WesWorld

Greece has rebuilt an Akhilleus class Frigate, F-1 Akhilleus as a special trials ship for training with new armament and fitted new boilers with a higher working pressure. The ship will be classed as a Training Destroyer.

The Akhilleus is one of forty Type E series ships built for the Greek navy in the late 1920's including Frigates, Gunboats, Seaplane tenders and Minelayers built on a common hull. Two of the Akhilleus class, Europa and Narcissus were completed as destroyers Smeul and Sborul for the Romanian Navy.



RHN-F-51 Akhilleus-1934 Class, Greek Trials Frigate laid down 1925 (Engine 1934)

Displacement:
2,031 t light; 2,092 t standard; 2,252 t normal; 2,380 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(354.06 ft / 350.00 ft) x 38.30 ft x (12.00 / 12.51 ft)
(107.92 m / 106.68 m) x 11.67 m x (3.66 / 3.81 m)

Armament:
2 - 5.00" / 127 mm 40.0 cal guns - 59.90lbs / 27.17kg shells, 100 per gun
Quick firing guns in deck mount , 1934 Model
1 x Twin mount on centreline, forward deck centre
2 - 5.00" / 127 mm 40.0 cal guns - 59.90lbs / 27.17kg shells, 100 per gun
Breech loading guns in deck and hoist mounts , 1934 Model
2 x Single mounts on centreline, aft evenly spread
1 raised mount
4 - 1.57" / 40.0 mm 50.0 cal guns - 2.07lbs / 0.94kg shells, 500 per gun
Anti-air guns in deck mounts , 1934 Model
2 x Single mounts on sides amidships
2 raised mounts
8 - 0.50" / 12.7 mm 60.0 cal guns - 0.07lbs / 0.03kg shells, 1,000 per gun
Machine guns in deck mounts , 1934 Model
8 x Single mounts on sides, evenly spread
4 raised mounts
Weight of broadside 248 lbs / 248 kg
8 - 21.0" / 533 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 0.75" / 19 mm 225.00 ft / 68.58 m 7.40 ft / 2.26 m
Ends: Unarmoured
Main Belt covers 99 % of normal length
Main belt does not fully cover magazines and engineering spaces

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm - -
2nd: 0.50" / 13 mm - -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 53,358 shp / 39,805 Kw = 33.50 kts
Range 3,000nm at 15.00 kts
Bunker at max displacement = 287 tons

Complement:
163 - 212

Cost:
£0.854 million / $3.417 million

Distribution of weights at normal displacement:
Armament: 47 tons, 2.1 %
Armour: 58 tons, 2.6 %
- Belts: 52 tons, 2.3 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 5 tons, 0.2 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 1,242 tons, 55.2 %
Hull, fittings & equipment: 682 tons, 30.3 %
Fuel, ammunition & stores: 221 tons, 9.8 %
Miscellaneous weights: 30 tons, 1.3 %
- Hull below water: 30 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
642 lbs / 291 Kg = 10.3 x 5.0 " / 127 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.24
Metacentric height 1.8 ft / 0.5 m
Roll period: 12.1 seconds
Steadiness - As gun platform (Average = 50 %): 55 %
- Recoil effect (Restricted arc if above 1.00): 0.26
Seaboat quality (Average = 1.00): 0.72

Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.490 / 0.497
Length to Beam Ratio: 9.14 : 1
'Natural speed' for length: 18.71 kts
Power going to wave formation at top speed: 71 %
Trim (Max stability = 0, Max steadiness = 100): 77
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 15.00 %, 23.00 ft / 7.01 m, 20.00 ft / 6.10 m
- Forward deck: 27.00 %, 20.00 ft / 6.10 m, 20.00 ft / 6.10 m
- Aft deck: 43.00 %, 11.00 ft / 3.35 m, 11.00 ft / 3.35 m
- Quarter deck: 15.00 %, 11.00 ft / 3.35 m, 11.00 ft / 3.35 m
- Average freeboard: 14.96 ft / 4.56 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 186.1 %
- Above water (accommodation/working, high = better): 88.1 %
Waterplane Area: 8,851 Square feet or 822 Square metres
Displacement factor (Displacement / loading): 68 %
Structure weight / hull surface area: 44 lbs/sq ft or 214 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.61
- Longitudinal: 1.78
- Overall: 0.67
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

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Original sim
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RHN-F-1 Akhilleus Class, Greek Type 1 Frigate-Transport laid down 1925

