Ścigacz torpedowy typu ST-53 1938 (12 szt.) i ścigacz artyleryjski SA-15 1938 (3 szt.)
Piąta i ostatnia generacja
ścigaczy tej linii rozwojowej, która według mnie wyczerpała już swoje
możliwości. Następne ścigacze będą budowane zgodnie z inną koncepcją. Przy
znacznie mniejszej wyporności będą słabiej uzbrojone, ale mam nadzieję, co
najmniej równie szybkie.
W porównaniu z
jednostkami poprzedniej generacji, prezentowane okręciki są nieznacznie
większe, szybsze, a także mają lepsze własności morskie. Również lepiej
rozplanowano przestrzeń wewnętrzną oraz uwspółcześniono wyposażenie radionawigacyjne.
Uzbrojenie pozostało bez zmian.
Ciekawostką może być
to, że ścigacze te budowane były w trzech różnych stoczniach; w Ustce, Pontus
Regius (Pemba) i Rabaulu (PPTR).
Wraz z wejściem do
służby tych jednostek, wycofane zostały: Wilk
(MGB-3 1924) oraz Chart, Bulterier, Dog,
Doberman, Gryfon, Husky i Jamnik
(MTB-5 1924-25). Najlepiej zachowane: Wilk,
Gryfon, Husky i Jamnik zostały
sprzedane na Litwę, a pozostałe złomowane.
Nowe okręty bazują: jeden
dywizjon (1xSA + 4xST) na Bałtyku, drugi na PPTR, a trzeci w Namibii.
Najpierw ścigacz torpedowy.
ST-53, Poland Motor torpedo boat laid down
1938
Displacement:
87
t light; 91 t standard; 100 t normal; 107 t full load
Dimensions: Length (overall / waterline) x
beam x draught (normal/deep)
(135,18
ft / 133,20 ft) x 20,51 ft x (4,27 / 4,42 ft)
(41,20
m / 40,60 m) x 6,25 m x (1,30 / 1,35 m)
Armament:
3
- 0,98" / 25,0 mm 60,0 cal guns - 0,55lbs / 0,25kg shells, 1 200 per
gun
Anti-air guns in deck mounts, 1933 Model
1 x Single mount on centreline, forward deck
forward
1 x Twin mount on centreline, aft deck aft
Weight of broadside 2 lbs / 1 kg
Main Torpedoes
2
- 21,0" / 533 mm, 27,33 ft / 8,33 m torpedoes - 1,806 t each, 3,612 t
total
In
2 sets of deck mounted reloads + 2 torpedoes reloads
Machinery:
Petrol
Internal combustion motors,
Geared
drive, 3 shafts, 6 966 shp / 5 196 Kw = 41,00 kts
Range
850nm at 14,00 kts
Bunker
at max displacement = 34 tons
Complement:
15
- 20
Cost:
£0,048
million / $0,194 million
Distribution of weights at normal
displacement:
Armament:
5 tons, 5,0%
- Guns: 0 tons, 0,4%
- Weapons: 5 tons, 4,5%
Machinery:
38 tons, 38,2%
Hull,
fittings & equipment: 41 tons, 40,8%
Fuel,
ammunition & stores: 12 tons, 12,4%
Miscellaneous
weights: 4 tons, 3,6%
- On freeboard deck: 4 tons
Overall survivability and seakeeping ability:
Survivability
(Non-critical penetrating hits needed to sink ship):
97 lbs / 44 Kg = 134,1 x 1,0 " / 25 mm
shells or 0,1 torpedoes
Stability
(Unstable if below 1.00): 1,32
Metacentric
height 0,8 ft / 0,2 m
Roll
period: 9,9 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
-
Recoil effect (Restricted arc if above 1.00): 0,01
Seaboat
quality (Average = 1.00): 1,05
Hull form characteristics:
Hull
has raised forecastle,
a normal bow and large transom stern
Block
coefficient (normal/deep): 0,300 / 0,311
Length
to Beam Ratio: 6,50 : 1
'Natural
speed' for length: 14,23 kts
Power
going to wave formation at top speed: 65 %
Trim
(Max stability = 0, Max steadiness = 100): 67
Bow
angle (Positive = bow angles forward): 11,00 degrees
Stern
overhang: 0,00 ft / 0,00 m
Freeboard
(% = length of deck as a percentage of waterline length):
Fore
end, Aft end
- Forecastle: 38,00%, 10,17 ft /
3,10 m, 10,17 ft / 3,10 m
- Forward deck: 12,00%, 6,56 ft / 2,00
m, 6,56 ft / 2,00 m
- Aft deck: 35,00%, 6,56 ft / 2,00 m, 6,56 ft / 2,00 m
- Quarter deck: 15,00%, 6,56 ft / 2,00
m, 6,56 ft / 2,00 m
- Average freeboard: 7,93 ft / 2,42 m
Ship
tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low =
better): 126,8%
-
Above water (accommodation/working, high = better): 123,6%
Waterplane
Area: 1 668 Square feet or 155 Square metres
Displacement
factor (Displacement / loading): 122%
Structure
weight / hull surface area: 16 lbs/sq ft or 76 Kg/sq metre
Hull
strength (Relative):
-
Cross-sectional: 0,54
-
Longitudinal: 3,57
-
Overall: 0,66
Cramped
machinery, storage, compartmentation space
Excellent
accommodation and workspace room
Ship
has slow, easy roll, a good, steady gun platform
ST-53 - ST-64 (1938)
Sensors:
1 x RN-1
Teraz ścigacz
artyleryjski.
