Torpedo Gun Boats

Jefgte · August 16, 2017, 04:27:36 PM

Destroyers have over 50% of engine displacement, often 52, 53, or 54%.
TGBs only have 50% of the displacement reserved for the engines.
Weight saving is reserved for the installation of a powerful artillery, often 120mm guns and 4 torpedo tubes.
The first TGBs were built in 1892 with a speed of 21kts, sufficient at the time. The most recent show 25kts.

In 1915, The Byzantine Empire confirmed this concept and the missions for the next TGBs.
1 - Colonial work, patrols, escorts.
2 - Close protection of large combat ships vs Destroyers and MTBs.
3 - Scouting & reinforcement of the combat fleet.

In 1923, All TGB are affected to the Colonial Patrols.

TGB in 1925H2

Madagascar	TGB550exD3	TGB102-TGB103	550
Madagascar	TGB550exD3	TGB100-TGB101	550
Madagascar	TGB550exD3	TGB98-TGB99	550
Mtwara	TGB550exD3	TGB96-TGB97	550
Maputo	TGB550exD3	TGB94-TGB95	550
Réunion-Maurice	TGB550exD3	TGB92-TGB93	550
Mtwara	TGB800	TGB90-TGB91	800
Maputo	TGB800	TGB88-TGB89	800
Port Darwin	TGB800	TGB86-TGB87	800
Gladstone	TGB800	TGB84-TGB85	800
Honaria (Guadalcanal)	TGB800	TGB82-TGB83	800
Walvis Bay	TGB800	TGB80-TGB81	800
Salvador	TGB800	TGB78-TGB79	800
Porto Seguro	TGB800	TGB76-TGB77	800
Sunda Islands	D750	TGB74-TGB75	750
Gladstone	D750	TGB72-TGB73	750
Honaria (Guadalcanal)	D750	TGB70-TGB71	750
Manokwari (New Guinea)	D750	TGB68-TGB69	750
Port Darwin	D750	TGB65-TGB66-TGB67	750

Jefgte · August 17, 2017, 04:40:10 PM

A more powerful ships was build with the 140t torpedo boat class. Abble of engaging enemy torpedo boats at great distances,
3 x 120/45 guns were installed on 500t hulls. The speed of 21 kts was considered sufficient to protect the 18 kts battle line.

TGB500, Byzantine Empire TGB-500t laid down 1892

TGB1 to TGB24

TGB1 to TGB12 scrapped in 1916H2
TGB13 to TGB24 scrapped in 1917H1

Displacement:
   500 t light; 525 t standard; 578 t normal; 621 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (246,00 ft / 246,00 ft) x 28,40 ft x (6,83 / 7,17 ft)
   (74,98 m / 74,98 m) x 8,66 m x (2,08 / 2,19 m)

Armament:
3 - 4,72" / 120 mm 45,0 cal guns - 53,02lbs / 24,05kg shells, 140 per gun
     Quick firing guns in deck mounts, 1892 Model
     3 x Single mounts on centreline, evenly spread
2 - 1,85" / 47,0 mm 45,0 cal guns - 3,20lbs / 1,45kg shells, 250 per gun
     Quick firing guns in deck mounts, 1892 Model
     2 x Single mounts on sides, forward deck aft
2 - 0,30" / 7,7 mm 50,0 cal guns - 0,01lbs / 0,00kg shells, 2 000 per gun
     Machine guns in deck mounts, 1892 Model
     2 x Single mounts on sides, forward deck centre
Weight of broadside 165 lbs / 75 kg

Armour:
- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,47" / 12 mm     -           -
   2nd:   0,47" / 12 mm     -           -
   3rd:   0,30" / 8 mm     -           -

Machinery:
   Coal fired boilers, simple reciprocating steam engines,
   Direct drive, 2 shafts, 4 000 ihp / 2 984 Kw = 21,35 kts
   Range 1 800nm at 10,00 kts
   Bunker at max displacement = 96 tons (100% coal)
     Caution: Delicate, lightweight machinery

Complement:
   58 - 76

Cost:
   £0,068 million / $0,272 million

Distribution of weights at normal displacement:
   Armament: 29 tons, 5,1 %
     - Guns: 29 tons, 5,1 %
   Armour: 7 tons, 1,3 %
     - Armament: 7 tons, 1,3 %
   Machinery: 304 tons, 52,6 %
   Hull, fittings & equipment: 123 tons, 21,3 %
   Fuel, ammunition & stores: 78 tons, 13,5 %
   Miscellaneous weights: 36 tons, 6,2 %
     - On freeboard deck: 26 tons
     - Above deck: 10 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     144 lbs / 65 Kg = 2,7 x 4,7 " / 120 mm shells or 0,2 torpedoes
   Stability (Unstable if below 1.00): 1,47
   Metacentric height 1,5 ft / 0,4 m
   Roll period: 9,9 seconds
   Steadiness   - As gun platform (Average = 50 %): 78 %
         - Recoil effect (Restricted arc if above 1.00): 0,18
   Seaboat quality (Average = 1.00): 1,11

