Ścigacz okrętów podwodnych typu Niezłomny 1933 (3 szt.)
Pierwszy
okręcik zbudowany na bazie projektu PU-300. Jednostka przeznaczona jest do
działań w zasadzie wyłącznie na Bałtyku, choć jak na swą wielkość wykazuje
bardzo dobrą dzielność morską.
O
szczegółach technicznych rozpisywać się nie będę – wszystko znajdziecie w
raporcie. Co do urody sylwetki, to nie wiem, czy duży wznos dziobu nadaje
jednostce wygląd zawadiacki, czy raczej pretensjonalny – ocenicie sami.
Jak
zwykle w przypadku pierwszego okrętu z projektu uniwersalnego, proszę o uwagi,
które będę mógł ewentualnie wykorzystać przy następnych jednostkach z tej samej
rodziny.
Niezłomny, Poland Submarine chaser laid down
1933
Displacement:
271
t light; 279 t standard; 300 t normal; 317 t full load
Dimensions: Length (overall / waterline) x
beam x draught (normal/deep)
(168,04
ft / 164,04 ft) x 20,51 ft x (7,22 / 7,49 ft)
(51,22
m / 50,00 m) x 6,25 m x (2,20 / 2,28 m)
Armament:
1
- 2,95" / 75,0 mm 55,0 cal gun - 13,01lbs / 5,90kg shells, 200 per gun
Dual purpose gun in deck and hoist mount,
1923 Model
1 x Single mount on centreline, forward deck
forward
1
- 0,98" / 25,0 mm 60,0 cal gun - 0,55lbs / 0,25kg shells, 1 000 per
gun
Anti-air gun in deck mount, 1919 Model
1 x Single mount on centreline, aft deck aft 1
raised mount
2
- 0,51" / 13,0 mm 75,0 cal guns - 0,11lbs / 0,05kg shells, 2 000 per
gun
Machine guns in deck mounts, 1925 Model
2 x Single mounts on sides, forward deck centre
2 raised mounts
Weight of broadside 14 lbs / 6 kg
Main DC/AS Mortars
2
- 418,88 lbs / 190,00 kg Depth Charges + 12 reloads - 2,618 t total
in
Stern depth charge racks
2nd DC/AS Mortars
2
- 418,88 lbs / 190,00 kg Depth Charges + 16 reloads - 3,366 t total
in
Depth charge throwers
Machinery:
Diesel
Internal combustion motors, plus diesel
motors,
Geared
drive, 2 shafts, 3 653 shp / 2 725 Kw = 22,50 kts
Range
2 900nm at 10,00 kts
Bunker
at max displacement = 38 tons
Complement:
35
- 46
Cost:
£0,124
million / $0,496 million
Distribution of weights at normal
displacement:
Armament:
14 tons, 4,6%
- Guns: 6 tons, 1,9%
- Weapons: 8 tons, 2,8%
Machinery:
106 tons, 35,4%
Hull,
fittings & equipment: 151 tons, 50,2%
Fuel,
ammunition & stores: 29 tons, 9,7%
Miscellaneous
weights: 0 tons, 0,0%
Overall survivability and seakeeping ability:
Survivability
(Non-critical penetrating hits needed to sink ship):
352 lbs / 160 Kg = 27,4 x 3,0 " / 75 mm
shells or 0,3 torpedoes
Stability
(Unstable if below 1.00): 1,09
Metacentric
height 0,5 ft / 0,2 m
Roll
period: 11,6 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
-
Recoil effect (Restricted arc if above 1.00): 0,17
Seaboat
quality (Average = 1.00): 1,40
Hull form characteristics:
Hull
has rise forward of midbreak,
a normal bow and large transom stern
Block
coefficient (normal/deep): 0,433 / 0,441
Length
to Beam Ratio: 8,00 : 1
'Natural
speed' for length: 15,03 kts
Power
going to wave formation at top speed: 69 %
Trim
(Max stability = 0, Max steadiness = 100): 50
Bow
angle (Positive = bow angles forward): 12,50 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%, 18,04 ft /
5,50 m, 15,09 ft / 4,60 m
- Forward deck: 30,00%, 15,09 ft / 4,60
m, 15,09 ft / 4,60 m
- Aft deck: 30,00%, 6,89 ft / 2,10 m, 6,89 ft / 2,10 m
- Quarter deck: 20,00%, 6,89 ft / 2,10
m, 6,89 ft / 2,10 m
- Average freeboard: 11,23 ft / 3,42 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low =
better): 120,9%
-
Above water (accommodation/working, high = better): 131,5%
Waterplane
Area: 2 198 Square feet or 204 Square metres
Displacement
factor (Displacement / loading): 130%
Structure
weight / hull surface area: 29 lbs/sq ft or 144 Kg/sq metre
Hull
strength (Relative):
-
Cross-sectional: 0,77
-
Longitudinal: 10,53
-
Overall: 1,00
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
Niezłomny (1933)
Nieugięty (1933)
Nieustępliwy (1933)