes or so. Or less.

Quoted

though she'll run out of 40mm and 20mm ammo in 5 minutes or so. Or less.

Good point, at least I've got some misc weight.

Quoted

Question: Isn´t her main gun armor a bit weak? Even for DP-mounts that shouldn´t be too heavy?

They are small ships and so are not very strong anyway, but they are tough for their size and will take some battering. The advantage is that there are nine of them.

Quoted

I'm unclear why you are moving the boats forward and striking the forward TT tubes. While you install quads aft,there does not seem to be any gain.

Also, on the original you have some deck guns bracketing the forward funnel, and they are stricken on the rebuild. Why not replace them with 40mms like you did on the aft superstructure?

The original TT were triples and had to be landed for weight. The new TT are the same as on new Destroyers. I tried to have enough room around them to load and work them. Greece is also seeing less need for torpedos on these ships so the battery was reduced.

I pulled the deck mount as it would get rather wet in that spot.

Cheers,

Still, those 25mm plates offer splinter protection at best. They won´t stop shells fired from 100mm guns and larger. So while these ships hull is a tough nut to crach I foresee them disarmed in a fight pretty quick.... Well, if they ever see action, that is. :o)

Hey, don't look at me!

Quoted

Still, those 25mm plates offer splinter protection at best. They won´t stop shells fired from 100mm guns and larger. So while these ships hull is a tough nut to crach I foresee them disarmed in a fight pretty quick.... Well, if they ever see action, that is. :o)

Agree it is mainly splinter protection but these are oversized destroyers rather than something to fight other cruisers in daylight. Disabling the armament is a small chance of a hit but the hull is well protected for their size. Perhaps I should game it.

Cheers,

Yeah, perhaps you should game it.....