Hull form characteristics:
   Hull has raised forecastle,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,424 / 0,434
   Length to Beam Ratio: 8,66 : 1
   'Natural speed' for length: 15,68 kts
   Power going to wave formation at top speed: 54 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   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:   22,00 %, 12,20 ft / 3,72 m, 10,70 ft / 3,26 m
     - Forward deck:   30,00 %, 8,00 ft / 2,44 m, 7,70 ft / 2,35 m
     - Aft deck:   28,00 %, 7,70 ft / 2,35 m, 7,50 ft / 2,29 m
     - Quarter deck:   20,00 %, 7,50 ft / 2,29 m, 7,50 ft / 2,29 m
     - Average freeboard:      8,47 ft / 2,58 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 183,5 %
      - Above water (accommodation/working, high = better): 100,5 %
   Waterplane Area: 4 368 Square feet or 406 Square metres
   Displacement factor (Displacement / loading): 35 %
   Structure weight / hull surface area: 22 lbs/sq ft or 109 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 0,71
      - Overall: 0,52
   Caution: Hull subject to strain in open-sea
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

8 tons for 4TTx450 + 4 reloads
16t reserved for different materials, coal, mines, Flotilla leader, troops...
Range:
1800nm at 10 kts
2675nm at 9 kts with 112 tons of coal

Trial speed:24kts
Bonu:2.65

Refit 1904
10t for Marconi
2t for top mast rangefinder

Jefgte · August 22, 2017, 04:32:02 PM

Annual Naval Exercises in the Black Sea with the Battle Fleet showed that the 500t TGBs were exellent to protect the Battleships against enemy Torpedoes attacks.
As a result, the Admiralty built in 1897-98-99 another more powerful serie.

Reclassed Patrol Boats in 1917H2

TGB500, Byzantine Empire TGB-500t laid down 1897

1897 : TGB25 to TGB32 Scrap in 1924
1898 : TGB33 to TGB40 Scrap in 1925H1
1899 : TGB41 to TGB48 Scrap in 1925H2

Displacement:
   500 t light; 529 t standard; 581 t normal; 622 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (246,00 ft / 246,00 ft) x 28,40 ft x (6,86 / 7,19 ft)
   (74,98 m / 74,98 m) x 8,66 m x (2,09 / 2,19 m)

Armament:
4 - 4,72" / 120 mm 45,0 cal guns - 53,02lbs / 24,05kg shells, 140 per gun
     Quick firing guns in deck mounts, 1897 Model
     4 x Single mounts on centreline, evenly spread
      2 raised mounts
2 - 1,85" / 47,0 mm 45,0 cal guns - 3,20lbs / 1,45kg shells, 250 per gun
     Quick firing guns in deck mounts, 1897 Model
     2 x Single mounts on sides, forward deck aft
2 - 0,30" / 7,7 mm 50,0 cal guns - 0,01lbs / 0,00kg shells, 2 000 per gun
     Machine guns in deck mounts, 1897 Model
     2 x Single mounts on sides, forward deck centre
Weight of broadside 218 lbs / 99 kg

Armour:
- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,47" / 12 mm     -           -
   2nd:   0,47" / 12 mm     -           -
   3rd:   0,30" / 8 mm     -           -

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 4 150 ihp / 3 096 Kw = 21,54 kts
   Range 1 900nm at 10,00 kts
   Bunker at max displacement = 93 tons (100% coal)

Complement:
   58 - 76

Cost:
   £0,069 million / $0,277 million

Distribution of weights at normal displacement:
   Armament: 39 tons, 6,6 %
     - Guns: 39 tons, 6,6 %
   Armour: 9 tons, 1,5 %
     - Armament: 9 tons, 1,5 %
   Machinery: 294 tons, 50,7 %
   Hull, fittings & equipment: 123 tons, 21,1 %
   Fuel, ammunition & stores: 81 tons, 13,9 %
   Miscellaneous weights: 36 tons, 6,2 %
     - On freeboard deck: 24 tons
     - Above deck: 12 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     142 lbs / 64 Kg = 2,7 x 4,7 " / 120 mm shells or 0,2 torpedoes
   Stability (Unstable if below 1.00): 1,38
   Metacentric height 1,3 ft / 0,4 m
   Roll period: 10,4 seconds
   Steadiness   - As gun platform (Average = 50 %): 74 %
         - Recoil effect (Restricted arc if above 1.00): 0,34
   Seaboat quality (Average = 1.00): 1,05

