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[size=3]RHN L-1 (ex-C-17) Leon Class, Greek Flotilla Leader laid down 1925[/size]
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L-1 (ex-C-17) Leon Laid Down 1-Jan-25 Entered service 24/Jun/26
L-2 (ex-C-18) Panthir Laid Down 1-Oct-25 Entered service 24/Mar/27
L-3 (ex-C-21) Ierax Laid Down 1-Jan-26 Entered service 24/Jun/27
L-4 (ex-C-22) Aetos Laid Down 1-Jul-26 Entered service 22/Dec/27



Built as leaders for Destroyer Squadrons.

Displacement:
2,962 t light; 3,061 t standard; 3,143 t normal; 3,197 t full load
Loading submergence 322 tons/feet

Dimensions:
420.00 ft x 42.10 ft x 12.20 ft (normal load)
128.02 m x 12.83 m x 3.72 m

Armament:
6 - 5.00" / 127 mm guns (3 Main turrets x 2 guns, 1 superfiring turret)
3 - 3.00" / 76 mm guns
8 - 1.57" / 40 mm AA guns
Weight of broadside 431 lbs / 196 kg
9 - 21.0" / 533.4 mm above water torpedoes

Armour:
Belt 1.00" / 25 mm, ends unarmoured
Belts cover 191 % of normal area
Main turrets 1.00" / 25 mm
Conning tower 1.00" / 25 mm
Machinery: Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 60,660 shp / 45,253 Kw = 33.70 kts
Range 2,000nm at 12.00 kts

Complement:
209 - 272

Cost:
£1.272 million / $5.086 million

Distribution of weights at normal Displacement:
Armament: 54 tons, 1.7 % Armour: 219 tons, 7.0 %
Belts: 166 tons, 5.3 %, Armament: 47 tons, 1.5 %, Armour Deck: 0 tons, 0.0 %
Conning Tower: 5 tons, 0.1 %, Torpedo bulkhead: 0 tons, 0.0 % Machinery: 1,711 tons, 54.4 %
Hull, fittings & equipment: 978 tons, 31.1 %
Fuel, ammunition & stores: 182 tons, 5.8 %
Miscellaneous weights: 0 tons, 0.0 %

Metacentric height 1.9

Remarks:
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage & compartmentation is cramped
Room for accommodation & workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.19
Shellfire needed to sink: 883 lbs / 400 Kg = 14.1 x 5.0 " / 127 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 0.4
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 72 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.45
Relative quality as seaboat: 1.03

Hull form characteristics:
Block coefficient: 0.510
Sharpness coefficient: 0.33
Hull speed coefficient 'M': 8.76
'Natural speed' for length: 20.49 kts
Power going to wave formation at top speed: 67 %
Trim: 70
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 188.8 %
Relative accommodation and working space: 121.3 %
(Average = 100%)
Displacement factor: 69 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.60
(Structure weight / hull surface area: 49 lbs / square foot or 242 Kg / square metre)
Relative longitudinal hull strength: 1.21
(for 18.20 ft / 5.55 m average freeboard, freeboard adjustment 6.19 ft)
Relative composite hull strength: 0.64

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[SIZE=3]RHN L-5 Karcharías Class, Greek Destoyer Leaders[/SIZE]
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L-5 Karcharías Laid Down 1-Jul-41
L-6 Tombazis Laid Down 2-Jul-41
L-7 MaiouIis Laid Down 1-Oct-41
L-8 Kodrington Laid Down 1-Oct-41
L-9 through L-12 Possible future consideration

Displacement:
2,755 t light; 2,893 t standard; 3,177 t normal; 3,404 t full load

Dimensions: Length overall / water x beam x draught
472.52 ft / 451.00 ft x 42.00 ft x 15.50 ft (normal load)
144.02 m / 137.46 m x 12.80 m x 4.72 m

Armament:
8 - 5.00" / 127 mm guns (4x2 guns), 59.90lbs / 27.17kg shells, 1941 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread, 2 raised mounts - superfiring
16 - 1.57" / 40.0 mm guns (4x4 guns), 2.14lbs / 0.97kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
8 - 0.79" / 20.0 mm guns (4x2 guns), 0.27lbs / 0.12kg shells, 1941 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 516 lbs / 234 kg
Shells per gun, main battery: 250
10 - 24.0" / 609.6 mm above water torpedoes

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.00" / 51 mm 0.50" / 13 mm 1.00" / 25 mm
2nd: - 0.25" / 6 mm -
3rd: 0.50" / 13 mm - -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 68,000 shp / 50,728 Kw = 37.21 kts
Range 5,000nm at 15.00 kts
Bunker at max displacement = 511 tons

Complement:
211 - 275

Cost:
£2.343 million / $9.372 million

Distribution of weights at normal displacement:
Armament: 67 tons, 2.1 %
Armour: 30 tons, 0.9 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 30 tons, 0.9 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 1,619 tons, 50.9 %
Hull, fittings & equipment: 965 tons, 30.4 %
Fuel, ammunition & stores: 422 tons, 13.3 %
Miscellaneous weights: 75 tons, 2.4 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
782 lbs / 355 Kg = 12.5 x 5.0 " / 127 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.19
Metacentric height 1.9 ft / 0.6 m
Roll period: 12.9 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.53
Seaboat quality (Average = 1.00): 1.02

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.379
Length to Beam Ratio: 10.74 : 1
'Natural speed' for length: 24.50 kts
Power going to wave formation at top speed: 64 %
Trim (Max stability = 0, Max steadiness = 100): 69
Bow angle (Positive = bow angles forward): 35.00 degrees
Stern overhang: 5.41 ft / 1.65 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 23.00 ft / 7.01 m
- Forecastle (20 %): 21.50 ft / 6.55 m
- Mid (45 %): 21.50 ft / 6.55 m (13.50 ft / 4.11 m aft of break)
- Quarterdeck (10 %): 13.50 ft / 4.11 m
- Stern: 13.50 ft / 4.11 m
- Average freeboard: 17.22 ft / 5.25 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 184.0 %
- Above water (accommodation/working, high = better): 92.8 %
Waterplane Area: 11,977 Square feet or 1,113 Square metres
Displacement factor (Displacement / loading): 75 %
Structure weight / hull surface area: 43 lbs/sq ft or 210 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 1.50
- Overall: 0.55
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
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