Displacement:
1,907 t light; 1,977 t standard; 2,574 t normal; 3,051 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(353.70 ft / 350.00 ft) x 38.30 ft x (14.00 / 15.90 ft)
(107.81 m / 106.68 m) x 11.67 m x (4.27 / 4.85 m)

Armament:
1 - 5.00" / 127 mm 51.0 cal gun - 66.46lbs / 30.15kg shells, 100 per gun
Quick firing gun in deck mount , 1925 Model
1 x Twin mount on centreline, forward deck centre
3 - 5.00" / 127 mm 51.0 cal guns - 66.46lbs / 30.15kg shells, 100 per gun
Breech loading guns in deck and hoist mounts , 1925 Model
3 x Single mounts on centreline, aft evenly spread
2 raised mounts
2 - 4.00" / 102 mm 40.0 cal guns - 30.67lbs / 13.91kg shells, 100 per gun
Anti-air guns in deck mounts , 1925 Model
2 x Single mounts on sides amidships
2 raised mounts
8 - 0.50" / 12.7 mm 45.0 cal guns - 0.06lbs / 0.03kg shells, 1,000 per gun
Machine guns in deck mounts , 1925 Model
8 x Single mounts on sides, evenly spread
4 raised mounts
Weight of broadside 328 lbs / 328 kg

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 0.75" / 19 mm 225.00 ft / 68.58 m 7.40 ft / 2.26 m
Ends: Unarmoured
Main Belt covers 99 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.00" / 25 mm 1.00" / 25 mm -
2nd: 1.00" / 25 mm 1.00" / 25 mm -

- Armour deck: 0.50" / 13 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 14,206 shp / 10,598 Kw = 24.00 kts
Range 10,000nm at 15.00 kts
Bunker at max displacement = 1,074 tons

Complement:
179 - 234

Cost:
£0.521 million / $2.084 million

Distribution of weights at normal displacement:
Armament: 82 tons, 3.2 %
Armour: 162 tons, 6.3 %
- Belts: 52 tons, 2.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 28 tons, 1.1 %
- Armour Deck: 81 tons, 3.2 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 461 tons, 17.9 %
Hull, fittings & equipment: 911 tons, 35.4 %
Fuel, ammunition & stores: 667 tons, 25.9 %
Miscellaneous weights: 340 tons, 13.2 %
- Hull below water: 340 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
3,819 lbs / 1,732 Kg = 61.1 x 5.0 " / 127 mm shells or 1.1 torpedoes
Stability (Unstable if below 1.00): 1.24
Metacentric height 1.8 ft / 0.5 m
Roll period: 12.1 seconds
Steadiness - As gun platform (Average = 50 %): 64 %
- Recoil effect (Restricted arc if above 1.00): 0.38
Seaboat quality (Average = 1.00): 1.25

Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and a cruiser stern
Block coefficient (normal/deep): 0.480 / 0.501
Length to Beam Ratio: 9.14 : 1
'Natural speed' for length: 18.71 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 51
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 15.00 %, 21.00 ft / 6.40 m, 18.00 ft / 5.49 m
- Forward deck: 27.00 %, 18.00 ft / 5.49 m, 18.00 ft / 5.49 m
- Aft deck: 43.00 %, 9.00 ft / 2.74 m, 9.00 ft / 2.74 m
- Quarter deck: 15.00 %, 9.00 ft / 2.74 m, 9.00 ft / 2.74 m
- Average freeboard: 12.96 ft / 3.95 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 82.9 %
- Above water (accommodation/working, high = better): 116.4 %
Waterplane Area: 8,772 Square feet or 815 Square metres
Displacement factor (Displacement / loading): 152 %
Structure weight / hull surface area: 62 lbs/sq ft or 304 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.74
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Good seaboat, rides out heavy weather easily

Cheers,

Very nice drawing Roger, though the 40mm and .50 cal weapons layout doesn't quite match the SS file.

Thanks Wes, and I'm still getting the hang of the latest SS so I'm stuffing up the AA armament.

Cheers,

Looks pretty good.

Historically, weapons testing ships tended to be larger (HMS Iron Duke) but our rules make that uneconomical.

Thanks RA. I've tried going for more detail in small ship drawings.

The guns are already in service but this will give experience on a twin turret forward for Destroyers and also test new boilers. A bit like the Russian "Opytniy". The classification of 'Training destroyer' is for CT consumption.

Cheers,