Hull form characteristics:
   Hull has raised forecastle,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,424 / 0,433
   Length to Beam Ratio: 8,66 : 1
   'Natural speed' for length: 15,68 kts
   Power going to wave formation at top speed: 55 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   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:   22,00 %, 12,20 ft / 3,72 m, 10,70 ft / 3,26 m
     - Forward deck:   30,00 %, 8,00 ft / 2,44 m, 7,70 ft / 2,35 m
     - Aft deck:   28,00 %, 7,70 ft / 2,35 m, 7,50 ft / 2,29 m
     - Quarter deck:   20,00 %, 7,50 ft / 2,29 m, 7,50 ft / 2,29 m
     - Average freeboard:      8,47 ft / 2,58 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 181,7 %
      - Above water (accommodation/working, high = better): 100,5 %
   Waterplane Area: 4 368 Square feet or 406 Square metres
   Displacement factor (Displacement / loading): 39 %
   Structure weight / hull surface area: 23 lbs/sq ft or 113 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 0,75
      - Overall: 0,52
   Caution: Hull subject to strain in open-sea
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

8 tons for 4TTx450 + 2 reloads
18t for different materials, mines, Flotilla leader, troops, coal...
Range:
1 900nm at 10,00 kts with 93tons of coal
2 400nm at 9,00 kts
2 900nm at 9,00kts with 111 tons of coal

Trial speed:24kts
Bonus:2.46

1909 refit
10t for Marconi
2t for top mast rangefinder

Jefgte · September 05, 2017, 04:18:25 PM

With the 750t destroyer class, 12x750t TGB were built.

TGB750, Byzantine Empire TGB laid down 1906

in 1914 Re Classed as "Destroyer" then renamed D750 class

In 1922, their too low speed made them reclassify in the category of TGB and assigned to the far east colonies.
For their patrols, a long-range radio (25t) was installed in 1922H2.

LD 1906 => TGB65 - TGB66 - TGB67 - TGB68
LD 1908 => TGB69 - TGB70 - TGB71 - TGB72 - TGB73 - TGB74 - TGB75

Displacement:
   750 t light; 787 t standard; 924 t normal; 1 034 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (288,00 ft / 288,00 ft) x 32,00 ft x (8,48 / 9,15 ft)
   (87,78 m / 87,78 m) x 9,75 m x (2,58 / 2,79 m)

Armament:
4 - 4,72" / 120 mm 45,0 cal guns - 53,02lbs / 24,05kg shells, 146 per gun
     Quick firing guns in deck mounts, 1906 Model
     4 x Single mounts on centreline, evenly spread
      2 raised mounts
2 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 1 970 per gun
     Anti-air guns in deck mounts, 1928 Model
     2 x 1-gun mounts on sides, forward deck aft
      2 raised mounts
2 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 4 000 per gun
     Machine guns in deck mounts, 1928 Model
     2 x Single mounts on sides, forward deck forward
      2 raised mounts
Weight of broadside 219 lbs / 99 kg

Armour:
- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,47" / 12 mm     -           -
   3rd:   0,39" / 10 mm     -           -
   4th:   0,39" / 10 mm     -           -

Machinery:
   Coal and oil fired boilers, steam turbines,
   Direct drive, 2 shafts, 10 300 shp / 7 684 Kw = 25,59 kts
   Range 4 000nm at 10,00 kts
   Bunker at max displacement = 248 tons (90% coal)

Complement:
   83 - 108

Cost:
   £0,102 million / $0,407 million

Distribution of weights at normal displacement:
   Armament: 39 tons, 4,2 %
     - Guns: 39 tons, 4,2 %
   Armour: 9 tons, 0,9 %
     - Armament: 9 tons, 0,9 %
   Machinery: 463 tons, 50,1 %
   Hull, fittings & equipment: 194 tons, 21,0 %
   Fuel, ammunition & stores: 174 tons, 18,8 %
   Miscellaneous weights: 46 tons, 5,0 %
     - On freeboard deck: 34 tons
     - Above deck: 12 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     251 lbs / 114 Kg = 4,8 x 4,7 " / 120 mm shells or 0,2 torpedoes
   Stability (Unstable if below 1.00): 1,42
   Metacentric height 1,7 ft / 0,5 m
   Roll period: 10,4 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0,22
   Seaboat quality (Average = 1.00): 1,00