SA-15, Poland Motor gun boat laid down 1938
Displacement:
87
t light; 91 t standard; 100 t normal; 107 t full load
Dimensions: Length (overall / waterline) x
beam x draught (normal/deep)
(135,18
ft / 133,20 ft) x 20,51 ft x (4,27 / 4,42 ft)
(41,20
m / 40,60 m) x 6,25 m x (1,30 / 1,35 m)
Armament:
1
- 1,57" / 40,0 mm 60,0 cal gun - 2,05lbs / 0,93kg shells, 300 per gun
Anti-air gun in deck mount, 1933 Model
1 x Single mount on centreline, forward deck
forward
2
- 0,98" / 25,0 mm 60,0 cal guns - 0,51lbs / 0,23kg shells, 1 200 per
gun
Anti-air guns in deck mount, 1933 Model
1 x Twin mount on centreline, aft deck aft
4
- 0,51" / 13,0 mm 75,0 cal guns - 0,09lbs / 0,04kg shells, 2 500 per
gun
Machine guns in deck mounts, 1938 Model
2 x Twin mounts on sides, aft deck forward
Weight of broadside 3 lbs / 2 kg
Main DC/AS Mortars
2
- 246,92 lbs / 112,00 kg Depth Charges + 8 reloads - 1,102 t total
in
Stern depth charge racks
Machinery:
Petrol
Internal combustion motors,
Geared
drive, 3 shafts, 6 966 shp / 5 196 Kw = 41,00 kts
Range
850nm at 14,00 kts
Bunker
at max displacement = 34 tons
Complement:
15
- 20
Cost:
£0,050
million / $0,199 million
Distribution of weights at normal
displacement:
Armament:
3 tons, 2,7%
- Guns: 1 tons, 1,3%
- Weapons: 1 tons, 1,4%
Machinery:
38 tons, 38,2%
Hull,
fittings & equipment: 45 tons, 45,2%
Fuel,
ammunition & stores: 13 tons, 12,8%
Miscellaneous
weights: 1 tons, 1,1%
- Hull above water: 1 tons
Overall survivability and seakeeping ability:
Survivability
(Non-critical penetrating hits needed to sink ship):
99 lbs / 45 Kg = 37,2 x 1,6 " / 40 mm
shells or 0,1 torpedoes
Stability
(Unstable if below 1.00): 1,26
Metacentric
height 0,7 ft / 0,2 m
Roll
period: 10,3 seconds
Steadiness - As gun platform (Average = 50 %): 72 %
-
Recoil effect (Restricted arc if above 1.00): 0,02
Seaboat
quality (Average = 1.00): 1,03
Hull form characteristics:
Hull
has raised forecastle,
a normal bow and large transom stern
Block
coefficient (normal/deep): 0,300 / 0,311
Length
to Beam Ratio: 6,50 : 1
'Natural
speed' for length: 14,23 kts
Power
going to wave formation at top speed: 65 %
Trim
(Max stability = 0, Max steadiness = 100): 70
Bow
angle (Positive = bow angles forward): 11,00 degrees
Stern
overhang: 0,00 ft / 0,00 m
Freeboard
(% = length of deck as a percentage of waterline length):
Fore
end, Aft end
- Forecastle: 38,00%, 10,17 ft /
3,10 m, 10,17 ft / 3,10 m
- Forward deck: 12,00%, 6,56 ft / 2,00
m, 6,56 ft / 2,00 m
- Aft deck: 35,00%, 6,56 ft / 2,00 m, 6,56 ft / 2,00 m
- Quarter deck: 15,00%, 6,56 ft / 2,00
m, 6,56 ft / 2,00 m
- Average freeboard: 7,93 ft / 2,42 m
Ship
tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low =
better): 130,5%
-
Above water (accommodation/working, high = better): 139,0%
Waterplane
Area: 1 668 Square feet or 155 Square metres
Displacement
factor (Displacement / loading): 122%
Structure
weight / hull surface area: 17 lbs/sq ft or 85 Kg/sq metre
Hull
strength (Relative):
-
Cross-sectional: 0,61
-
Longitudinal: 3,97
-
Overall: 0,73
Cramped
machinery, storage, compartmentation space
Excellent
accommodation and workspace room
Ship
has slow, easy roll, a good, steady gun platform
SA-15 - SA-17 (1938)
Sensors:
1 x SP-2
1 x RN-1