Hull form characteristics:
   Hull has raised forecastle,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,414 / 0,429
   Length to Beam Ratio: 9,00 : 1
   'Natural speed' for length: 16,97 kts
   Power going to wave formation at top speed: 59 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   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:   30,00 %, 14,78 ft / 4,50 m, 13,63 ft / 4,15 m
     - Forward deck:   25,00 %, 9,63 ft / 2,94 m, 9,20 ft / 2,80 m
     - Aft deck:   30,00 %, 9,20 ft / 2,80 m, 8,80 ft / 2,68 m
     - Quarter deck:   15,00 %, 8,80 ft / 2,68 m, 8,50 ft / 2,59 m
     - Average freeboard:      10,58 ft / 3,22 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 173,3 %
      - Above water (accommodation/working, high = better): 120,7 %
   Waterplane Area: 5 722 Square feet or 532 Square metres
   Displacement factor (Displacement / loading): 57 %
   Structure weight / hull surface area: 25 lbs/sq ft or 122 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,50
      - Longitudinal: 0,84
      - Overall: 0,52
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

25t for Marconi
4t for top mast rangefinder
8t for 2x2TT x 450
5t for 50x90 DC
2t for paravanes
2t reserved

Before 1922
10t for Marconi
4t for top mast rangefinder
8t for 2x2TT x 450
24t reserved

Trial speed : 27kts
Bonus : 1.41

Jefgte · April 23, 2022, 05:06:13 PM

TGB800 type is chosen for Colonies Patrols, Escorts & reinforcement of the Colonial Fleet.

1922 => TGB76 - TGB77 - TGB78 - TGB79 - TGB80 - TGB81 - TGB82 - TGB83 - TGB84 - TGB85 - TGB86 - TGB87
1924 =>TGB88 - TGB89 - TGB90 - TGB91 - TGB92 - TGB93

TGB800, Byzantine Empire Colonial Torpedo Gun Boat laid down 1922

Displacement:
   800 t light; 846 t standard; 919 t normal; 977 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (260,56 ft / 259,19 ft) x 29,53 ft x (9,87 / 10,29 ft)
   (79,42 m / 79,00 m) x 9,00 m x (3,01 / 3,14 m)

Armament:
4 - 4,00" / 102 mm 45,0 cal guns - 32,28lbs / 14,64kg shells, 250 per gun
     Quick firing guns in deck mounts, 1922 Model
     2 x 2-gun mounts on centreline ends, evenly spread
2 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 1 970 per gun
     Anti-air guns in deck mount, 1928 Model
     1 x 2-gun mount on centreline, aft deck aft
      1 raised mount
4 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 1 970 per gun
     Anti-air guns in deck mounts, 1928 Model
     2 x 2-gun mounts on sides, forward deck aft
      2 raised mounts
2 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 4 000 per gun
     Machine guns in deck mounts, 1928 Model
     2 x Single mounts on sides, forward deck forward
      2 raised mounts
Weight of broadside 156 lbs / 71 kg

Armour:
- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,39" / 10 mm     -           -
   2nd:   0,39" / 10 mm     -           -
   3rd:   0,39" / 10 mm     -           -
   4th:   0,39" / 10 mm     -           -

Machinery:
   Coal and oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 10 340 shp / 7 714 Kw = 25,26 kts
   Range 5 000nm at 10,00 kts
   Bunker at max displacement = 131 tons (25% coal)

Complement:
   83 - 108

Cost:
   £0,235 million / $0,939 million

Distribution of weights at normal displacement:
   Armament: 29 tons, 3,2 %
     - Guns: 29 tons, 3,2 %
   Armour: 8 tons, 0,9 %
     - Armament: 8 tons, 0,9 %
   Machinery: 359 tons, 39,0 %
   Hull, fittings & equipment: 333 tons, 36,2 %
   Fuel, ammunition & stores: 119 tons, 12,9 %
   Miscellaneous weights: 71 tons, 7,7 %
     - On freeboard deck: 43 tons
     - Above deck: 28 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     636 lbs / 288 Kg = 19,9 x 4,0 " / 102 mm shells or 0,4 torpedoes
   Stability (Unstable if below 1.00): 1,14
   Metacentric height 1,0 ft / 0,3 m
   Roll period: 12,3 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0,25
   Seaboat quality (Average = 1.00): 1,20

Hull form characteristics:
   Hull has a flush deck,
     a normal bow and a cruiser stern
   Block coefficient (normal/deep): 0,426 / 0,434
   Length to Beam Ratio: 8,78 : 1
   'Natural speed' for length: 16,10 kts
   Power going to wave formation at top speed: 63 %
   Trim (Max stability = 0, Max steadiness = 100): 60
   Bow angle (Positive = bow angles forward): 5,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   18,00 %, 15,75 ft / 4,80 m, 13,45 ft / 4,10 m
     - Forward deck:   33,00 %, 13,45 ft / 4,10 m, 10,83 ft / 3,30 m
     - Aft deck:   33,00 %, 10,83 ft / 3,30 m, 10,83 ft / 3,30 m
     - Quarter deck:   16,00 %, 10,83 ft / 3,30 m, 11,48 ft / 3,50 m
     - Average freeboard:      11,95 ft / 3,64 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 136,9 %
      - Above water (accommodation/working, high = better): 126,3 %
   Waterplane Area: 4 792 Square feet or 445 Square metres
   Displacement factor (Displacement / loading): 105 %
   Structure weight / hull surface area: 40 lbs/sq ft or 194 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,79
      - Longitudinal: 2,87
      - Overall: 0,90
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

3t for top mast rangefinder-1914 (14 000m)
25t for Long Range Marconi
9t for 1x3TTx533
4t for forced ventilation
10t for 1920 sonar
5t for 50x90kg DC
2t for paravanes
13t reserved for new material, armament or 12 minen.

Jefgte · March 25, 2023, 04:14:03 AM

TGB550 ex D3, Byzantine Empire TGB550 laid down 1901 (Engine 1925)

1925H1 => TGB92 - TGB93 - TGB94 - TGB95 - TGB96 - TGB97 - TGB98 - TGB99 - TGB100 - TGB101 - TBG102 - TGB103
1925H2 => TGB104 - TGB105 - TGB106 - TGB107 - TGB108 - TGB109 - TGB110 - TGB111 - TGB112 - TGB113 - TGB114 - TGB115

Displacement:
550 t light; 580 t standard; 629 t normal; 669 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(246,06 ft / 246,06 ft) x 24,61 ft x (9,09 / 9,47 ft)
(75,00 m / 75,00 m) x 7,50 m x (2,77 / 2,89 m)

Armament:
3 - 4,00" / 102 mm 45,0 cal guns - 33,00lbs / 14,97kg shells, 175 per gun
     Quick firing guns in deck mounts, 1925 Model
     3 x Single mounts on centreline, evenly spread
2 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 1 970 per gun
     Anti-air guns in deck mount, 1928 Model
     1 x 2-gun mount on centreline, aft deck aft
      1 raised mount
4 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 1 970 per gun
     Anti-air guns in deck mounts, 1928 Model
     2 x 2-gun mounts on sides, forward deck aft
      2 raised mounts
2 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 4 000 per gun
     Machine guns in deck mounts, 1928 Model
     2 x Single mounts on sides, forward deck forward
      2 raised mounts
Weight of broadside 111 lbs / 50 kg

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0,39" / 10 mm - -
2nd: 0,39" / 10 mm - -
3rd: 0,39" / 10 mm - -
4th: 0,39" / 10 mm - -

Machinery:
Oil fired boilers, steam turbines,
Electric motors, 2 shafts, 8 000 shp / 5 968 Kw = 25,20 kts
Range 3 100nm at 12,00 kts
Bunker at max displacement = 89 tons

Complement:
62 - 81

Cost:
£0,059 million / $0,237 million

Distribution of weights at normal displacement:
Armament: 23 tons, 3,7 %
- Guns: 23 tons, 3,7 %
Armour: 7 tons, 1,0 %
- Armament: 7 tons, 1,0 %
Machinery: 242 tons, 38,5 %
Hull, fittings & equipment: 181 tons, 28,8 %
Fuel, ammunition & stores: 79 tons, 12,6 %
Miscellaneous weights: 97 tons, 15,4 %
- Hull below water: 61 tons
- Hull above water: 5 tons
- On freeboard deck: 29 tons
- Above deck: 2 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
271 lbs / 123 Kg = 8,5 x 4,0 " / 102 mm shells or 0,3 torpedoes
Stability (Unstable if below 1.00): 1,16
Metacentric height 0,8 ft / 0,2 m
Roll period: 11,5 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0,29
Seaboat quality (Average = 1.00): 1,01

Hull form characteristics:
Hull has raised forecastle,
a ram bow and a cruiser stern
Block coefficient (normal/deep): 0,400 / 0,408
Length to Beam Ratio: 10,00 : 1
'Natural speed' for length: 15,69 kts
Power going to wave formation at top speed: 61 %
Trim (Max stability = 0, Max steadiness = 100): 70
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: 24,00 %, 15,49 ft / 4,72 m, 14,17 ft / 4,32 m
- Forward deck: 25,00 %, 8,92 ft / 2,72 m, 7,35 ft / 2,24 m
- Aft deck: 26,00 %, 7,35 ft / 2,24 m, 7,35 ft / 2,24 m
- Quarter deck: 25,00 %, 7,35 ft / 2,24 m, 7,02 ft / 2,14 m
- Average freeboard: 9,27 ft / 2,83 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 147,0 %
- Above water (accommodation/working, high = better): 88,6 %
Waterplane Area: 3 727 Square feet or 346 Square metres
Displacement factor (Displacement / loading): 92 %
Structure weight / hull surface area: 29 lbs/sq ft or 142 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,69
- Longitudinal: 1,62
- Overall: 0,75
Cramped machinery, storage, compartmentation space
Cramped accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform

1909 refit
1t for new rangefinder
10t for Marconi

1925 refurbisment
new engines - turbines 8000shp
62t for electric drive
new 102mm guns with 2t rangefinder - 14km
9t for 3TTx533
5t climatisation
10t for 1920 sonar
5t for 50 DC
2t for paravanes
3t reserved

Jefgte · July 05, 2023, 09:59:01 AM

D4 to TGB550, Byzantine Empire TGB550 laid down 1904 (Engine 1925)

TGB116 - TGB117 - TGB118 - TGB119 - TGB120 - TGB121
TGB122 - TGB123 - TGB124 - TGB125 - TGB126 - (D58 blew up)

Displacement:
   550 t light; 580 t standard; 629 t normal; 669 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (246,06 ft / 246,06 ft) x 24,61 ft x (9,10 / 9,47 ft)
   (75,00 m / 75,00 m) x 7,50 m x (2,77 / 2,89 m)

Armament:
3 - 4,00" / 102 mm 45,0 cal guns - 33,00lbs / 14,97kg shells, 175 per gun
     Quick firing guns in deck mounts, 1925 Model
     3 x Single mounts on centreline, evenly spread
2 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 1 970 per gun
     Anti-air guns in deck mount, 1928 Model
     1 x 2-gun mount on centreline, aft deck aft
      1 raised mount
4 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 1 970 per gun
     Anti-air guns in deck mounts, 1928 Model
     2 x 2-gun mounts on sides, forward deck aft
      2 raised mounts
2 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 4 000 per gun
     Machine guns in deck mounts, 1928 Model
     2 x Single mounts on sides, forward deck forward
      2 raised mounts
Weight of broadside 111 lbs / 50 kg

Armour:
- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,39" / 10 mm     -           -
   2nd:   0,39" / 10 mm     -           -
   3rd:   0,39" / 10 mm     -           -
   4th:   0,39" / 10 mm     -           -

Machinery:
   Oil fired boilers, steam turbines,
   Electric motors, 2 shafts, 8 000 shp / 5 968 Kw = 25,16 kts
   Range 3 100nm at 12,00 kts
   Bunker at max displacement = 90 tons

Complement:
   62 - 81

Cost:
   £0,059 million / $0,238 million

Distribution of weights at normal displacement:
   Armament: 23 tons, 3,7 %
     - Guns: 23 tons, 3,7 %
   Armour: 9 tons, 1,4 %
     - Armament: 9 tons, 1,4 %
   Machinery: 242 tons, 38,4 %
   Hull, fittings & equipment: 181 tons, 28,7 %
   Fuel, ammunition & stores: 79 tons, 12,6 %
   Miscellaneous weights: 95 tons, 15,1 %
     - Hull below water: 59 tons
     - Hull above water: 5 tons
     - On freeboard deck: 29 tons
     - Above deck: 2 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     280 lbs / 127 Kg = 8,8 x 4,0 " / 102 mm shells or 0,3 torpedoes
   Stability (Unstable if below 1.00): 1,17
   Metacentric height 0,8 ft / 0,2 m
   Roll period: 11,5 seconds
   Steadiness   - As gun platform (Average = 50 %): 71 %
         - Recoil effect (Restricted arc if above 1.00): 0,28
   Seaboat quality (Average = 1.00): 1,01

Hull form characteristics:
   Hull has raised forecastle,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,400 / 0,408
   Length to Beam Ratio: 10,00 : 1
   'Natural speed' for length: 15,69 kts
   Power going to wave formation at top speed: 61 %
   Trim (Max stability = 0, Max steadiness = 100): 70
   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:   25,00 %, 14,44 ft / 4,40 m, 12,14 ft / 3,70 m
     - Forward deck:   25,00 %, 8,86 ft / 2,70 m, 7,87 ft / 2,40 m
     - Aft deck:   25,00 %, 7,87 ft / 2,40 m, 7,87 ft / 2,40 m
     - Quarter deck:   25,00 %, 7,87 ft / 2,40 m, 7,55 ft / 2,30 m
     - Average freeboard:      9,25 ft / 2,82 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 146,5 %
      - Above water (accommodation/working, high = better): 92,7 %
   Waterplane Area: 3 727 Square feet or 346 Square metres
   Displacement factor (Displacement / loading): 92 %
   Structure weight / hull surface area: 29 lbs/sq ft or 143 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,69
      - Longitudinal: 1,60
      - Overall: 0,75
   Cramped machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

1925-26 refurbishment
new turbines - 8000shp
60t electric drive
new 102mm guns with 2t rangefinder - 14km
9t for 3 TT x 533
5t climatisation
10t for 1920 sonar
5t for 50DC
2t for paravanes
3t reserved

Jefgte · October 01, 2023, 04:44:57 PM

TGB500, Byzantine Empire TGB500 laid down 1928

1928 - TGB127 - TGB128 - TGB129 - TGB130 - TGB131 - TGB132 - TGB133 - TGB134

Displacement:
   500 t light; 521 t standard; 549 t normal; 571 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (244,72 ft / 242,78 ft) x 26,25 ft x (7,01 / 7,20 ft)
   (74,59 m / 74,00 m) x 8,00 m x (2,14 / 2,19 m)

Armament:
2 - 4,02" / 102 mm 45,0 cal guns - 33,00lbs / 14,97kg shells, 140 per gun
     Quick firing guns in deck mounts, 1928 Model
     2 x Single mounts on centreline ends, evenly spread
4 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 1 000 per gun
     Anti-air guns in deck mounts, 1928 Model
     2 x 2-gun mounts on sides, forward deck aft
      2 raised mounts
2 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 4 000 per gun
     Machine guns in deck mounts, 1928 Model
     2 x Single mounts on sides, forward deck forward
      2 raised mounts
Weight of broadside 74 lbs / 34 kg

Armour:
- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,39" / 10 mm     -           -
   3rd:   0,39" / 10 mm     -           -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 7 380 shp / 5 505 Kw = 25,01 kts
   Range 2 800nm at 10,00 kts
   Bunker at max displacement = 49 tons

Complement:
   56 - 73

Cost:
   £0,200 million / $0,802 million

Distribution of weights at normal displacement:
   Armament: 13 tons, 2,5 %
     - Guns: 13 tons, 2,5 %
   Armour: 2 tons, 0,5 %
     - Armament: 2 tons, 0,5 %
   Machinery: 224 tons, 40,8 %
   Hull, fittings & equipment: 192 tons, 35,1 %
   Fuel, ammunition & stores: 48 tons, 8,8 %
   Miscellaneous weights: 68 tons, 12,4 %
     - On freeboard deck: 41 tons
     - Above deck: 27 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     337 lbs / 153 Kg = 10,4 x 4,0 " / 102 mm shells or 0,3 torpedoes
   Stability (Unstable if below 1.00): 1,06
   Metacentric height 0,8 ft / 0,2 m
   Roll period: 12,7 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0,20
   Seaboat quality (Average = 1.00): 1,08

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,430 / 0,435
   Length to Beam Ratio: 9,25 : 1
   'Natural speed' for length: 15,58 kts
   Power going to wave formation at top speed: 63 %
   Trim (Max stability = 0, Max steadiness = 100): 66
   Bow angle (Positive = bow angles forward): 8,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
     - Forecastle:   22,00 %, 13,78 ft / 4,20 m, 11,15 ft / 3,40 m
     - Forward deck:   30,00 %, 11,15 ft / 3,40 m, 9,84 ft / 3,00 m
     - Aft deck:   28,00 %, 9,84 ft / 3,00 m, 9,84 ft / 3,00 m
     - Quarter deck:   20,00 %, 9,84 ft / 3,00 m, 9,84 ft / 3,00 m
     - Average freeboard:      10,56 ft / 3,22 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 139,7 %
      - Above water (accommodation/working, high = better): 125,5 %
   Waterplane Area: 4 001 Square feet or 372 Square metres
   Displacement factor (Displacement / loading): 97 %
   Structure weight / hull surface area: 29 lbs/sq ft or 139 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,67
      - Longitudinal: 2,06
      - Overall: 0,75
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

AD
25t for LR Marconi
2t for 1924 fire control
OD
9 tons for 3TTx533
4t for climatisation
10t for 1920 sonar
5t for 50 DC
2t for paravanes
11t reserved or minen

Jefgte · April 19, 2024, 07:27:56 AM

TGB500C, Byzantine Empire TGB500C laid down 1930

TGB135-TGB136-TGB137-TGB138-TGB139-TGB140-TGB141-TGB142

Displacement:
   500 t light; 535 t standard; 574 t normal; 605 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (245,82 ft / 242,78 ft) x 26,25 ft x (7,00 / 7,27 ft)
   (74,93 m / 74,00 m) x 8,00 m x (2,14 / 2,22 m)

Armament:
2 - 4,02" / 102 mm 45,0 cal guns - 33,00lbs / 14,97kg shells, 140 per gun
     Quick firing guns in deck mounts, 1930 Model
     2 x Single mounts on centreline ends, evenly spread
4 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 2 000 per gun
     Anti-air guns in deck mounts, 1930 Model
     2 x 2-gun mounts on centreline ends, evenly spread
      2 raised mounts
4 - 1,57" / 40,0 mm 39,0 cal guns - 2,01lbs / 0,91kg shells, 2 000 per gun
     Anti-air guns in deck mounts, 1930 Model
     2 x 2-gun mounts on sides, aft deck centre
      2 raised mounts
4 - 0,50" / 12,7 mm 62,0 cal guns - 0,07lbs / 0,03kg shells, 4 000 per gun
     Machine guns in deck mounts, 1930 Model
     2 x 2-gun mounts on sides, forward deck forward
      2 raised mounts
Weight of broadside 82 lbs / 37 kg

Armour:
- Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,39" / 10 mm     -           -
   3rd:   0,24" / 6 mm     -           -
   4th:   0,24" / 6 mm     -           -

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 2 shafts, 7 700 shp / 5 745 Kw = 25,01 kts
   Range 4 000nm at 10,00 kts
   Bunker at max displacement = 69 tons

Complement:
   58 - 76

Cost:
   £0,227 million / $0,908 million

Distribution of weights at normal displacement:
   Armament: 15 tons, 2,7 %
     - Guns: 15 tons, 2,7 %
   Armour: 3 tons, 0,5 %
     - Armament: 3 tons, 0,5 %
   Machinery: 233 tons, 40,7 %
   Hull, fittings & equipment: 219 tons, 38,1 %
   Fuel, ammunition & stores: 73 tons, 12,8 %
   Miscellaneous weights: 30 tons, 5,2 %
     - On freeboard deck: 29 tons
     - Above deck: 1 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     385 lbs / 175 Kg = 11,9 x 4,0 " / 102 mm shells or 0,3 torpedoes
   Stability (Unstable if below 1.00): 1,17
   Metacentric height 0,9 ft / 0,3 m
   Roll period: 11,6 seconds
   Steadiness   - As gun platform (Average = 50 %): 74 %
         - Recoil effect (Restricted arc if above 1.00): 0,24
   Seaboat quality (Average = 1.00): 1,37

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0,450 / 0,457
   Length to Beam Ratio: 9,25 : 1
   'Natural speed' for length: 15,58 kts
   Power going to wave formation at top speed: 63 %
   Trim (Max stability = 0, Max steadiness = 100): 54
   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:   22,00 %, 17,22 ft / 5,25 m, 13,62 ft / 4,15 m
     - Forward deck:   30,00 %, 13,62 ft / 4,15 m, 10,83 ft / 3,30 m
     - Aft deck:   28,00 %, 10,83 ft / 3,30 m, 10,83 ft / 3,30 m
     - Quarter deck:   20,00 %, 10,83 ft / 3,30 m, 10,83 ft / 3,30 m
     - Average freeboard:      12,18 ft / 3,71 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 142,0 %
      - Above water (accommodation/working, high = better): 139,8 %
   Waterplane Area: 4 065 Square feet or 378 Square metres
   Displacement factor (Displacement / loading): 107 %
   Structure weight / hull surface area: 28 lbs/sq ft or 139 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,64
      - Longitudinal: 3,28
      - Overall: 0,75
   Cramped machinery, storage, compartmentation space
   Excellent accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

AD
SR Marconi
1t for 1924 fire control
OD
9 tons for 3TTx533
10t for 1920 sonar
6t for 60x90kg DC
2t for paravanes
AW
Climatisation